Treatment method for tail slurry of blast furnace dust

A blast furnace dust removal and treatment method technology, which is applied to chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve problems such as high labor intensity and poor treatment effect, and achieve relief Labor intensity, high separation efficiency, good separation effect

Active Publication Date: 2012-12-19
广西柳钢环保股份有限公司
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a treatment method for blast furnace du

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  • Treatment method for tail slurry of blast furnace dust
  • Treatment method for tail slurry of blast furnace dust

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Embodiment Construction

[0015] The processing method of the blast furnace dust removal ash tailings includes the following steps: firstly pump the tailings into the sand-water separator, separate the coarse slag and low-sludge sewage, and collect the coarse slag; the box height H and width W of the sand-water separator The best ratio is 2:1, such as figure 1 , figure 2 Shown; the low-sludge sewage is sent to the mud water separator, and 0.008% flocculant of the weight of the low-sludge sewage is dripped into the mud-water separator to make the dispersed fine particles form flocs containing metal, and the mud-water separator disk is adsorbed and separated. The flocs are separated into water, and the flocs gather to form fine slag, which is collected; the collected coarse slag and fine slag are tailings products. The separated water enters the storage tank for backup.

[0016] The treatment method of blast furnace dust removal ash tailings can process 25-30 tons of tailings products per hour, and on...

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Abstract

The invention discloses a treatment method for tail slurry of blast furnace dust, and relates to the field of metallurgical technologies. The method comprises the following steps of: pumping the tail slurry into a grit-water splitter so as to separate out coarse slags and low mud sewage, and collecting the coarse slags; feeding the low mud sewage into a mud-water separator, and dripping a flocculant into the mud-water separator, so that scattered fine particles form metal-containing flocculates; adsorbing and separating out the flocculates by using a magnetic disc of the mud-water separator, separating out water, gathering the flocculates so as to form fine slags, and collecting the fine slags; and feeding the separated water into a reservoir for standby. Compared with the prior art, 25-30 tons of tail mud products can be treated per hour, and the treatment method can be operated just by a person, thereby reducing the labor intensity of workers; and the method is high in separation efficiency and good in separation effect, the separated clean water can be recycled, and an effect of wastewater zero-discharging can be achieved.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a process method for reprocessing the tailing slurry produced in the iron-making production process and containing iron powder and coke in the flue gas dust treatment process. Background technique [0002] At present, the treatment method for blast furnace dust is generally to add water to the blast furnace dust to make slurry, and let the slurry go through the first and second flotation to separate high-grade coke powder; The slurry containing more iron from the flotation machine is pumped into the first and second spiral chutes, and after gravity separation and magnetic separation, high-grade iron powder is separated respectively; and after the above multi-stage separation, the The tailings obtained from the remaining blast furnace dedusting ash tailings after pressure filtration are also raw materials for high-quality external combustion bricks. The usual treatment method ...

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Application Information

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IPC IPC(8): C02F9/12C02F1/52C02F103/18
Inventor 莫明娇潘智斌张庆忠龙顺红卢山周永新刘舜郑文辉
Owner 广西柳钢环保股份有限公司
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