A kind of preparation method and device of oxidized pellet

A technology for oxidizing pellets and preparing devices, applied in the field of iron and steel metallurgy, can solve the problem of high equipment cost and achieve the effect of reducing equipment investment cost

Active Publication Date: 2022-05-24
明光瑞尔竞达科技股份有限公司
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Problems solved by technology

[0010] The embodiment of the present invention provides a method and device for preparing oxidized pellets to solve the problem in the prior art that the grates must be made of high-temperature-resistant special alloy steel and cause high equipment costs

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  • A kind of preparation method and device of oxidized pellet
  • A kind of preparation method and device of oxidized pellet
  • A kind of preparation method and device of oxidized pellet

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preparation example Construction

[0022] as Figure 1 As shown, embodiments of the present invention provides a method for preparing oxide pellets, comprising:

[0023] S101, the refractory regenerative ball is spread on the trolley with the belt roaster to form a refractory regenerative ball layer;

[0024] S102, the raw ball is laid on the refractory heat storage ball layer;

[0025] S103, the raw balls on the refractory heat storage sphere layer are roasted to form oxide pellets.

[0026] In the prior art, the oxide pellets as finished products are reused, and they are laid on the belt roaster as a base material and amyging material, which is used to protect the grate from high temperature damage, prevent powder clogging and bonding grates and other purposes. However, due to the limited ability of the oxide pellets to absorb heat, it is difficult to effectively reduce the temperature of the exhaust air after roasting, and the grates can still not be made of ordinary steel, and the strength of the oxide pellets w...

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Abstract

The embodiment of the present invention provides a method and device for preparing oxidized pellets, comprising: laying refractory heat storage balls on a trolley of a belt roaster to form a layer of refractory heat storage balls; laying raw pellets on the refractory heat storage on the ball layer; the raw balls on the refractory heat storage ball layer are roasted to generate oxidized pellets. Through this technical scheme, the refractory heat storage ball absorbs most of the remaining heat in the roasting process, and the temperature of the roasting waste air after passing through the refractory heat storage ball layer is greatly reduced, so that there is no need to use high temperature resistant special alloy steel to make the trolley Grates, greatly reducing equipment investment costs.

Description

Technical field [0001] The present invention relates to the field of iron and steel metallurgy technology, specifically to a oxide pellet preparation method and apparatus. Background [0002] In the steel and non-ferrous metal smelting industry, sintering and pellets are both methods of forming powder blocks, but their production processes and the basic principles of consolidation into blocks are very different, and the effect of smelting on blast furnaces also has its own characteristics. Among them, because the pellet process is cleaner and more environmentally friendly than the sintering process, it meets the requirements of clean production and ultra-low emission in the steel industry, so the increase in the amount of pellet ore in the blast furnace charge has been included in the development planning and implementation of major steel enterprises. The most commonly used pellet is the oxide pellet, and the preparation of oxide pellets includes two commonly used processes: the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/02
CPCC22B1/02
Inventor 王长春张世衡汪小龙梁晶晶
Owner 明光瑞尔竞达科技股份有限公司
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