CN105060905B - Low alkaline-resisting mullite brick of aluminium and preparation method thereof - Google Patents
Low alkaline-resisting mullite brick of aluminium and preparation method thereof Download PDFInfo
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- CN105060905B CN105060905B CN201510455796.4A CN201510455796A CN105060905B CN 105060905 B CN105060905 B CN 105060905B CN 201510455796 A CN201510455796 A CN 201510455796A CN 105060905 B CN105060905 B CN 105060905B
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Abstract
The present invention relates to a kind of low alkaline-resisting mullite brick of aluminium and preparation method thereof.Its preparing raw material is as follows：3 1mm high pressures are given up electroceramics 30% 50%, 1 0.088mm synthesizes low aluminum-containing mullite 15 30%, ＜ 0.088mm synthesize low aluminum-containing mullite 20 30%, ＜ 0.088mm silica flours 5% 15%, the lignosulfite of additional above-mentioned raw materials gross weight 5 10%.Preparation method is that the raw material is kneaded into 15~20min in edge runner-wet mill in proportion, under 200~250Mpa pressure it is compressing after to enter kiln drying dry, drying temperature is 110 120 DEG C, and drying time is 20~24h, and being incubated 6 8h at 1300~1400 DEG C of firing temperature is made.The present invention does primary raw material using Industry Waste electroceramics and synthesis low aluminum-containing mullite, has good alkaline erosion, high temperature resistant and thermal shock resistance, can be widely applied to cement kiln preheating decomposition zone.
Description
Technical field
The invention belongs to technical field of refractory materials, is related to aluminum silica refractory, and in particular to a kind of low aluminium is alkaline-resisting not
Carry out stone brick and preparation method thereof.
Background technology
At present, new type nonaqueous cement preheating in rotary kiln in China's decomposes band refractory material and mainly configures siliceous mullite brick, although can
Meet production requirement, but problems with is brought using this kind of product：Siliceous mullite brick is all using one-level or high grade bauxite, and add
Mass ratio 10%-25% SiC, production cost are high；And its higher thermal conductivity factor causes the consumption rise of cement kiln fuel ton, makes
Into energy waste；Because alumina content is high in siliceous mullite brick, for the alkali erosiveness deficiency of preheating decomposition zone, alkali cracking occurs and shows
As influenceing service life.Therefore, either still examined from refractory material resources saving from clinker energy consumption reduction etc.
Consider, propose the low alkaline-resisting mullite brick of aluminium of the present invention, applied to cement rotary kiln preheating decomposition zone, play its excellent alkaline erosion
Property and heat-resisting quantity feature, substitute siliceous mullite brick, stable refractory material service life effectively utilizes refractory material resources.
The content of the invention
It is an object of the present invention to study a kind of alkaline-resisting mullite brick of low aluminium and preparation method thereof, the product uses high pressure
Useless electroceramics does primary raw material, and it is refractory material made of raw material that production cost, which is far below with high-grade bauxite, therefore with good
Economic use value.The alumina content of this material is between alkaline-resisting clay brick and high-alumina brick, therefore resistance to elevated temperatures is excellent
In common Alkali resistant brick.Raw material can be obviously improved the thermal shock resistance and alkali resistance of material using synthesis low aluminum-containing mullite.It is in addition, former
Silica flour is added in material, can further strengthen resisting the ability of alkali vapours attack.Therefore, it can substitute existing common alkaline-resisting
Brick, anti-peeling high aluminium brick and conventional siliceous mullite brick, it is widely used in decomposing band in kiln tail preheater, dore furnace, tertiary-air pipe and kiln,
Industrial wastes high tension insulator is fully utilized simultaneously, the reasonable utilization of resource is promoted, has filled up in quality coal in cement kiln systems from low temperature
Both there is alkali resistance into the transition region of high temperature, there is heat-resisting quantity, and cheap material blank again.To realize above-mentioned mesh
, the present invention can take following technical proposals：
The raw material components percentage by weight of the present invention：
Useless electroceramics 30%-50%, 1-0.088mm synthesis low aluminum-containing mullite 15-30%, ＜ the 0.088mm synthesis of 3-1mm high pressures
Low aluminum-containing mullite 20-30%, ＜ 0.088mm silica flours 5%-15%, additional above-mentioned raw materials gross weight 5-10% sulfite cellulose
Waste liquid makees bonding agent.
The high pressure give up electroceramics refer to electroceramics factory produce high tension insulator when substandard product and use after by recovery
Old high tension insulator, the content of aluminum oxide is 30%-60% in waste and old high tension insulator, and because waste and old high tension insulator produces at it
During have passed through homogenizing, fine grinding and high temperature and the technique such as burn till, therefore its performance is better than pocket clay clinker, and price is low
It is honest and clean, pocket clay clinker can be substituted completely.
The useless electroceramics of the high pressure of the 3-1mm, refer to the useless electroceramics of high pressure that particle diameter is 3-1mm, its alumina content is 56%；
Synthesize low aluminum-containing mullite, alumina content 45%；Silica flour, SiO2Content >=99%；Lignosulfite proportion is
1.3-1.5g/cm3。
The present invention production technology be：
Above-mentioned raw materials are proportionally mixed, then add lignosulfite, in edge runner-wet mill be kneaded 15~
20min；In 200~250Mpa forming under the pressure；Adobe temperature be dry 20 in 110-120 DEG C of tunnel drying kiln~
After 24h, insulation 6-8h is burnt till at 1300~1400 DEG C into hyperthermia tunnel Kiln.
Compared with prior art, the invention has the advantages that：1) raw material is made using the useless electroceramics of high pressure, not only subtracted
The consumption of superfine quite in short supply and one-level alumina resource is lacked, and Industry Waste electroceramics is turned waste into wealth, and solves industry
The process problem of rubbish.2) the alkaline-resisting mullite brick alumina content of low aluminium provided by the invention is 40-50%, while is added in raw material
Enter silica flour, with more excellent heat-resisting quantity while making its alkaline resistance properties reach common Alkali resistant brick performance requirement.3) use
Synthesis low aluminum-containing mullite does primary raw material, and the mutual staggered-mesh structure of needle-like of mullite can make material have good thermal shock steady
It is qualitative, and the thermal conductivity factor of mullite is low, can effectively reduce thermal loss.4) compared with siliceous mullite brick, product price of the present invention
It is cheap, greatly reduce the operation cost of cement production enterprise.
Case is embodied：
Embodiment 1
Using the useless electroceramics 46% of 3-1mm high pressures, 1-0.088mm synthesis low aluminum-containing mullites 25%, ＜ 0.088mm synthesize low aluminium
Mullite 24%, ＜ 0.088mm silica flours 5%, the lignosulfite of additional above-mentioned raw materials gross weight 5% make bonding agent, warp
After crossing edge runner-wet mill mixing, it is molded using forcing press, in dry kiln after 110 DEG C of drying 24h, after 1400 DEG C of high temperature sintering 6h
Finished product.
Embodiment 2
Using the useless electroceramics 42% of 3-1mm high pressures, 1-0.088mm synthesis low aluminum-containing mullites 28%, ＜ 0.088mm synthesize low aluminium
Mullite 22%, ＜ 0.088mm silica flours 8%, the lignosulfite of additional above-mentioned raw materials gross weight 5% make bonding agent, warp
After crossing edge runner-wet mill mixing, it is molded using forcing press, in dry kiln after 110 DEG C of drying 24h, after 1350 DEG C of high temperature sintering 6h
Finished product.
Embodiment 3
Using the useless electroceramics 39% of 3-1mm high pressures, 1-0.088mm synthesis low aluminum-containing mullites 24%, ＜ 0.088mm synthesize low aluminium
Mullite 25%, ＜ 0.088mm silica flours 12%, the lignosulfite of additional above-mentioned raw materials gross weight 5% make bonding agent, warp
After crossing edge runner-wet mill mixing, it is molded using forcing press, in dry kiln after 110 DEG C of drying 24h, after 1350 DEG C of high temperature sintering 6h
Finished product.
Embodiment 4
Using the useless electroceramics 35% of 3-1mm high pressures, 1-0.088mm synthesis low aluminum-containing mullites 27%, ＜ 0.088mm synthesize low aluminium
Mullite 23%, ＜ 0.088mm silica flours 15%, the lignosulfite of additional above-mentioned raw materials gross weight 5% make bonding agent, warp
After crossing edge runner-wet mill mixing, it is molded using forcing press, in dry kiln after 110 DEG C of drying 24h, after 1350 DEG C of high temperature sintering 6h
Finished product.
The alkaline-resisting mullite brick of the low aluminium prepared by above case study on implementation is taken to carry out normal experiment analysis, each performance parameter and general
Logical siliceous mullite brick contrast see the table below：
Claims (1)
- A kind of 1. alkaline-resisting mullite brick of low aluminium, it is characterised in that：By percentage to the quality, its preparing raw material is as follows：The useless electroceramics 30%-50% of 3-1mm high pressures,1-0.088mm low aluminum-containing mullite 15-30% is synthesized,＜ 0.088mm synthesize low aluminum-containing mullite 20-30%,＜ 0.088mm silica flour 5%-15%,Additional above-mentioned raw materials gross weight 5-10% lignosulfite makees bonding agent；The useless electroceramics of the high pressure of the 3-1mm, its alumina content are 56%；Synthesize low aluminum-containing mullite, alumina content 45%；Silicon Emery dust, SiO2Content >=99%；Lignosulfite proportion is 1.3-1.5g/cm3；The alkaline-resisting mullite brick of low aluminium is prepared according to following technological process using above-mentioned raw materials：By the original of above-mentioned formula ratio Material is mixed, and then adds lignosulfite, and 15-20min is kneaded in edge runner-wet mill；In 200-250Mpa pressure Lower shaping；Adobe temperature be dried in 110-120 DEG C of tunnel drying kiln enter after 20-24h in hyperthermia tunnel Kiln 6-8h is incubated at 1300-1400 DEG C to burn till.
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| CN201510455796.4A CN105060905B (en) | 2015-07-24 | 2015-07-24 | Low alkaline-resisting mullite brick of aluminium and preparation method thereof |
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| CN105060905A CN105060905A (en) | 2015-11-18 |
| CN105060905B true CN105060905B (en) | 2018-01-05 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106064948A (en) * | 2016-07-26 | 2016-11-02 | 郑州顺通新型耐火材料有限公司 | A kind of manufacture method of the leakage proof brick used on aluminium manufacturer electrolysis bath |
| CN107986800A (en) * | 2017-11-29 | 2018-05-04 | 吕梁耀金道冶金材料工程技术有限公司 | A kind of porcelain aluminium Alkali resistant brick and preparation method thereof |
| CN109111215A (en) * | 2018-08-29 | 2019-01-01 | 通达耐火技术股份有限公司 | A kind of cement rotary kiln low aluminum silicon not brick and preparation method thereof |
| CN108955242B (en) * | 2018-09-07 | 2019-11-01 | 文县祁连山水泥有限公司 | A method of cement rotary kiln being transformed using refractory heat-insulating mullite brick |
| CN111747728A (en) * | 2020-05-13 | 2020-10-09 | 九江市璀鑫新材料有限公司 | Preparation method of high-strength alkali-resistant brick |
| FI129542B (en) * | 2020-12-16 | 2022-04-14 | Oulun Yliopisto | Manufacturing electroceramic composite |
| CN115490528B (en) * | 2022-10-31 | 2023-04-18 | 安徽瑞泰新材料科技有限公司 | High-strength refractory brick and preparation method thereof |
| CN115745585A (en) * | 2022-11-23 | 2023-03-07 | 中国地质大学（北京） | Preparation method for preparing low-aluminum mullite refractory brick by using waste electroceramics |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1303834A (en) * | 1999-11-22 | 2001-07-18 | 冶金工业部洛阳耐火材料研究院 | Corundum-mullite product |
| CN103373856B (en) * | 2012-04-26 | 2015-05-20 | 郑州安耐克实业有限公司 | High-stress-strain low-creepage high-thermal-shock-resistance refractory brick and manufacturing method thereof |
| CN103044050B (en) * | 2013-01-25 | 2014-06-18 | 苏州罗卡节能科技有限公司 | Medium-density alkali-resistant brick for rotary kiln and preparation method thereof |
| CN103553661B (en) * | 2013-10-18 | 2015-05-20 | 郑州安耐克实业有限公司 | Preparation method for mullite-roller bed bar waste-cordierite product for hot-blast stove ceramic burner |
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