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Steelmaking slag separation method

A technology of converter steel slag and separation method, which is applied in the field of metallurgy, can solve problems such as waste of iron resources, and achieve the effect of improving utilization rate

Inactive Publication Date: 2015-01-28
PANZHIHUA GANGCHENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The tailing slag of converter steel slag contains metallic iron. For the treatment of converter steel slag, the traditional technical means is to simply use simple and inefficient means such as magnets to recover, which will waste the iron resources of converter steel slag.
At present, there is no more efficient method for separating and recovering iron from converter steel slag in the market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The converter steel slag after 30 days of heat stuffiness is sent into the silo, fed into the hopper roller sieve with a distance of 250mm for sieving, and the sieves larger than 250mm are smashed to obtain the sieve concentrate (MFe=76%), and the sieve The material is conveyed by a belt, and enters the double-layer flat screen with an upper layer of 60mm and a lower layer of 10mm for screening. The upper layer is a rubber round hole, and the lower layer is a steel wire hole screen. Three specifications of materials are obtained: 60-250mm, 10-60mm , 0-10mm, and iron removal by semi-permanent magnetic rollers in turn, 60-250mm and 10-60mm magnetic separation materials enter the self-grinding machine together for selection and processing to obtain fine materials (MFe=78%), and the rest are separated The 60-250mm and 10-60mm tailings are used for blast furnace flux, and the 0-10mm tailings (MFe=0.5%) and magnetic separation materials (MFe=8%) are obtained after magnetic sep...

Embodiment 2

[0030] Send the converter steel slag after 40 days of hot stuffiness into the open silo, feed it into the silo roller sieve with a distance of 250mm for sieving, and smash the sieves larger than 220mm to obtain the sieve concentrate (MFe=80%), The undersieve is conveyed by a belt, and enters the double-layer flat screen with an upper layer of 100mm and a lower layer of 10mm for screening. The upper layer is a rubber round hole, and the lower layer is a steel wire hole screen. Three specifications of materials are obtained: 100-220mm, 10 -100mm, 0-10mm, and iron removal by semi-permanent magnetic rollers in turn, 100-220mm and 10-100mm magnetically separated materials enter the self-grinding machine for selection and processing to obtain fine materials (MFe=72%), and the remaining The 100-220mm and 10-100mm tailings are used for blast furnace flux, and the 0-10mm tailings (MFe=0.5%) and magnetic separation materials (MFe=5%) are obtained after magnetic separation, which are used...

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Abstract

The invention relates to the metallurgy field, and in particular relates to a steelmaking slag separation method, aiming at solving a technical problem of providing a steelmaking slag separation method which can realize separation and recycling of steelmaking slag with high efficiency. The steelmaking slag separation method is characterized by comprising the following steps: a, conducting hot-simmering treatment on steelmaking slag; b, putting the steelmaking slag to a stock bin and sieving the steelmaking slag; c, obtaining over-sized materials and under-sized materials after being sieved by a bin roller screen, wherein the under-sized materials are sieved by a two-layer flat screen; d, obtaining materials in three specifications, and sequentially processing the materials in three specifications through a semi-permanent magnetic roller; and e, obtaining concentrate, tailing, magnetic separation material and tailing powder through the semi-permanent magnetic roller. The separation method disclosed by the invention realizes deep separation of the steelmaking slag and sufficiently recovers various components in the steelmaking slag, thus improving a utilization rate of the steelmaking slag; and the method disclosed by the invention is especially suitable for a separation process for metallic iron in the steelmaking slag.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a method for separating converter steel slag. Background technique [0002] The tailings of converter steel slag contain metallic iron. For the treatment of converter steel slag, the traditional technical means are to simply use simple and inefficient means such as magnets to recover, which will waste the iron resources of converter steel slag. At present, there is no more efficient method for separating and recovering iron from converter steel slag in the market. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a converter steel slag separation method capable of efficiently separating and recycling the converter steel slag. [0004] The technical solution adopted by the present invention to solve the technical problems is: a converter steel slag separation method, comprising the following steps: [0005] a. Put the convert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/04
CPCC21B3/04Y02W30/50
Inventor 范泽宇李贤书钱强
Owner PANZHIHUA GANGCHENG GROUP
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