Mfg. of ecological building agglutinating material by using carbide slag

A technology for ecological construction and cementitious materials, applied in the field of cement, can solve the problems of rising cost, treatment failure and high water content

Inactive Publication Date: 2004-06-09
章亮庄
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the treatment method, since the main component of calcium carbide slag is CaO, it can be used as a raw material for making cement. However, when using calcium carbide slag ...

Method used

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  • Mfg. of ecological building agglutinating material by using carbide slag
  • Mfg. of ecological building agglutinating material by using carbide slag
  • Mfg. of ecological building agglutinating material by using carbide slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] The calcium carbide slag slurry with a water content of 90% is dehydrated by sedimentation, mechanical dehydration, and dried in an environment of 70 ° C. After drying, 65 kg of calcium carbide slag powder is mixed with fly ash (dry ash discharge from the flue) or slag (slagging from the bottom of the furnace) 33Kg is mixed with 2Kg of admixture (silicon powder), the mixing ratio should depend on CaO and SiO 2 Depending on the activity and proportion in the respective materials, after grinding and sieving (using a sieve with a sieve hole of 0.8mm), the undersieve is ground and sieved again to form the ecological building cement.

[0010] Components of this example:

[0011] 65Kg calcium carbide slag powder contains 68% CaO (44.2Kg), SiO 2 3% (1.95Kg), other 29% (18.85Kg);

[0012] 33Kg fly ash containing 4% CaO (1.32Kg), SiO 2 51% (16.83Kg), other 45% (14.85Kg);

[0013] 2Kg admixture silicon powder SiO 2 100% (2Kg);

[0014] That is, in 100Kg of raw materials, ...

Embodiment 2

[0017] Carbide slag slurry with a water content of 90% is subjected to sedimentation dehydration, mechanical dehydration, and drying at 90°C. After drying, 56Kg of calcium carbide slag powder, 35Kg of fly ash and 9Kg of admixture (silicon powder) are respectively ground and sieved. After sieving (using a sieve with a sieve size of 0.8mm), the undersieve is ground, sieved and mixed. The mixing ratio should be based on CaO, SiO 2 Depending on the activity and proportion in the respective materials, it becomes the ecological building cement.

[0018] Components of this example:

[0019] 56Kg calcium carbide slag powder contains 71% CaO (39.76Kg), SiO 2 3.21% (1.7976Kg), other 25.79% (14.4424Kg);

[0020] 35Kg fly ash contains 3.9% CaO (1.365Kg), SiO 2 49% (17.15Kg), other 47.1% (16.485Kg);

[0021] 6Kg admixture gypsum powder CaO 100% (6Kg);

[0022] 3Kg silicon powder SiO 2 100% (3Kg);

[0023] That is, in 100Kg of raw materials, the content of CaO is 47.125Kg, SiO 2 2...

Embodiment 3

[0025] The calcium carbide slag slurry with a water content of 90% is dehydrated by sedimentation, mechanical dehydration, and dried in an environment of 120°C. After drying, 60Kg of calcium carbide slag powder is mixed with 34Kg of fly ash and 6Kg of admixture (gypsum powder). After grinding, After sieving (using a sieve with a sieve hole of 0.8 mm), the undersieve is ground and sieved to become the ecological building cement.

[0026] Components of this example:

[0027] 60Kg calcium carbide slag powder containing 60% CaO (36Kg), SiO 2 4% (2.4Kg), other 36% (21.6Kg);

[0028] 34Kg fly ash contains 3.8% CaO (1.292Kg), SiO 2 52% (17.68Kg) other 44.2% (15.028Kg);

[0029] 6Kg admixture gypsum powder CaO 100% (6Kg);

[0030] That is, in 100Kg of raw materials, the content of CaO is 43.929Kg, SiO 2 20.08Kg, others 36.028Kg.

[0031] The product of the present invention has the advantages of soft appearance, fine touch, high late strength and good internal quality, and the...

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PUM

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Abstract

The present invention relates to a cement, in the concrete it is an environment-protecting cement which utilizes the carbide slag to make ecological building cementing material. Its production process includes the following steps: using carbide slag slurry whose water content is 90%, sedimentation to make dehydration, mechanical dehydration, drying, mixing with flyash and additive, grinding, sieving, grinding material under the sieve and sieving so as to obtain the invented ecological building cementing material. Its formula includes (by wt%) CaO 40-72, SiO2 20-51, additive 1-8 and other component 1-37.

Description

technical field [0001] The invention relates to cement, in particular to environment-friendly masonry cement that utilizes calcium carbide slag to manufacture ecological building cementing materials. Background technique [0002] At present, chemical plants using acetylene as raw material are producing calcium carbide-calcium carbide (CaC 2 ) process, discharge calcium carbide slag containing a large amount of water (the main components are: CaO containing 65-72%, Al 2 o 3 Contains 3%, SiO 2 Containing 3% and other substances, etc.), a medium-sized manufacturer discharges about 80,000 to 100,000 tons of carbide slag every year, and there are more than 20 medium-sized and above manufacturers in the country, which discharge millions of tons every year, and are still mainly stacked in the open air. The open-air stacking of waste slag not only takes up a lot of land, but more seriously, after being washed by rainwater, a large amount of alkaline wastewater not only pollutes s...

Claims

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Application Information

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IPC IPC(8): C04B18/04C04B18/08C04B28/14
CPCY02W30/91
Inventor 章亮庄刘波李同昌袁跃周国垣曹岩
Owner 章亮庄
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