CN103641426A - High strength phosphogypsum brick and manufacturing method thereof - Google Patents
High strength phosphogypsum brick and manufacturing method thereof Download PDFInfo
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- CN103641426A CN103641426A CN201310533678.1A CN201310533678A CN103641426A CN 103641426 A CN103641426 A CN 103641426A CN 201310533678 A CN201310533678 A CN 201310533678A CN 103641426 A CN103641426 A CN 103641426A
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a high strength phosphogypsum brick and manufacturing method thereof, and the product is made of phosphogypsum, yellow phosphorus slag, quicklime and fine aggregate; the manufacturing method comprises the following steps: mixing and grinding dry yellow phosphorus slag and quicklime; uniformly metering and mixing the mixedly grinded materials and phosphogypsum and fine aggregate; adding water into the mixed materials and stirring uniformly, controlling the water content content at 10%; manufacturing brick blanks by a hydraulic vibration forming machine; obtaining the finished product with saturated vapor at 1.35MPa. Compared with the prior art, the product is better than common high strength phosphogypsum brick, and the high strength phosphogypsum brick manufactured by the invention has the advantages of high intensity, good water resistance and good endurance; the compressive strength is between 30 and 45 MPa, and the flexural intensity is between 6.5 and 12.0 MPa, and the softening coefficient is between 0.85-0.95, and the carbonization coefficient is larger than 0.90, and the water absorption is less than 20%.
Description
Technical field
The present invention relates to building material field, relate in particular to a kind of high strength ardealite brick and preparation method thereof.
Background technology
At present, domestic phosphorous chemical industry enterprise has produced a large amount of phosphogypsums in Wet-process Phosphoric Acid Production process, and environment has been caused to detrimentally affect.According to incompletely statistics, more than the every annual emissions of the phosphogypsum slag of China has reached 4,000 ten thousand t, and utilization ratio is only 4.1%-4.5%.How effectively to process phosphogypsum slag and become the difficult problem that phosphorous chemical industry enterprise faces.
Yellow Phosphorous Slag be in phosphorus production process by phosphatic rock, quartz, coke in electric arc furnace, with 1600 ℃ of left and right high melts, there is following reaction and the waste residue of discharging.At present, domestic every production 1t yellow phosphorus will produce 8～10t yellow phosphorus furnace slag.Due to discharging without controlling of yellow phosphorus furnace slag, very easily the atmosphere of periphery, water, soil and ecotope are caused to expendable pollution.And it is domestic very low to the effective rate of utilization of yellow phosphorus furnace slag.
Highway engineering and public works are higher to quality requirements such as the intensity of brick and weather resistance.In the prior art, conventional take the concrete brick that cement is main raw material, because consumption is large, and higher to requirement of strength, so its production cost is higher.And the ultimate compression strength of ardealite brick of the prior art is conventionally in about 10～20MPa, be no more than at most 30MPa, and the folding strength the highest 6.0MPa that can only reach is conventionally only limited to building wall to use, and can not meet the needs of highway engineering and public works.The purposes scope that this means ardealite brick is narrower, and utilization is little, and the treatment capacity of ardealite brick is reduced, and is unfavorable for ecotope.
A kind of phosphogypsum high-strength wall brick as disclosed in CN1935736B and production method thereof, by half water phosphogypsum 70-85: anhydrous phosphogypsum 12-20: flyash 15-20: condensing agent (silica aqueous solution of 12-20%) 15-25, even with spray mode mix, through machinery dress mould high-pressure molding, mechanical stripping, completes and makes after natural aquation.The deficiency of this technical scheme is, due to raw material form in phosphogypsum large percentage, cause the ardealite wall brick weather resistance made not high, easily there is the phenomenon of metope cracking; And its intensity cannot meet the actual use needs of highway engineering and public works.
And for example CN1259272C discloses a kind of high-strength phosphogypoum building block and preparation method thereof, feed composition is 20～40 parts of phosphogypsums, 5～20 parts of non-activated compound agents, 5～10 parts of promotor, 5～16 parts, water, described non-activated compound agent is sand, slag, titanium slag, phosphorus slag, flyash, silica flour and/or diatomite, and described promotor is calcium oxide, sodium sulfate, sodium oxide, potassium sulfate and/or Repone K; In raw material, also contain activated compound agent (cement, polyacrylamide resin, coumarone resin and/or polyvinyl alcohol); Its method for making is to carry out digestion reaction after each raw material and the water of half are uniformly mixed, and adds excess water to be uniformly mixed after slaking, is then placed in the compression moulding of block forming press, then carries out maintenance with steam, last standing drying.The weak point of this technical scheme is, composition is too complicated, unstable product quality and wayward; Want to obtain higher intensity and must use activated compound agent, the consequences such as quality is unstable, influence factor increases, cost increase that this will cause.
For another example disclosed a kind of high-strength waterproof gypsum brick of CN100475736C and preparation method thereof, with 40～90 parts of dihydrate gypsums, 10～60 parts of hydraulic cementing materials, 1～10 part of exciting agent, through batching, levigate, sieve, mixing, water mixing, stirring, vibration compacting or extrusion molding, vapor cure is made; The preferred yellow phosphorus furnace slag of hydraulic glue gel material wherein, the preferred lime of exciting agent; Method for making is that dihydrate gypsum is pulverized, and hydraulic glue gel material and exciting agent is levigate, adds water and stirs, and through vibration or extrusion process moulding, then after hydrothermal curing, obtains finished product.The weak point of this technical scheme is, the large usage quantity of dihydrate gypsum causes the weather resistance of finished bricks poor, and consumption minimizing will cause again intensity not high, and the phenomenon of cracking may appear in life-time service, is unsuitable for highway engineering and public works and uses.
Summary of the invention
The object of the present invention is to provide a kind of making method of high strength ardealite brick, solved in prior art ardealite brick restricted because of intensity, weather resistance etc., be unsuitable for the problem that highway engineering and public works are used.
A high strength ardealite brick, is made by phosphogypsum, yellow phosphorus furnace slag, unslaked lime, fine aggregate, and the parts by weight of described raw material are:
20 parts～50 parts of phosphogypsums;
40 parts～65 parts of yellow phosphorus furnace slags;
1 part～2 parts of unslaked limes;
20 parts～40 parts of fine aggregates.
Further, the parts by weight of described raw material are:
30 parts～40 parts of phosphogypsums;
45 parts～60 parts of yellow phosphorus furnace slags;
1 part～2 parts of unslaked limes;
25 parts～35 parts of fine aggregates.
Further, the parts by weight of described raw material are:
30 parts of phosphogypsums;
50 parts of yellow phosphorus furnace slags;
2 parts of unslaked limes;
30 parts of fine aggregates.
Described yellow phosphorus furnace slag is Water Quenching Slag, and described fine aggregate refers to the sand of particle diameter≤4.75mm.
Effective CaO content >=40% of described unslaked lime.
P in described phosphogypsum
2o
5content≤3.0%, water content is 8～12%.
The making method of above-mentioned high strength ardealite brick is to be made in accordance with the following methods by phosphogypsum, yellow phosphorus furnace slag, unslaked lime, fine aggregate:
(1) dry Yellow Phosphorous Slag and unslaked lime are carried out to mixed grinding and obtain material A;
(2) phosphogypsum and material A and fine aggregate are prepared burden to obtain in proportion material B;
(3) material B is added to water and be uniformly mixed to obtain material C, control the water content of material C 10～12%;
(4) utilize hydraulic vibration molding machine that material C is made as to adobe body;
(5) by the maintenance of 1.35～1.55MPa saturation steam, make finished product ardealite brick.
The present invention compared with prior art, is better than common high strength ardealite brick, the high strength ardealite brick that adopts the present invention to produce, and intensity is high, and water tolerance is good, good endurance; Its ultimate compression strength is at 30～45MPa, and folding strength is at 6.5～12.0MPa, and coefficient of softening is 0.85～0.95, and carbonation coefficient is greater than 0.90, and water-intake rate is less than 20%.Raw material of the present invention forms compared with prior art, and species composition is comparatively simple and clear, and amount ranges is clearer and more definite, reasonable ratio, only use phosphogypsum, yellow phosphorus furnace slag, unslaked lime and fine aggregate, do not use cement as raw material, phosphogypsum consumption reduces, and the consumption of yellow phosphorus furnace slag increases, the consumption of unslaked lime is less, and has increased fine aggregate, and products made thereby quality is more stable, production process is easy to control, and has obtained unexpected high strength effect.Although reduced phosphogypsum consumption, but by raw material composition and ratio of the present invention, can bring the high strength, weather resistance and the water tolerance that are suitable for highway engineering and public works needs, in general, the present invention is conducive to effective processing of phosphogypsum slag, drives effective utilization of this waste residue of yellow phosphorus furnace slag simultaneously.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is described.The following stated is preferred embodiment of the present invention, can be used for explaining and supporting the present invention, but the present invention is not done to any pro forma restriction, any technical solution of the present invention content that do not depart from, and according to simple modification, equivalent variations and modification that technical spirit of the present invention is done following examples, all still belong in the scope of technical solution of the present invention.
Embodiment 1
By 3000 bulge test amounts, carry out raw material preparation, phosphogypsum 2000 ㎏, Yellow Phosphorous Slag 5300 ㎏, unslaked lime 150 ㎏, fine aggregate 2550 ㎏.
First dry Yellow Phosphorous Slag and unslaked lime are carried out to mixed grinding; Mix grinding material and phosphogypsum and fine aggregate being carried out to evenly metering mixes again; Again mixture is added to water and be uniformly mixed, control its water content 10%; Utilize hydraulic vibration molding machine to make adobe body; By the maintenance of 1.35MPa saturation steam, make finished product.
Detected result:
Ultimate compression strength: 45.3MPa;
Folding strength: 12.1MPa;
Coefficient of softening: 0.95;
Carbonation coefficient: 0.97;
Water-intake rate: 13%.
Embodiment 2
By 3000 bulge test amounts, carry out raw material preparation, phosphogypsum 3900 ㎏, Yellow Phosphorous Slag 4000 ㎏, unslaked lime 100 ㎏, fine aggregate 2000 ㎏.
First dry Yellow Phosphorous Slag and unslaked lime are carried out to mixed grinding; Mix grinding material and phosphogypsum and fine aggregate being carried out to evenly metering mixes again; Again mixture is added to water and be uniformly mixed, control its water content 12%; Utilize hydraulic vibration molding machine to make adobe body; By the maintenance of 1.55MPa saturation steam, make finished product.
Detected result:
Ultimate compression strength: 40.7MPa;
Folding strength: 10.9MPa;
Coefficient of softening: 0.88;
Carbonation coefficient: 0.97;
Water-intake rate: 16%.
Embodiment 3
By 3000 bulge test amounts, carry out raw material preparation, phosphogypsum 3000 ㎏, Yellow Phosphorous Slag 4000 ㎏, unslaked lime 100 ㎏, fine aggregate 2900 ㎏.
First dry Yellow Phosphorous Slag and unslaked lime are carried out to mixed grinding; Mix grinding material and phosphogypsum and fine aggregate being carried out to evenly metering mixes again; Again mixture is added to water and be uniformly mixed, control its water content 11%; Utilize hydraulic vibration molding machine to make adobe body; By the maintenance of 1.45MPa saturation steam, make finished product.
Detected result:
Ultimate compression strength: 43.3MPa;
Folding strength: 6.9MPa;
Coefficient of softening: 0.93;
Carbonation coefficient: 0.97;
Water-intake rate: 13%.
Embodiment 4
The raw material of high strength ardealite brick:
Phosphogypsum 20kg; Yellow phosphorus furnace slag 65kg; Unslaked lime 1kg; Fine aggregate 40kg.Yellow phosphorus furnace slag is Water Quenching Slag, and fine aggregate refers to the sand of particle diameter≤4.75mm.Effective CaO content >=40% of unslaked lime.P in phosphogypsum
2o
5content≤3.0%, water content is 8%.
Method for making:
(1) dry Yellow Phosphorous Slag and unslaked lime are carried out to mixed grinding and obtain material A;
(2) phosphogypsum and material A and fine aggregate are prepared burden to obtain in proportion material B;
(3) material B is added to water and be uniformly mixed to obtain material C, control the water content of material C 10%;
(4) utilize hydraulic vibration molding machine that material C is made as to adobe body;
(5) by the maintenance of 1.35MPa saturation steam, make finished product ardealite brick.
Embodiment 5
The raw material of high strength ardealite brick:
Phosphogypsum 50kg; Yellow phosphorus furnace slag 40kg; Unslaked lime 2kg; Fine aggregate 20kg.Yellow phosphorus furnace slag is Water Quenching Slag, and fine aggregate refers to the sand of particle diameter≤4.75mm.Effective CaO content >=40% of unslaked lime.P in phosphogypsum
2o
5content≤3.0%, water content is 9%.
Method for making:
(1) dry Yellow Phosphorous Slag and unslaked lime are carried out to mixed grinding and obtain material A;
(2) phosphogypsum and material A and fine aggregate are prepared burden to obtain in proportion material B;
(3) material B is added to water and be uniformly mixed to obtain material C, control the water content of material C 11%;
(4) utilize hydraulic vibration molding machine that material C is made as to adobe body;
(5) by the maintenance of 1.40MPa saturation steam, make finished product ardealite brick.
Embodiment 6
The raw material of high strength ardealite brick:
Phosphogypsum 30kg; Yellow phosphorus furnace slag 60kg; Unslaked lime 1kg; Fine aggregate 35kg.Yellow phosphorus furnace slag is Water Quenching Slag, and fine aggregate refers to the sand of particle diameter≤4.75mm.Effective CaO content >=40% of unslaked lime.P in phosphogypsum
2o
5content≤3.0%, water content is 10%.
Method for making:
(1) dry Yellow Phosphorous Slag and unslaked lime are carried out to mixed grinding and obtain material A;
(2) phosphogypsum and material A and fine aggregate are prepared burden to obtain in proportion material B;
(3) material B is added to water and be uniformly mixed to obtain material C, control the water content of material C 10%;
(4) utilize hydraulic vibration molding machine that material C is made as to adobe body;
(5) by the maintenance of 1.50MPa saturation steam, make finished product ardealite brick.
Embodiment 7
The raw material of high strength ardealite brick:
Phosphogypsum 40kg; Yellow phosphorus furnace slag 45kg; Unslaked lime 2kg; Fine aggregate 25kg.Yellow phosphorus furnace slag is Water Quenching Slag, and fine aggregate refers to the sand of particle diameter≤4.75mm.Effective CaO content >=40% of unslaked lime.P in phosphogypsum
2o
5content≤3.0%, water content is 11%.
Method for making:
(1) dry Yellow Phosphorous Slag and unslaked lime are carried out to mixed grinding and obtain material A;
(2) phosphogypsum and material A and fine aggregate are prepared burden to obtain in proportion material B;
(3) material B is added to water and be uniformly mixed to obtain material C, control the water content of material C 12%;
(4) utilize hydraulic vibration molding machine that material C is made as to adobe body;
(5) by the maintenance of 1.55MPa saturation steam, make finished product ardealite brick.
Embodiment 8
The raw material of high strength ardealite brick:
Phosphogypsum 30kg; Yellow phosphorus furnace slag 50kg; Unslaked lime 1.5kg; Fine aggregate 30kg.Yellow phosphorus furnace slag is Water Quenching Slag, and fine aggregate refers to the sand of particle diameter≤4.75mm.Effective CaO content >=40% of unslaked lime.P in phosphogypsum
2o
5content≤3.0%, water content is 12%.
Method for making:
(1) dry Yellow Phosphorous Slag and unslaked lime are carried out to mixed grinding and obtain material A;
(2) phosphogypsum and material A and fine aggregate are prepared burden to obtain in proportion material B;
(3) material B is added to water and be uniformly mixed to obtain material C, control the water content of material C 11%;
(4) utilize hydraulic vibration molding machine that material C is made as to adobe body;
(5) by the maintenance of 1.45MPa saturation steam, make finished product ardealite brick.
Embodiment 9
The raw material of high strength ardealite brick:
Phosphogypsum 30kg; Yellow phosphorus furnace slag 55kg; Unslaked lime 1kg; Fine aggregate 30kg.Yellow phosphorus furnace slag is Water Quenching Slag, and fine aggregate refers to the sand of particle diameter≤4.75mm.Effective CaO content >=40% of unslaked lime.P in phosphogypsum
2o
5content≤3.0%, water content is 12%.
Method for making:
(1) dry Yellow Phosphorous Slag and unslaked lime are carried out to mixed grinding and obtain material A;
(2) phosphogypsum and material A and fine aggregate are prepared burden to obtain in proportion material B;
(3) material B is added to water and be uniformly mixed to obtain material C, control the water content of material C 12%;
(4) utilize hydraulic vibration molding machine that material C is made as to adobe body;
(5) by the maintenance of 1.45MPa saturation steam, make finished product ardealite brick.
Embodiment 1～3 gained high strength ardealite brick of usining below carries out endurance test (carbonation coefficient test), the moisture content test, folding strength test, ultimate compression strength and water tolerance test (coefficient of softening test) as sample.
The check of ultimate compression strength, folding strength, tests by the regulation of building material industry standard JC466 " appendix A " and " Appendix B " (refilling member) respectively.The mensuration of carbonation coefficient and coefficient of softening, with reference to testing about the method for material of construction essential property test in < < common building material property check > >.The moisture content test is carried out according to the requirements such as equipment, test specimen quantity, testing sequence and result calculating of JC446 standard regulation.Detected result is as shown in table 1.
The detected result of table 1 steam pressure yellow phosphorus furnace slag of the present invention pavior brick
Claims (7)
1. a high strength ardealite brick, is characterized in that: by phosphogypsum, yellow phosphorus furnace slag, unslaked lime, fine aggregate, made, the parts by weight of described raw material are:
20 parts～50 parts of phosphogypsums;
40 parts～65 parts of yellow phosphorus furnace slags;
1 part～2 parts of unslaked limes;
20 parts～40 parts of fine aggregates.
2. a kind of high strength ardealite brick according to claim 1, is characterized in that: the parts by weight of described raw material are:
30 parts～40 parts of phosphogypsums;
45 parts～60 parts of yellow phosphorus furnace slags;
1 part～2 parts of unslaked limes;
25 parts～35 parts of fine aggregates.
3. a kind of high strength ardealite brick according to claim 1, is characterized in that: the parts by weight of described raw material are:
30 parts of phosphogypsums;
50 parts of yellow phosphorus furnace slags;
2 parts of unslaked limes;
30 parts of fine aggregates.
4. a kind of high strength ardealite brick according to claim 1, is characterized in that: described yellow phosphorus furnace slag is Water Quenching Slag, and described fine aggregate refers to the sand of particle diameter≤4.75mm.
5. according to the arbitrary described a kind of high strength ardealite brick of claim 1, it is characterized in that: effective CaO content >=40% of described unslaked lime.
6. according to the arbitrary described a kind of high strength ardealite brick of claim 1, it is characterized in that: the P in described phosphogypsum
2o
5content≤3.0%, water content is 8～12%.
7. according to the making method of the arbitrary described a kind of high strength ardealite brick of claim 1～6, it is characterized in that: by phosphogypsum, yellow phosphorus furnace slag, unslaked lime, fine aggregate, made in accordance with the following methods:
(1) dry Yellow Phosphorous Slag and unslaked lime are carried out to mixed grinding and obtain material A;
(2) phosphogypsum and material A and fine aggregate are prepared burden to obtain in proportion material B;
(3) material B is added to water and be uniformly mixed to obtain material C, control the water content of material C 10～12%;
(4) utilize hydraulic vibration molding machine that material C is made as to adobe body;
(5) by the maintenance of 1.35～1.55MPa saturation steam, make finished product ardealite brick.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310533678.1A CN103641426A (en) | 2013-11-01 | 2013-11-01 | High strength phosphogypsum brick and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310533678.1A CN103641426A (en) | 2013-11-01 | 2013-11-01 | High strength phosphogypsum brick and manufacturing method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104725007A (en) * | 2015-02-04 | 2015-06-24 | 贵州开磷集团股份有限公司 | Phosphogypsum-based stone-like structure building material and preparation method thereof |
| CN104725015A (en) * | 2015-02-04 | 2015-06-24 | 贵州开磷集团股份有限公司 | Ardealite substrate wood imitating wall brick and preparation method thereof |
| CN104761227A (en) * | 2015-02-04 | 2015-07-08 | 贵州开磷集团股份有限公司 | Granite-imitation wall body material and preparation method thereof |
| CN104761218A (en) * | 2015-02-04 | 2015-07-08 | 贵州开磷集团股份有限公司 | Phosphogypsum-based imitation platycladus orientalis-structured building material and preparation method thereof |
| CN104761225A (en) * | 2015-02-04 | 2015-07-08 | 贵州开磷集团股份有限公司 | Phosphogypsum base material imitation aluminum alloy and preparation method thereof |
| CN104761223A (en) * | 2015-02-04 | 2015-07-08 | 贵州开磷集团股份有限公司 | Phosphogypsum base material imitation jade board and preparation method thereof |
| CN104761221A (en) * | 2015-02-04 | 2015-07-08 | 贵州开磷集团股份有限公司 | Phosphogypsum-based imitation wood-floor-structured building material and preparation method thereof |
| CN104891919A (en) * | 2015-02-04 | 2015-09-09 | 贵州开磷集团股份有限公司 | Phosphogypsum-based imitated cedar structure building material and preparation method thereof |
| CN106431105A (en) * | 2016-08-31 | 2017-02-22 | 中北大学 | Method for preparing building material by use of industrial byproduct gypsum |
| CN107056208A (en) * | 2017-03-29 | 2017-08-18 | 合肥天沃能源科技有限公司 | One kind energy-conservation pavior brick and preparation method thereof |
| CN107399952A (en) * | 2017-07-31 | 2017-11-28 | 铜陵丰泽建材科技有限公司 | A kind of preparation method of resistance to compression fly ash autoclaved brick |
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| CN101519896A (en) * | 2009-04-08 | 2009-09-02 | 四川方大新型建材科技开发有限责任公司 | Vapor-pressing plaster brick and preparation method thereof |
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| CN104761221A (en) * | 2015-02-04 | 2015-07-08 | 贵州开磷集团股份有限公司 | Phosphogypsum-based imitation wood-floor-structured building material and preparation method thereof |
| CN104725015A (en) * | 2015-02-04 | 2015-06-24 | 贵州开磷集团股份有限公司 | Ardealite substrate wood imitating wall brick and preparation method thereof |
| CN104761227A (en) * | 2015-02-04 | 2015-07-08 | 贵州开磷集团股份有限公司 | Granite-imitation wall body material and preparation method thereof |
| CN104761218A (en) * | 2015-02-04 | 2015-07-08 | 贵州开磷集团股份有限公司 | Phosphogypsum-based imitation platycladus orientalis-structured building material and preparation method thereof |
| CN104761225A (en) * | 2015-02-04 | 2015-07-08 | 贵州开磷集团股份有限公司 | Phosphogypsum base material imitation aluminum alloy and preparation method thereof |
| CN104761223A (en) * | 2015-02-04 | 2015-07-08 | 贵州开磷集团股份有限公司 | Phosphogypsum base material imitation jade board and preparation method thereof |
| CN104725007A (en) * | 2015-02-04 | 2015-06-24 | 贵州开磷集团股份有限公司 | Phosphogypsum-based stone-like structure building material and preparation method thereof |
| CN104891919A (en) * | 2015-02-04 | 2015-09-09 | 贵州开磷集团股份有限公司 | Phosphogypsum-based imitated cedar structure building material and preparation method thereof |
| CN104761227B (en) * | 2015-02-04 | 2016-08-24 | 贵州开磷集团股份有限公司 | A kind of artificial grantie materials for wall and preparation method thereof |
| CN106431105A (en) * | 2016-08-31 | 2017-02-22 | 中北大学 | Method for preparing building material by use of industrial byproduct gypsum |
| CN106431105B (en) * | 2016-08-31 | 2019-11-05 | 中北大学 | The method for preparing construction material using industry by-product gypsum |
| CN107056208A (en) * | 2017-03-29 | 2017-08-18 | 合肥天沃能源科技有限公司 | One kind energy-conservation pavior brick and preparation method thereof |
| CN107399952A (en) * | 2017-07-31 | 2017-11-28 | 铜陵丰泽建材科技有限公司 | A kind of preparation method of resistance to compression fly ash autoclaved brick |
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Application publication date: 20140319 |