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Process for direct smelting of calcium carbide in converter by using liquid dross slag or steel slag

A technology of iron slag and liquid state, which is applied in the field of calcium carbide smelting, can solve the problems of high energy consumption, large electricity consumption, and large factory building area, and achieve the effect of low energy consumption and small investment

Inactive Publication Date: 2006-12-27
徐建明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The factory building of the electric furnace in this method occupies a large area, the foundation project is large, the investment is large, the power consumption is large, and the energy consumption is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: In the converter, first add manganese ore or iron ore or steel scrap, then add liquid iron slag or steel slag, blow steam or oxidized slag at the top of the furnace, blow steam or coal gas or air or acetylene gas at the bottom of the furnace and The gas and powder mixture of coal powder is blown for 15 to 20 minutes, and the temperature is raised above 2000°C to reduce it into calcium carbide liquid. The weight of each component in the converter is: liquid iron slag with a calcium content of more than 60% Or 100 parts of steel slag, 5-8 parts of manganese ore or iron ore or scrap steel, 15-20 parts of coal powder.

Embodiment 2

[0011] Example 2: In the converter, first add manganese ore or iron ore or scrap steel and limestone, then add liquid iron slag or steel slag, blow steam or oxygenated slag at the top of the furnace, and blow steam or gas or air or acetylene at the bottom of the furnace The gas and powder mixture of gas and coal powder is blown for 15 to 20 minutes, and the temperature is raised above 2000 ° C to reduce it into calcium carbide liquid. The weight of each component in the converter is: liquid state with a calcium content of less than 60% 100 parts of iron slag or steel slag, 20-25 parts of manganese ore or iron ore or steel scrap, 5-8 parts of coal powder and limestone. Wherein the addition of limestone is to make the total calcium content in liquid state iron slag or steel slag and limestone more than 60%.

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PUM

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Abstract

The invention discloses a direct melting method of calcium carbide through liquid-state iron portland or steel portland in the revolving furnace, which is characterized by the following: adopting liquid-state iron portland or steel portland as raw material; mating manganese ore or iron ore or waste steel as carbon stabilizer; blowing steam or oxygen from above of revolving furnace; blowing steam or air or flux or acetylene or coal powder and gas from bottom of furnace to prepare calcium carbide liquid. The method comprises the following steps: adding manganese ore or iron ore or waste steel in the revolving furnace; adding liquid-state iron portland or steel portland in the revolving furnace; blowing steam or oxygen from above of revolving furnace; blowing steam or air or flux or acetylene or coal powder and gas from bottom of furnace for 15-20 min; heating temperature at over 2000 deg.c to reduce into calcium carbide liquid.

Description

Technical field: [0001] The invention relates to a method for refining calcium carbide. Specifically relates to a method for directly smelting calcium carbide using a converter with liquid iron slag or steel slag. It belongs to the field of metallurgy technology. Background technique: [0002] Before the present invention was made, what traditionally smelted calcium carbide used was the electric furnace method: that is to say, lime blocks and coke blocks were put into the electric furnace to be smelted into calcium carbide liquid above 2000°C. The factory building of this method to build an electric furnace has a large area, a large foundation project, a large amount of investment, a large power consumption, and high energy consumption. Invention content: [0003] The object of the present invention is to overcome above-mentioned deficiency, provide a kind of method of directly smelting calcium carbide with liquid iron slag or steel slag utilizing converter with low inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/32B09B3/00C01B32/942
Inventor 徐建明
Owner 徐建明