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Method for efficiently recovering and reselecting steel slag

A high-efficiency technology for steel slag, applied in the field of high-efficiency recycling and re-selection of steel slag, can solve the problems of insufficient economic benefits of comprehensive utilization of steel slag, environmental pollution, waste of resources, etc., to ensure product quality indicators and protect the ecological environment. , the effect of reducing production costs and energy consumption

Active Publication Date: 2012-09-26
武汉市天沭科技发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Regardless of the current method of using steel slag, it only uses part of it, and the remaining waste will pollute the environment. At the same time, the economic benefits of comprehensive utilization of steel slag cannot be fully utilized.
caused a waste of resources

Method used

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  • Method for efficiently recovering and reselecting steel slag

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Embodiment 1

[0027] A method for efficient recovery and reselection of steel slag, the steps are:

[0028] The following describes the technical solutions in the embodiments of the present invention clearly and completely in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0029] A method for efficient recovery and reselection of steel slag, the specific process is:

[0030] Step A, crush the magnetic separation, and use a lifting electromagnet to separate the iron from the steel slag in the yard. Other steel slag directly enters the crusher for crushing. The crushed steel slag is subjected to layered magnetic separation through a belt convey...

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Abstract

The invention discloses a method for efficiently recovering and reselecting steel slag, comprising the following steps of: A, smashing and magnetically selecting: selecting iron in steel slag in a stock dump by a lifting electromagnet, directly charging the steel slag into a smasher to be smashed, and magnetically selecting the smashed steel slag by a rubber belt conveyor and a permanent magnetic iron remover in a layering way; B, smashing and magnetically selecting again: magnetically selecting the treated steel slag by the rubber belt conveyor of a head wheel belt permanent magnetic tumbling cylinder and the permanent magnetic iron remover in a layering way; C, extruding and smashing the steel slag into fine powder by a roller type grinding circulating system; D, selecting the iron powder with refine grain diameter by a dry type powder selector; and E, grinding the fine powder steel slag which is separated by the roller type grinding circulating system and a steel slag selecting and recovering system by a ball grinder system. The method is simple and easy, and convenient to operate, so that when the iron is selected, the steel slag low-heat concrete which accords with the national standard requirement can be produced by the steel slag. The production cost and the energy consumption can be reduced, the land occupancy can be reduced, the ecological environment can be protected, and the good economic benefit, social benefit and environmental benefit can be obtained.

Description

Technical field [0001] The invention belongs to the technical field of efficient comprehensive utilization and treatment of industrial solid waste and steel slag, and specifically relates to a method for efficient recovery and reselection of steel slag. The method can select iron with different particle sizes in steel slag, especially fine particles in steel slag powder. Diameter iron, and pulverize the remaining steel slag into steel slag low-heat cement or specific surface area of ​​420m 2 The finished product of steel slag powder above / kg can effectively improve the activity of steel slag powder, completely realize zero emission, and solve the pollution of steel slag to the environment. Background technique [0002] Steel slag is a kind of solid waste that is inevitably produced in the steelmaking process. It is usually treated as garbage, and its utilization value is very low. Many steel companies tend to be troubled by the large amount of steel slag produced. my country pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00C21B3/04
CPCY02P10/20Y02W30/50
Inventor 田键
Owner 武汉市天沭科技发展有限公司
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