Converter fluxing medium with LF refinery cinder as raw material and production method thereof

A technology for refining slag and its production method, which is applied in the field of converter flux and its production using LF refining slag as raw material, can solve problems such as difficulty in direct utilization and large differences in chemical composition of bulk materials, etc., to ensure smelting effect and reduce The effect of back drying and fast slag removal

Inactive Publication Date: 2009-06-24
ANSHAN IRON & STEEL GROUP CORPORATION +2
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In large-scale industrial production, it is impossible to directly put the high-temperature block materials into the converter, and the large difference in chemical composition of t...

Method used

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  • Converter fluxing medium with LF refinery cinder as raw material and production method thereof
  • Converter fluxing medium with LF refinery cinder as raw material and production method thereof
  • Converter fluxing medium with LF refinery cinder as raw material and production method thereof

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Embodiment Construction

[0017] In the present invention, two groups of LF furnace refining slag samples stored for 3 days (when the measured temperature is 45° C.) and 6 days (when the measured temperature is 30° C.) are respectively used as base samples, and are mixed, screened, and magnetized respectively. Part of the slag and iron particles were removed, and two groups of silt-like material samples with a uniform texture of less than 10 mm were obtained as raw materials for production.

[0018] The chemical compositions of the two groups of refining slags are shown in Table 1.

[0019] Table 1. Test refining slag temperature and chemical composition

[0020]

[0021] Take 2000Kg of each of the above two groups of samples and send them to the wheel mill respectively. The first group of samples is mixed with 256Kg of pure water, and the second group of samples is mixed with 252Kg of 0.3% CMC cellulose water emulsion. Table 2.

[0022] Table 2, ingredient composition

[0023]

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Abstract

The invention discloses a converter flux agent which uses LF refining slag as raw material and a production method thereof. The LF refining slag is sieved and magnetically separated after being mixed uniformly. Partial clinkers and iron particles are removed to obtain homogeneous silt-shaped material under 10mm as the production raw material. The material is mixed with water. The adding amount of water is 10%-15% of the weight of the raw material. After the material is mixed and rolled, part of the water in the raw material evaporates to achieve the compactness requirement, and the raw material is delivered to compaction equipment to be molded into an entity. After the forced drying or the air-curing, the strength is larger than or equal to 11MPa, and the water content is less than or equal to 1 percent. With using conditions of the converter flux agent and fast slag melting speed, the converter flux agent which uses the LF refining slag as the raw material and the production method thereof solve the problems of uneven chemical components and easy pulverization of original refining slag and reduces the phenomena of dry returning and lance slag sticking and can replace bauxite, save part of limestone, fully utilize waste slag, reduce environmental pollutions and lower the steelmaking production cost.

Description

technical field [0001] The invention relates to a converter flux and a production method thereof, in particular to a converter flux using LF refining slag as a raw material and a production method thereof. Background technique [0002] Refining slag is a by-product of the steelmaking process. As a kind of industrial waste slag, all steel mills mix it with ordinary converter steel slag, and dump it irregularly on the slag mountain. After it cools down, it is processed by magnetic separation, and the slag steel with a small proportion is selected from it. Tailings have not been able to find effective use of methods and means. Not only stacking occupies an area, but more importantly, it pollutes the environment extremely seriously. [0003] In order to develop circular economy and make effective use of this part of slag, Anshan Iron and Steel Company organized relevant technical personnel to conduct in-depth research and experiments on it, and measured the main chemical compo...

Claims

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Application Information

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IPC IPC(8): C21C5/00
Inventor 苏兴文张凯杨丽华郝树满杜刚王仁贵
Owner ANSHAN IRON & STEEL GROUP CORPORATION
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