Unlock instant, AI-driven research and patent intelligence for your innovation.

Process for purifying vertically ground magnetic discharged substances of granulated blast-furnace slag

A granulated blast furnace slag and magnetic technology, applied in magnetic separation, chemical instruments and methods, solid separation, etc., can solve problems such as waste, low iron purity, and inability to directly recycle, and achieve great economic and social benefits , reduce dust pollution, reduce the effect of product loss

Active Publication Date: 2012-07-04
鞍钢绿色资源科技有限公司
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the external circulation system of the granulated blast furnace slag micropowder production line adopted in the prior art all adopts a first-level magnetic separation system, and the magnetic effluent produced therefrom generally has a low iron content and can only reach 10%-11% in purity. Direct recycling, resulting in a lot of waste

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process for purifying vertically ground magnetic discharged substances of granulated blast-furnace slag
  • Process for purifying vertically ground magnetic discharged substances of granulated blast-furnace slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0019] See figure 1 , magnetic effluent purification process of granulated blast furnace slag vertical mill, this method can realize multiple magnetic separations of magnetic effluents and materials separated by magnetic separation. The specific steps are as follows:

[0020] 1) A two-stage magnetic separation system is installed in the external circulation circuit of the mill. The first-stage magnetic separation system includes the first-stage vibrating feeder 1 and the first-stage iron remover 2, which are successively installed in the bucket elevator of the external circulation circuit of the mill 14. Between the discharge position of the machine 5 and the mill 14, the coarse-grained materials from the mill 14 pass through the chute 7, the bucket elevator 5, and the first-stage vibrating feeder 1 into the first-stage iron remover 2 for magneti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a process for purifying vertically ground magnetic discharged substances of granulated blast-furnace slag. By the process, the magnetic discharge substances and materials obtained through magnetic separation can be subjected to magnetic separation for multiple times by two stages of vibratory feeders, two stages of iron removers, and specified material conveying pipelines. Compared with the prior art, the process has the advantages that: by a multiple magnetic separation method, the original iron rate of the discharged substances is improved from 10-11 percent to 80-95 percent, and the discharged substances are returned to a steel mill for high value-added utilization. Meanwhile, powder obtained after magnetic separation is returned to a mill system, the dust pollution in a field is reduced, zero release is realized, and the process has great economic and social benefit.

Description

technical field [0001] The invention relates to the field of powder-making with granulated blast furnace slag, in particular to a process for purifying magnetic effluents from a vertical mill of granulated blast furnace slag. Background technique [0002] Granulated blast furnace slag is formed by quenching the waste slag discharged during the ironmaking process, commonly known as "water slag". A small part exists in the form of lumps, and most of them exist in the form of granules. In the vertical grinding process of blast furnace slag, a small amount of massive iron contained in the slag is magnetically separated by the belt-type iron separator before it enters the grinding process, and most of the granular iron cannot be removed by the belt-type iron remover because it is contained in the raw materials. Magnetic separation, so the external circulation system of the mill in the vertical grinding process is equipped with a drum type iron remover, which separates the granul...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/06B22F9/04B03C1/02
CPCY02W30/50
Inventor 苏兴文马小明袁荣刚李斌谢军胡广普
Owner 鞍钢绿色资源科技有限公司