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Process for producing electric furnace high-carbon ferromanganese by using coal-produced synthesis gas

A coal-to-synthesis gas and high-carbon ferromanganese technology, applied in the direction of reducing gas emissions, can solve the problems of environmental pollution, high energy consumption, etc., achieve the effects of less harmful impurities, good quality, and avoid coking process pollution

Inactive Publication Date: 2020-03-27
明拓集团铬业科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] Traditional smelting methods have problems such as high energy consumption and environmental pollution

Method used

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  • Process for producing electric furnace high-carbon ferromanganese by using coal-produced synthesis gas

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Embodiment 1

[0029] A process for producing high-carbon ferromanganese in an electric furnace from syngas from coal includes the following steps:

[0030] 1) Preparation of synthesis gas from coal and preparation of manganese iron ore pellets;

[0031] 2) After purifying and preheating the coal-based synthesis gas, it is sent to the reaction shaft furnace from below, and the manganese iron ore pellets are fed into the reaction shaft furnace from above, and the coal-based synthesis gas is in countercurrent contact with the descending manganese iron ore pellets to cause reduction Reaction to produce metalized pellets;

[0032] 3) The produced metalized pellets are sent to a submerged arc furnace through a heat conveying device for melting, flux and reducing agent are added and then melted, and the slag and iron are separated to obtain electric furnace high-carbon ferromanganese.

[0033] In step 1), the preparation of coal-based synthesis gas includes: using a coal mill to grind raw coal into fine p...

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Abstract

The invention provides a process for producing electric furnace high-carbon ferromanganese by using coal-produced synthesis gas. The process comprises the following steps: (1) preparing coal-producedsynthesis gas and preparing ferromanganese ore pellets; (2) purifying the coal-produced synthesis gas and preheating, then feeding the coal-produced synthesis gas into a reaction vertical furnace fromthe bottom, adding the ferromanganese ore pellets into the reaction vertical surface from the top, enabling the coal-produced synthesis gas to be in contact with the falling electric furnace high-carbon ferromanganese ore pellets and then carry out reduction reaction so as to generate metallized pellets; and (3) feeding the generated metallized pellets into an ore heating furnace, adding a fusingagent and a reducing agent, separating slag and iron, and then preparing electric furnace high-carbon ferromanganese. The process is entirely different from the traditional mainstream; coking coal with scarce resource is not used; the electricity consumption is reduced; the environment is improved; and the product quality is improved.

Description

Technical field [0001] The invention relates to an electric furnace high-carbon ferromanganese production process. Background technique [0002] "No manganese cannot make steel." Manganese is an essential element in the steel industry. Almost all steel contains a certain amount of manganese. Manganese can refine the grain of steel, improve the hardenability of steel, enhance the atmospheric corrosion resistance of steel, and improve the forgeability and rollability of steel. High-carbon ferromanganese for electric furnace is a deoxidizer, desulfurizer and alloy additive for steelmaking. [0003] In 1774, Gane in Sweden used pyrolusite and charcoal to heat it in a crucible and discovered manganese particles. In 1919, Dr. Carl William Soderberg of Norway invented a submerged arc furnace using self-cultivating electrodes. [0004] The traditional electric furnace high-carbon ferromanganese process has a history of one hundred years. Traditional electric furnace high-carbon ferromang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B13/00
CPCC21B13/0073C21B13/0006Y02P10/143
Inventor 陶静陶旭
Owner 明拓集团铬业科技有限公司
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