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Sintering method and sintering equipment of iron ore

A sintering method and technology of sintering equipment are applied in the field of iron ore sintering method and sintering equipment, which can solve problems such as increasing production cost, and achieve the effects of accelerating sintering speed, improving production quality and improving fuel utilization rate.

Inactive Publication Date: 2013-09-25
PANGANG GRP PANZHIHUA STEEL & VANADIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, intensifying granulation and increasing the particle size of the mixture will inevitably increase the production cost

Method used

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Embodiment Construction

[0014] The invention will be described in more detail below with reference to exemplary embodiments which, however, are provided for illustrative purposes only and not for restrictive purposes. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0015] According to one embodiment of the present invention, a method for sintering iron ore is provided, which includes the following steps: batching-mixing, mixing iron ore, flux, and fuel to form a mixture after batching, and then mixing The material is spread into the sintering machine trolley through the cloth; and the igniter is used to ignite and carry out draft sintering, wherein, 5 minutes to 10 minutes after the ignition, start to spray steam to the surface of the sintering ore.

[0016] By injecting steam at an appropriate time after igniting the mixture, the steam can undergo physical and chemical reacti...

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Abstract

The invention discloses a sintering method and sintering equipment of an iron ore. The sintering method comprises the following steps of: mixing and blending: mixing the iron ore, a fusing agent and fuel to prepare sintered ore granules; then paving the sintered ore granules in a pallet through a cloth; igniting by utilizing a lighter for sintering, and starting to spray steam to the surface of a sintered material after ignition for 5 minutes to 10 minutes, or spraying water or a mixture of steam and the water, wherein the usage amount of the water or the mixture of the steam and the water is the same as the usage amount of independently-sprayed steam. According to the invention, the steam plays a strengthening role on the process of sintering reaction, the yield is increased by accelerating sintering speed, the solid combustion consumption is saved by enhancing the utilization ratio of sintered ore FeO and the fuel, and the air permeation is improved and the yield and quality are increased and enhanced by eliminating an overwet layer.

Description

technical field [0001] The invention relates to an iron ore sintering method and sintering equipment, more specifically, to an iron ore sintering method and sintering equipment capable of improving the uniformity of heat and mass transfer speed in the sintering process. Background technique [0002] In the iron and steel metallurgy industry, in order to improve the production efficiency of the blast furnace, it is usually necessary to agglomerate the iron ore powder after mineral processing. Among various agglomeration methods, iron ore sintering is one of the most important methods for iron ore agglomeration. During the sintering process, the iron ore after beneficiation, flux (limestone, quicklime, slaked lime, dolomite, magnesite, etc.) and fuel (coke powder and anthracite) can be mixed according to the required ratio, and mixed with water to make granular Then spread the mixture on the sintering machine trolley, and sinter it into blocks by igniting and ventilating. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/16
Inventor 蒋大均宋剑何木光杜斯宏吴亚明周章金张远祥
Owner PANGANG GRP PANZHIHUA STEEL & VANADIUM
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