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Method for preparing calcium carbide smelting raw material by jet coal powder and quick lime powder

A technology of quicklime powder and long-flame coal, applied in the direction of carbide, calcium carbide, etc., can solve the problems of waste, low utilization efficiency, low efficiency of production methods, etc., and achieve the effect of improving the average compressive strength and realizing effective utilization.

Inactive Publication Date: 2017-12-01
SHENWU ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] China's long-flame coal reserves are huge and the price is low, but there are problems such as low efficiency and serious waste in its utilization
At present, the utilization rate of lumpy long-flame coal is relatively high, but a large amount of powdered long-flame coal is produced at the same time, which not only causes a huge waste of resources, but also produces certain environmental pollution. Therefore, the utilization of powdered long-flame coal is imminent
[0003] The traditional calcium carbide industry mainly uses lump coal and lump quicklime as raw materials to produce calcium carbide, but this production method is inefficient, mainly due to the small contact area and slow reaction speed of lump coal and lump quicklime

Method used

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  • Method for preparing calcium carbide smelting raw material by jet coal powder and quick lime powder

Examples

Experimental program
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Effect test

Embodiment 1

[0021] A method for preparing calcium carbide smelting raw materials from long-flame coal powder and quicklime powder. First, weigh a certain amount of long-flame coal powder and quicklime powder to form a mixture in step S100, so that the mass ratio of the two is 0.92:1, and then in step S200 Add binder powder accounting for 10% of the mass of the mixture, the size of the binder powder is 100 mesh, mix the above materials evenly, and the mixing time is 10 minutes; in step S300, put the above mixed materials into a briquetting machine for compression molding , The pressure of the ball press is set to 19MPa. Among them, the size of long-flame coal powder, quicklime powder and binder powder is ≤100 mesh.

[0022] The binder is mainly modified low-density polyethylene thermoplastic waste plastic powder, and its preparation method is: after cleaning the waste low-density polyethylene plastic, put it into a crusher, crush it to a size of 100 mesh fine particles, and then heat up M...

Embodiment 2

[0025] A method for preparing calcium carbide smelting raw materials from long-flame coal powder and quicklime powder. First, weigh a certain amount of long-flame coal powder and quicklime powder to form a mixture in step S100, so that the mass ratio of the two is 0.92:1, and then in step S200 Add binder powder accounting for 20% of the mass of the mixture, the size of the binder powder is 100 mesh, mix the above materials evenly, and the mixing time is 15 minutes; in step S300, put the above mixed materials into a briquetting machine for compression molding , The pressure of the ball press is set to 21MPa. Among them, the size of long-flame coal powder, quicklime powder and binder powder is ≤200 mesh.

[0026] The binder is mainly modified low-density polyethylene thermoplastic waste plastic powder, and its preparation method is: clean the waste low-density polyethylene plastic, put it into a crusher and crush it into small particles with a size below 1mm, and then heat up to...

Embodiment 3

[0029] A method for preparing calcium carbide smelting raw materials from long-flame coal powder and quicklime powder. First, weigh a certain amount of long-flame coal powder and quicklime powder to form a mixture in step S100, so that the mass ratio of the two is 0.92:1, and then in step S200 Add binder powder accounting for 15% of the mass of the mixture, the size of the binder powder is 200 mesh, mix the above materials evenly, and the mixing time is 12 minutes; in step S300, put the above mixed materials into a ball press machine and press Forming, the pressure of the ball press is set to 20MPa. Among them, the size of long-flame coal powder, quicklime powder and binder powder is ≤200 mesh.

[0030] The binder is mainly modified low-density polyethylene thermoplastic waste plastic powder. The preparation method is to clean the waste low-density polyethylene plastic, put it into a crusher and crush it into a powdery material with a size of about 200 mesh, and then heat it u...

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Abstract

The invention discloses a method for preparing a calcium carbide smelting raw material by jet coal powder and quick lime powder. The method comprises the following steps: firstly weighing a certain amount of the jet coal powder and quick lime powder, wherein the mass ratio of the jet coal powder and quick lime powder is 0.92:1, and adding binder powder which is 10-20% of the mass ratio, wherein the binder powder is the modified low-density polyethylene thermoplasticity waste plastic powder of which the molecular weight range is 10000-50000, uniformly mixing the above-mentioned materials, wherein the mixing time is 10-15 minutes; placing the mixed materials in a ball press machine for compression-forming, wherein the pressure of the ball press machine is 19-21 MPA, and the size of the jet coal powder, the quick lime powder and the binder powder is less than or equal to 100 meshes. The preparation method is capable of using the modified low-density polyethylene thermoplasticity waste plastic powder as a binder raw material, and realizing the effective utilization of the waste resources in the great degree.

Description

technical field [0001] The invention relates to a method for preparing calcium carbide smelting raw materials from long-flame coal powder and quicklime powder, and specifically belongs to the research field of coal molding technology. Background technique [0002] China's long-flame coal reserves are huge and the price is low, but there are problems such as low efficiency and serious waste in its utilization. At present, the utilization rate of lumpy long-flame coal is high, but a large amount of powdery long-flame coal is produced at the same time, which not only causes a huge waste of resources, but also produces certain environmental pollution. Therefore, the utilization of powdery long-flame coal is imminent. [0003] The traditional calcium carbide industry mainly uses lump coal and lump quicklime as raw materials to produce calcium carbide, but this production method is inefficient, mainly due to the small contact area and slow reaction speed of lump coal and lump quic...

Claims

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Application Information

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IPC IPC(8): C01B32/942
Inventor 夏碧华邓鑫吴道洪
Owner SHENWU ENVIRONMENTAL TECH CO LTD
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