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Sintering device and method for producing reduced iron

A manufacturing method and technology of reducing iron, applied in the direction of furnace control devices, furnaces, lighting and heating equipment, etc., to achieve the effect of reducing production costs and improving energy efficiency

Active Publication Date: 2018-11-27
浦项股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] On the other hand, in the prior art, the gas generated during the treatment of carbon-containing pellets is only used as a heat source for controlling the temperature of each treatment area

Method used

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  • Sintering device and method for producing reduced iron
  • Sintering device and method for producing reduced iron
  • Sintering device and method for producing reduced iron

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Embodiment Construction

[0035]Embodiments of the present invention will be described in detail below with reference to the drawings. However, the present invention is not limited to the following examples, and can be implemented in various forms. Among them, the purpose of providing the embodiments of the present invention is to fully disclose the present invention and fully explain the scope of the invention to those skilled in the art. The dimensions in the drawings may be exaggerated for explaining the embodiments, and the same reference numerals in the drawings denote the same elements.

[0036] The firing apparatus according to the embodiment of the present invention is a firing apparatus for firing raw materials to produce reduced iron. The raw material to be heat-treated in the firing apparatus is, for example, carbon-containing briquettes. Carbon-containing pellets can be produced, for example, by adding coal to iron ore powder, mixing them uniformly, and forming them into lumps at normal t...

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Abstract

The invention provides a burning apparatus and a manufacturing method of reduced iron. The burning apparatus comprises a burning furnace provided with a feed stock processing space, and a gas supply unit. The feed stock processing space is successively divided into a drying region, a heating region, a reduction region and a cooling region along the movement direction of feed stocks. The gas supply unit is used for connecting mutually different regions in the feed stock processing space. During the step of forming the interior atmosphere of the feed stock processing space by means of the gas supply unit, the exhaust gas in the reduction region is respectively supplied to the drying region and the heating region. At the same time, the exhaust gas in the heating region is supplied to the cooling region and the exhaust gas in the cooling region is supplied to the reduction region. Therefore, the temperature of the atmosphere and the concentration of oxygen in the feed stock processing space are controlled, so that the metallization rate of reduced iron in the burning furnace is improved.

Description

technical field [0001] The present invention relates to a burning apparatus and a manufacturing method of reduced iron (Burning apparatus and manufacturing method of reduced iron), in particular to a burning apparatus capable of increasing metallization of reduced iron, and the use of the burning apparatus The production method of reduced iron. Background technique [0002] Partially reduced iron is produced by firing and reducing carbon-containing pellets (carbon composite briquettes) produced from fine iron ore and coal as raw materials in a firing furnace. The process for making the above-mentioned carbonaceous pellets into partially reduced iron is currently carried out in various ways. For example, Korean Laid-Open Patent Publication No. 10-2013-0053089 discloses partially reduced iron used in a blast furnace, and a manufacturing method thereof. As disclosed in the aforementioned Laid-Open Patent Gazette, carbon-containing pellets are generally dried, preheated, reduc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/02F27D17/00
CPCF27B9/02F27B9/045F27B9/3005F27D17/004F27D2019/0031
Inventor 朴钟寅孙相汉王敏奎张东硕
Owner 浦项股份有限公司
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