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Recovery method of high calcium vanadium slag

A recovery method and technology for vanadium slag, applied in the field of metallurgy, can solve the problems of reducing the recovery amount of vanadium-containing slag, high TFe content, easy occurrence of slag overflow, etc., so as to avoid waste of vanadium resources, increase recovery amount, and reduce labor intensity. Effect

Active Publication Date: 2018-01-09
PANGANG GROUP CHENGDU STEEL & VANADIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the vanadium-containing slag recovery technology is to directly pour the vanadium-containing slag into the slag pot for recovery after the blowing is completed. Due to the high oxidation property of the liquid slag and the severe foaming, the slag overflow is easy to occur during the recovery process, and it is scattered on the slag channel and slag. On the truck, reduce the recovery of vanadium-containing slag per furnace, resulting in waste of resources; easily cause damage to the slag tank and slag tank truck; increase the labor intensity of manual cleaning of vanadium-containing slag spilled on the slag channel and slag tank truck; and the TFe content in the slag High, metal droplets are difficult to achieve separation of slag and iron, which is not conducive to subsequent vanadium extraction and utilization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] For the 80t converter, the specific implementation is as follows:

[0027] 1) After the converter adopts vanadium-containing hot metal single-stage vanadium extraction, steelmaking and blowing to extract vanadium, the high-calcium vanadium slag recovery station prepares the slag tank for receiving high-calcium vanadium slag, and then shakes the furnace to pour high-calcium vanadium slag, high-calcium vanadium slag The chemical composition is calculated by weight percentage and includes: V 2 o 5 : 9~11%, CaO: 20~30%;

[0028] 2) Add 40kg of vanadium slag foaming inhibitor to the liquid high-calcium vanadium slag flowing out from the furnace mouth;

[0029] 3) Granular or massive vanadium slag foaming inhibitor, with a particle size of 5-50 mm;

[0030] 4) The vanadium slag foaming inhibitor is prepared by mixing calcium carbide, lime, quartz sand, coal or wood chips, aluminum powder and other materials. Its chemical composition is calculated by weight percentage: Ca: ...

Embodiment 2

[0034] For the 80t converter, the specific implementation is as follows:

[0035] 1) After the converter adopts vanadium-containing hot metal single-stage vanadium extraction, steelmaking and blowing to extract vanadium, the high-calcium vanadium slag recovery station prepares the slag tank for receiving high-calcium vanadium slag, and then shakes the furnace to pour high-calcium vanadium slag, high-calcium vanadium slag The chemical composition is calculated by weight percentage and includes: V 2 o 5 : 9~11%, CaO: 20~30%;

[0036] 2) Add 120kg of vanadium slag foaming inhibitor to the liquid high-calcium vanadium slag flowing out from the furnace mouth;

[0037] 3) Granular or massive vanadium slag foaming inhibitor, with a particle size of 5-50mm;

[0038] 4) The vanadium slag foaming inhibitor is prepared by mixing calcium carbide, lime, quartz sand, coal or wood chips, aluminum powder and other materials. Its chemical composition is calculated by weight percentage: Ca: ...

Embodiment 3

[0042] For the 80t converter, the specific implementation is as follows:

[0043] 1) After the converter adopts vanadium-containing hot metal single-stage vanadium extraction, steelmaking and blowing to extract vanadium, the high-calcium vanadium slag recovery station prepares the slag tank for receiving high-calcium vanadium slag, and then shakes the furnace to pour high-calcium vanadium slag, high-calcium vanadium slag The chemical composition is calculated by weight percentage and includes: V 2 o 5 : 9~11%, CaO: 20~30%;

[0044] 2) Add 40kg of vanadium slag foaming inhibitor to the slag tank receiving liquid high-calcium vanadium slag;

[0045] 3) Granular or massive vanadium slag foaming inhibitor, with a particle size of 5-50mm;

[0046] 4) Vanadium slag foaming inhibitor is prepared by mixing calcium carbide, lime, quartz sand, coal or wood chips, aluminum powder and other materials. Its chemical composition is calculated by weight percentage: Ca: 29%, Si: 50%, Al: 3%,...

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Abstract

The present invention discloses a high calcium vanadium slag recovery method comprising the following steps: adding a vanadium slag foaming inhibitor in the high calcium vanadium slag pouring process of a converter furnace and a rocking furnace, wherein the vanadium slag foaming inhibitor comprises the following chemical components by weight: 20 to 30 parts of Ca, 50 to 60 parts of Si, 2 to 4 parts of Al and 10 to 20 parts of a solid C. The vanadium slag foaming inhibitor is added into the liquid high calcium vanadium slag for rapidly reacting with the high calcium vanadium slag to reduce slag viscosity, high calcium vanadium slag foaming can be eliminated, overflowing in the slag recycling process can be prevented, high calcium vanadium slag recovery amount can be improved, slag pot and slag tanker damage can be reduced, labor intensity can be reduced, high calcium vanadium slag oxide property can be reduced, slag TFe content can be reduced, and meanwhile the high calcium vanadium slag recovery method can ensure high calcium vanadium slag chemical composition meets the follow-up vanadium extraction use.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for recovering high-calcium vanadium slag from a converter. Background technique [0002] Vanadium-titanium magnetite is the main mineral resource of vanadium, and most of the vanadium in the world is obtained from it. There are large reserves of vanadium-titanium magnetite in the world, and they are concentrated in a few countries. my country is rich in vanadium-titanium magnetite resources, and its reserves rank third in the world after South Africa and Russia. The smelting of vanadium-titanium magnetite in various countries mainly uses blast furnace or rotary kiln-electric furnace to smelt vanadium-containing molten iron. At present, there are many methods for recovering vanadium from vanadium-containing molten iron at home and abroad. The main processes are: 1. There is only one company for vanadium extraction and vanadium extraction in molten iron tanks, vanadi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/04C22B34/22C21B3/04
CPCY02P10/20Y02W30/50
Inventor 蔡永红易良刚蒋世川黄生权张珉陈坤
Owner PANGANG GROUP CHENGDU STEEL & VANADIUM
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