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A kind of slag condition modifier for extracting vanadium and chromium in low-silicon molten iron converter and preparation method thereof

A slag state adjustment and adjustment agent technology, which is applied in the field of slag state adjustment agent for vanadium and chromium extraction in low-silicon molten iron converters and its preparation field, can solve the problems of vanadium-chromium slag slag state viscosity, slag and iron are not divided, etc., and achieves lower melting point. , reducing the amount of iron, good adaptability and scientific effect

Active Publication Date: 2016-11-02
PANGANG GROUP RESEARCH INSTITUTE CO LTD
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AI Technical Summary

Problems solved by technology

[0012] The invention provides a slag state regulator for vanadium and chromium extraction in a low-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] Quartz sand, high-grade manganese ore, soda ash, and active lime are used as raw materials, and mixed evenly to obtain the following components of the regulator: SiO 2 55%, MnO 20%, Na 2 O 10%, CaO 5%, S2 O<2%, the balance is iron oxide. After using the adjuster, the amount of vanadium chrome slag iron content is reduced from 12% to 3%.

Embodiment 2

[0041] Use silica ore, manganese-containing dust, soda ash, and active lime as raw materials, and mix them evenly to obtain the following modifier components: SiO 2 25%, MnO 20%, Na 2 O 8%, CaO 4%, S2 O<2%, the balance is iron oxide. After using the regulator, the amount of vanadium chrome slag iron content is reduced from 12% to 6%.

Embodiment 3

[0043] Use silica ore, high-grade manganese ore, and soda ash as raw materials, and mix them evenly to obtain the composition of the modifier as follows: SiO 2 45%, MnO15%, Na 2 O 10%, S2 O<2%, the balance is iron oxide. After using the regulator, the amount of vanadium chrome slag iron content is reduced from 12% to 5%.

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Abstract

The invention relates to a slag state regulator used for vanadium-chromium extracting in a converter by utilizing low-silicon molten iron and a preparation method for the slag state regulator, and belongs to the field of iron and steel smelting. The slag state regulator is prepared by the following raw materials in weight percentage: 25-55% of SiO2, 0-20% of MnO, 0-10% of Na2O, 0-5% of CaO, not higher than 0.02% of sulfur, not higher than 2% of H2O and the balance of iron oxide. The prepared slag state regulator is applicable to vanadium-chromium slag production under the condition that the content of molten iron silicon is not higher than 0.20%; through the adoption of the prepared slag state regulator, the vanadium-chromium slag state can be obviously regulated to lower the melting point of the vanadium-chromium slag; compared with the conventional vanadium extracting in the converter, the vanadium extracting in which the slag state regulator is involved has the advantage that the iron content in the vanadium-chromium slag can be lowered, so that the resource utilization can be facilitated, and the production cost for a vanadium-chromium extracting process can be reduced.

Description

technical field [0001] The invention relates to a slag state regulator for vanadium and chromium extraction in a low-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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