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Magnesium composite desulfurization slag state regulator and magnesium composite desulfurization slag adjustment method

A slag state adjustment and desulfurization slag technology, applied in the field of iron and steel metallurgy, can solve the problems of high cost, increased labor cost, complex composition, etc., and achieve the effect of reducing desulfurization cost, good effect and simple composition

Active Publication Date: 2017-03-15
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] From the existing literature and invention patents, the composition of the slagging agent used in the desulfurization process is complicated, and its cost is high, and the slag adjusting agent is manually fed, which increases the labor cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The preparation method of the magnesium composite desulfurization slag state regulator of the present invention is conventional mixing in the field, for example: mixing and grinding aluminum ash powder and soda ash powder evenly in proportion to obtain the magnesium composite desulfurization slag state regulator.

[0027] The invention also provides a magnesium composite desulfurization and slag adjustment method, which does not need manual addition of desulfurization regulators and eliminates heavy manual labor.

[0028]The magnesium composite desulfurization slag adjustment method of the present invention comprises the following steps: a, performing fine grinding and surface passivation on the magnesium composite desulfurization slag state regulator together with active lime and passivating agent to obtain slag state adjustment type passivated lime; b 1. Put the slag state-adjusting passivation lime into the lime silo of the magnesium composite desulfurization system, ...

Embodiment 1

[0041] Mix and grind 60% of aluminum ash powder and 40% of soda ash powder by weight evenly to obtain the magnesium composite desulfurization slag state regulator. The composition of the obtained magnesium composite desulfurization slag state regulator includes: S 0.20%, P 0.20%, CaO 20%, Na 2 O 20%, Al 2 o 3 50%.

[0042] Send the prepared magnesium composite desulfurization regulator together with the crushed small pieces of active lime and the common passivator 201 methyl silicone oil into the ray mill for fine grinding and surface passivation to produce a particle size of 0.1mm The following slag state adjustment type passivation lime. Wherein, according to the mass ratio, magnesium composite desulfurization slag state regulator: active lime: passivator = 5:75:0.1. The slag-state-adjusted passivated lime is transported by tank truck, and is driven into the lime silo of the magnesium composite desulfurization system by pipeline gas transportation.

[0043] After all th...

Embodiment 2

[0046] Mix and grind 80% of aluminum ash powder and 20% of soda ash powder by weight evenly to obtain the magnesium composite desulfurization slag state regulator. The composition of the obtained magnesium composite desulfurization slag state regulator includes: S 0.20%, P 0.20%, CaO 30%, Na 2 O 10%, Al 2 o 3 60%.

[0047] Send the prepared magnesium composite desulfurization regulator together with the crushed small pieces of active lime and the commonly used passivating agent hydroxy silicone oil into the ray mill for fine grinding and surface passivation to produce particles with a particle size of less than 0.1mm. Slag state adjustment passivation lime. Wherein, according to the mass ratio, the magnesium composite desulfurization slag state regulator:active lime:passivator=25:95:0.3. The slag-state-adjusted passivated lime is transported by tank truck, and is driven into the lime silo of the magnesium composite desulfurization system by pipeline gas transportation.

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Abstract

The invention relates to a magnesium compound desulfuration slag slag-state regulator and a magnesium compound desulfuration slag-regulation method and belongs to the field of ferrous metallurgy. The technical problem is solved by the magnesium compound desulfuration slag slag-state regulator. The magnesium compound desulfuration slag slag-state regulator is made of the following components, by weight percentage, 60%-80% of aluminum ash powder and 20%-40% of sodium carbonate powders. The magnesium compound desulfuration slag slag-state regulator is simple in composition, simple and easy to do in preparation technology, good in desulfuration effect and slag-regulation effect, capable of reducing molten iron or vanadium extraction half-steel desulfuration deslagging iron losses, therefore, the desulfuration cost is reduced significantly, the waste aluminum ashes generated from aluminum smelting industries are utilized effectively, and the obvious environmental and economic effects are achieved. According to the magnesium compound desulfuration slag-regulation method, the desulfuration slag-state regulator is added to passivated lime, an original lime stock bin and an original lime injection pot in the desulfuration technology are utilized, the slag regulation is performed directly in the desulfuration process unlike all present slag-regulation methods of manually adding desulfuration regulators, and the heavy manual labor is eliminated.

Description

technical field [0001] The invention relates to a magnesium composite desulfurization slag state regulator and a magnesium composite desulfurization slag adjustment method, belonging to the field of iron and steel metallurgy. Background technique [0002] As an economical and effective means of desulfurization, hot metal pretreatment has been widely used in the iron and steel industry. Desulfurization outside the furnace plays an important role in optimizing the smelting process, improving the quality of steel, developing high-quality steel grades, and improving the comprehensive benefits of metallurgy, and has become an indispensable process in iron and steel metallurgy. [0003] Magnesium composite desulfurization process is one of the commonly used pretreatment processes outside the molten iron furnace. This process has high and stable desulfurization efficiency for molten iron or semi-steel, so it is adopted by most iron and steel enterprises, but there are "thin slag s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C1/02C21C7/064
Inventor 戈文荪陈怀杰陈炼卓钧杨森祥黄正华蒋龙奎朱鹏张家利黄东平董克平李龙
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP