Method for manufacturing stainless steel dedusting ash pressure ball

A manufacturing method and technology of stainless steel, which is applied in the field of manufacturing stainless steel dust-removing ash pellets, can solve the problems of poor strength, large amount of smoke, and broken pellets, so as to reduce the pulverization rate, reduce the amount of smoke, and increase the pressure. The effect of ball strength

Inactive Publication Date: 2011-10-12
SHANXI TAIGANG STAINLESS STEEL CO LTD
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Problems solved by technology

But, because the moisture in the pressure ball that existing stainless steel dedusting ash pressure ball manufacture method manufactures is bigger, when heating in the electric furnace, cause the pressure ball to break because of water evaporation; pellet rupture
Therefore, when used in electric furnace steelmaking, due to the different raw materials used, there will be a large amount of smoke and serious pollution during the smelting process

Method used

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Experimental program
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Effect test

Embodiment

[0049] The embodiment of the manufacture method of this stainless steel dedusting ash pressure ball is following steps in sequence:

[0050] 1. Ingredients

[0051] Mix the stainless steel dedusting ash and cement according to the following mass ratio to form a mixture evenly:

[0052] Stainless steel dust 10 parts cement 1.0 parts

[0053] Stainless steel dust is nickel stainless dust, the required particle size is 1mm at most, and more than 90% of which are less than 0.5mm, the cement label is 325#; mix until no cement can be seen.

[0054] 2. Add water and organic binder

[0055] Then the MgCl of mass parts 0.25 2 Make glue with 0.15 parts by mass of polyvinyl alcohol and 1.5 parts by mass of water, spray the glue on the mixture, and mix evenly;

[0056] 3. Extrusion

[0057] Transport the mixture with glue to the briquetting machine, and press it into a mass with a maximum size of 40mm; when producing briquettes, adjust the speed of the briquetting machine at 12 rpm, an...

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PUM

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Abstract

The invention relates to a method for manufacturing a stainless steel dedusting ash pressure ball, sequentially comprising the following steps of: 1, mixing the following raw materials including 10 parts of stainless steel dedusting ash and 0.8-1.2 parts of cement into a mixed material; 2, adding water and organic binder, mixing 0.2-0.3 part by weight of MgC12, 0.1-0.2 part by weight of polyvinyl alcohol and 1.3-1.8 parts by weight of water into glue, spraying the glue on the mixed material and uniformly mixing; 3, extruding and forming, conveying the mixed material in which the glue is added to a ball pressing machine, pressing into a block with the maximum outline size of 30-45 mm; 4, naturally drying and maintaining the extruded and formed block, wherein the intensity is 2100+ / -500N per one ball; and 5, drying the maintained ball in a dried ventilation region for 5+ / -1days, wherein after being dried, the water content of the ball is not more than 2.0%. When the pressure ball manufactured by using the method for manufacturing the stainless steel dedusting ash pressure ball is used for making steel in an electric furnace, the smoke level is reduced; and the environmental pollution is reduced.

Description

technical field [0001] The invention relates to a method for manufacturing a stainless steel dedusting ball. Background technique [0002] In recent years, with the rapid development of my country's stainless steel industry, more and more associated resources are produced, such as iron scale and dust. If these resources are not well utilized, it will not only waste a lot of resources, but also cause great pollution to the environment. Therefore, research on how to utilize these resources has become an urgent subject to be solved. Many factories adopt the method of first pelletizing the dedusting ash, and then smelting and reducing it in an electric furnace. The final product is molten iron containing chromium and nickel. But, because the moisture in the pressure ball that existing stainless steel dedusting ash pressure ball manufacture method manufactures is bigger, when heating in the electric furnace, cause the pressure ball to break because of water evaporation; The pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/14C22B1/242
Inventor 李建军史永林赵海泉仪桂兰叶文成
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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