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Slag adhesion resistant material for slag tank and preparation method of slag adhesion resistant material

An anti-sticking slag and slag tank technology, applied in the field of new materials, can solve the problems of high cost and unsatisfactory effect, and achieve the effects of low cost, widening use channels and high gelling activity

Active Publication Date: 2018-09-07
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High cost and unsatisfactory effect
[0006] At present, all types of anti-sticking slag materials for slag tanks use refractory materials as the main raw material, which is costly and unsatisfactory.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An anti-sticking slag material for a slag tank, expressed in weight percentage, the raw material composition of the anti-sticking slag material for a slag tank is: 90% of slag fine powder with a particle size of 400 mesh, 8.5% of limestone powder with a particle size of 200 mesh, three Sodium polyphosphate 0.2%, sodium hexametaphosphate 0.3% and sodium carboxymethylcellulose 1%. The specific surface area of ​​the slag powder used is controlled at 300-500m 2 / kg, density greater than 2.8g / cm 3 .

[0025] A method for preparing an anti-sticking slag material for a slag tank, specifically:

[0026] Mix and add the above-mentioned raw materials in the formula quantity, the added water is 45% of the total weight of the above-mentioned raw materials, stir evenly with a mixer, and stir for 10 minutes to obtain the product. Adjust the slurry density to 1.79g / cm 3 , the viscosity is 2736mPa·s, and the refractoriness is 1401℃.

[0027] The slag tank prepared by the above pro...

Embodiment 2

[0029] An anti-sticking slag material for a slag tank, expressed in weight percentage, the raw material composition of the anti-sticking slag material for a slag tank is: 88% of slag fine powder with a particle size of 400 mesh, 8.3% of limestone powder with a particle size of 200 mesh, and 8.3% of limestone powder with a particle size of 2% of 200 mesh graphite powder, 0.4% of sodium tripolyphosphate, 0.3% of sodium hexametaphosphate and 1% of sodium carboxymethylcellulose. The specific surface area of ​​the slag powder used is controlled at 300-500m 2 / kg, density greater than 2.8g / cm 3 .

[0030] A method for preparing an anti-sticking slag material for a slag tank, specifically:

[0031] Mix the above-mentioned raw materials in the formula amount, add water to be 50% of the total weight, stir evenly with a mixer, and stir for 10 minutes to obtain the product. Adjust the slurry density to 1.97g / cm 3 , the viscosity is 2846mPa·s, and the refractoriness is 1410℃.

[0032...

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Abstract

The invention provides a slag adhesion resistant material for a slag tank and a preparation method of the slag adhesion resistant material. The slag adhesion resistant material is prepared from the following raw materials in percentage by weight: 70-90wt% of superfine slag powder, 6-30wt% of additive and 1-3wt% of binder (total 100%). The preparation method comprises the following steps of mixingthe superfine slag powder, the additive and the binder with formula amounts, adding water, and performing uniform stirring and mixing to obtain the slag adhesion resistant material. Compared with theprior art, the slag adhesion resistant material provided by the invention is low in cost by adopting blast furnace slag as a main raw material, is ground with the granularity being 300-400 meshes, isuniformly mixed with the additive and the binder to control the viscosity of the slurry, is strong in adhesion with the slag tank, short in solidification time, high in refractoriness and good in slagadhesion resistance effect, can realize a target of overturning the tank for more than or equal to 3 times after spraying the slag tank for one time. Meanwhile, the use of the superfine slag powder is broadened and the resource additional value is improved.

Description

technical field [0001] The invention belongs to the field of new materials and specifically designs an anti-sticking slag material for a slag tank and a preparation method thereof. Background technique [0002] During the production process of iron and steel smelting, due to the splashing and adhesion of high-temperature melt or the solidification and bonding under natural conditions, iron, steel or slag stick to the high-temperature melt or the wall surface in contact with the high-temperature melt, and the equipment sticks to slag. Finally, it is difficult to clean up, which consumes a lot of manpower and material resources and affects production efficiency. The steel slag tank is in contact with high-temperature liquid slag and residual molten steel during the slag receiving process, and it is prone to severe slag sticking on the inner wall of the slag tank, resulting in shutdown. It is difficult to clean the sticky slag, which affects production efficiency. At present, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/3208C04B2235/425C04B2235/447C04B2235/449
Inventor 王洛饶磊刘自民李帮平王俊北樊明宇桂满城张耀辉
Owner MAANSHAN IRON & STEEL CO LTD
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