Iron ore powder mixed material suitable for HISMELT smelting reduction

A technology of iron ore powder mixing, which is applied in the field of iron ore powder mixing, to achieve the effects of reducing raw material costs, high metal yield, and high production capacity

Inactive Publication Date: 2018-12-18
上海慧安科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the HISMELT process has greater selectivity and lower raw material costs, but even so, not all fine ore can achieve the goal of efficient smelting by the HISMELT process, and the choice of fine ore will still affect the iron yield, smelting rhythm, etc. have a greater impact

Method used

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  • Iron ore powder mixed material suitable for HISMELT smelting reduction
  • Iron ore powder mixed material suitable for HISMELT smelting reduction
  • Iron ore powder mixed material suitable for HISMELT smelting reduction

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Embodiment 1

[0032] The iron ore powder mixture composition and weight percentage of the present embodiment are as shown in Table 1, and the chemical indexes of various iron ores in the mixture formula are as shown in Table 2, and various iron ores are obtained through the use of intelligent mixing materials. The processing equipment carries out batching and mixing production to obtain iron ore powder mixing. The chemical indicators of each chemical element, compound and particle size in the iron ore powder mixture obtained in this embodiment are shown in Table 3.

[0033] The iron ore powder mixing product produced in this embodiment has been applied in an enterprise in Shandong, and the iron ore powder mixing is used to produce molten iron using the HISMELT smelting reduction process. TFe: 61.5%, SiO 2 : 3.8%, Al 2 o 3 : 2.5%, S: 0.02%, P: 0.011%, the proportion of particle size less than 0.15mm is 31.5%, melting temperature 1245 ℃) the production index after application is compared, ...

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Abstract

The invention discloses an iron ore powder mixed material suitable for HISMELT smelting reduction. The iron ore powder mixed material suitable for the HISMELT smelting reduction comprises the following components of, by weight, 25-35% of Basica powder, 5-15% of Brazil coarse powder, 15-25% of Australian western powder, 15-25% of Sierra Leoneore and 15-25% of Jimblebar powder. The chemical indexesof the iron ore powder mixed material comprises the following components of, by weight, 61-62% of TFe, 3.5-4.3% of SiO2, 2.5-3.2% of Al2O3, less than or equal to 0.05% of S, less than or equal to 0.12% of P, and less than or equal to 22% of iron ore powder with a particle size less than or equal to 0.15 mm. A blended ore specially used for smelting reduction production of the iron ore powder is provided, the production requirements of HISMELT smelting reduction process are met while reducing the raw material cost of the iron ore powder, the charging grade and the iron yield are improved, the slag amount and ash amount are reduced, and the purposes of high yield and high metal yield are achieved.

Description

technical field [0001] The invention belongs to the technical field of ironmaking raw material preparation and smelting reduction, and in particular relates to an iron ore powder mixture suitable for HISMELT smelting reduction. Background technique [0002] The HISMELT smelting reduction process is a short-process ironmaking process. In this process, the iron ore powder is first finely ground, dried, and then sprayed into the reduction furnace for reduction ironmaking to produce pig iron products that meet certain requirements. HISMELT smelting reduction production has certain advantages in the selection of raw materials. Its requirements for the composition and particle size of fine ore are much lower than that of COREX process. The HISMELT process requires that the grade is not lower than 60%, and the furnace particle size is not greater than 3mm. Most iron ore powders on the market can basically meet the requirements of the HISMELT process after being finely ground. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B13/00
CPCC21B13/0013
Inventor 张展雷李士才门朝辉姜尚森姜代楠张添伦
Owner 上海慧安科技股份有限公司
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