Low-cost slag regulating agent for vanadium-extracting converter splash protection

A technology of slag splashing furnace protection and slag adjusting agent, which is applied in the manufacture of converters, etc., can solve the problems of slag splashing furnace protection technology, less research on maintenance and longevity technology, etc., so as to improve the effect of slag hanging and increase Anti-erosion ability and the effect of improving the life of the furnace lining

Active Publication Date: 2013-02-06
PANGANG GROUP RESEARCH INSTITUTE CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the special production of the vanadium extraction converter, there are few researches on its maintenance and longevity technology, especially the slag splash protection technology of the vanadium extraction converter has not been reported.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] Use waste magnesia-carbon bricks, magnesia, graphite, and active lime as raw materials, mix each raw material evenly in a certain proportion, and the composition range of the slagging agent is: C 20%, MgO 72%, CaO 6%, H 2 O 2%.

example 2

[0031] Use waste magnesia-carbon bricks, magnesia, anthracite with a carbon content of 95%, and active lime as raw materials, and mix the raw materials evenly in a certain proportion. The composition range of the slagging agent is: C 20%, MgO 69%, CaO 6%, h 2 O 2%.

example 3

[0033] Use waste magnesia-carbon bricks, magnesia with MgO content of 96%, graphite, and active lime as raw materials, mix each raw material evenly in a certain proportion, and the composition range of the slag adjustment agent is: C 49%, MgO 40%, CaO 7%, H 2 O 3%, and a small amount of impurities.

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Abstract

The invention provides a low-cost slag regulating agent for vanadium-extracting converter splash protection. The slag regulating agent comprises, by weight, from 20% to 50% of C, from 40% to 72% of MgO, from 4% to 7% of CaO and less than or equal to 3% of H2O, and the MgO in the slag regulating agent comprises waste magnesia carbon bricks. The low-cost slag regulating agent for vanadium-extracting converter splash protection has the advantages that waste refractory materials can be effectively utilized; and FeO in vanadium slag can be effectively reduced, the melting point and the adhesion of modified vanadium slag are improved, accordingly, a slag adhering effect can be improved after the slag regulating agent is used for regulating the vanadium slag and the modified vanadium slag is used for converter splash protection, the erosion resistivity of a furnace lining is improved, and the service life of the furnace lining of a vanadium-extracting converter is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of vanadium extraction converter slag splashing protection, more specifically, relates to a low-cost slag adjustment agent for vanadium extraction converter slag splashing protection. Background technique [0002] The converter is the main equipment produced by iron and steel enterprises, and its life is directly related to the production cost of the converter. In order to improve the service life of the converter, in the mid-1990s, LTV Corporation of the United States first developed and adopted the slag splashing protection technology, which greatly increased the service life of the converter, from 6200 furnaces in 1990 to 15658 furnaces in 1995. After adopting the technology of slag splashing to protect the furnace, the consumption of converter refractories is reduced by about 25% to 50%. The furnace life of Japanese converters is not high, generally between 6000 and 8000 furnaces. Under the condition o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/36C21C5/28
Inventor 陈炼戈文荪曾建华陈永王建蒋龙奎卓钧王二军黄正华董克平
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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