Process for producing steel slag iron fine powder

A production process, a technology for iron powder, applied in the field of smelting waste treatment, can solve the problems of high cost, difficult to achieve, complex process, etc., and achieve the effect of high grade, good product quality, and no environmental pollution

Inactive Publication Date: 2006-11-08
济南鲁新新型建材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, many different processes such as magnetic separation have been used in this field to select iron powder from steel slag, but some processes are more complicated and costly, and some processing methods are difficult to achieve so that steel slag can be used as a building material after treatment. Standards for materials used, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] Embodiments of the invention:

[0008] The production process of the steel slag and iron fine powder of the present invention is to dry the steel slag with an iron content of about 30%, a particle size of 0-12mm, and a water content of about 10% through a rotary drum dryer, so that the water content of the steel slag is less than 1.5%. , When drying, the feed rate of the tumble dryer is controlled within 30t / h, and the temperature is 450-750°C to avoid physical and chemical changes during the drying process and reduce the difficulty of the next process. The dried steel slag is sent to the electromagnetic pre-magnet for pre-magnetization to achieve the purpose of increasing the specific magnetization coefficient of the steel slag powder. The magnetized steel slag is then sent to the pre-homogenization warehouse for homogenization and storage, and then dry pre-grinding. All kinds of ball milling equipment are available, preferably rod mill, to separate the granular steel ...

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PUM

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Abstract

The process of producing fine iron powder with steel slag includes the following steps: stoving steel slag in a drum type drier to water content less than 1.5%, pre-magnetizing steel slag in an electromagnetic pre-magnetizing device, pre-homogenizing, dry pulverizing, separating steel slag powder of 3 mm below size, wind separating steel slag powder of 3 mm below size into two parts including steel slag powder of 180 mesh over size and steel slag powder of 180 mesh below size, magnetically separating the steel slag powder of 180 mesh over size in a permanent magnetic separator, demagnetizing the separated steel slag powder, grinding the demagnetized steel slag powder to 180 mesh below size, and separating steel slag fine iron powder from superfine steel slag powder. The present invention has low production cost and no environmental pollution.

Description

technical field [0001] The invention relates to the treatment of smelting waste, and is a production process of steel slag and iron fine powder. Background technique [0002] Steel slag is a kind of waste material, because it contains about 30% iron, in order to reduce waste, many enterprises use water washing method to select iron after purchasing steel slag. In recent years, many different processes such as magnetic separation have been used in this field to select iron powder from steel slag, but some processes are more complicated and costly, and some processing methods are difficult to achieve so that steel slag can be used as a building material after treatment. Standards for materials used, etc. Contents of the invention [0003] The purpose of the present invention is to provide a production process of steel slag iron concentrate powder, which can be used as building materials after steel slag is iron-selected, the production process cost is low, and the environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/14B03C1/02
Inventor 罗时政刘富增张玉华刘福运亓立峰孙功谭景武赵爱新刘学明宋青伟张永利陈宝刚张树阳韩明年
Owner 济南鲁新新型建材股份有限公司
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