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Production method for separating high-speed steel electric furnace slag

A production method, high-speed steel technology, applied in the direction of wet separation, solid separation, magnetic separation, etc., can solve the problems of resource waste, environmental pollution, occupation of production and living land, etc.

Active Publication Date: 2012-07-25
张文钦
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  • Application Information

AI Technical Summary

Problems solved by technology

Over the years, the high-speed steel waste slag produced by steel mills has piled up like a mountain and has become a major source of dust. It not only invades production and living land, pollutes the environment, but also causes a great waste of resources.

Method used

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Embodiment Construction

[0019] A production method for separating slag after smelting of high-speed steel, comprising the following steps in sequence:

[0020] 1. Breaking and sorting: After the high-speed steel smelting slag is crushed with a crusher, it is classified and screened with a 600 Gauss strong magnetic field, and the slag that does not contain steel is selected and directly sent to a dry mill for grinding.

[0021] 2. Water milling treatment: put the slag with steel components into the water mill for rolling, the water volume enters the mill at a speed of 75 revolutions per minute, and the flow rate is 800kg / h: and the volume of the mill is 1:4 Abrasives: Abrasives are: 120mm steel balls account for 50%, 100mm steel balls account for 10%, 80mm steel balls account for 10%, 50mm steel balls account for 10%, 100×100mm square steel accounts for 5%, 70mm×70mm Square steel accounts for 5%, 100mm×50 mm bar-shaped steel accounts for 10%, and steel balls, square steel, bar-shaped steel and gri...

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Abstract

The invention discloses a method for separating high-speed steel electric furnace slag, which is characterized by comprising the following steps in sequence: 1) breaking and sorting; 2) performing watermill grinding; 3) washing; 4) carrying out primary strong magnetic separation; 5) carrying out secondary strong magnetic separation; 6) purifying; 7) separating by a method of specific gravity; 8) precipitating; 9) preparing a cement raw material; and 10) processing tailings. According to the invention, refined particles steel of which product grade can reach over 90% can be used as a scrap steel raw material, and can be directly fed into a converter for melting into a high-quality finished product special steel; iron refined powder of which the product grade can reach over 55% can be fed into the converter for melting into a high-quality finished product special steel; the produced waste slag micro powder can be used for manufacturing cement and baking-free bricks; and parts of particle slag is used for laying paint grounds of industrial factory buildings. The market demand is considerable. The water used in the technical production is precipitated to form a closed cycle for reutilization, so that zero emission is achieved.

Description

technical field [0001] The invention relates to utilization of high-speed steel smelting slag waste, in particular to a production method for separating high-speed steel smelting slag. Background technique [0002] With the continuous increase of my country's high-speed steel production capacity, the waste furnace slag also continues to increase. Slag powder contains valuable resources, which contain decomposed iron ore, coal ash and a small amount of slag, as well as oxide elements such as calcium, iron, silicon, magnesium, etc., which can be used to make cement and unburned bricks. Over the years, the high-speed steel waste slag produced by steel mills has piled up like a mountain and has become a major source of dust. It not only invades production and living land, pollutes the environment, but also causes a great waste of resources. Contents of the invention [0003] In view of the above deficiencies, the object of the present invention is to provide a production meth...

Claims

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Application Information

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IPC IPC(8): C22B1/00C21B3/04B03C1/02B03B7/00
CPCY02P10/20Y02W30/50
Inventor 张文钦
Owner 张文钦
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