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Slag state regulator for extracting vanadium and chromium by converter and preparation method for slag state regulator

A technology for adjusting and adjusting the slag state, which is applied in the field of slag state adjusting agent for vanadium and chromium extraction in converters and its preparation field, can solve the problems of indistinguishable slag and iron, and the viscosity of vanadium-chromium slag slag state, etc. The effect of lowering the melting point and lowering the iron content

Active Publication Date: 2015-06-03
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 converter, in order to solve the problem that the vanadium chromium slag state is sticky and the slag and iron are not separated during the extraction process of vanadium and chromium in high chromium type molten iron containing vanadium and chromium

Method used

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Examples

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Effect test

preparation example Construction

[0029] A method for preparing a slag state regulator for vanadium and chromium extraction in a converter. During production, the required regulator components are first calculated according to the composition of molten iron, and then the dosage of various raw materials is calculated according to the components of the regulator and the contents of each component in the raw materials, and the mixture is uniform. Then put it into a packaging bag (10-50kg / bag) or add a binder for briquetting.

[0030] In the preparation method of the slag state regulator for vanadium and chromium extraction in the above-mentioned converter, the mass percentage of the added binder is 3-8%.

[0031] Furthermore, in the above-mentioned preparation method of the slag condition regulator for vanadium and chromium extraction in the converter, the mass percentage of the added binder is preferably 5%.

[0032] A method for preparing a slag state regulator for vanadium and chromium extraction in a converte...

Embodiment 1

[0035] 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 40wt%, MnO 20wt%, Na 2 O 10wt%, CaO 8wt%, S<0.02wt%, H2O<2wt%, the balance is iron oxide.

[0036] 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.

[0037] 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

[0039] Use silica ore, manganese ore, active lime, and iron ore powder as raw materials, and mix the raw materials evenly in a certain proportion. The composition range of the slag state regulator is: SiO2 30wt%, MnO 15wt%, CaO 8wt%, S<0.02wt%, H2O <2wt%, the balance is iron oxide.

[0040] 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.

[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.

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Abstract

The invention relates to a slag state regulator for extracting vanadium and chromium by a converter and a preparation method for the slag state regulator, and belongs to the field of iron and steel smelting. The regulator provided by the invention comprises the following raw material components: 0 to 40 weight percent of SiO2, 5 to 20 weight percent of MnO, 0 to 10 weight percent of Na2O, 0 to 8 weight percent of CaO, less than 0.02 weight percent of S, less than 2 weight percent of H2O, and the balance of iron oxide. According to the slag state regulator for extracting the vanadium and the chromium by the converter provided by the invention, the slag states of vanadium slag and chromium slag can be regulated obviously, so that the smelting points of the vanadium slag and the chromium slag are reduced; compared with extracting the vanadium by the converter, the iron amount in the vanadium slag and the chromium slag can be reduced; the slag state regulator is favorable to the utilization of resources; the production cost of a vanadium and chromium extracting process is reduced.

Description

technical field [0001] The invention relates to a slag state regulator for vanadium and chromium extraction in a 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 to the late magma cryst...

Claims

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Application Information

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Patent Type & Authority Applications(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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