Additive for carbon composite briquette and preparation and using methods thereof

A technology of additives and carbon pellets, which is applied in the field of additives and hot-pressed carbon-containing pellets, can solve the problems of inability to be directly applied, and achieve the effects of reducing cyclic enrichment, small usage amount and simple usage method.

Inactive Publication Date: 2014-01-01
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production process of sinter and pellets is under an oxidizing atmosphere and undergoes a roasting stage, while the production process of hot-pressed carbon-containing pellets is under a reducing atmosphere, so sinter and pellet additives cannot be directly applied to hot-pressed carbon-containing pellets During group production

Method used

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  • Additive for carbon composite briquette and preparation and using methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The raw material components and content are: quicklime 55%, barium oxide 18%, manganese dioxide 18%, and ferrocene 9%. The above-mentioned raw materials are added to the mixing machine and stirred for 10 minutes to make the mixing uniform to obtain the powdery additive.

Embodiment 2

[0028] The raw material components and content are: quicklime 50%, barium oxide 22%, manganese dioxide 19%, and ferrocene 9%. The above-mentioned raw materials are added to the mixing machine and stirred for 15 minutes to make the mixture uniform to prepare the powdery additive.

Embodiment 3

[0030] The raw material components and content are: quicklime 40%, barium oxide 20%, manganese dioxide 30%, and ferrocene 10%. The above-mentioned raw materials are added to the blender and stirred for 20 minutes to make the mixture uniform to prepare the powdery additive.

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Abstract

The invention provides an additive for a carbon composite briquette. The additive comprises the following raw materials in percentage by weight: 40%-55% of quicklime, 18%-32% of barium oxide, 10%-30% of manganese dioxide and 9%-10% of ferrocene. The raw materials are placed into a mixing machine in proportion, stirring for 10-20min, and the powder-like additive is obtained after uniform mixing. When the additive is used, the additive accounts for 1%-2% of the mass of the carbon composite briquette. The additive provided by the invention can play the roles as a catalyst and a flux during the reduction process of the carbon composite briquette, reduce the coal blending quantity by 8-9%, improve the reduction rate by 5.5% and shorten the reduction time by 10%. The additive can further significantly reduce the emission quantity of harmful gas during the reduction process of the carbon composite briquette and reduce the environmental pollution. The raw materials do not contain K, Na and other substances which are harmful to the iron-smelting process, so that the circulating enrichment of the harmful substances during the smelting process can be avoided. The additive has the advantages of cheap price and small using quantity; and furthermore, preparation and using methods thereof are simple and suitable for industrial production.

Description

Technical field [0001] The invention belongs to the technical field of iron smelting pellets, and particularly relates to an additive used for hot-pressing carbon-containing pellets and a preparation and use method thereof. Background technique [0002] At present, the problems faced by steel production are long process flow and serious environmental pollution. In addition, the conditions of raw materials and fuels have gradually deteriorated, and the amount of high-quality mineral resources has decreased, while the high crystal water and high A1 2 O 3 The use of high-content ore increases, which makes sintering and pellet production face great difficulties, and at the same time increases the burden on the blast furnace, resulting in a decline in its smelting index. In addition, high-quality coking coal resources are increasingly scarce worldwide and extremely expensive. Therefore, in order to continue the healthy development of the steel industry, all countries are committed to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/245
Inventor 韩子文王再义李金莲任伟王亮张伟
Owner ANGANG STEEL CO LTD
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