CN105384370A - Cement processing raw material treatment method - Google Patents
Cement processing raw material treatment method Download PDFInfo
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- CN105384370A CN105384370A CN201510787771.4A CN201510787771A CN105384370A CN 105384370 A CN105384370 A CN 105384370A CN 201510787771 A CN201510787771 A CN 201510787771A CN 105384370 A CN105384370 A CN 105384370A
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Abstract
The invention relates to the technical field of cement processing and treatment and particularly relates to a cement processing raw material treatment method. The treatment method comprises the steps of regulating the ratio of raw materials including limestone, clay and iron powder through an automatic distribution device to meet the requirement of cement with different hardness; grinding the raw materials, namely enabling an electric motor to drive a grinding table to rotate through a speed reducer, enabling the materials to fall from a discharging device into the center of the grinding table through an air locking feeding device, throwing the materials to the edge of the grinding table under the action of a centrifugal force, and rolling and grinding the materials by a grinding roller; and homogenizing the raw materials, namely enabling the components of the raw materials to tend to be uniform and consistent in a reasonable coordination or pneumatic stirring way. The cement processing raw material treatment method is reasonable in design, convenient to treat and capable of favorably controlling the ratio of the raw materials through automatic equipment and favorably controlling the problems of nonuniform fineness of the raw materials, reaction inconsistence, great influences to clinker quality and high crude particle content through a fine grinding process.
Description
Technical field
The present invention relates to the processing treatment technical field of cement, be specifically related to cement processing raw material treatment process.
Background technology
Cement, powdery hydraulicity inorganic coagulation material.Add water after stirring and become slurry, can harden in atmosphere or better harden in water, and can the material such as sand, stone is cemented together securely.The history of cement can trace back to Chinese Qin'an the earth people from gulf before 5000 the earliest, and they have laid the ground of similar modern cement.The lime that uses under construction of roman and pozzuolanic mixture afterwards, this mixture is very similar to modern lime pozzolanic cement.With the concrete that its cementing rubble is made, after sclerosis, not only intensity is higher, and can also resist the erosion of fresh water or brackish water.For a long time, it, as a kind of important gelling material, is widely used in the engineerings such as civil construction, water conservancy, national defence.
In cement industry, ball-milling technology is applied to two production links, and a link is identical with Thermal Power Generation Industry, is applied to and grinds coal dust, provides coal-fired for producing; Another link is applied to and the cement clinker sintering block into is ground powdering, and this link plays vital effect for the production efficiency of cement production enterprise and product quality.In recent years, because investment in fixed assets increases, the pulling function of fast development to cement output of infrastructure construction, real estate was fairly obvious.Under huge demand pull, cement output will keep comparatively stable growth.
But existing cement complete processing is coarse, well can not control the fine and closely woven degree of cement slurry, raw material fineness is uneven, and reactions vary causes, and very large on the impact of clinker quality, the problem that coarse particles is many, directly affects cement quality defective.
Summary of the invention
The object of this invention is to provide cement processing raw material treatment process, it is reasonable in design, process is shared, the proportioning controlling raw material is can be good at by automatic equipment, and by meticulous grinding process, can be good at controlling raw material fineness uneven, reactions vary causes, very large on the impact of clinker quality, the problem that coarse particles is many.
In order to solve the problem existing for background technology, the present invention is by the following technical solutions: its processing and treating method:
Step one: Wingdale, clay, iron powder are adjusted proportioning raw materials by automatic allocation device, to meet the demand of different hardness cement;
Step 2: raw grinding, electric motor is rotated by deceleration device band movable grinding disc, material falls mill central authorities by lock feeding device through blanking scraper-trough conveyer, is thrown toward mill edge under the influence of centrifugal force, is subject to the spreading grinding of grinding roller, material after pulverizing overflows from the edge of mill, taken up oven dry by from nozzle at high speeds hot gas flow upwards, according to the difference of gas velocity, partial material is taken in high-efficient powder concentrator by air-flow, meal turns back on mill after being separated, grinding again; Fine powder then goes out mill with air-flow, collects, be product in system dust arrester installation, not by the coarse particles material that hot gas flow takes up, overflows after mill and is fed powder separating machine by the chapelet of outer circulation, and coarse particles falls back mill, again extrudes grinding;
Step 3: raw material homogenizing process, the raw material after grinding, by modes such as reasonably combined or pneumatic agitation, make its composition be tending towards the process of uniformity;
Intermittent type homogenization system: pressurized air enters the bed of material in storehouse through the air-permeable layer of bottom of the reservior inflation mechanism, make in storehouse, to expect that powder loosens and is fluidization, inflation mechanism each district in bottom of the reservior changes intake pressure or air input according to certain rules, can make also to produce rolling and high degree of agitation up and down by same rule in fluidised powder, thus full storehouse raw material are fully mixed, finally reach the object that uniform composition is consistent;
Continous way raw material homogenization system: " funneling effect " (or the claiming mouse hole effect) produced under adopting pneumatic blending and action of gravity, cuts multilayer charge level as far as possible and is mixed when raw meal powder is fallen to whereabouts.Simultaneously, under the effect of different fluidization air, make the fluidisation expansion varied in size along charge level parallel in storehouse, the discharging of some regions, some regions fluidisation, thus make charge level in storehouse produce radial mixing homogenizing, briefly namely: pneumatic blending, Gravity Homogenization, radial mixing homogenizing, three kinds of homogenizings have mated overall homogenizing.
As preferably, described raw grinding raw material fineness affects the calcinating speed of grog, and also affect the quality of grog, raw material are thinner, the formation of grog is faster, output increased, and free calcium oxide decline, but meticulous after, little on the impact of calcining, can make the production declining of raw mill on the contrary, power consumption obviously raises, and therefore will limit coarse grained content in raw material.
Beneficial effect of the present invention: it is reasonable in design, process is shared, and can be good at by automatic equipment the proportioning controlling raw material, and by meticulous grinding process, can be good at controlling raw material fineness uneven, reactions vary causes, very large on the impact of clinker quality, the problem that coarse particles is many.
Embodiment
The present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below the present invention is further elaborated.Should be appreciated that embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
This embodiment is by the following technical solutions: its processing and treating method:
Step one: Wingdale, clay, iron powder are adjusted proportioning raw materials by automatic allocation device, to meet the demand of different hardness cement;
Step 2: raw grinding, electric motor is rotated by deceleration device band movable grinding disc, material falls mill central authorities by lock feeding device through blanking scraper-trough conveyer, is thrown toward mill edge under the influence of centrifugal force, is subject to the spreading grinding of grinding roller, material after pulverizing overflows from the edge of mill, taken up oven dry by from nozzle at high speeds hot gas flow upwards, according to the difference of gas velocity, partial material is taken in high-efficient powder concentrator by air-flow, meal turns back on mill after being separated, grinding again; Fine powder then goes out mill with air-flow, collects, be product in system dust arrester installation, not by the coarse particles material that hot gas flow takes up, overflows after mill and is fed powder separating machine by the chapelet of outer circulation, and coarse particles falls back mill, again extrudes grinding;
Step 3: raw material homogenizing process, the raw material after grinding, by modes such as reasonably combined or pneumatic agitation, make its composition be tending towards the process of uniformity;
Intermittent type homogenization system: pressurized air enters the bed of material in storehouse through the air-permeable layer of bottom of the reservior inflation mechanism, make in storehouse, to expect that powder loosens and is fluidization, inflation mechanism each district in bottom of the reservior changes intake pressure or air input according to certain rules, can make also to produce rolling and high degree of agitation up and down by same rule in fluidised powder, thus full storehouse raw material are fully mixed, finally reach the object that uniform composition is consistent;
Continous way raw material homogenization system: " funneling effect " (or the claiming mouse hole effect) produced under adopting pneumatic blending and action of gravity, cuts multilayer charge level as far as possible and is mixed when raw meal powder is fallen to whereabouts.Simultaneously, under the effect of different fluidization air, make the fluidisation expansion varied in size along charge level parallel in storehouse, the discharging of some regions, some regions fluidisation, thus make charge level in storehouse produce radial mixing homogenizing, briefly namely: pneumatic blending, Gravity Homogenization, radial mixing homogenizing, three kinds of homogenizings have mated overall homogenizing.
As preferably, described raw grinding raw material fineness affects the calcinating speed of grog, and also affect the quality of grog, raw material are thinner, the formation of grog is faster, output increased, and free calcium oxide decline, but meticulous after, little on the impact of calcining, can make the production declining of raw mill on the contrary, power consumption obviously raises, and therefore will limit coarse grained content in raw material.
Control the meaning of raw meal particulate distribution:
Raw material fineness is uneven, and reactions vary causes, especially coarse particles, and reaction is very slow, and very large on the impact of clinker quality, coarse particles is many, and under same calcination condition, grog Free CaO content is higher.Therefore coarse grained content in raw material will be limited.
Most popular is at present many streams formula homogenizing storehouse, main Types has: IBAU type centre chamber homogenizing storehouse, CF type controlling streaming homogenizing storehouse, TP type many streams formula homogenizing storehouse, NC type many streams formula homogenizing storehouse, general many employing TP type many streams formula homogenizing storehouse, its principle of work: lay particular emphasis on the gravity mixing effect in storehouse, substantially pneumatic homognization or need not be reduced do in order to simplified apparatus and save electric power, a small-sized stir storehouse is set up in most bottom of the reservior, and power consumption is little.
Beneficial effect of the present invention: it is reasonable in design, process is shared, and can be good at by automatic equipment the proportioning controlling raw material, and by meticulous grinding process, can be good at controlling raw material fineness uneven, reactions vary causes, very large on the impact of clinker quality, the problem that coarse particles is many.
The above, only in order to technical scheme of the present invention to be described and unrestricted, other amendment that those of ordinary skill in the art make technical scheme of the present invention or equivalently to replace, only otherwise depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of right of the present invention.
Claims (2)
1. cement processing raw material treatment process, is characterized in that its processing and treating method:
Step one: Wingdale, clay, iron powder are adjusted proportioning raw materials by automatic allocation device, to meet the demand of different hardness cement;
Step 2: raw grinding, electric motor is rotated by deceleration device band movable grinding disc, material falls mill central authorities by lock feeding device through blanking scraper-trough conveyer, is thrown toward mill edge under the influence of centrifugal force, is subject to the spreading grinding of grinding roller, material after pulverizing overflows from the edge of mill, taken up oven dry by from nozzle at high speeds hot gas flow upwards, according to the difference of gas velocity, partial material is taken in high-efficient powder concentrator by air-flow, meal turns back on mill after being separated, grinding again; Fine powder then goes out mill with air-flow, collects, be product in system dust arrester installation, not by the coarse particles material that hot gas flow takes up, overflows after mill and is fed powder separating machine by the chapelet of outer circulation, and coarse particles falls back mill, again extrudes grinding;
Step 3: raw material homogenizing process, the raw material after grinding, by modes such as reasonably combined or pneumatic agitation, make its composition be tending towards the process of uniformity;
Intermittent type homogenization system: pressurized air enters the bed of material in storehouse through the air-permeable layer of bottom of the reservior inflation mechanism, make in storehouse, to expect that powder loosens and is fluidization, inflation mechanism each district in bottom of the reservior changes intake pressure or air input according to certain rules, can make also to produce rolling and high degree of agitation up and down by same rule in fluidised powder, thus full storehouse raw material are fully mixed, finally reach the object that uniform composition is consistent;
Continous way raw material homogenization system: " funneling effect " (or the claiming mouse hole effect) produced under adopting pneumatic blending and action of gravity, cuts multilayer charge level as far as possible and is mixed when raw meal powder is fallen to whereabouts; Simultaneously, under the effect of different fluidization air, make the fluidisation expansion varied in size along charge level parallel in storehouse, the discharging of some regions, some regions fluidisation, thus make charge level in storehouse produce radial mixing homogenizing, briefly namely: pneumatic blending, Gravity Homogenization, radial mixing homogenizing, three kinds of homogenizings have mated overall homogenizing.
2. cement processing raw material treatment process according to claim 1, it is characterized in that described raw grinding raw material fineness affects the calcinating speed of grog, also affect the quality of grog, raw material are thinner, the formation of grog is faster, output increased, and free calcium oxide decline, but meticulous after, little on the impact of calcining, can make the production declining of raw mill on the contrary, power consumption obviously raises, and therefore will limit coarse grained content in raw material.
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| CN201510787771.4A CN105384370A (en) | 2015-11-17 | 2015-11-17 | Cement processing raw material treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109824284A (en) * | 2017-11-23 | 2019-05-31 | 湖南昌迪环境科技有限公司 | A kind of cement slurry additive and its application and cement production process |
| CN110066124A (en) * | 2019-04-22 | 2019-07-30 | 天津山水水泥有限公司 | A kind of silicate cement mud dry powder fast homogeneous method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481224A (en) * | 2009-01-31 | 2009-07-15 | 合肥水泥研究设计院 | Carbide slag drying method for vertical mill |
| CN104909586A (en) * | 2015-05-13 | 2015-09-16 | 张芳 | High-intensity cement preparation method |
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2015
- 2015-11-17 CN CN201510787771.4A patent/CN105384370A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481224A (en) * | 2009-01-31 | 2009-07-15 | 合肥水泥研究设计院 | Carbide slag drying method for vertical mill |
| CN104909586A (en) * | 2015-05-13 | 2015-09-16 | 张芳 | High-intensity cement preparation method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109824284A (en) * | 2017-11-23 | 2019-05-31 | 湖南昌迪环境科技有限公司 | A kind of cement slurry additive and its application and cement production process |
| CN109824284B (en) * | 2017-11-23 | 2021-08-27 | 湖南昌迪环境科技有限公司 | Cement raw material additive, application thereof and cement production process |
| CN110066124A (en) * | 2019-04-22 | 2019-07-30 | 天津山水水泥有限公司 | A kind of silicate cement mud dry powder fast homogeneous method |
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