CN109942237B - Building material prepared from nickel-iron slag - Google Patents
Building material prepared from nickel-iron slag Download PDFInfo
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- CN109942237B CN109942237B CN201910240033.6A CN201910240033A CN109942237B CN 109942237 B CN109942237 B CN 109942237B CN 201910240033 A CN201910240033 A CN 201910240033A CN 109942237 B CN109942237 B CN 109942237B
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- ferronickel slag
- slag
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- ferronickel
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- 239000002893 slag Substances 0.000 title claims abstract description 180
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000004566 building material Substances 0.000 title claims abstract description 25
- 229910000863 Ferronickel Inorganic materials 0.000 claims abstract description 124
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 239000002994 raw material Substances 0.000 claims abstract description 63
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 36
- 238000002360 preparation method Methods 0.000 claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 22
- 239000010881 fly ash Substances 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 239000010440 gypsum Substances 0.000 claims abstract description 13
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 13
- 239000004567 concrete Substances 0.000 claims description 28
- 239000011449 brick Substances 0.000 claims description 26
- 239000007787 solid Substances 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 19
- 239000002518 antifoaming agent Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 18
- 238000005303 weighing Methods 0.000 claims description 18
- 239000008188 pellet Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 238000001238 wet grinding Methods 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000011362 coarse particle Substances 0.000 claims description 3
- 239000010419 fine particle Substances 0.000 claims description 3
- 239000002910 solid waste Substances 0.000 abstract description 3
- 238000011031 large-scale manufacturing process Methods 0.000 abstract 1
- 239000002253 acid Substances 0.000 description 9
- 239000004576 sand Substances 0.000 description 9
- 229920005552 sodium lignosulfonate Polymers 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000012190 activator Substances 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011504 laterite Substances 0.000 description 1
- 229910001710 laterite Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
A building material prepared from ferronickel slag relates to the technical field of building materials. The invention provides a building material prepared from ferronickel slag, which comprises a powder raw material, a water reducing agent and water, wherein the powder raw material comprises the following components in percentage by mass: 50-70% of nickel-iron slag, 10-30% of fly ash, 5-10% of gypsum and 5-10% of steel slag. The invention comprehensively utilizes solid wastes such as the ferronickel slag, the slag and the like, is green and environment-friendly, and the prepared building material has high strength and good performance. Meanwhile, the preparation method provided by the invention is simple and convenient and is easy for large-scale production.
Description
Technical Field
The invention provides a building material prepared from ferronickel slag, and belongs to the technical field of building materials.
Background
The rapid development of industrial technology and socioeconomic industry has resulted in large-scale, high-consumption and multi-waste industrial systems. The continuously generated industrial wastes occupy a large amount of land resources and pollute the environment. With the adjustment of industrial policies and the increase of awareness of environmental protection, the utilization of industrial waste as a resource is regarded as the most effective method for treating industrial waste.
The ferronickel slag is a solid byproduct generated in the process of smelting ferronickel by using laterite nickel ore as a raw material through a pyrogenic process, and 4-6 tons of ferronickel slag are generated when 1 ton of ferronickel alloy is produced. Compared with metallurgical slag such as slag, steel slag and the like, the ferronickel slag has high magnesium oxide content and low calcium oxide content. Therefore, the building material has particularity and difficulty in preparation, and is not fully utilized at present.
The Chinese patent with publication number CN106045477A discloses a preparation method of a ferronickel slag sintered water permeable brick, wherein ferronickel slag with different thicknesses and an alkaline activator are used in the patent to prepare the water permeable brick needing sintering or autoclaving, the water permeable effect of the product is good, but sintering and autoclaving are needed in the preparation process, and the process cost is high. Chinese patent publication No. CN105016690A discloses a method for producing concrete by using water-quenched nickel-iron slag, which comprises drying, fine-grinding and classifying the water-quenched nickel-iron slag to obtain fine slag and coarse slag, adding an activator into the fine slag and fully mixing, activating the fine slag by the activator to serve as an auxiliary gel material to replace part of cement, and activating the coarse slag as a fine aggregate to replace part of sand for concrete preparation.
Disclosure of Invention
In order to solve the problems, the invention provides a building material prepared from the ferronickel slag, which recycles the ferronickel slag, and combines with other solid wastes for combined treatment, such as fly ash, slag and the like, thereby greatly increasing the utilization value of the solid wastes.
The building material prepared from the ferronickel slag comprises a powder raw material, a water reducing agent and water, and is characterized in that the powder raw material comprises the following components in percentage by mass: 50-70% of nickel-iron slag, 10-30% of fly ash, 5-10% of gypsum and 5-10% of steel slag.
The silicon content of the nickel-iron slag is 40-50%, the magnesium content is 25-35%, and the availability is high; the calcium content of the slag is 40-50%, the silicon content is 20-30%, and the aluminum content is 10-20%; the silicon content of the fly ash is 50-60%, and the aluminum content accounts for 30-40%.
The water reducing agent can be one or more of lignosulfonate, naphthalene-based high-efficiency water reducing agents, melamine-based high-efficiency water reducing agents, sulfamate-based high-efficiency water reducing agents, fatty acid-based high-efficiency water reducing agents and polycarboxylate-based high-efficiency water reducing agents.
Further, the building material is one or more of ferronickel slag ceramsite, ferronickel slag brick and ferronickel slag concrete.
Further, the building material is ferronickel slag ceramsite which comprises the following raw materials in parts by weight: 100 parts of powder raw material, 0.5-1 part of water reducing agent, 0.5-1 part of defoaming agent and 10-20 parts of water.
Further, the preparation method of the nickel iron slag ceramsite comprises the following steps:
(1) adding the ferronickel slag into a ball mill, adding a proper amount of water for wet milling, collecting ferronickel slag with the granularity smaller than 100 meshes, and drying for later use;
(2) weighing each solid raw material according to the proportion requirement, and mixing in a ball mill until the solid raw materials are uniform for later use;
(3) adding the obtained mixture into a granulator, weighing corresponding water according to the proportion requirement, pouring the water into the granulator, and granulating at the rotating speed of 20-60 r/min;
(4) sealing the prepared pellets and maintaining the pellets under sealed conditions at room temperature.
Further, the building material is a ferronickel slag brick, and comprises the following raw material components in parts by weight: 100 parts of powder raw material, 0.5-1 part of water reducing agent, 0.5-1 part of defoaming agent and 15-25 parts of water.
Further, the preparation method of the ferronickel slag brick comprises the following steps:
(1) cutting and crushing the ferronickel slag, adding the crushed ferronickel slag into a rotary kiln, and calcining the crushed ferronickel slag for 20 minutes at 200 ℃;
(2) weighing each solid raw material according to the proportion requirement, and mixing in a ball mill until the solid raw materials are uniform for later use;
(3) adding the mixture into a stirrer, adding water, continuously stirring for a certain time, and then feeding into a brick press for vibration molding, wherein the molding pressure is 20-25 MPa;
(4) and sealing and curing the pressed bricks at room temperature.
Further, the building material is ferronickel slag concrete, and comprises the following raw material components in parts by weight: 100 parts of powder raw material, 300 parts of aggregate and 600 parts of water reducing agent, 0.5-1 part of defoaming agent and 15-30 parts of water.
Further, the aggregate includes natural sand and stones.
Further, the aggregate comprises fine particles of the nickel-iron slag with a size higher than 20 meshes and coarse particles of the nickel-iron slag with a size lower than 20 meshes. The concrete taking the ferronickel slag powder as the main raw material can be better fused with ferronickel slag aggregate, the particle strength advantage of the ferronickel slag is fully exerted, and the defects of original expansibility, brittleness and the like of the ferronickel slag aggregate are avoided.
Further, the preparation method of the ferronickel slag concrete comprises the following steps:
(1) adding the ferronickel slag into a ball mill, adding a proper amount of water for wet milling, collecting ferronickel slag with the granularity of less than 100 meshes, and drying the ferronickel slag to be used as a powder raw material for later use;
(2) weighing powder raw materials according to the proportion requirement, and mixing in a ball mill until the powder raw materials are uniform for later use;
(3) adding the obtained mixture into a concrete mixer, adding aggregate according to the proportion, and mixing until the mixture is uniform;
(4) and (3) uniformly mixing the water reducing agent and the defoaming agent in a certain amount of water, adding the mixture in the step (4) and uniformly stirring to obtain the product.
The invention has the beneficial effects that:
(1) in the preparation process of the building material, a certain amount of slag, fly ash, gypsum, steel slag and the like are added on the basis of taking the ferronickel slag as a main raw material, so that the alkali-activated activation of the ferronickel slag is realized, the resource utilization range of wastes is expanded, and the manufacturing cost is reduced.
(2) The product uses a ball milling method to mill the ferronickel slag evenly in the preparation process, thereby greatly reducing the stacking holes among particles, greatly improving the compactness of the pressed green brick, and being more beneficial to the alkaline excitation activation of the ferronickel slag in the curing process.
(3) The preparation process is simple, the cost is low, and the industrial production is easy to realize; the waste is used as the raw material, no other pollutants are generated in the process, the effect of resource utilization of the waste is really achieved, and the method has high social significance and economic benefit.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to specific embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Ferronickel slag ceramsite, ferronickel slag concrete and ferronickel slag brick
A ferronickel slag ceramsite prepared from ferronickel slag comprises the following raw materials in parts by mass: 70 parts of nickel-iron slag, 10 parts of fly ash, 5 parts of gypsum, 5 parts of steel slag, 0.25 part of sodium lignosulfonate water reducing agent, 0.25 part of polycarboxylic acid high-efficiency water reducing agent, 0.5 part of defoaming agent and 14 parts of water.
The preparation method of the nickel-iron slag ceramsite comprises the following steps:
(1) adding the ferronickel slag into a ball mill, adding a proper amount of water for wet milling, collecting ferronickel slag with the granularity smaller than 100 meshes, and drying for later use;
(2) weighing each solid raw material according to the proportion requirement, and mixing in a ball mill until the solid raw materials are uniform for later use;
(3) adding the obtained mixture into a granulator, weighing corresponding water according to the proportion requirement, pouring the water into the granulator, and granulating at the rotating speed of 20 r/min;
(4) sealing the prepared pellets and maintaining the pellets under sealed conditions at room temperature.
Example 2
A ferronickel slag ceramsite prepared from ferronickel slag comprises the following raw materials in parts by mass: 50 parts of nickel-iron slag, 10 parts of slag, 15 parts of fly ash, 10 parts of gypsum, 5 parts of steel slag, 0.25 part of sodium lignosulfonate water reducing agent, 0.25 part of polycarboxylic acid high-efficiency water reducing agent, 0.7 part of defoaming agent and 19 parts of water.
The preparation method of the nickel-iron slag ceramsite comprises the following steps:
(1) adding the ferronickel slag into a ball mill, adding a proper amount of water for wet milling, collecting ferronickel slag with the granularity smaller than 100 meshes, and drying for later use;
(2) weighing each solid raw material according to the proportion requirement, and mixing in a ball mill until the solid raw materials are uniform for later use;
(3) adding the obtained mixture into a granulator, weighing corresponding water according to the proportion requirement, pouring the water into the granulator, and granulating at the rotating speed of 40 r/min;
(4) sealing the prepared pellets and maintaining the pellets under sealed conditions at room temperature.
Example 3
A ferronickel slag ceramsite prepared from ferronickel slag comprises the following raw materials in parts by mass: 55 parts of nickel-iron slag, 20 parts of slag, 12 parts of fly ash, 5 parts of gypsum, 8 parts of steel slag, 0.25 part of sodium lignosulfonate water reducing agent, 0.25 part of polycarboxylic acid high-efficiency water reducing agent, 1 part of defoaming agent and 12 parts of water.
The preparation method of the nickel-iron slag ceramsite comprises the following steps:
(1) adding the ferronickel slag into a ball mill, adding a proper amount of water for wet milling, collecting ferronickel slag with the granularity smaller than 100 meshes, and drying for later use;
(2) weighing each solid raw material according to the proportion requirement, and mixing in a ball mill until the solid raw materials are uniform for later use;
(3) adding the obtained mixture into a granulator, weighing corresponding water according to the proportion requirement, pouring the water into the granulator, and granulating at the rotating speed of 20 r/min;
(4) sealing the prepared pellets and maintaining the pellets under sealed conditions at room temperature.
The strength performance test data of the ferronickel slag ceramsite prepared in the examples 1-3 are shown in the following table.
| Nickel-iron slag ceramsite | Compressive strength of 3 days, MPa | Compressive strength of 7 days, MPa | 28 days compressive strength, MPa |
| Example 1 | 6.8 | 12.5 | 19.8 |
| Example 2 | 7.4 | 11.8 | 21.7 |
| Example 3 | 7.1 | 13.1 | 22.3 |
Example 4
A ferronickel slag brick prepared from ferronickel slag comprises the following raw materials in parts by mass: 50 parts of nickel-iron slag, 10 parts of slag, 25 parts of fly ash, 5 parts of gypsum, 10 parts of steel slag, 0.25 part of sodium lignosulfonate water reducing agent, 0.25 part of polycarboxylic acid high-efficiency water reducing agent, 0.5 part of defoaming agent and 24 parts of water.
Further, the preparation method of the ferronickel slag brick comprises the following steps:
(1) cutting and crushing the ferronickel slag, adding the crushed ferronickel slag into a rotary kiln, and calcining the crushed ferronickel slag for 20 minutes at 200 ℃;
(2) weighing each solid raw material according to the proportion requirement, and mixing in a ball mill until the solid raw materials are uniform for later use;
(3) adding the mixture into a stirrer, adding water, continuously stirring for a certain time, and then feeding into a brick press for vibration forming, wherein the forming pressure is 21 MPa;
(4) and sealing and curing the pressed bricks at room temperature.
Example 5
A ferronickel slag brick prepared from ferronickel slag comprises the following raw materials in parts by mass: 67 parts of nickel-iron slag, 10 parts of fly ash, 7 parts of gypsum, 6 parts of steel slag, 0.25 part of sodium lignosulfonate water reducing agent, 0.25 part of polycarboxylic acid high-efficiency water reducing agent, 0.7 part of defoaming agent and 16 parts of water.
Further, the preparation method of the ferronickel slag brick comprises the following steps:
(1) cutting and crushing the ferronickel slag, adding the crushed ferronickel slag into a rotary kiln, and calcining the crushed ferronickel slag for 20 minutes at 200 ℃;
(2) weighing each solid raw material according to the proportion requirement, and mixing in a ball mill until the solid raw materials are uniform for later use;
(3) adding the mixture into a stirrer, adding water, continuously stirring for a certain time, and then feeding into a brick press for vibration forming, wherein the forming pressure is 25 MPa;
(4) and sealing and curing the pressed bricks at room temperature.
Example 6
A ferronickel slag brick prepared from ferronickel slag comprises the following raw materials in parts by mass: 50 parts of nickel-iron slag, 30 parts of slag, 10 parts of fly ash, 5 parts of gypsum, 5 parts of steel slag, 0.25 part of sodium lignosulfonate water reducing agent, 0.25 part of polycarboxylic acid high-efficiency water reducing agent, 1 part of defoaming agent and 20 parts of water.
Further, the preparation method of the ferronickel slag brick comprises the following steps:
(1) cutting and crushing the ferronickel slag, adding the crushed ferronickel slag into a rotary kiln, and calcining the crushed ferronickel slag for 20 minutes at 200 ℃;
(2) weighing each solid raw material according to the proportion requirement, and mixing in a ball mill until the solid raw materials are uniform for later use;
(3) adding the mixture into a stirrer, adding water, continuously stirring for a certain time, and then feeding into a brick press for vibration molding, wherein the molding pressure is 24 MPa;
(4) and sealing and curing the pressed bricks at room temperature.
The strength property test data of the ferronickel slag bricks prepared in examples 4-6 are shown in the following table.
Example 7
The ferronickel slag concrete prepared from the ferronickel slag comprises the following raw materials in parts by mass: 52 parts of nickel-iron slag, 20 parts of slag, 15 parts of fly ash, 5 parts of gypsum, 8 parts of steel slag, 130 parts of natural sand, 300 parts of natural pebbles, 0.5 part of sodium lignosulfonate water reducing agent, 0.5 part of polycarboxylic acid high-efficiency water reducing agent, 1 part of defoaming agent and 26 parts of water.
The preparation method of the ferronickel slag concrete comprises the following steps:
(1) adding the ferronickel slag into a ball mill, adding a proper amount of water for wet milling, collecting ferronickel slag with the granularity of less than 100 meshes, and drying the ferronickel slag to be used as a powder raw material for later use;
(2) weighing powder raw materials according to the proportion requirement, and mixing in a ball mill until the powder raw materials are uniform for later use;
(3) adding the obtained mixture into a concrete mixer, adding the ferronickel slag coarse aggregate and the ferronickel slag fine aggregate according to the proportion, and mixing until the mixture is uniform;
(4) and (3) uniformly mixing the water reducing agent and the defoaming agent in a certain amount of water, adding the mixture in the step (4) and uniformly stirring to obtain the product.
Example 8
The ferronickel slag concrete prepared from ferronickel slag has fine ferronickel slag particles of over 20 meshes instead of natural sand, coarse ferronickel slag particles of less than 20 meshes instead of natural pebbles, and other raw materials and preparation methods are the same as those in example 7.
Example 9
The ferronickel slag concrete prepared from the ferronickel slag comprises the following raw materials in parts by mass: 61 parts of nickel-iron slag, 13 parts of slag, 16 parts of fly ash, 5 parts of gypsum, 5 parts of steel slag, 100 parts of natural sand, 250 parts of natural pebbles, 0.5 part of sodium lignosulfonate water reducing agent, 0.5 part of polycarboxylic acid high-efficiency water reducing agent, 1 part of defoaming agent and 20 parts of water. The preparation method of the ferronickel slag concrete is the same as that of example 7.
Example 10
The ferronickel slag concrete prepared from ferronickel slag has fine ferronickel slag particles of over 20 meshes instead of natural sand, coarse ferronickel slag particles of less than 20 meshes instead of natural pebbles, and other raw materials and preparation methods are the same as those in example 9.
Example 11
The ferronickel slag concrete prepared from the ferronickel slag comprises the following raw materials in parts by mass: 68 parts of nickel-iron slag, 10 parts of fly ash, 7 parts of gypsum, 5 parts of steel slag, 200 parts of natural sand, 370 parts of natural pebbles, 0.5 part of sodium lignosulfonate water reducing agent, 0.5 part of polycarboxylic acid high-efficiency water reducing agent, 1 part of defoaming agent and 18 parts of water. The preparation method of the ferronickel slag concrete is the same as that of example 7.
Example 12
The ferronickel slag concrete prepared from ferronickel slag has fine ferronickel slag particles of over 20 meshes in place of natural sand, coarse ferronickel slag particles of less than 20 meshes in place of natural pebbles, and other raw materials and preparation methods are the same as those in example 11.
The strength property test data of the ferronickel slag concrete prepared in examples 7 to 12 are shown in the following table. The compressive strength of the ferronickel slag concrete in each embodiment basically reaches the performance of C40 concrete, and the use requirement of the concrete can be met. In addition, the compressive strength of the concrete prepared by taking the fine particles of the ferronickel slag and the coarse particles of the ferronickel slag as the aggregates is better than that of the concrete taking sand and stones as the aggregates.
Claims (6)
1. The building material prepared from the ferronickel slag comprises a powder raw material, a water reducing agent and water, and is characterized in that the powder raw material comprises the following components in percentage by mass: 50-70% of nickel-iron slag, 10-30% of fly ash, 5-10% of gypsum and 5-10% of steel slag, wherein the granularity of the nickel-iron slag is less than 100 meshes,
the building material is one or more of ferronickel slag ceramsite, ferronickel slag brick and ferronickel slag concrete, and the ferronickel slag concrete comprises the following raw material components in parts by weight: 100 parts of powder raw materials, 300 parts of aggregate, 600 parts of water reducing agent, 0.5-1 part of defoaming agent and 15-30 parts of water, wherein the aggregate comprises nickel-iron slag fine particles higher than 20 meshes and nickel-iron slag coarse particles lower than 20 meshes.
2. The building material made of ferronickel slag according to claim 1, wherein the method for preparing ferronickel slag concrete comprises the following steps:
(1) adding the ferronickel slag into a ball mill, adding a proper amount of water for wet milling, collecting ferronickel slag with the granularity of less than 100 meshes, and drying the ferronickel slag to be used as a powder raw material for later use;
(2) weighing powder raw materials according to the proportion requirement, and mixing in a ball mill until the powder raw materials are uniform for later use;
(3) and adding the obtained mixture into a concrete mixer, adding aggregate according to the proportion, mixing until the mixture is uniform, adding a water reducing agent and a defoaming agent which are uniformly mixed in water, and uniformly stirring to obtain the product.
3. The building material prepared from the ferronickel slag according to claim 1, wherein the building material is ferronickel slag ceramsite and comprises the following raw materials in parts by weight: 100 parts of powder raw material, 0.5-1 part of water reducing agent, 0.5-1 part of defoaming agent and 10-20 parts of water.
4. The building material made of ferronickel slag according to claim 3, characterized in that the preparation method comprises the following steps:
(1) adding the ferronickel slag into a ball mill, adding a proper amount of water for wet milling, collecting ferronickel slag with the granularity smaller than 100 meshes, and drying for later use;
(2) weighing each solid raw material according to the proportion requirement, and mixing in a ball mill until the solid raw materials are uniform for later use;
(3) adding the obtained mixture into a granulator, weighing corresponding water according to the proportion requirement, pouring the water into the granulator, and granulating at the rotating speed of 20-60 r/min;
(4) sealing the prepared pellets and maintaining the pellets under sealed conditions at room temperature.
5. The building material prepared from the ferronickel slag according to claim 1, wherein the building material is a ferronickel slag brick, and comprises the following raw material components in parts by weight: 100 parts of powder raw material, 0.5-1 part of water reducing agent, 0.5-1 part of defoaming agent and 15-25 parts of water.
6. The building material made of ferronickel slag according to claim 5, characterized in that the preparation method comprises the steps of:
(1) cutting and crushing the ferronickel slag, adding the crushed ferronickel slag into a rotary kiln, and calcining the crushed ferronickel slag for 20 minutes at 200 ℃;
(2) weighing each solid raw material according to the proportion requirement, and mixing in a ball mill until the solid raw materials are uniform for later use;
(3) adding the mixture into a stirrer, adding water, continuously stirring for a certain time, and then feeding into a brick press for vibration molding, wherein the molding pressure is 20-25 MPa;
(4) and sealing and curing the pressed bricks at room temperature.
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| EP2615073A1 (en) * | 2012-01-13 | 2013-07-17 | Construction Research & Technology GmbH | Dispersion agent for inorganic particles |
| CN105174914A (en) * | 2015-08-13 | 2015-12-23 | 上海中冶环境工程科技有限公司 | Method for preparing ceramsite with metallurgical waste slag as raw material |
| CN105502974A (en) * | 2015-12-19 | 2016-04-20 | 彭美勋 | Method for treating and utilizing nickel mineral metallurgy waste residues |
| CN106431104A (en) * | 2016-08-31 | 2017-02-22 | 韩涛 | Method for preparing building material from metallurgy slag |
| CN107352952A (en) * | 2017-05-26 | 2017-11-17 | 如皋市磨头建设开发有限公司 | A kind of foam thermal insulation brick |
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| EP2615073A1 (en) * | 2012-01-13 | 2013-07-17 | Construction Research & Technology GmbH | Dispersion agent for inorganic particles |
| CN105174914A (en) * | 2015-08-13 | 2015-12-23 | 上海中冶环境工程科技有限公司 | Method for preparing ceramsite with metallurgical waste slag as raw material |
| CN105502974A (en) * | 2015-12-19 | 2016-04-20 | 彭美勋 | Method for treating and utilizing nickel mineral metallurgy waste residues |
| CN106431104A (en) * | 2016-08-31 | 2017-02-22 | 韩涛 | Method for preparing building material from metallurgy slag |
| CN107352952A (en) * | 2017-05-26 | 2017-11-17 | 如皋市磨头建设开发有限公司 | A kind of foam thermal insulation brick |
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