CN104030588B - A kind of method of green ecological industrial solid castoff and the integrated grinding of cement general character - Google Patents
A kind of method of green ecological industrial solid castoff and the integrated grinding of cement general character Download PDFInfo
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- CN104030588B CN104030588B CN201410289143.9A CN201410289143A CN104030588B CN 104030588 B CN104030588 B CN 104030588B CN 201410289143 A CN201410289143 A CN 201410289143A CN 104030588 B CN104030588 B CN 104030588B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
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Abstract
The invention discloses a kind of method of green ecological industrial solid castoff and the integrated grinding of cement general character, comprise the accurate batching step of raw material, online baking step, precomminution step, high-effective classifying selects powder step, grinding and particle shaping step, micro mist trap and storing step, immediate feedback formula operate rate-determining steps.Present invention achieves a mill multiplex, can production diversification product, many-sided energy-saving and emission-reduction, greatly reduce cement industry to the demand of fossil resource, have great pushing effect to the transition and upgrade of whole building material industry.
Description
Technical field
The invention belongs to industrial solid castoff highly efficient regeneration recycling field, relate to a kind of method of green ecological industrial solid castoff and the integrated grinding of cement general character.
Background technology
Cement grinding is one of most important key link in manufacture of cement, and energy consumption accounts for produces 30% of total energy consumption and more than 40% of total power consumption.Realize the Sustainable development of cement and concrete industry, must walk with " less energy-consumption, low consumption of resources, low stain " be feature the road of " ecological ideas production ".In product design, produce, use and scrap in the whole life-cycle processes of process, make every effort to adopt clean energy and raw material, advanced technologies and equipment, improve measure such as comprehensive utilization grade, the overall goal of " energy-conservation, material-saving, reduction of discharging, synergy " obtaining.
Industrial solid wastes, refer to the solid waste produced in industrial production activities, as slag, slag, Fe alloy slag, flyash, coal gangue, bottom slag, sulfate slag, salt slurry, red mud, mine tailing etc.Long-term production practice show, when grog and industrial solid castoff intergrinding are produced cement, due to the difference of grog and industrial solid castoff grindability, the industrial solid castoff micro mist specific surface area causing difficult mill in cement is low, when hydrated cementitious, the activity of industrial solid castoff is not in full use, cause some performance of cement on the low side, and the volume of industrial solid castoff in cement can not be improved fully.
Expert proposes the technology pattern adopting cement, industrial solid castoff separate compiling, solve the problem of raw material grindability difference, but this relates to again that factory building repeats to take up an area, civil engineering and facility investment, manage and operate workman's number of patrolling and examining, overhaul maintenance load, the macro-plan of spare parts quantity, daily current assets etc. aspect.
Therefore, cement industry more and more needs a kind of new technique, the needs produced when can meet cement busy season of demands, again can when cement demand dull season manufacture solid waste micro mist to improve comprehensive rate of utilization and the economic benefit of equipment.
Summary of the invention
The object of the invention is, adopt ball mill one to grind multiplexly to dissolve in a large number industrial solid castoff in industrial mode, extract the valuable metal of wherein high added value as particle steel, Iron concentrate etc., obtain simultaneously and there is Gao Bibiao, high energy position, highly active industrial solid castoff micro mist, be used for producing the complex cement of various model, to reach the transition and upgrade pattern of cement industry energy-saving and emission-reduction, green production, for solid basis is established by built environment friendly, conservation-minded society.
Object of the present invention is achieved through the following technical solutions:
A method for green ecological industrial solid castoff and the integrated grinding of cement general character, comprises the accurate batching step of raw material, online baking step, precomminution step, high-effective classifying selects powder step, grinding and particle shaping step, micro mist trap and storing step, immediate feedback formula operate rate-determining steps:
The accurate batching step of raw material, by precisely preparing burden according to predetermined ratio to the starting material left in material storage yard and bank, with the needs of satisfied production variant production.Starting material are cement raw material or industrial solid castoff.Plate-type feeding, belted electronic balance, belt conveyor can be used to carry out feeding weigh and carry.
Online baking step, by after step 1 is prepared burden by material dispersion material curtain and hot air convection heat exchange, the treating material processing water content 0 ~ 25% to water content below 2%.Hotblast stove can be used, online dry device processes.
Precomminution step, become material cake by the express material after step 2 being processed, make the material particles surface in cake spread all over tiny crack.Median plate chain elevator, constant weight current stabilization storehouse, roll squeezer can be used to process.
High-effective classifying selects powder step, passes through select the micro mist of specific surface area more than 280 square meters per kilogram after the material cake after step 3 being processed is broken up and supply subsequent step after collection, and the particle steel selected in starting material and Iron concentrate.High-efficiency dynamic powder separating machine, dust-precipitator, tail exhaust blower can be used to process.
Grinding and particle shaping step, micro mist step 4 obtained by ball mill grind to form the finished cement of specific surface area more than 380 square meters per kilogram or the industrial solid castoff micro mist of specific surface area more than 400 square meters per kilogram.Ball mill, dust-precipitator, exhaust blower, lift can be used to process.
Micro mist trapping and storing step, to the product trapping of step 5 and classified storage.Wind can be used to send skewed slot, storage vault, dust-precipitator to process.
Advantage and effect
1, the recycle of large-scale industry solid waste regeneration resource degree of depth high added value is really achieved.
2, static online drying efficiency of drying is high, and consumption of coal is few, reduces once and the consumption of secondary energy, decreases the discharge of carbon, sulphur and oxynitride.
3, during present method process industrial solid castoff, system unit unit-hour output is high, and unit power consumption is low.
4, the particle steel of high added value in industrial solid castoff, Iron concentrate and other valuable metals can be extracted, directly melt down use.
5, the Gao Bibiao made, high energy position, high reactivity industrial solid castoff micro mist, the industries such as building materials are widely used in as supplementary cementitious material, the grog of a large amount of replacement high energy consumption, high cost, save the fossil resource such as Wingdale, coal, also drastically reduce the area the discharge of carbon, sulphur and oxynitride in grog preparation process simultaneously.
6, ball mill one grinds multiplex, can change the material variety of grinding as required at any time and not need to change mill interior lining panel form and steel ball grating.
7, grinding and particle shaping adopt the Optimized Matching of material particles characteristic and surface energy, mechanical energy and chemical energy to circulate to successively decrease general character to excite micro mist activity.
The auto-lock function of immediate feedback formula whole-course quality control optimization system during 8, immediate feedback formula operation control realization grinding different material.
9, precomminution processing that the hardness such as slag, slag, Fe alloy slag, mine tailing is higher, wear resistance good industrial solid castoff renewable resource time take mechanical energy and repeatedly to successively decrease the solid surface energy segregation valuable metal recycle system.
10, by methods such as process optimization, equipment layout, architectural compositions, make more than the constructure ground in precomminution workshop only have one deck, considerably reduce construction investment and facility investment.
11, immediate feedback formula whole-course quality control optimization system can meet the different material of grinding from lock technology, maximally utilise production unit, improve the operation factor of equipment and man efficiency, reduce production cost.
12, adopt the sound pollution comprehensive control measures such as noise control and architectural composition, realize the standard that the emission control of integrated milling production line sound pollution reaches 0 class acoustic environment functional zone in GB3096-2008.
Therefore, a kind of method of green ecological industrial solid castoff and the integrated grinding of cement general character, achieve a mill multiplex, can production diversification product, many-sided energy-saving and emission-reduction, greatly reduce cement industry to the demand of fossil resource, to the transition and upgrade of whole building material industry, there is great pushing effect.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of the inventive method
Specific embodiment
After production line employing " a kind of method of green ecological industrial solid castoff and the integrated grinding of cement general character " of many companies, obtain following achievement:
Embodiment 1, A company produce slag micropowder and cement.
When producing slag micropowder, it is the online oven dry of slag feeding of 12% by water content, after drying, water content is extrude in the raw material feeding precomminution of 1%, form material cake, after high-effective classifying selects powder to be broken up by material cake, select the fine powder of specific surface area more than 300 square meters per kilogram again and supply grinding and particle shaping after collection, select particle steel and Iron concentrate, obtain the slag micropowder that specific surface area is 435 square meters per kilogram;
When producing cement, it is the online oven dry of starting material feeding of 3% by the water content be made up of cement clinker, gypsum, slag, after drying, the raw material of moisture content 0.6% is sent in precomminution and is extruded, form material cake, after high-effective classifying selects powder to be broken up by material cake, select the fine powder of specific surface area more than 290 square meters per kilogram again and supply grinding and particle shaping after collection, obtaining the cement that specific surface area is 395 square meters per kilogram.
Embodiment 2, B company produce slag micro powder and cement.
When producing slag micro powder, it is the online oven dry of slag feeding of 12% by water content, after drying, water content is extrude in the raw material feeding precomminution of 1.5%, form material cake, after high-effective classifying selects powder to be broken up by material cake, select the fine powder of specific surface area more than 285 square meters per kilogram again and supply grinding and particle shaping after collection, select particle steel and Iron concentrate, obtain the slag micro powder that specific surface area is 405 square meters per kilogram;
When producing cement, it is the online oven dry of starting material feeding of 4.5% by the water content be made up of cement clinker, gypsum, flyash, slag, after drying, the raw material of moisture content 0.8% is sent in precomminution and is extruded, form material cake, after high-effective classifying selects powder to be broken up by material cake, select the fine powder of specific surface area more than 285 square meters per kilogram again and supply grinding and particle shaping after collection, obtaining the cement that specific surface area is 380 square meters per kilogram.
Embodiment 3, C company produce bottom slag-coal gangue composite micro-powder and cement.
When producing bottom slag-coal gangue composite micro-powder, be the bottom slag of 18%, the online oven dry of coal gangue compound feeding by water content, after drying, water content is extrude in the raw material feeding precomminution of 2%, form material cake, after high-effective classifying selects powder to be broken up by material cake, select the fine powder of specific surface area more than 300 square meters per kilogram again and supply grinding and particle shaping after collection, obtaining bottom slag-coal gangue composite micro-powder that specific surface area is 450 square meters per kilogram;
When producing cement, it is the online oven dry of starting material feeding of 4% by the water content be made up of cement clinker, gypsum, flyash, bottom slag, coal gangue, after drying, the raw material of moisture content 0.9% is sent in precomminution and is extruded, form material cake, after high-effective classifying selects powder to be broken up by material cake, select the fine powder of specific surface area more than 285 square meters per kilogram again and supply grinding and particle shaping after collection, obtaining the cement that specific surface area is 405 square meters per kilogram.
Embodiment 4, D company produce slag-mine tailing composite micro-powder and cement.
When producing slag-mine tailing composite micro-powder, be the slag of 14%, the online oven dry of mine tailing compound feeding by water content, after drying, water content is extrude in the raw material feeding precomminution of 1%, form material cake, after high-effective classifying selects powder to be broken up by material cake, select the fine powder of specific surface area more than 290 square meters per kilogram again and supply grinding and particle shaping after collection, select particle steel and Iron concentrate, obtain slag-mine tailing composite micro-powder that specific surface area is 450 square meters per kilogram;
When producing cement, it is the online oven dry of starting material feeding of 5% by the water content be made up of cement clinker, gypsum, slag, mine tailing, Wingdale, after drying, the raw material of moisture content 1% is sent in precomminution and is extruded, form material cake, after high-effective classifying selects powder to be broken up by material cake, select the fine powder of specific surface area more than 305 square meters per kilogram again and supply grinding and particle shaping after collection, obtaining the cement that specific surface area is 410 square meters per kilogram.
Embodiment 5, E company produce Fe alloy slag micro mist and cement.
When producing Fe alloy slag micro mist, it is the online oven dry of wet Fe alloy slag feeding of 22% by water content, after drying, water content is extrude in the raw material feeding precomminution of 1.5%, form material cake, after high-effective classifying selects powder to be broken up by material cake, select the fine powder of specific surface area more than 320 square meters per kilogram again and supply grinding and particle shaping after collection, select particle steel and Iron concentrate, obtain the Fe alloy slag micro mist that specific surface area is 420 square meters per kilogram;
When producing cement, it is the online oven dry of starting material feeding of 7% by the water content be made up of cement clinker, gypsum, flyash, nickel-chromium-iron alloy slag, after drying, the raw material of moisture content 0.4% is sent in precomminution and is extruded, form material cake, after high-effective classifying selects powder to be broken up by material cake, select the fine powder of specific surface area more than 290 square meters per kilogram again and supply grinding and particle shaping after collection, obtaining the cement that specific surface area is 395 square meters per kilogram.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (1)
1. a method for green ecological industrial solid castoff and the integrated grinding of cement general character, is characterized in that, comprise the following steps:
Step 1, precisely prepare burden according to predetermined ratio to the starting material left in material storage yard and bank, starting material are cement raw material or industrial solid castoff;
Step 2, step 1 is prepared burden after treating material by disperse materials curtain and hot air convection heat exchange, process 0 ~ 25% water content treating material to water content below 2%;
Step 3, step 2 is processed after express material become material cake, make the material particles surface in cake spread all over tiny crack;
Step 4, step 3 is processed after material cake break up after select the micro mist of specific surface area more than 280 square meters per kilogram and supply subsequent step, and the particle steel selected in starting material and Iron concentrate after collecting;
Step 5, micro mist step 4 obtained by ball mill grind to form the finished cement of specific surface area more than 380 square meters per kilogram or the industrial solid castoff micro mist of specific surface area more than 400 square meters per kilogram;
Step 6, to the product trapping of step 5 and classified storage.
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| CN105130492A (en) * | 2015-08-18 | 2015-12-09 | 武汉天沭除尘设备有限公司 | Nickel slag aerated concrete and preparation method thereof |
| CN107188439A (en) * | 2017-07-25 | 2017-09-22 | 广西云燕特种水泥建材有限公司 | Utilize the method and apparatus for cooling down clinker tail gas drying miberal powder |
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| CN102557493A (en) * | 2011-11-21 | 2012-07-11 | 武汉市天沭科技发展有限公司 | High-efficiency and energy-saving preparation method of slag micro-powder |
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