Method for improving proportion of steel slag in blended ore

A technology of mixing ore and steel slag, which is applied in the field of steelmaking, can solve the problems of low utilization rate of steel slag, loss and waste of iron elements, etc., achieve the effect of saving ingredients cost, improving mixing degree, and solving the effect of steel slag accumulation and resource occupation

Pending Publication Date: 2022-01-14
SICHUAN DESHENG GRP VANADIUM & TITANIUM CO LTD
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Problems solved by technology

[0004] In view of this, aiming at the deficiencies of the above-mentioned prior art, the present invention provides a method for increasing the ratio of st

Method used

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  • Method for improving proportion of steel slag in blended ore
  • Method for improving proportion of steel slag in blended ore
  • Method for improving proportion of steel slag in blended ore

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Example Embodiment

[0016] In order to better understand the technical solution of the present invention, the present invention will be further described below in connection with the specific embodiments.

[0017] The steel slag used in the following examples is produced by the application author of the invention, and the specific chemistry of chemical composition is:

[0018] SiO 2 %

[0019] The ingredients used in the mixing mine production are shown in the following table:

[0020]

[0021]

[0022] In theory, the steel slag ratio increased by 1%, which reduces the proportional powder or vanadium powder ratio 1%. From the price price of single iron price, select the most optimal Tahe and vanadium powder as comparison, steel slag ratio increased by 1%, minimum mixed ore ingredients can be reduced: (586.6-200) / 100≈3.9 yuan / ton.

[0023] First, improve the implementation of mixing mine steel slag ratio:

[0024] 2020.06.02-2020.07.02, the overall ingredient structure of the mixing mi...

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Abstract

The invention discloses a method for improving the proportion of steel slag in blended ore. The method comprises the following four steps: (1), crushing the steel slag until the granularity of the crushed steel slag is less than or equal to 10 mm; (2), carrying out magnetic separation treatment on the steel slag, wherein the total iron content TFe of the steel slag after magnetic separation is greater than or equal to 18% and less than or equal to 23%; (3), and adjusting a batching structure participating in uniform ore blending according to the requirements of different types of steel for steelmaking smelting on the P content of molten iron; and (4), making a thick material layer and forming a low machine speed in the sintering mode of the uniformly mixed ore. The method solves the problems of resource occupation caused by steel slag accumulation and loss and waste of an iron element in steel slag takeout due to a low steel slag utilization rate.

Description

technical field [0001] The invention relates to a method for increasing the ratio of steel slag in a mixed ore, belonging to the technical field of steelmaking. Background technique [0002] As the main raw material for sintering production, the quality of mixed ore is closely related to the stability of sintering and blast furnace production. The production of mixed ore is to accurately mix different types of iron raw materials that meet the requirements in a certain proportion according to the requirements of blast furnace for sintering. Continuous and even distribution piles up to form a large pile of mixed ore. Steel slag is the iron-containing waste produced in the steelmaking process, which can be used as a smelting solvent to participate in the mixing of ore ingredients and be recycled. However, in the actual production of mixed ore, due to the uneven particle size of steel slag, the presence of bright iron, large fluctuations in chemical composition, and high burnin...

Claims

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Application Information

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IPC IPC(8): C22B1/248C22B1/16B03C1/30B02C23/08
CPCC22B1/248C22B1/16B02C23/08B03C1/30Y02P10/20
Inventor 陆财天张成立向成功达建超高丽姗
Owner SICHUAN DESHENG GRP VANADIUM & TITANIUM CO LTD
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