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Method for synthesizing raw materials for calcium carbide smelting with semi-coke, calcined coal and lime powder

A technology for synthesizing calcium carbide and powder, which is applied in the field of calcium carbide smelting, which can solve the problems that calcined coal, semi-coke and lime powder cannot be used, cannot be widely popularized and utilized, and the process cost is high, and achieve the effects of qualified products, environmental protection, and low cost

Inactive Publication Date: 2011-12-14
宁夏兴平精细化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, because the electrode cost of the hollow electrode is more than three times that of the ordinary electrode, the process cost is high and the technical requirements are high, and it cannot be widely popularized and utilized, resulting in calcined coal, semi-coke and lime powder becoming unusable industrial solid waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Take 30% semi-coke powder (with a particle size below 1mm), 30% calcined coal powder (with a particle size below 1mm), 30% lime powder (with a particle size below 0.5mm), and 10% medium-temperature coal tar pitch (melted state) , mixed according to the above quantitative ratio, added to a constant temperature stirring pot at 200°C and stirred for 15 minutes, opened the outlet of the stirring pot, transported the mixture to the raw material site, spread it and cooled it into irregular balls with a diameter of 0.5-3cm After natural cooling, it can become the pellet raw material for calcium carbide smelting. The raw material (by testing the pellet, its main content index is 63% fixed carbon; 24% calcium oxide; 3% hydrocarbon; 8% ash; volatile According to a certain proportion, white ash, semi-coke or calcined coal can be added into the furnace to smelt calcium carbide, and the carbon and calcium oxide required for calcium carbide smelting can participate in the smelting rea...

Embodiment 2

[0013] According to 28% semi-coke powder (particle size below 1mm), 29% calcined coal powder (particle size below 1mm), 29% lime powder (particle size below 0.5mm), 14% medium temperature coal tar pitch (melting state) Mix and mix evenly, stir at a constant temperature of 200°C for 13 minutes, open the outlet of the mixing pot, transport the mixture to the raw material site, spread and cool it into irregular pellets with a diameter of 0.5-3cm, after natural cooling, that is It can be used as pellet raw material for calcium carbide smelting. The raw material is mixed with lime, semi-coke or calcined coal in a certain proportion, and can be put into the furnace to smelt calcium carbide. The carbon and calcium oxide required for calcium carbide smelting can participate in the smelting reaction.

Embodiment 3

[0015] According to 29% semi-coke powder (with a particle size below 1mm), 28% calcined coal powder (with a particle size below 1mm), 30% lime powder (with a particle size below 0.5mm), and 13% medium-temperature coal tar pitch (melted state) Mix and mix evenly, stir at a constant temperature of 200°C for 15 minutes, open the outlet of the mixing pot, transport the mixture to the raw material site, spread and cool it into irregular pellets with a diameter of 0.5-3cm, after natural cooling, that is It can be used as pellet raw material for calcium carbide smelting. The raw material is mixed with lime, semi-coke or calcined coal in a certain proportion, and can be put into the furnace to smelt calcium carbide. The carbon and calcium oxide required for calcium carbide smelting can participate in the smelting reaction.

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Abstract

The invention relates to a method for synthesizing raw materials for calcium carbide smelting by using semi-coke, calcined coal and lime powder. The process steps are: combining semi-coke powder, calcined coal powder, lime powder and medium-temperature coal tar pitch according to 28-30%: 28-30 %: 28-30%: 10-16% by weight and mix evenly, then stir for 10-15 minutes at a constant temperature of 200°C-220°C, and finally roll out and cool naturally to form pellets. The method of the invention can fully utilize semi-coke, calcined coal and lime in calcium carbide smelting under the condition of low cost and low technical requirements, so as to achieve the purposes of reducing cost, saving resources and protecting the environment.

Description

technical field [0001] The invention relates to the technical field of calcium carbide smelting, in particular to a method for synthesizing raw materials for calcium carbide smelting by using semi-coke, calcined coal and lime powder. Background technique [0002] When calcined coal, semi-coke or lime powder is used for calcium carbide smelting, hollow electrodes must be used. In this method, since the electrode cost of the hollow electrode is more than three times that of the ordinary electrode, the process cost is high and the technical requirements are high, and it cannot be widely popularized and utilized, resulting in calcined coal, semi-coke and lime powder becoming unusable industrial solid waste. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a method for synthesizing calcium carbide smelting raw materials with semi-coke, calcined coal and lime powder with low cost a...

Claims

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Application Information

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IPC IPC(8): C01B31/36
Inventor 高尚忠
Owner 宁夏兴平精细化工股份有限公司
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