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A kind of slag state regulator for vanadium and chromium extraction in high-silicon molten iron converter and preparation method thereof

A technology of slag state adjustment and adjustment agent, which is applied in the field of slag state adjustment agent for extracting vanadium and chromium in high-silicon molten iron converter and its preparation field, can solve the problems of slag-iron separation, vanadium-chromium slag viscosity, etc. Effects of iron content, melting point depression, good adaptability and scientific

Active Publication Date: 2016-10-05
PANGANG GROUP RESEARCH INSTITUTE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The invention provides a slag state regulator for vanadium and chromium extraction in a high-silicon molten iron converter, in order to solve the problem of viscous vanadium-chromium slag state and indistinguishable slag and iron produced in the vanadium and chromium extraction process of high-chromium-containing vanadium-chromium molten iron

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Use quartz sand, manganese ore, active lime, soda ash, and iron ore powder as raw materials, mix each raw material evenly in a certain proportion, and the composition range of the slag state regulator is: SiO 2 20%, MnO 25%, Na 2 O 5%, CaO 5%, S2 O<2%, the balance is iron oxide.

[0040] After adjusting the vanadium-chromium slag and splashing the slag with this slag adjusting agent, continue to extract the vanadium-chromium 6 furnace, and the overall thickness of the furnace lining is still 2-4mm thicker than before the slag splashing.

[0041] In the slag splash protection of the vanadium chromium extraction converter, after using the slag state regulator, it can effectively reduce the melting point of the vanadium chromium slag, improve the adhesion of the vanadium chromium slag, and enhance the effect of slag splashing and slag hanging.

Embodiment 2

[0043] Use silica ore, manganese ore, active lime, and iron ore powder as raw materials, mix each raw material evenly in a certain proportion, and the composition range of the slag state regulator is: SiO 2 15%, MnO 25%, CaO 2%, S2 O<2%, the balance is iron oxide.

[0044] After adjusting the vanadium-chromium slag and splashing the slag with this slag adjusting agent, continue to extract vanadium and chromium for 5 furnaces, and the overall thickness of the furnace lining is still 1-3mm thicker than before the slag splashing.

[0045] In the slag splash protection of the vanadium chromium extraction converter, after using the slag state regulator, it can effectively reduce the melting point of the vanadium chromium slag, improve the adhesion of the vanadium chromium slag, and enhance the effect of slag splashing and slag hanging.

Embodiment 3

[0047] Use quartz sand, manganese ore, soda ash, and iron red as raw materials, mix each raw material evenly in a certain proportion, and the composition range of the slag state regulator is: SiO 2 20%, MnO 5%, Na 2 O 5%, S2 O<2%, and the balance is iron oxide. After adjusting the vanadium-chromium slag and splashing the slag with this slag adjusting agent, continue to extract vanadium and chromium for 3 furnaces, and the overall thickness of the furnace lining is still 3-5mm thicker than before the slag splashing.

[0048] In the slag splash protection of the vanadium chromium extraction converter, after using the slag state regulator, it can effectively reduce the melting point of the vanadium chromium slag, improve the adhesion of the vanadium chromium slag, and enhance the effect of slag splashing and slag hanging.

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Abstract

The invention relates to a slag state regulator for extracting vanadium and chromium from high-silicon molten iron through a converter and a preparation method thereof, and belongs to the field of steel and iron smelting. The regulator comprises the following raw material components in percentage by weight: 0-20 percent of SiO2, 5-25 percent of MnO, 0-5 percent of Na2O, 2-5 percent of CaO, smaller than 0.02 percent of S, smaller than 2 percent of H2O and the balance of ferric oxide. The regulator is suitable for producing the vanadium and chromium slag when the silicon content of the molten iron is greater than 0.25 percent by weight. According to the slag state regulator for extracting the vanadium and the chromium from high-silicon molten iron through the converter, the slag state of the vanadium and chromium slag can be obviously regulated, so the smelting point of the vanadium and the chromium slag is reduced; compared with the converter vanadium extraction, the regulator has the advantages that the amount of iron carried in the vanadium and the chromium slag can be reduced, the resource utilization is facilitated, and the production cost of the vanadium and the chromium extraction process is reduced.

Description

technical field [0001] The invention discloses a slag state regulator for vanadium and chromium extraction in a high-silicon molten iron converter and a preparation method thereof, belonging to the field of iron and steel smelting. Background technique [0002] my country is a big country of vanadium-titanium magnetite. Hongge vanadium-titanium magnetite in Panzhihua area is the largest chromium ore resource in my country, with a reserve of 3.6 billion tons, containing up to 18 million tons of Cr2O3, which is nearly two of the proven reserves in other parts of the country. times. The high-chromium type Hongge vanadium-titanium magnetite deposit is not only the largest among the four major mining areas in Panxi, but also the largest vanadium-titanium magnetite deposit in China. The ore deposit occurs in the huge layered-like layered intermediate-basic-basic-ultrabasic differentiated complex formed in the early Hercynian period. The magma is well differentiated, and it belongs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/36
Inventor 陈炼谢兵王建戈文荪曾建华董克平黄正华李龙蒋龙奎
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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