CN103848581A - Cement clinker and preparation method thereof - Google Patents

Cement clinker and preparation method thereof Download PDF

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Publication number
CN103848581A
CN103848581A CN201210519127.5A CN201210519127A CN103848581A CN 103848581 A CN103848581 A CN 103848581A CN 201210519127 A CN201210519127 A CN 201210519127A CN 103848581 A CN103848581 A CN 103848581A
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CN
China
Prior art keywords
raw
cement clinker
cement
limestone
waste concrete
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Pending
Application number
CN201210519127.5A
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Chinese (zh)
Inventor
王凤英
Original Assignee
王凤英
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Application filed by 王凤英 filed Critical 王凤英
Priority to CN201210519127.5A priority Critical patent/CN103848581A/en
Publication of CN103848581A publication Critical patent/CN103848581A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/10Production of cement, e.g. improving or optimising the production methods; Cement grinding

Abstract

The invention relates to a cement clinker. The cement clinker is prepared from the following required raw material components by mass percent: 30% to 67% of waste concrete, 5% to 10% of aluminum oxide, 5% to 10% of ferric oxide, 10% to 20% of limestone, 5% to 15% of sandstone, 5% to 10% of clay and 3% to 5% of sulfuric-acid residue. A method for preparing the cement clinker comprises the following steps: smashing the waste concrete taken as a raw material and screening granules with the granule diameter of 25mm to 45mm; smashing the other raw materials and evenly mixing with the waste concrete granules so as to be grinded into raw cement powder with the granule diameter less than 2mm; and adding water into the raw cement powder, calcining and cooling, thereby obtaining the cement clinker. The cement prepared from the cement clinker produced by using the method is high in strength and convenient for the resource utilization of the waste concrete, can be used for reducing the adding amount of high-quality limestone and is obvious in coal-saving and electricity-saving effects, thereby having obvious social and economic benefits. Thus, the natural environment is protected; the environmental pollution is reduced; and the recycling of resources is realized.

Description

A kind of cement clinker and preparation method
Technical field
The invention belongs to building material field, resource circulation utilization field, be specifically related to a kind of cement clinker and preparation method.
Background technology
At present, the quantity of China's building waste has accounted for 30%~40% of municipal wastes total amount.Along with the development of national economy and construction industry, the discarded concrete enormous amount producing because removing old building every year, the building waste producing has become a large refuse pollution source in city, overwhelming majority building waste is without any processing, just transported to countryside or rural area by unit in charge of construction, adopt the mode of air storage or landfill to process, consume a large amount of pork barrels such as land acquisition expense, refuse collection, meanwhile, cause the severe contamination to environment and the huge waste to the energy.
Discarded concrete is a kind of concrete having hardened, mainly formed by hydrated cement paste (Behavior of Hardened Cement Paste), Aggregate etc., they are " having misplaced local resource " in fact, as the art breading through suitable, can turn waste into wealth, become industrial raw material or the energy, adapt to the needs of China's urbanization and urban infrastructure, meet every policy of country.
Summary of the invention
The present invention in order to solve the problem of discarded concrete contaminate environment, waste resource, proposes a kind of cement clinker and preparation method, to reach the object of conservation of nature environment, Resource Recycling Utilization just.
Technical scheme of the present invention:
A kind of cement clinker, the mass percent scope of preparing desired raw material composition is as follows: discarded concrete 30%~67%, aluminum oxide 5%~10%, ferric oxide 5%~10%, limestone 10%~20%, sandstone 5%~15%, clay 5%~10%, sulfate slag 3%~5%.
A method of preparing this cement clinker, step is as follows: lay in enough discarded concretes as raw material, its main component is limestone; Smash discarded concrete raw material, sift out the particle that particle diameter is 25~45mm; Other raw materials (sulfate slag of limestone, sandstone, clay, aluminum oxide, ferric oxide, oven dry) are smashed, mixed with discarded concrete uniform particles, grind to form the cement slurry powder that particle diameter is less than 2mm; Cement slurry powder, through conventional adding water, calcining, cooling method for manufacturing, is cement clinker.
Beneficial effect of the present invention:
1. the strength of cement that prepared by this cement clinker is high, can be used as the concrete gelling material of preparation and uses, and ratio and the utilization ratio of discarded crushed stone concrete in cement clinker raw material is all very high, is convenient to the recycling of discarded concrete;
2. can reduce the consumption of fat lime stone, be beneficial to the area that limestone resource is deficienter and use;
As long as 3. set up batching metering, and do not change other techniques of existing Vertical Kiln for Cement Production;
4. the effect of economizing on coal, economizing on electricity is remarkable, has significant society and economic benefit;
5. conservation of nature environment, reduces environmental pollution, Resource Recycling Utilization;
Embodiment
A kind of cement clinker, the mass percent scope of preparing desired raw material composition is as follows: discarded concrete 30%~67%, limestone 10%~20%, sandstone 5%~15%, clay 5%~10%, aluminum oxide 5%~10%, ferric oxide 5%~10%, sulfate slag 3%~5%.
A method of preparing this cement clinker, step is as follows: lay in enough discarded concretes as raw material, its main component is limestone; Smash discarded concrete raw material, sift out the particle that particle diameter is 25~45mm; Other raw materials (sulfate slag of limestone, sandstone, clay, aluminum oxide, ferric oxide, oven dry) are smashed, mixed with discarded concrete uniform particles, grind to form the cement slurry powder that particle diameter is less than 2mm; Cement slurry powder, through conventional adding water, calcining, cooling method for manufacturing, is cement clinker.
Below in conjunction with specific embodiment, the invention will be further described.
embodiment 1
A kind of cement clinker, the mass percent scope of preparing desired raw material composition is as follows: discarded concrete 67%, limestone 10%, sandstone 5%, clay 5%, aluminum oxide 5%, ferric oxide 5%, sulfate slag 3%.
A method of preparing this cement clinker, step is as follows: lay in enough discarded concretes as raw material, its main component is limestone; Smash discarded concrete raw material, sift out the particle that particle diameter is 25~45mm; Other raw materials (sulfate slag of limestone, sandstone, clay, aluminum oxide, ferric oxide, oven dry) are smashed, mixed with discarded concrete uniform particles, grind to form the cement slurry powder that particle diameter is less than 2mm; Cement slurry powder, through conventional adding water, calcining, cooling method for manufacturing, is cement clinker.
embodiment 2
A kind of cement clinker, the mass percent scope of preparing desired raw material composition is as follows: discarded concrete 45%, limestone 10%, sandstone 5%, clay 10%, aluminum oxide 5%, ferric oxide 10%, sulfate slag 5%.
A method of preparing this cement clinker, step is as follows: lay in enough discarded concretes as raw material, its main component is limestone; Smash discarded concrete raw material, sift out the particle that particle diameter is 25~45mm; Other raw materials (sulfate slag of limestone, sandstone, clay, aluminum oxide, ferric oxide, oven dry) are smashed, mixed with discarded concrete uniform particles, grind to form the cement slurry powder that particle diameter is less than 2mm; Cement slurry powder, through conventional adding water, calcining, cooling method for manufacturing, is cement clinker.
embodiment 3
A kind of cement clinker, the mass percent scope of preparing desired raw material composition is as follows: discarded concrete 30%, limestone 20%, sandstone 15%, clay 10%, aluminum oxide 10%, ferric oxide 10%, sulfate slag 5%.
A method of preparing this cement clinker, step is as follows: lay in enough discarded concretes as raw material, its main component is limestone; Smash discarded concrete raw material, sift out the particle that particle diameter is 25~45mm; Other raw materials (sulfate slag of limestone, sandstone, clay, aluminum oxide, ferric oxide, oven dry) are smashed, mixed with discarded concrete uniform particles, grind to form the cement slurry powder that particle diameter is less than 2mm; Cement slurry powder, through conventional adding water, calcining, cooling method for manufacturing, is cement clinker.
 
Above-described embodiment is only used for further illustrating the present invention; but the present invention is not limited to embodiment; any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all fall in the protection domain of technical solution of the present invention.

Claims (2)

1. a cement clinker, is characterized in that, the mass percent scope of preparing desired raw material composition is as follows: discarded concrete 30%~67%, aluminum oxide 5%~10%, ferric oxide 5%~10%, limestone 10%~20%, sandstone 5%~15%, clay 5%~10%, sulfate slag 3%~5%.
2. prepare a method for cement clinker as claimed in claim 1, it is characterized in that, step is as follows: lay in enough discarded concretes as raw material, its main component is limestone; Smash discarded concrete raw material, sift out the particle that particle diameter is 25~45mm; The sulfate slag that is limestone, sandstone, clay, aluminum oxide, ferric oxide, oven dry other raw materials is smashed, and mixes with discarded concrete uniform particles, grinds to form the cement slurry powder that particle diameter is less than 2mm; Cement slurry powder, through conventional adding water, calcining, cooling method for manufacturing, is cement clinker.
CN201210519127.5A 2012-12-07 2012-12-07 Cement clinker and preparation method thereof Pending CN103848581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210519127.5A CN103848581A (en) 2012-12-07 2012-12-07 Cement clinker and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210519127.5A CN103848581A (en) 2012-12-07 2012-12-07 Cement clinker and preparation method thereof

Publications (1)

Publication Number Publication Date
CN103848581A true CN103848581A (en) 2014-06-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210519127.5A Pending CN103848581A (en) 2012-12-07 2012-12-07 Cement clinker and preparation method thereof

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CN (1) CN103848581A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105130221A (en) * 2015-07-09 2015-12-09 湖南省小尹无忌环境能源科技开发有限公司 Method for comprehensively utilizing waste concrete and sludge to produce ecologic clinker
CN106186746A (en) * 2016-06-30 2016-12-07 浙江新业管桩有限公司 A kind of method utilizing printing and dyeing sludge to prepare clinker
CN108328949A (en) * 2018-01-22 2018-07-27 江西亚东水泥有限公司 A kind of cement clinker production
CN112108218A (en) * 2020-09-04 2020-12-22 赵景柱 Cement clinker and processing technology thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105130221A (en) * 2015-07-09 2015-12-09 湖南省小尹无忌环境能源科技开发有限公司 Method for comprehensively utilizing waste concrete and sludge to produce ecologic clinker
CN106186746A (en) * 2016-06-30 2016-12-07 浙江新业管桩有限公司 A kind of method utilizing printing and dyeing sludge to prepare clinker
CN108328949A (en) * 2018-01-22 2018-07-27 江西亚东水泥有限公司 A kind of cement clinker production
CN112108218A (en) * 2020-09-04 2020-12-22 赵景柱 Cement clinker and processing technology thereof

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WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20140611

C02 Deemed withdrawal of patent application after publication (patent law 2001)