Process for utilizing waste smelting dregs of rare-earth ferrosilicon

A rare earth ferrosilicon and waste slag technology is applied in the field of utilization of rare earth ferrosilicon smelting waste, which can solve the problems of affecting environmental protection, failure to utilize rare earth ferrosilicon smelting waste, waste, etc., so as to reduce waste slag, reduce comprehensive production costs, and reduce stacking field effect

Inactive Publication Date: 2005-07-06
方星伯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After the rare earth ferrosilicon is smelted, a large amount of slag will appear, and these slags are only piled together as waste at present, which not only affects environmental protection, but also causes waste. So far, the waste slag of rare earth ferrosilicon smelting has not been utilized

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A method for utilizing rare earth ferrosilicon smelting waste slag according to the present invention is to add rare earth ferrosilicon smelting waste slag, lime equivalent to 10% of the weight of the waste slag, steel scrap equivalent to 5% of the weight of the waste slag, and waste steel equivalent to 5% of the weight of the waste slag. 25% of the ferrosilicon by weight and 5% of the rare earth concentrate equivalent to the weight of the waste slag are added to the furnace for heating. After the above-mentioned furnace charge starts to melt, stir, and when the furnace charge is completely melted, the discharged material is poured into the ingot mold. Slag and iron are separated after cooling.

Embodiment 2

[0013] A method for utilizing rare earth ferrosilicon smelting waste slag according to the present invention is to add rare earth ferrosilicon smelting waste slag, lime equivalent to 25% of the weight of waste slag, scrap steel equivalent to 10% of the weight of waste slag added, 30% of the weight of ferrosilicon and 10% of the weight of the rare earth concentrate equivalent to the waste slag are added to the furnace for heating. After the above-mentioned furnace charge starts to melt, it is stirred. When the furnace charge is completely melted, the discharged material is poured into the ingot mold. Slag and iron are separated after cooling.

Embodiment 3

[0015] A method for utilizing rare earth ferrosilicon smelting waste slag according to the present invention is to add rare earth ferrosilicon smelting waste slag, lime equivalent to 30% of the weight of waste slag, steel scrap equivalent to 15% of the weight of waste slag added, 35% of the weight of ferrosilicon and 15% of the weight of the rare earth concentrate equivalent to the waste slag are added to the furnace for heating. After the above furnace charge starts to melt, it is stirred. When the furnace charge is completely melted, the discharged material is poured into the ingot mold. Slag and iron are separated after cooling.

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PUM

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Abstract

A process for utilizing the waste slags after smelting rare-earth ferrosilicon includes such steps as adding the following Wt.% of the said waste slags of lime 10-45%, scrap steel 5-25%, ferrosilicon25-45% and rare-earth ore concentrate 5-30% to waste slags and loading into furnace, heating, smelting while stirring, discharging to ingot mould, cooling and separation of slag from iron.

Description

technical field [0001] The invention relates to a utilization method of rare earth ferrosilicon smelting waste residue. Background technique [0002] After the rare earth ferrosilicon is smelted, a large amount of slag will appear, and these slags are only piled together as waste at present, which not only affects environmental protection, but also causes waste. So far, the waste slag of rare earth ferrosilicon smelting has not been utilized. Contents of the invention [0003] The purpose of the present invention is to provide a utilization method of rare earth ferrosilicon smelting waste residue which is beneficial to environmental protection and can reduce overall production cost. [0004] The present invention adopts following technical scheme to realize its object of the invention: [0005] The present invention is a method for utilizing rare earth ferrosilicon smelting waste slag. The method is to add rare earth ferrosilicon smel...

Claims

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Application Information

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IPC IPC(8): C21B3/04C22C33/04
CPCY02P10/20Y02W30/50
Inventor 方星伯胡良在谈荣生王仲山
Owner 方星伯
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