Catalytic gluing carbide slag brick

A technology of calcium carbide slag and calcium carbide, which is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of high cost and long maintenance time, and achieve the effect of low cost, smooth surface and improved utilization rate

Inactive Publication Date: 2008-05-21
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The utilization of calcium carbide slag has increased, but it requires high temperature and energy consumption to prepare its liquid binder, and it also needs to add certain organic matter and high-pressure molding. The curing time is longer or dry ice curing is required, and the cost is higher.

Method used

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  • Catalytic gluing carbide slag brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] After crushing calcium carbide slag (Zhejiang Juhua Co., Ltd.) through a 40-mesh standard sieve, weigh 2.5kg of carbide slag powder, 0.5kg of quartz sand (the particle size is required to pass through a 16-mesh standard sieve) and 1.0kg of inorganic catalyst activator (Among them, active SiO2: 60 parts, active TiO2: 22.69 parts, active Al2O3: 13 parts, Na2SiO3: 3 parts, Fe: 0.5 parts, CuSO4: 0.6 parts, Na2CO3: 0.1 parts, Na2SiF6: 0.1 parts and CeO2: 0.01 parts ), after being mixed by a mixer, 0.5kg of water is added to stir for 3 minutes, then the material is loaded into the mold for molding, and the mold is demoulded after curing for 12 hours. After 7 days, the compressive strength of the calcium carbide slag brick can reach 10.5MPa.

Embodiment 2

[0017] After crushing the calcium carbide slag through a 40-mesh standard sieve, weigh 2.0 kg of calcium carbide slag powder, 1.0 kg of quartz sand (the particle size is required to pass through a 16-mesh standard sieve) and 1.0 kg of inorganic catalyst activator (wherein, active SiO2: 55 parts , active TiO2: 24.6 parts, active Al2O3: 16.09 parts, Na2SiO3: 3 parts, Fe: 0.5 parts, CuSO4: 0.6 parts, Na2CO3: 0.1 parts, Na2SiF6: 0.1 parts and CeO2: 0.01 parts), after mixing by a mixer, and then After adding 0.5kg of water and stirring for 5 minutes, the material is loaded into the mold for molding, and the mold is demoulded after curing for 12 hours. After 7 days, the compressive strength of the carbide slag brick can reach 10.2MPa.

Embodiment 3

[0019] After crushing the calcium carbide slag through a 40-mesh standard sieve, weigh 1.0 kg of calcium carbide slag powder, 2.0 kg of quartz sand (the particle size is required to pass through a 16-mesh standard sieve) and 1.0 kg of inorganic catalyst activator (among them, active SiO2: 60.6 parts , active TiO2: 18 parts, active Al2O3: 17 parts, Na2SiO3: 3 parts, Fe: 0.5 parts, CuSO4: 0.6 parts, Na2CO3: 0.19 parts, Na2SiF6: 0.1 parts and CeO2: 0.01 parts), after mixing by a mixer, and then After adding 0.5kg of water and stirring for 5 minutes, the material is loaded into the mold for molding, and the mold is demoulded after 24 hours of curing. After 7 days, the compressive strength of the carbide slag brick can reach 20.8MPa.

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Abstract

The catalytically cemented calcium carbide slag brick of the present invention is prepared by using calcium carbide slag and inorganic fine aggregate as main raw materials, adding an appropriate amount of water, and cementing with an inorganic catalytic activator. The calcium carbide slag brick prepared by the invention has the characteristics of large calcium carbide slag content, high strength, excellent heat resistance and water resistance, smooth surface, stable physical properties and the like. It has a wide range of sources of raw materials, simple production process, no energy consumption, and no pollution. It is a typical environmental protection and energy-saving product that turns waste into treasure.

Description

technical field [0001] The invention relates to a high-strength non-steaming and pressure-free non-sintered calcium carbide slag brick, in particular to a catalytic cemented calcium carbide slag brick, which belongs to building decoration materials. Background technique [0002] Carbide slag is the waste residue produced after the hydrolysis of calcium carbide in the process of industrial production of acetylene (the raw material of polyvinyl chloride, polyvinyl alcohol and other chemical products). Only 1 ton of PVC resin will produce 1.4 to 1.8 tons of calcium carbide slag on a dry basis. The calcium carbide slag produced by my country's industrial production exceeds 5 million tons per year, and the utilization rate is less than 10%. Due to the large quantity of carbide slag and the high transportation cost, most of the carbide slag produced by domestic chemical manufacturers are disposed of by stacking or landfilling. This not only takes up valuable land resources, but a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/04
CPCY02W30/91
Inventor 祝社民沈岳松王家雷汪远波
Owner NANJING UNIV OF TECH
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