CN202337732U - System for producing cement by separated grinding - Google Patents

System for producing cement by separated grinding Download PDF

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Publication number
CN202337732U
CN202337732U CN2011204836230U CN201120483623U CN202337732U CN 202337732 U CN202337732 U CN 202337732U CN 2011204836230 U CN2011204836230 U CN 2011204836230U CN 201120483623 U CN201120483623 U CN 201120483623U CN 202337732 U CN202337732 U CN 202337732U
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China
Prior art keywords
slag
powder
storehouse
precipitator
grinding
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Expired - Lifetime
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CN2011204836230U
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Chinese (zh)
Inventor
贾国林
武学龙
赵建清
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Jiugang Group Hongda Building Materials Co Ltd
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Jiugang Group Hongda Building Materials Co Ltd
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Abstract

The utility model provides a system for producing cement by separated grinding. The system comprises a clinker grinding process, a slag grinding process and a batching homogenizing process, wherein the clinker grinding process is formed by connecting a clinker silo, a gypsum stockpile, a coal ash storehouse, a ball mill, a powder concentrator, a ball-milling dust collector, a lower air inclined slot of the ball-milling dust collector and a clinker powder storehouse; the slag grinding process is formed by connecting a slag storehouse, a gypsum stockpile, a vertical mill, a vertical-milling dust collector, a lower air inclined slot of the vertical-milling dust collector and a slag powder storehouse; the clinker grinding process and the slag grinding process are connected with the batching homogenizing process; the batching homogenizing process is formed by connecting a clinker powder storehouse bottom batching scale, a slag powder storehouse bottom batching scale, a storehouse bottom air conveying inclined slot, a material mixer and a finished cement storage elevator; the clinker powder storehouse bottom batching scale is connected with the clinker powder storehouse; and the slag powder storehouse bottom batching scale is connected with the slag powder storehouse. Through the utility model, the produced cement has the advantages of low cost and good performance.

Description

Grinding is produced the system of cement respectively
Technical field
The utility model belongs to field of cement production, particularly a kind of system of grinding production cement respectively that is used for.
Background technology
Present domestic cement industry adopts " combined grinding " explained hereafter cement, goes into the ball mill grinding after being about to cement clinker and other raw materials (granulated blast-furnace slag, flyash, gypsum etc.) mixing and obtains finished product." combined grinding " explained hereafter cement, the blended material slag is difficult to levigately because of the grindability difference, and its latent hydraulicity is difficult to performance, and the slag addition content is very low, and the manufacture of cement cost is high; And the grog particle is good because of grindability, meticulous by grinding again, and aquation is condensed too fastly in use, and hydration heat is concentrated and is discharged, and causes the fissured generation of concrete shrinkage; And the ball mill mill efficiency is low, and mill hourly output is low, and grinding pow consumption is high, and production cost is difficult to reduce.
Because granulated blast-furnace slag (slag) grindability is more about 30% than cement clinker difference, certainly leads to " selectivity " grinding, cause the size distribution of various materials in the finished product different, though cement specific surface area reaches 350m 2About/Kg, but be prone to mill, cause the fissured grog of concrete shrinkage very thin by grinding easily, specific surface area reaches 400 m 2More than/the Kg, and the slag that latent hydraulicity is very high in the cement is levigate owing to not having, and specific surface area is merely 180-230m 2/ Kg, the hydraulicity is difficult to bring into play, causes the addition content of blended material in the cement very low.The cement mixture addition content that uses " combined grinding " to produce at present is merely 18-38%.
Research according to Germany shows that in the slag cement of common grinding, the characteristic diameter of grog is less than cement, and scoriaceous characteristic diameter is greater than cement, and the characteristic diameter of gypsum is much smaller than cement; The slag cement of grinding is formed under the situation identical with specific surface area at material respectively, compares with the slag cement of common grinding, and scoriaceous characteristic diameter on average reduces by 7.5 μ m, and the characteristic diameter of grog on average reduces by 2.0 μ m.Research shows that when grog and the common grinding of slag, cement specific surface area is 350 m 2During/Kg, the slag specific surface area has only 232~282 m 2/ Kg.For the mixing material than grog grindability difference, its fineness and expectation is opposite during combined grinding, thicker than grog.
The utility model content
The purpose of the utility model provides the system that a kind of grinding is respectively produced cement, and the cost that exists with the cement that solves combined grinding production in the prior art is high, the problem of poor performance.
The utility model adopts following technical scheme:
The system that a kind of grinding is respectively produced cement; Comprise grog powder-grinding process, slag milling operation and batching homogenization process, said grog powder-grinding process is formed by connecting in air flume, chamotte powder storehouse under clinker warehouse, gypsum storehouse, flyash storehouse, ball mill, powder separating machine, ball milling dust-precipitator, the ball milling dust-precipitator; Said slag milling operation is formed by connecting in air flume, slag powders storehouse under slag storehouse, gypsum storehouse, vertical mill, Vertical Mill dust-precipitator, the Vertical Mill dust-precipitator; Connect the batching homogenization process after said grog powder-grinding process and the slag milling operation, said batching homogenization process is formed by connecting chamotte powder bottom of the reservior burden balance, slag powders bottom of the reservior burden balance, bottom of the reservior air conveyer flume, mixer, finished cement warehouse-in lift; Said chamotte powder bottom of the reservior burden balance connect the chamotte powder storehouse, and said slag powders bottom of the reservior burden balance connect the slag powders storehouse.
Be provided with air flume under the powder separating machine between said powder separating machine and the ball mill.
Further improvement as the utility model; Be provided with ball mill mill tail lift between said ball mill and the powder separating machine; Be provided with chamotte powder warehouse-in lift under the said ball milling dust-precipitator between air flume and the chamotte powder storehouse, be provided with slag powders warehouse-in lift under the said Vertical Mill dust-precipitator between air flume and the slag powders storehouse.
The beneficial effect of the utility model is:
The utility model can be selected optimal process routes according to the characteristics of material and equipment, and it is minimum that the comprehensive energy consumption of cement grinding is dropped to, and can make grog and blended material reach the size-grade distribution of the best; So that making full use of to blended material filling effect, lateral reactivity; Make various materials limit with the largest potentiality bring into play, blended material is the place of cement grog to a greater degree, resource is fully used; Reduce the cement products cost, improve enterprise competitiveness.
Original combined grinding technology is that grog+slag+flyash+gypsum is measured respectively, and material directly feeds ball mill through belt and carries out grinding, after the powder separating machine sorting, gets into stockyard.The slag powders particle diameter major part that research shows combined grinding is more than 60 μ m, and its potential hydraulically active is difficult to normally brought into play, and only uses as packing material in cement hydration process, and volume must be restricted.
The respective grinding process of the utility model is that slag powders+gypsum grinding in Vertical Mill is become slag powders, with grog+flyash+gypsum grinding ripe material powder in ball mill, after the proportioning metering, gets in the stockyard through the mixer mixing.Respectively grinding can effectively solve slag can not the levigated production bottleneck, improve following the high-activity particle ratio of 20 μ m in the slag micropowder, for the raising fine slag contents creates conditions.
Adopt the cement of the utility model production to have the advantage that cost is low, performance is good, can also reduce grog and fire consumption natural mineral raw.
Description of drawings
Fig. 1 is the synoptic diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
As shown in Figure 1; The utility model is the system of grinding production cement respectively; Comprise grog powder-grinding process, slag milling operation and batching homogenization process, the grog powder-grinding process is formed by connecting in air flume 11, chamotte powder storehouse 7 under clinker warehouse 1, gypsum storehouse 2, flyash storehouse 3, ball mill, powder separating machine, ball milling dust-precipitator, the ball milling dust-precipitator; The slag milling operation is formed by connecting in air flume 15, slag powders storehouse 12 under slag storehouse 8, gypsum storehouse 2, vertical mill, Vertical Mill dust-precipitator, the Vertical Mill dust-precipitator; Connect the batching homogenization process after grog powder-grinding process and the slag milling operation, the batching homogenization process is formed by connecting chamotte powder bottom of the reservior burden balance 16, slag powders bottom of the reservior burden balance 17, bottom of the reservior air conveyer flume 18, mixer 19, finished cement warehouse-in lift 20; Chamotte powder bottom of the reservior burden balance 16 connect chamotte powder storehouse 7, and slag powders bottom of the reservior burden balance 17 connect slag powders storehouse 12.
Be provided with air flume 23 under the powder separating machine between powder separating machine and the ball mill.
With reference to Fig. 1; Be provided with ball mill mill tail lift 13 between ball mill and the powder separating machine; Be provided with chamotte powder warehouse-in lift 14 under the ball milling dust-precipitator between air flume 11 and the chamotte powder storehouse 7, be provided with slag powders warehouse-in lift 21 under the Vertical Mill dust-precipitator between air flume 15 and the slag powders storehouse 12.
With reference to Fig. 1, ball mill comprises first ball mill 41 and second ball mill 42; Powder separating machine comprises first powder separating machine 51 and second powder separating machine 52; The ball milling dust-precipitator comprises the first ball milling dust-precipitator 61 and the second ball milling dust-precipitator 62, and vertical mill comprises first vertical mill 91 and second vertical mill 92; The Vertical Mill dust-precipitator comprises the first Vertical Mill dust-precipitator 101 and the second Vertical Mill dust-precipitator 102.
The working process of the utility model embodiment is following:
Gypsum in grog in the clinker warehouse 1, the gypsum storehouse 2, the flyash in the flyash storehouse 3 are sent into first powder separating machine 51 with second powder separating machine 52 selects powder through ball mill mill tail lift after through first ball mill 41 and second ball mill, 42 grindings, and meal returns ball mill continuation grinding through air flume under the powder separating machine 23; Fine powder becomes the finished product chamotte powder through first dust-precipitator 61 and 62 collections of second dust-precipitator, is sent in the chamotte powder storehouse 7 to store.
Gypsum in slag in the slag storehouse, the gypsum storehouse through the grinding of first vertical mill 91 and second vertical mill 92, the first Vertical Mill dust-precipitator 101 and the second Vertical Mill dust-precipitator 102, collect and become the finished product slag powders, be admitted in the slag powders storehouse 12 with slag powders warehouse-in lift 21 through air flume under the Vertical Mill dust-precipitator 15 and store.
After chamotte powder, slag powders process chamotte powder bottom of the reservior burden balance 16 and slag powders bottom of the reservior burden balance 17 are prepared burden in proportion, stir homogenizing, send into the outbound of delivering in the cement silo 22 through finished cement warehouse-in lift 20 through bottom of the reservior air conveyer flume 18, mixer 19.
In the implementation process of this embodiment,, in conjunction with property of raw material, take " grog+flyash+gypsum " to become specific surface area 350m through the ball mill grinding according to the principle of " grog corase grind, slag fine grinding, flyash grinding aid " 2The chamotte powder of/Kg, the flyash mixed ratio in chamotte powder that wherein has the grinding aid effect is fixed on 5-10%; " slag+gypsum " becomes specific surface area 450m through the Vertical Mill grinding 2The slag powders that/Kg is above is strengthened the activity excitation effect of gypsum to slag powders, through mixer chamotte powder, the slag powders of different ratios is mixed and produces various general cement.
Difference grinding through various materials; Utilize gypsum to scoriaceous activity excitation effect; Excited scoriaceous lateral reactivity to greatest extent; Avoided the grog particulate to cross grinding, the flyash that is prone to mill is ground very carefully in ball mill, and flyash has played the effect of " grinding aid " again in the grog grinding process simultaneously.Mixed finished cement meets theoretical " the particle hydrated theory " pursued of cement grinding process and reaches " particle closestpacking " theory.
Original combined grinding technology is that grog+slag+flyash+gypsum is measured respectively, and material directly feeds ball mill through belt and carries out grinding, after the powder separating machine sorting, gets into stockyard.The slag powders particle diameter major part that research shows combined grinding is more than 60 μ m, and its potential hydraulically active is difficult to normally brought into play, and only uses as packing material in cement hydration process, and volume must be restricted.
The respective grinding process of the utility model is that slag powders+gypsum grinding in Vertical Mill is become slag powders, with grog+flyash+gypsum grinding ripe material powder in ball mill, after the proportioning metering, gets in the stockyard through the mixer mixing.Respectively grinding can effectively solve slag can not the levigated production bottleneck, improve following the high-activity particle ratio of 20 μ m in the slag micropowder, for the raising fine slag contents creates conditions.
The cement of producing through this utility model has increased substantially the blended material incorporation, has reduced the manufacture of cement cost.Wherein the P.O42.5 cement mixture has reached 20%; P.S.A42.5 cement has reached 50%; P.C32.5 cement has reached 50%, and P.S.B32.5 cement has reached 70%, has all realized the blended material maximum doping quantity of GB175-2007 " general purpose portland cement " standard code.And cement has, and hydration heat is low, workability good, the later strength advantages of higher.

Claims (4)

1. grinding system of producing cement respectively; It is characterized in that: comprise grog powder-grinding process, slag milling operation and batching homogenization process, said grog powder-grinding process is formed by connecting air flume (11), chamotte powder storehouse (7) under clinker warehouse (1), gypsum storehouse (2), flyash storehouse (3), ball mill, powder separating machine, ball milling dust-precipitator, the ball milling dust-precipitator; Said slag milling operation is formed by connecting air flume (15), slag powders storehouse (12) under slag storehouse (8), gypsum storehouse (2), vertical mill, Vertical Mill dust-precipitator, the Vertical Mill dust-precipitator; Be connected to the batching homogenization process after said grog powder-grinding process and the slag milling operation, said batching homogenization process is formed by connecting chamotte powder bottom of the reservior burden balance (16), slag powders bottom of the reservior burden balance (17), bottom of the reservior air conveyer flume (18), mixer (19), finished cement warehouse-in lift (20); Said chamotte powder bottom of the reservior burden balance (16) connect chamotte powder storehouse (7), and said slag powders bottom of the reservior burden balance (17) connect slag powders storehouse (12).
2. the system that grinding respectively as claimed in claim 1 is produced cement is characterized in that: be provided with air flume under the powder separating machine (23) between said powder separating machine and the ball mill.
3. according to claim 1 or claim 2 the difference grinding system that produces cement; It is characterized in that: be provided with ball mill mill tail lift (13) between said ball mill and the powder separating machine; Be provided with chamotte powder warehouse-in lift (14) under the said ball milling dust-precipitator between air flume (11) and chamotte powder storehouse (7), be provided with slag powders warehouse-in lift (21) under the said Vertical Mill dust-precipitator between air flume (15) and slag powders storehouse (12).
4. the system that grinding respectively as claimed in claim 3 is produced cement, it is characterized in that: said ball mill comprises first ball mill (41) and second ball mill (42); Said powder separating machine comprises first powder separating machine (51) and second powder separating machine (52); Said ball milling dust-precipitator comprises the first ball milling dust-precipitator (61) and the second ball milling dust-precipitator (62), and said vertical mill comprises first vertical mill (91) and second vertical mill (92); Said Vertical Mill dust-precipitator comprises the first Vertical Mill dust-precipitator (101) and the second Vertical Mill dust-precipitator (102).
CN2011204836230U 2011-11-29 2011-11-29 System for producing cement by separated grinding Expired - Lifetime CN202337732U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103084259A (en) * 2013-02-27 2013-05-08 南京凯盛国际工程有限公司 Outer circulation type vertical mill system
CN103801443A (en) * 2013-11-20 2014-05-21 李培彦 Active mineral waste residue powder production system and technological process thereof
CN104193207A (en) * 2014-09-19 2014-12-10 南京凯盛国际工程有限公司 System for preparing cement through separately grinding
CN104261707A (en) * 2014-09-19 2015-01-07 南京凯盛国际工程有限公司 Cement external-circulation vertical milling preparation system capable of adjusting particle size distribution
CN104549660A (en) * 2014-11-27 2015-04-29 广西鱼峰水泥股份有限公司 Method for increasing ground cement yield
CN106861885A (en) * 2017-04-24 2017-06-20 安徽恒源煤电股份有限公司 A kind of gypsum line grinding machine grinding head storehouse dust collecting structure
CN107930823A (en) * 2017-11-13 2018-04-20 盐城吉达环保设备有限公司 One kind series connection powder concentrator grinding system technique
CN109809744A (en) * 2019-03-07 2019-05-28 邝文辉 Glue, mixed, the integrated concrete for making method of concrete
CN109956689A (en) * 2019-04-24 2019-07-02 邝文辉 Glue, the concrete integrated manufacture method of concrete
CN110228957A (en) * 2019-06-20 2019-09-13 梅州市永恒建材有限公司 A kind of novel concrete production equipment and the method using equipment production cement

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103084259A (en) * 2013-02-27 2013-05-08 南京凯盛国际工程有限公司 Outer circulation type vertical mill system
CN103801443A (en) * 2013-11-20 2014-05-21 李培彦 Active mineral waste residue powder production system and technological process thereof
CN103801443B (en) * 2013-11-20 2016-08-17 李培彦 A kind of active slag powder production system and technological process thereof
CN104193207B (en) * 2014-09-19 2015-11-18 南京凯盛国际工程有限公司 A kind of separate compiling prepares the device of cement
CN104261707B (en) * 2014-09-19 2015-11-11 南京凯盛国际工程有限公司 A kind of cement outer circulation Vertical Mill preparation system of grain size adjustable distribution
CN104261707A (en) * 2014-09-19 2015-01-07 南京凯盛国际工程有限公司 Cement external-circulation vertical milling preparation system capable of adjusting particle size distribution
CN104193207A (en) * 2014-09-19 2014-12-10 南京凯盛国际工程有限公司 System for preparing cement through separately grinding
CN104549660A (en) * 2014-11-27 2015-04-29 广西鱼峰水泥股份有限公司 Method for increasing ground cement yield
CN106861885A (en) * 2017-04-24 2017-06-20 安徽恒源煤电股份有限公司 A kind of gypsum line grinding machine grinding head storehouse dust collecting structure
CN107930823A (en) * 2017-11-13 2018-04-20 盐城吉达环保设备有限公司 One kind series connection powder concentrator grinding system technique
CN109809744A (en) * 2019-03-07 2019-05-28 邝文辉 Glue, mixed, the integrated concrete for making method of concrete
CN109956689A (en) * 2019-04-24 2019-07-02 邝文辉 Glue, the concrete integrated manufacture method of concrete
CN110228957A (en) * 2019-06-20 2019-09-13 梅州市永恒建材有限公司 A kind of novel concrete production equipment and the method using equipment production cement

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Granted publication date: 20120718

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