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Method for producing cement by using waste residue generated by polyvinyl chloride by calcium carbide method

A technology of polyvinyl chloride and carbide slag, applied in cement production, etc., can solve problems such as unsuitable for large-scale promotion and application, cumbersome and complicated operation, high equipment requirements, etc., and achieve low production cost, low equipment investment, and environmental protection.

Inactive Publication Date: 2010-09-29
王嘉兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above method successfully modifies calcium carbide slag or directly uses it as a raw material for cement production, its operation is very cumbersome and complicated, and it requires high equipment, so it is not suitable for large-scale application.

Method used

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  • Method for producing cement by using waste residue generated by polyvinyl chloride by calcium carbide method
  • Method for producing cement by using waste residue generated by polyvinyl chloride by calcium carbide method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] refer to figure 1 , the 693.75kg calcium carbide slag produced by calcium carbide method polyvinyl chloride is centrifuged in the centrifuge (4), the water content of the calcium carbide slag is controlled at 20%, and then the calcium carbide slag and clay are dropped into according to the ratio of 1: 0.3 according to the mass ratio Stir evenly in the mixing mixer (5), then use the blank forming machine (6) to press into blanks, put them into the calciner (7), and calcinate at 550°C to make calcium carbide slag and clay dehydrate and decompose into oxidized The mixture I of calcium, silicon oxide, aluminum and iron is cooled after coming out of the furnace, and is pulverized into 60 mm lumps with a pulverizer (8), then mixes with the raw gypsum of mixture I quality 4%, enters a ball mill (9) and grinds into 750 The purpose fine powder is then bagged, weighed, and packed to obtain the finished cement product (10) of 790.875kg.

[0022] Embodiment two:

Embodiment 2

[0024] refer to figure 1 , the 693.75kg calcium carbide slag produced by the calcium carbide process polyvinyl chloride is centrifuged in the centrifuge (4), the water content of the calcium carbide slag is controlled at 40%, and then the calcium carbide slag and clay are dropped into according to the ratio of 1: 0.45 according to the mass ratio Stir evenly in the mixing mixer (5), and then use the blank forming machine (6) to press into a blank, put it in the calciner (7), and calcinate at 650°C to remove moisture from the calcium carbide slag and clay, and decompose them into oxidized The mixture I of calcium, silicon oxide, aluminum and iron is cooled after coming out of the furnace, and is pulverized into 80 mm lumps with pulverizer (8), then mixes with the raw gypsum of mixture I quality 6%, enters ball mill (9) and grinds into 750 The purpose fine powder is then bagged, weighed, and packed to obtain the finished cement product (10) of 770.065kg.

[0025] Embodiment thre...

Embodiment 3

[0027] refer to figure 1 , the 693.75kg calcium carbide slag produced by the calcium carbide process polyvinyl chloride is centrifuged in the centrifuge (4), the water content of the calcium carbide slag is controlled at 30%, and then the calcium carbide slag and clay are dropped into according to the ratio of 1: 0.6 according to the mass ratio Stir evenly in the mixing mixer (5), then use the blank forming machine (6) to press into blanks, put them into the calciner (7), and calcinate at 600°C to remove moisture from the calcium carbide slag and clay, and decompose them into oxidized The mixture I of calcium, silicon oxide, aluminum and iron is cooled after coming out of the furnace, and is pulverized into 100 mm lumps with a pulverizer (8), then mixes with the raw gypsum of mixture I quality 8%, enters the ball mill (9) and grinds into 750 The purpose fine powder is then bagged, weighed, and packed to obtain the finished cement product (10) of 957.375kg.

[0028] The above-...

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Abstract

The invention discloses a method for producing cement by using waste residue generated by polyvinyl chloride by a calcium carbide method. The method comprises the following steps of: preparing acetylene by using calcium carbide and water in a gas generator; discharging calcium carbide residue; firing the calcium carbide residue and clay in a certain ratio to form gel solid; and crushing and grinding the gel solid into a finished product of the cement. The method has the characteristics of capability of turning waste into treasure, large amount of waste residue consumption, environment protection, low production cost, simple production process, and great economic benefit.

Description

technical field [0001] The invention relates to utilization of waste residue produced by calcium carbide method polyvinyl chloride, in particular to a method for producing cement by using waste residue produced by calcium carbide method polyvinyl chloride. Background technique [0002] The waste slag produced by calcium carbide method polyvinyl chloride is calcium carbide slag, which is the residue produced by the hydrolysis of calcium carbide to produce acetylene. It is an emulsion with a solid content of 8%-10%, also known as calcium carbide mud. Its main chemical composition is hydrogen oxidation. Calcium also contains solid impurities such as calcium silicate, calcium aluminate, ferrosilicon and carbon slag, and aqueous solutions such as calcium sulfide, calcium hydroxide, and acetylene. It is a strong alkaline and rich in calcium resources. Raw materials can be used to produce a series of products that require calcium as raw materials, such as calcium carbonate and ceme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/14
CPCY02P40/10
Inventor 王嘉兴
Owner 王嘉兴
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