CN102765891B - Sulphoaluminate cement and production method thereof - Google Patents
Sulphoaluminate cement and production method thereof Download PDFInfo
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- CN102765891B CN102765891B CN201210220754.9A CN201210220754A CN102765891B CN 102765891 B CN102765891 B CN 102765891B CN 201210220754 A CN201210220754 A CN 201210220754A CN 102765891 B CN102765891 B CN 102765891B
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Abstract
The invention discloses sulphoaluminate cement and a production method thereof. The production method includes mixing and homogenizing cement clinker which is a raw material, desulfurized gypsum and cobblestones; and repeatedly grinding the mixture to obtain the sulphoaluminate cement. The waste desulfurized replaces anhydrite in the prior art to produce the sulphoaluminate cement, waste resources are changed into renewable resources, production cost of the cement is lowered, resource consumption and environmental pollution are reduced, economical benefit is increased, and the sulphoaluminate cement is simple in process and quick and convenient to produce. The production method is applicable to producing the sulphoaluminate cement.
Description
Technical field
The invention belongs to field of cement production, relate to a kind of aluminosulfate cement and production method thereof, a kind of aluminosulfate cement and the production method thereof of specifically utilizing desulfurated plaster to produce.
Background technology
Aluminosulfate cement is a new cement series, be known as Tr row cement, have that early strength is high, time of coagulation is short, the feature of high permeability resistant, high frost resistance, rotproofness and low alkalinity, be widely used in winter construction, speedily carry out rescue work in the special engineerings such as repairing, impervious leak stopping.
In existing aluminosulfate cement production technology, raw materials used cement clinker, Wingdale, the anhydrite etc. of comprising.Because the Wingdale of anhydrite and high-quality belongs to Nonrenewable resources, make the cost and price of aluminosulfate cement all very high.
Desulfurated plaster is the secondary solid industrial residue that coal burning flue gas desulfurization produces, and belongs to trade waste.Along with applying of power plant desulfurization technology, the disposal of desulfurated plaster with utilize problem to arise at the historic moment.At present, a large amount of desulfurated plasters only has small part to obtain elementary utilization, and the overwhelming majority is directly abandoned, and not only polluted air but also land occupation have become the significant problem of China environmental protection.
Summary of the invention
Object of the present invention, be to provide a kind of aluminosulfate cement and production method thereof, utilize desulfurated plaster to replace prior art anhydrite used, prepare burden and produce aluminosulfate cement with cement clinker, handstone, to reduce cement cost, reduce resource consumption and environmental pollution, increase economic efficiency.
For achieving the above object, the technical solution adopted in the present invention is:
An aluminosulfate cement, makes the raw material of its effective constituent, in parts by weight, comprising:
Cement clinker 70-75 part,
15-20 parts of desulfurated plasters,
8-12 parts of handstones;
Meanwhile, in the mixture of above-mentioned several raw materials, the content of sulphur trioxide is controlled at 13.3-13.7%.
As to optimization of the present invention, the parts by weight relation of described raw material is as follows:
73 parts of cement clinkers,
17 parts of desulfurated plasters,
10 parts of handstones;
Meanwhile, in the mixture of above-mentioned several raw materials, the content of sulphur trioxide is controlled at 13.5.
The present invention also provides the production method of above-mentioned cement, and its cement clinker comprises gypsum, bauxitic clay, Wingdale, makes, wherein 1200-1300 ℃ of calcining temperatures, calcination time 30-50min after pulverizing, grinding, calcining; Then in cement clinker, add desulfurated plaster, handstone, after homogenizing, through grinding repeatedly, make aluminosulfate cement.
Owing to having adopted technique scheme, compared with prior art, obtained technical progress is in the present invention:
With discarded desulfurated plaster, produce aluminosulfate cement, change waste resource into renewable resources, reduced the production cost of cement, reduced environmental pollution, increased economic benefit, and the stay in grade of desulfurated plaster, sulfur trioxide content is low.Desulfurated plaster in the present invention, handstone, cement clinker be through grinding repeatedly, guaranteed that three kinds of batchings fully mix homogenizing, and its technique is simple, it is efficient and convenient to produce.
The present invention is applicable to the production of aluminosulfate cement.
Accompanying drawing explanation
The present invention is below described further in connection with Figure of description and specific embodiment.
Figure 1 shows that the process flow sheet of the embodiment of the present invention.
Embodiment
embodiment 1-5
Embodiment 1-5 is respectively a kind of aluminosulfate cement and preparation method thereof, make the raw material of effective constituent of the aluminosulfate cement of each embodiment, and the performance of obtained aluminosulfate cement is as shown in the table:
The preparation method of the aluminosulfate cement of embodiment 1-5, carries out according to following steps order respectively:
1, gypsum, bauxitic clay, Wingdale are pulverized to laggard row and mixed, the mixture of gained is carried out to grinding, homogenizing calcining, 1200-1300 ℃ of calcining temperatures, calcination time 30-50min; After calcining, make cement clinker;
2, in cement clinker, add desulfurated plaster, handstone, after three kinds of batching combination homogenizing, through grinding, make aluminosulfate cement.
Above-mentioned preparation method utilizes dry-process rotory kiln production line to realize, Fig. 1 is shown in its technical process, concrete operations are as follows: cement clinker, handstone and desulfurated plaster after Microcomputerized dosing in φ 3.8 * 12m grinding machine grinding, by mill tail, drawn off, through weight tilting plate lock air-valve, skewed slot, chapelet, skewed slot enters high-efficient powder concentrator, qualified finished cement enters high density plenum pulse cloth bag collector and collects, by chain conveyor and revolving plow reclaimer, drawn off again, enter skewed slot, lift arrives cement bin, after high-efficient powder concentrator, a small amount of underproof cement macrobead is through skewed slot, impact flow meter is got back to cement grinding mill bistrique and the rear mixing of materials of batching again grinding.The dusty gas of mill inner ventilation extracts and enters mill separator from mill tail, and oarse-grained cement is got back to bistrique and continued grinding, and cement fine powder enters in high density plenum pulse cloth bag collector and collects, and enters skewed slot, lift arrival cement bin.
The present invention has also made simultaneous test, and with desulfurated plaster prepared aluminosulfate cement, as test group, with the prepared aluminosulfate cement of anhydrite as a control group, concrete outcome is as following table:
As seen from the above table, by the ultimate compression strength of the prepared aluminosulfate cement of desulfurated plaster, be 44-48Mpa, presetting period 16-20min, final setting time 30-33min, by the ultimate compression strength of the prepared aluminosulfate cement of anhydrite, be 44-48Mpa, presetting period 16-19min, final setting time 28-35min, two groups of Data Comparisons can be found out the aluminosulfate cement that replaces former useful anhydrite to make with desulfurated plaster, performance perameter is basic identical, illustrates that thus the aluminosulfate cement making with desulfurated plaster meets the requirement of ultimate compression strength and condensation time.
Applicant has worked out company standard to the performance index of aluminosulfate cement of the present invention (L.SAC32.5 and R.SAC42.5 product adopt desulfurated plaster to produce), contrasts with adopting the national standard of the like product of anhydrite, as shown in the table:
Claims (2)
1. an aluminosulfate cement, is characterized in that making the raw material of its effective constituent, in parts by weight, comprising:
Cement clinker 70-75 part, 15-20 parts of desulfurated plasters, 8-12 parts of handstones; Meanwhile, in the mixture of above-mentioned several raw materials, the content of sulphur trioxide is controlled at 13.3-13.7%; Wherein:
The per-cent composition of desulfurated plaster comprises silicon-dioxide 3.08, aluminum oxide 0.25, ferric oxide 0.27, calcium oxide 32.18, magnesium oxide 1.74, sulphur trioxide 39.35, loss on ignition 22.33;
Cement clinker comprises anhydrite, bauxitic clay, Wingdale, after pulverizing, grinding, calcining, makes, and wherein calcining temperature is 1200-1300 ℃, calcination time 30-50min; Then, in cement clinker, add desulfurated plaster, handstone, after homogenizing, through grinding, make aluminosulfate cement.
2. a kind of aluminosulfate cement according to claim 1, is characterized in that the parts by weight of described raw material are as follows respectively:
73 parts of cement clinkers, 17 parts of desulfurated plasters, 10 parts of handstones; Meanwhile, in the mixture of above-mentioned several raw materials, the content of sulphur trioxide is controlled at 13.5%.
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| CN201210220754.9A CN102765891B (en) | 2012-06-29 | 2012-06-29 | Sulphoaluminate cement and production method thereof |
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| CN201210220754.9A CN102765891B (en) | 2012-06-29 | 2012-06-29 | Sulphoaluminate cement and production method thereof |
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| CN102765891A CN102765891A (en) | 2012-11-07 |
| CN102765891B true CN102765891B (en) | 2014-03-12 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103664014B (en) * | 2013-12-19 | 2016-03-30 | 中国中材国际工程股份有限公司 | White aluminosulfate cement and preparation method thereof |
| CN105669058B (en) * | 2014-11-18 | 2017-11-10 | 登封电厂集团有限公司 | A kind of method that sulphate aluminium cement is produced with aluminium section bar sludge |
| CN107827419A (en) * | 2017-11-24 | 2018-03-23 | 广州市公路勘察设计有限公司 | Early strong retarded concrete of low alkalinity and preparation method thereof |
| CN111875271A (en) * | 2020-07-23 | 2020-11-03 | 尧柏特种水泥技术研发有限公司 | High-alite sulphoaluminate cement clinker and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1432543A (en) * | 2003-02-20 | 2003-07-30 | 陈智丰 | Sulphoaluminate cement producing process with industrial waste |
| CN101348334A (en) * | 2008-09-08 | 2009-01-21 | 上海绿特丹保温工程有限公司 | High-purity cement, preparation and use thereof |
| CN102485687A (en) * | 2010-12-02 | 2012-06-06 | 上海绿特丹保温工程有限公司 | Two-component packaged cement |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1432543A (en) * | 2003-02-20 | 2003-07-30 | 陈智丰 | Sulphoaluminate cement producing process with industrial waste |
| CN101348334A (en) * | 2008-09-08 | 2009-01-21 | 上海绿特丹保温工程有限公司 | High-purity cement, preparation and use thereof |
| CN102485687A (en) * | 2010-12-02 | 2012-06-06 | 上海绿特丹保温工程有限公司 | Two-component packaged cement |
Non-Patent Citations (2)
| Title |
|---|
| 张丕兴 等.用于硫铝酸盐水泥混合材的试验研究.《水泥工程》.2011,(第1期),第2-5和31页. |
| 用于硫铝酸盐水泥混合材的试验研究;张丕兴 等;《水泥工程》;20111231(第1期);第2-5和31页 * |
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