Blending ore piling method and blending ore

A technology of mixing ore and heaping, which is applied in the technical and economic field of blast furnace smelting, can solve the problems of difficult to achieve high-efficiency ore formation, is not conducive to the use of flux, and short contact mixing time, so as to prolong the contact mixing time and improve the ore formation. Efficiency, the effect of stable physical and chemical indicators

Inactive Publication Date: 2019-07-19
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The contact and mixing time of flux, fuel and iron concentrate is short, and its distribution in the mixture is uneven, which is not conducive to the role of flux and fuel in sintering, and it is difficult to achieve efficient mineralization

Method used

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  • Blending ore piling method and blending ore
  • Blending ore piling method and blending ore
  • Blending ore piling method and blending ore

Examples

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Embodiment

[0036] The present invention is further illustrated below by means of examples, but the present invention is not limited to the scope of the examples. For the experimental methods not indicating specific conditions in the following examples, follow conventional methods and conditions. The raw materials used in the following examples are all commercially available.

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Abstract

The invention belongs to the technical and economic field of blast furnace smelting, and relates to a blending ore piling method and blending ore. The blending ore piling method comprises the steps that iron materials, flux and fuel are prepared in advance to form blending ore with the fixed matching ratio, and the blending ore is transferred into a secondary material field. According to the blending ore piling method, the iron materials, the flux and the fuel are prepared in advance to form the blending ore with the fixed matching ratio and uniform ingredients, contact and blending time of the flux, the fuel and ore powder is prolonged, the distribution state of the flux and the fuel in sintering of the concentrate powder is improved, and the sintered ore forming efficiency is improved.

Description

technical field [0001] The invention belongs to the technical and economic field of blast furnace smelting, and relates to a method for homogenizing ore and stacking and blending ore. Background technique [0002] As rich ore resources dwindle day by day, the iron and steel industry begins to develop lean ore resources. The lean ore needs to be ground to 200 mesh or even 325 mesh for beneficiation and enrichment to form iron concentrate. When the proportion of iron concentrate is higher than 80%, due to the large specific surface area of ​​the concentrate, the migration speed of capillary water is fast, and it is easy to form +8mm large balls during the granulation process. The amount of calcium ferrite generated during the large ball metallization process is small, and the ore-forming efficiency of sinter is low, which brings about adverse effects such as a decrease in sinter output, an increase in the proportion of 0-10mm particle size, an increase in the amount of return...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/16
CPCC22B1/16
Inventor 冀岗李强郭鑫吴明高长涛李国喜张政文郝永寿胡晶森徐慧明
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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