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Method for manufacturing high strength green ball block by coal-based direct reduction and device therefor

A technology for manufacturing equipment and manufacturing methods, which is applied in the field of manufacturing method equipment, can solve problems such as the impossibility of meeting the actual requirements of industrial production, and achieve the effects of flexible methods, strong practicability, and scientific concepts

Active Publication Date: 2009-09-09
SICHUAN LOMON MINING & METALLURGY
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Problems solved by technology

[0007] Industrial practice has proved that in order to effectively solve the problem of increasing the density and strength of the briquette, it is impossible to achieve the industrial goal only by improving one material, or one or two process links in the overall process, or only by one of the devices. actual production requirements

Method used

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  • Method for manufacturing high strength green ball block by coal-based direct reduction and device therefor
  • Method for manufacturing high strength green ball block by coal-based direct reduction and device therefor
  • Method for manufacturing high strength green ball block by coal-based direct reduction and device therefor

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Embodiment Construction

[0018] The preferred implementation of the method for manufacturing high-strength direct reduction green pellets of the present invention will be described in detail below with reference to the accompanying drawings. The technical solution of the present invention is not limited to the specific description of the embodiments.

[0019] There are many factors affecting the compacting process, and these factors are often interrelated, mutually promoting and restricting each other. The inventor has carefully studied the relationship between various factors in the influencing factors of the compacting process, and skillfully comprehensively used those factors that affect the compacting process. Agglomerate properties promote each other or affect the same factors. On the basis of successful repeated tests, the present invention provides a high-strength direct reduction green pellet manufacturing method, which mainly includes ① accurate batching and feeding; ② uniform mixing ;③Approp...

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Abstract

The invention relates to a method for manufacturing green ball blocks by coal-based direct reduction and a device therefor, which is suitable to be used for a raw material ball pressing section by the coal-based direct reduction in the steel and iron metallurgical industry. The method adopts accurate weight batching, high mixing evenness degree, proper mixture prepressing, suitable feeding, suitable returning charge adding, suitable pressure to a roller, and suitable briquette size, acquires the suitable molding time by frequency control in the required yield, obviously improves the strength of the green ball blocks, reduces the generation of powder materials, improves the material yield and the productivity of a reducing furnace, reduces the flue gas dust removal load of the reducing furnace and the like, and has obvious economic benefits and industrialized popularization value .

Description

technical field [0001] The invention relates to a method for manufacturing direct reduction composite balls, which is suitable for the preparation process of coal-based direct reduction raw materials in the iron and steel metallurgical industry, and can be used for ordinary iron ore, dust containing various metals and coal or coke powder to press high-strength composite production Ball block factory. The invention also includes an apparatus for carrying out the manufacturing method described. Background technique [0002] At present, coal-based direct reduction composite ball agglomeration at home and abroad generally adopts artificial agglomeration, which is to mix iron-containing ore powder or dust containing various useful metals, coal powder or coke powder with a binder, and then artificially agglomerate. piece. There are two traditional artificial agglomeration methods. The first artificial agglomeration method is to use a disc pelletizer to make agglomerates, add wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/14C22B1/244
Inventor 李家权范先国秦廷许胡晓
Owner SICHUAN LOMON MINING & METALLURGY
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