Reducing chamber and heating chamber multilayer obturation alternation and fusion gasification combination metal smelting method

A heating chamber and metal technology, applied in the field of iron smelting, can solve the problems of small scale of single equipment, low carbon content in molten iron, high combustion temperature, etc., to solve the problem of short life of furnace lining, reduce energy consumption, and reduce specific surface area Effect

Inactive Publication Date: 2008-07-09
邹明
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Problems solved by technology

The blast furnace ironmaking method is currently the most widely used ironmaking method with the largest monomer scale, the highest labor production efficiency, the lowest cost, and the most mature technology, but it also encounters the following unsolvable problems: environmental pollution caused by the coke oven and sintering process Seriously, the social environmental protection pressure of enterprises using blast furnaces continues to increase. Insufficient coking coal resources lead to rising coke prices. The gradual shortage of high-quality iron ore resources leads to an increase in the use of ores with high alumina content that is not conducive to the fluidity of slag. And lead to a decline in various economic and technical indicators
The Hismelt method uses the high-speed "iron bath reduction" method to successfully avoid the formation of ferrous oxide an...

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  • Reducing chamber and heating chamber multilayer obturation alternation and fusion gasification combination metal smelting method
  • Reducing chamber and heating chamber multilayer obturation alternation and fusion gasification combination metal smelting method
  • Reducing chamber and heating chamber multilayer obturation alternation and fusion gasification combination metal smelting method

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Embodiment Construction

[0037] In Figure 1, the ratio of combustion-supporting air to gas and other fuels must maintain a certain excess air coefficient, and select appropriate burners according to the nature of the fuel. The number and distribution of burners must meet the requirements of uniform temperature in the heating chamber. Except for the fuel with high impurity content, other fuels and combustion air should be preheated, and the heat of preheating comes from the combustion exhaust gas in the heating chamber. All the walls between the heating chamber and the reduction chamber are generally built with 100-300mm silica bricks to ensure good airtightness.

[0038] In Figure 2, the flux and metal materials can be put in from above the molten iron, the coal powder should generally be blown into the molten iron, and the oxygen must be blown into the molten iron. The upper part of the gasifier is a closed structure for gas recovery. The main body of the furnace body generally adopts a fixed structu...

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Abstract

The invention provides a novel metal oxide smelting method, namely, reduction chamber and heating chamber multi-layer sealing space and melting gasification combined smelting method, which aims to solve the problems that coking coal and high-quality iron ore are lacked in blast furnaces and problems existing in various non blast furnaces smelting method. The method is mainly used in smelting iron, which does not need procedures such as coke and sintering and palletizing and the like which pollute, and can smelt powder ore and fine ore, and can use cheap coal and other fuel, and can use cheap iron ore with high harmful element content. The cost to manufacture the invention is evidently lower than the current blast furnaces and non blast furnaces smelting method. The method of smelting metal oxide is divided into two procedures, the first is directly reducing and the second is melting gasification.

Description

Technical field [0001] The invention relates to a new technology for the reduction of iron and other metal oxides, which is applied in the field of metal smelting, especially iron smelting. Background technique [0002] At present, there are mainly two methods of smelting metallic iron from iron ore as raw materials: blast furnace smelting and non-blast furnace smelting: [0003] 1. Blast furnace ironmaking method [0004] Blast furnace is a gas-solid-liquid countercurrent reduction reaction device, which can directly generate molten liquid iron. Since gas-solid-liquid countercurrent requires strict gas permeability requirements for raw materials, coking and sintering are required as raw materials to form agglomerates and improve metallurgical properties. Good fluidity of the slag is required. The blast furnace ironmaking method is currently the most widely used ironmaking method with the largest monomer scale, the highest labor production efficiency, the lowest cost, and ...

Claims

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Application Information

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IPC IPC(8): C21B13/14
Inventor 邹明
Owner 邹明
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