CN210545598U - Semi-final grinding system - Google Patents
Semi-final grinding system Download PDFInfo
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- CN210545598U CN210545598U CN201921027594.XU CN201921027594U CN210545598U CN 210545598 U CN210545598 U CN 210545598U CN 201921027594 U CN201921027594 U CN 201921027594U CN 210545598 U CN210545598 U CN 210545598U
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Abstract
The embodiment of the utility model discloses half complete grinding system relates to cement manufacture technical field, half complete grinding system includes the roller press, go out roller press material lifting machine, high-frequency vibration sieve, the tube mill, go out mill material lifting machine, selection powder machine and dust collector, the discharge gate of roller press is connected with the feed inlet that goes out roller press material lifting machine, the discharge gate that goes out roller press material lifting machine is connected with the feed inlet of high-frequency vibration sieve, the first discharge gate of high-frequency vibration sieve is connected with the feed inlet of roller press, the second discharge gate of high-frequency vibration sieve is connected with the feed inlet of tube mill, the third discharge gate of high-frequency vibration sieve and the discharge gate that goes out mill material lifting machine are connected with the feed inlet of selection powder machine respectively. The high-frequency vibrating screen is used for replacing the conventional V-shaped powder concentrator, so that the sorting efficiency is higher, the materials with the particle size of less than 0.5mm can be separated to the maximum extent, and the power consumption of a semi-final grinding system is reduced; by using the tube mill of the ceramic grinding body, the grinding efficiency is improved.
Description
Technical Field
The embodiment of the utility model provides a relate to cement production technical field, concretely relates to semi-finished grinding system.
Background
China is a big country of cement production, the cement grinding technology directly influences the development of cement industry, the grinding power consumption accounts for 65% -75% of the total power consumption of cement production, the grinding cost accounts for about 35% of the total cost of cement production, and the reduction of the cement power consumption is the development direction of cement enterprises at present when energy is increasingly tense.
At present, the power consumption of PO42.5 (the power consumption of cement is the variety mentioned below) cement is more than 36kwh/t in an open circuit mill or a closed circuit mill of the cement; the technology of roller press combined semi-final grinding appears along with the technical development, the power consumption of cement grinding is reduced to be below 26kwh/t, but because the existing grinding system uses a V-shaped powder selector and a high-chromium ball grinding body grinder, the powder selector has low powder selection efficiency, the high-chromium ball has high specific gravity and the required dragging power is high, so the existing grinding system still has the problem of high power consumption.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the utility model provides a half finish grinding system to there is the low and big problem of power consumption in the current cement grinding technique of solution work efficiency.
In order to realize the above object, the embodiment of the utility model provides a semi-finished grinding system, semi-finished grinding system includes the roller press, goes out roller press material lifting machine, high-frequency vibration sieve, tube mill, goes out mill material lifting machine, selection powder machine and dust collector, the discharge gate of roller press with it connects to go out the feed inlet of roller press material lifting machine, go out roller press material lifting machine the discharge gate with the feed inlet of high-frequency vibration sieve is connected, the first discharge gate of high-frequency vibration sieve with the feed inlet of roller press is connected, the second discharge gate of high-frequency vibration sieve with the feed inlet of tube mill is connected, the third discharge gate of high-frequency vibration sieve with the discharge gate of going out mill material lifting machine respectively with the feed inlet of selection powder machine is connected, the feed inlet of going out mill material lifting machine with the discharge gate of tube mill is connected, the semi-finished product discharge gate of selection powder machine through first material transport chute with the feed inlet of tube mill links with the And an air inlet of the dust collector is respectively connected with air outlets of the material elevator of the roll squeezer, the high-frequency vibrating screen, the tube mill and the powder concentrator through air pipelines.
Further, the semi-final grinding system further comprises a material elevator of the roller press, and a discharge hole of the material elevator of the roller press is connected with a feed hole of the roller press.
Further, a discharge hole of the dust collector is connected with a finished product conveying chute of the powder concentrator through at least one second material conveying chute.
Further, a third discharge hole of the high-frequency vibrating screen is connected with a feed hole of the tube mill through a pipeline provided with a control valve; and the air outlet of the roller press is connected with the air inlet of the material hoister of the roller press.
Further, the grinding bodies of the second chamber of the tube mill adopt wear-resistant ceramic balls.
Correspondingly, the embodiment of the utility model provides a still provide a cement grinding method, cement grinding method includes following step:
step a, extruding a material through a roller press to reduce the particle size of the material, and inputting the material into a high-frequency vibrating screen through a material lifter of the roller press;
b, sorting the extruded materials through a high-frequency vibrating screen, conveying the materials with the particle size of more than 1mm to a roller press through a material stabilizing bin for re-extrusion, conveying the materials with the particle size of more than 0.5mm and less than 1mm to a tube mill for grinding, and conveying the materials with the particle size of less than 0.5mm to a powder concentrator for separating cement finished products;
and c, inputting the materials ground by the tube mill into a powder concentrator through a mill-discharging material lifter to sort out a cement finished product, and conveying the materials with the particle size larger than that of the finished product to the tube mill through a first material conveying chute by the powder concentrator to grind again.
Further, when the steps a to c are carried out, the dust collector collects powder-containing gas generated by the roller press, the material lifting machine of the roller press, the high-frequency vibration sieve and the tube mill.
Further, the dust collector conveys the collected dust to a finished product conveying chute of the powder concentrator through a second material conveying chute.
The embodiment of the utility model provides a have following advantage: the semi-final grinding system provided by the embodiment of the utility model has the advantages that the former V-shaped powder selecting machine is replaced by the high-frequency vibrating screen, the sorting efficiency is higher, and the power consumption of the semi-final grinding system is reduced; the tube mill using the ceramic grinding body in the two bins improves the grinding efficiency, and the power consumption of the tube mill using the ceramic ball tube mill in the installed power of the tube mill with the same specification is reduced by 20 percent compared with the tube mill not using the ceramic ball.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic structural diagram of a semi-final grinding system according to an embodiment of the present invention;
fig. 2 is a flow chart of a cement grinding method provided by the embodiment of the present invention.
Description of reference numerals: 1. a roll squeezer; 2. discharging the material elevator of the roller press; 3. a high-frequency vibrating screen; 4. a tube mill; 5. a ground material elevator; 6. selecting a powder machine; 7. a dust collector; 8. feeding the material into a material lifter of a roller press; 31. a control valve; 61. a first material delivery chute; 62. a finished product conveying chute; 71. a second material delivery chute.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the semi-final grinding system comprises a roller press 1, a material elevator 2 of the roller press, a high-frequency vibrating screen 3, a tube mill 4, a material elevator 5 of the mill, a powder concentrator 6, a dust collector 7 and a material elevator 8 of the roller press. The material elevator 8 of the roller press is used for conveying materials from a batching station to the roller press 1, the discharge port of the material elevator 8 of the roller press is connected with the feed port of the roller press 1, the discharge port of the roller press 1 is connected with the feed port of the material elevator 2 of the roller press, the air outlet of the roller press 1 is connected with the air inlet of the material elevator 2 of the roller press, the discharge port of the material elevator 2 of the roller press is connected with the feed port of the high-frequency vibrating screen 3, the first discharge port of the high-frequency vibrating screen 3 is connected with the feed port of the roller press 1, the second discharge port of the high-frequency vibrating screen 3 is connected with the feed port of the tube mill 4, the third discharge port of the high-frequency vibrating screen 3 and the discharge port of the material elevator 5 of the mill are respectively connected with the feed port of the powder separator 6, the feed port of the material elevator 5 of the tube mill 4 is connected with the discharge port of the tube mill, a finished product discharge port of the powder concentrator 6 is provided with a finished product conveying chute 62; an air inlet of the dust collector 7 is respectively connected with air outlets of the material elevator 2 of the roller press, the high-frequency vibrating screen 3, the tube mill 4 and the powder concentrator 6 through air pipelines, and a discharge outlet of the dust collector 7 is connected with a finished product conveying chute 62 of the powder concentrator 6 through two second material conveying chutes 71.
The roller press 1 is used for pressing the material to reduce the particle size. The roller press 1 of the embodiment is a high-efficiency roller press, and the content of materials with the particle size of less than 0.5mm extruded by the high-efficiency roller press is more than 50%.
High-frequency vibration sieve 3 is used for the material of screening out different particle sizes, and high-frequency vibration sieve 3 replaces V type selection powder machine before, and the high-frequency vibration sieve 3 of this embodiment is double-deck sieve, can select the material of three kinds of different particle sizes, promptly: the particle size is greater than 1 mm's material, the particle size is greater than 0.5mm and is less than 1 mm's material, the particle size is less than 0.5 mm's material, the going to of three kinds of materials: (1) conveying the material with the particle size larger than 1mm to the roller press 1 for re-extrusion; (2) conveying the material with the particle size of more than 0.5mm and less than 1mm to a tube mill 4 for grinding; (3) and conveying the materials with the particle size of less than 0.5mm to a powder concentrator 6 to sort out the cement finished product. Further, for material balance of the system, the third discharge port of the high-frequency vibrating screen 3 is connected with the feed port of the tube mill 4 through a pipeline provided with a control valve 31. In addition, the high-frequency vibrating screen 3 also has the advantage of low installed power, the total installed power of the V-type powder concentrator is 875kw calculated according to 200 tons of cement production line per machine hour of the system, the installed power of the high-frequency vibrating screen 3 is only 80kw, the installed power is reduced by 777kw, the design utilization rate is 80% (hereinafter, the design utilization rate is all 80%), and the power consumption per ton of cement is reduced: 777kw 80%/200 ═ 3.11 kwh/t.
The tube mill 4 is used for grinding materials, the grinding bodies of the two bins of the tube mill 4 are wear-resistant ceramic balls, the specific gravity of the ceramic balls is smaller than that of traditional high-chromium balls, and the ceramic balls for the installed power of the tube mill 4 with the same specification are reduced by 20% compared with the ceramic balls without the ceramic balls. The main motor power with ceramic balls was 2500kwh and 2000kwh with high-chromium balls, calculated as 200 tons per system set-up, and the total installed power of tube mill 4 after the use of the ceramic balls was reduced by 500kwh, 500kwh 80%/200 being 2.0 kwh/t. The grinding efficiency is improved by using the tube mill 4 of the ceramic grinding body, and the power consumption of the tube mill 4 using ceramic balls in the mill installed power of the same specification is reduced by 20 percent compared with the tube mill 4 not using ceramic balls.
The powder concentrator 6 is used for concentrating out the cement finished product, and the powder concentration efficiency reaches more than 80%, and the cement finished product of concentrating out is exported through finished product conveying chute 62, and the material of selecting out the particle size and being greater than the finished product particle size then conveys to the tube mill 4 through first material conveying chute 61 and grinds once more. The dust collector 7 is used for collecting powder-containing gas generated by the roller press 1, the material elevator 2 of the roller press, the high-frequency vibrating screen 3 and the tube mill 4.
Correspondingly, as shown in fig. 2, an embodiment of the present invention further provides a cement grinding method, which includes the following steps:
step a, extruding a material by a roller press 1 to reduce the particle size of the material and inputting the material into a high-frequency vibrating screen 3 by a material elevator 2 out of the roller press;
b, sorting the extruded materials through a high-frequency vibrating screen 3, conveying the materials with the particle size of more than 1mm to a roller press 1 through a material stabilizing bin for re-extrusion, conveying the materials with the particle size of more than 0.5mm and less than 1mm to a tube mill 4 for grinding, and conveying the materials with the particle size of less than 0.5mm to a powder concentrator 6 for separating cement finished products;
and c, inputting the materials ground by the tube mill 4 into a powder concentrator 6 through a mill-outlet material lifter 5 to sort out a cement finished product, and conveying the materials with the particle size larger than that of the finished product to the tube mill 4 through a first material conveying chute 61 by the powder concentrator 6 to grind again.
Further, when steps a to c are carried out, the dust collector 7 collects the powder-containing gas generated by the roller press 1, the material elevator 2 of the roller press, the high-frequency vibrating screen 3 and the tube mill 4.
Further, the dust collector 7 conveys the collected dust to a finished product conveying chute 62 of the powder concentrator 6 through the finished product conveying chute 62.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (5)
1. A semi-final grinding system comprises a roller press, a roller press material lifting machine, a high-frequency vibrating screen, a tube mill, a mill-out material lifting machine, a powder concentrator and a dust collector, and is characterized in that a discharge hole of the roller press is connected with a feed inlet of the roller press material lifting machine, a discharge hole of the mill-out material lifting machine is connected with a feed inlet of the high-frequency vibrating screen, a first discharge hole of the high-frequency vibrating screen is connected with the feed inlet of the roller press, a second discharge hole of the high-frequency vibrating screen is connected with the feed inlet of the tube mill, a third discharge hole of the high-frequency vibrating screen and a discharge hole of the mill-out material lifting machine are respectively connected with the feed inlet of the powder concentrator, the feed inlet of the mill-out material lifting machine is connected with the discharge hole of the tube mill, a semi-finished product discharge hole of the powder concentrator is connected with the feed inlet of the tube mill through a first, and the air inlet of the dust collector is respectively connected with the air outlets of the material elevator of the roll squeezer, the high-frequency vibrating screen, the tube mill and the powder concentrator through air pipelines.
2. The semi-finish grinding system according to claim 1, further comprising a material elevator of a roller press, wherein a discharge port of the material elevator of the roller press is connected with a feed port of the roller press.
3. The semi-final grinding system according to claim 1 or 2, wherein the discharge port of the dust collector is connected with a finished product conveying chute of the powder concentrator through at least one second material conveying chute.
4. The semi-finish grinding system according to claim 3, wherein a third discharge port of the high-frequency vibrating screen is connected with a feed port of the tube mill through a pipeline provided with a control valve; and the air outlet of the roller press is connected with the air inlet of the material hoister of the roller press.
5. The semi-finish grinding system according to claim 1 or 2, wherein the grinding bodies of the second bin of the tube mill adopt wear-resistant ceramic balls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921027594.XU CN210545598U (en) | 2019-07-03 | 2019-07-03 | Semi-final grinding system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921027594.XU CN210545598U (en) | 2019-07-03 | 2019-07-03 | Semi-final grinding system |
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| CN210545598U true CN210545598U (en) | 2020-05-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180664A (en) * | 2019-07-03 | 2019-08-30 | 北京坚构创新科技有限公司 | Half final grinding system of one kind and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180664A (en) * | 2019-07-03 | 2019-08-30 | 北京坚构创新科技有限公司 | Half final grinding system of one kind and method |
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