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Comprehensive treatment method of blast furnace dedusting ash

A blast furnace dust removal and comprehensive treatment technology, which is applied in the field of waste treatment, can solve the problems of high cost and large amount of flotation reagents, and achieve the effects of improving recovery rate, reducing ironmaking cost, and reducing consumption

Inactive Publication Date: 2010-02-24
山东泰山焦化有限公司
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Problems solved by technology

In addition, this process has the disadvantages of large amount of flotation agent and high cost

Method used

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  • Comprehensive treatment method of blast furnace dedusting ash

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Embodiment Construction

[0018] A comprehensive treatment method for blast furnace dust removal, comprising the following process steps:

[0019] (1) Blast furnace dust falls from the receiving bin through the pendulum feeder onto the belt of the belt conveyor. A water-adding hopper is provided at the end of the belt conveyor. After adding water to the blast furnace dust, (as long as the water and ash can Just flow) take water as the carrier and enter the wet ball mill in a spiral way for ball milling. (The wet ball mill can not only complete the slurry mixing function, but also grind the hard shell formed by the iron-containing material of the dust removal ash, coal powder, ash, and acid-base flux to improve the quality of the final product.) Blast furnace dust removal in the ball mill After being fully mixed and finely ground, it overflows the ball mill and enters the discharge chute.

[0020] (2) The blast furnace dedusting ash slurry after ball milling naturally flows into the first-stage magneti...

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Abstract

The invention discloses a comprehensive treatment method of blast furnace dedusting ash, belonging to the technical field of the waste treatment. The method comprises the following steps: adding waterin blast furnace dedusting ash for mixing, performing secondary magnetic separation, performing flotation, in the tailings treatment using a spiral chute to separate iron refined powder and carbon refined powder, screening to recycle the carbon refined powder in the wastewater which is obtained in the step of spiral chute ion-removing and performing filter pressing to the obtained wastewater forrecycling. The method can greatly increase the selection yield and grade of the iron refined powder and carbon refined powder, can also avoid to produce new pollution, protect the environment and recycle waste material.

Description

technical field [0001] The invention relates to a treatment method for blast furnace dust removal, in particular to a method for separating iron fine powder, carbon fine powder and tailings from blast furnace dust removal dust through an optimized process, and belongs to the technical field of waste treatment. Background technique [0002] Pollutants are unavoidably emitted during the steel production process, mainly dust. Among them, blast furnace dust removal accounts for a large amount, and is generally discarded. Because dust removal dust contains a large amount of iron fine powder and carbon fine powder, it cannot be recycled directly. After being discarded, it will not only pollute the environment, but also waste a lot of waste. valuable resource. With the development of science and technology, in recent years, a few enterprises have adopted the combination of flotation, spiral separation and magnetic separation in mineral processing technology to extract iron concent...

Claims

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Application Information

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IPC IPC(8): C21B3/04B03B7/00
CPCY02P10/20Y02W30/50
Inventor 陈培敦王修胜周光武吕学星李曰镇杨逢庭李晓云王振国
Owner 山东泰山焦化有限公司
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