Efficient separation and recycling method for RO phase in steel slag

A technology for separation and recovery of steel slag, applied in cement production, etc., can solve the problems of limited mixing ratio, steel slag limitation, poor RO phase extraction effect, etc., achieve efficient separation and recovery, improve processing efficiency, and improve the effect of magnetic separation

Inactive Publication Date: 2018-02-23
山西双良国环科技有限公司
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Problems solved by technology

If it is directly used in cement production, because the RO phase content in the steel slag is still above 20%, the mixing ratio is severely limited; after grinding and sorting, it is greatly affected by the particle size of the steel slag powder. When the particle size is large, RO The phase extraction effect is very poor, a large amount of RO phase still remains in the steel slag particl

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  • Efficient separation and recycling method for RO phase in steel slag

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Embodiment Construction

[0026] As a preferred embodiment of the present invention

[0027] A method for efficiently separating and recovering RO phase in steel slag, characterized in that: comprising the following steps:

[0028] Step 1) Steel slag crushing: steel slag is used as the processing object, and it is crushed and screened, and the fine powder with a particle size of less than 100 mesh enters the next step of processing, and the larger particle size is returned to the crushing machine for further crushing. Step 2) Charge loading: Send the steel slag powder into the charge loading device, and in the device, a large amount of same-sex charges are generated through high-voltage discharge, and combined with the micro-powder particles, so that the micro-powder particles are loaded with same-sex charges and generate electrostatic repulsion between each other , to achieve ultra-dispersion treatment, and the treated steel slag powder enters the next step of treatment. Step 3) Separating the RO pha...

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Abstract

The invention discloses an efficient separation and recycling method for an RO phase in steel slag. The method comprises the following steps: 1) crushing the steel slag; 2) loading electric charges; 3) carrying out RO phase separation; and 4) carrying out separation and recycling. The method disclosed by the invention has the advantages that the steel slag is taken as a treating object, firstly the steel slag is crushed and screened, particle size is less than 100 meshes, and then steel slag micro powder passes through an electric charge loading device, so that fine powder particles carry thesame electric charge and produce electrostatic repulsion mutually, and ultra-dispersed treatment is realized; then air is blasted, so that the fine powder particles pass through an electromagnetic separator in a suspension state, the RO phase is separated and removed, residual materials are recycled, utilization rate of the steel slag is improved, and the method disclosed by the invention is significant to comprehensive utilization of resources and environmental protection.

Description

technical field [0001] The invention relates to a method for efficiently separating and recovering RO phases in steel slag, and belongs to the technical field of metallurgical resource reuse. Background technique [0002] In recent years, my country's crude steel output is huge, and the amount of steel slag produced is about 100 million tons, but the comprehensive utilization rate of steel slag is only about 10%. Due to the low comprehensive utilization rate of steel slag, a large amount of steel slag is piled up around iron and steel production enterprises, which not only affects the normal production of iron and steel enterprises, but also occupies cultivated land, causing serious environmental pollution. [0003] The main components of steel slag are similar to Portland cement clinker, including β-C2S, C3S, calcium aluminum ferrite, calcium ferrite, etc., so steel slag has gelling activity. At present, steel slag is mainly used as cement raw material, cement admixture or...

Claims

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Application Information

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IPC IPC(8): C04B7/147
CPCC04B7/147Y02P40/10
Inventor 高成伟李超李虎森于建波
Owner 山西双良国环科技有限公司
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