Preparation method of steel slag mould sand

A technology of molding sand and steel slag, which is applied in the field of wear-resistant building materials production, can solve problems such as polluting the environment and occupying space, and achieves the effects of low metal iron content, good quality and high hardness

Inactive Publication Date: 2004-12-29
MCC BAOSTEEL TECH SERVICE
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

A large amount of steel slag is stacked, which not only occupies a large amount of space, but also pollutes the environment

Method used

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  • Preparation method of steel slag mould sand

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0015] figure 1 Shown is a flow chart of the production process of steel slag molding sand. The preparation method of the steel slag molding sand is to process the converter steel slag through water injection and quenching process, and then perform magnetic separation and crushing on the formed water-quenched steel slag or drum slag , Filtered.

[0016] The steel slag molding sand formed after the water-quenched steel slag or drum slag is processed is a molding sand with a grain size less than or equal to 5mm and with different specifications or meshes.

[0017] The specific operation methods for magnetic separation, crushing and screening of the formed water-quenched steel slag or drum slag are as follows:

[0018] (1) Take water-quenched steel slag or drum slag by coarse, medium and fine crushing methods, classify, sieve and magnetically s...

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Abstract

The present invention relates to the application of converter steel slag, and is especially the preparation process of steel slag molding sand. Steel slag is injected with water and quickly cooled to obtain water quenched steel slag or cylindrical slag, and the quenched steel slag or cylindrical slag is circularly crushed and sieved to for molding sand with granularity not greater than 5 mm and in different size. The molding sand has low free calcium oxide content, low metal iron content, low pulverization rate and other features, and may be used to replace quartz sand widely used as fine aggregate, sand blast, water filtering material, etc.

Description

technical field [0001] The invention belongs to the field of wear-resistant building material production, relates to the application of converter steel slag, and relates to a method for preparing steel slag molding sand by using converter steel slag. Background technique [0002] For the molten high-temperature liquid and semi-liquid converter steel slag produced in steelmaking, the water-quenched steel slag or drum slag formed after cooling by water spraying and water injection is mainly composed of CaO and Fe. 2 o 3 , SiO 2 It is a new type of inorganic mineral composed of minerals, most of which have a particle size distribution of 0-50mm. Practice has shown that free calcium oxide can be further dissolved by using waste heat, watering, and stockpiling. However, so far, these piles of converter steel slag are only piled up, and some of them are used for low-value utilization such as raw materials in cement plants, and have not been developed and utilized on a large sca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B5/00C21B3/04
CPCY02W30/50
Inventor 金强徐炳华苏剑郭江浩
Owner MCC BAOSTEEL TECH SERVICE
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