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Method for improving the direct yield of nickelous oxide added in stainless steel smelting

A technology of nickelous oxide and nickelous oxide powder is applied in the field of stainless steel smelting, which can solve the problem that nickelous oxide powder should not be directly added to a high-temperature metallurgical furnace, and achieve the effects of high strength, simple process and sufficient sources.

Active Publication Date: 2017-02-01
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for improving the direct yield of nickelous oxide added in stainless steel smelting, to solve the problem that nickelous oxide powder should not be directly added to the high-temperature metallurgical furnace

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] A method for improving the direct yield of nickelous oxide added in stainless steel smelting, the nickelous oxide powder is processed through the following steps: taking water, industrial starch, caustic soda, heating the water to 45-55°C, putting it into a reaction tank, Add caustic soda to water to make a solution, slowly put industrial starch into the reaction tank, and stir while pouring. When the starch solution is uniform, add caustic soda solution evenly into the reaction tank, and stir while adding. After a certain period of time, a transparent paste is obtained. Liquid, the addition of water, industrial starch, caustic soda is the water of 89%, the industrial starch of 10%, the caustic soda of 1.0%; The nickelous oxide powder of 90% by weight percentage, the transparent paste liquid of 10% is in mixing mill The internal mixing and grinding are uniform, and the pellets are cold-pressed by a cold-press forming machine; the mass of the pellets is converted into the...

Embodiment 2

[0012] A method for improving the direct yield of nickelous oxide added in stainless steel smelting, the nickelous oxide powder is processed through the following steps: taking water, industrial starch, caustic soda, heating the water to 45-55°C, putting it into a reaction tank, Add caustic soda to water to make a solution, slowly put industrial starch into the reaction tank, and stir while pouring. When the starch solution is uniform, add caustic soda solution evenly into the reaction tank, and stir while adding. After a certain period of time, a transparent paste is obtained. Liquid, the addition of water, industrial starch, caustic soda is the water of 91.16%, the industrial starch of 8%, the caustic soda of 0.84%; The nickelous oxide powder of 89% by weight percentage, the transparent paste liquid of 11% is in the mixing mill The internal mixing and grinding are uniform, and the pellets are cold-pressed by a cold-press forming machine; the mass of the pellets is converted i...

Embodiment 3

[0016] A method for improving the direct yield of nickelous oxide added in stainless steel smelting, the nickelous oxide powder is processed through the following steps: taking water, industrial starch, caustic soda, heating the water to 45-55°C, putting it into a reaction tank, Add caustic soda to water to make a solution, slowly put industrial starch into the reaction tank, and stir while pouring. When the starch solution is uniform, add caustic soda solution evenly into the reaction tank, and stir while adding. After a certain period of time, a transparent paste is obtained. The addition of water, industrial starch, and caustic soda is 91.3% of water, 8% of industrial starch, and 0.7% of caustic soda; 85% by weight of nickel oxide powder, 15% of transparent paste in the mixing mill The internal mixing and grinding are uniform, and the pellets are cold-pressed by a cold-press forming machine; the mass of the pellets is converted into the mass of the pellets according to the a...

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Abstract

The invention discloses a method for increasing the direct recovery rate of nickel protoxide added in stainless steel smelting. Nickel protoxide powder is treated in the following steps that water, industrial starch and caustic soda are obtained; the water is heated to 45 DEG C to 55 DEG C and placed in a retort, and the water is added to the caustic soda to prepare a solution; the industrial starch is slowly fed into the retort while stirring is conducted; after the starch solution is uniform, the caustic soda solution is evenly added into the retort while stirring is conducted; after a certain period of time, transparent paste liquid is prepared, wherein 85%-95% of the water, 6%-10% of the industrial starch and 0.7%-1.0% of the caustic soda are added; by weight, 85%-90% of the nickel protoxide powder and 10%-15% of the transparent paste liquid are evenly mixed and milled in a mixing and milling machine and cold-pressed into pellets through a cold-pressing and molding machine; and the amount of nickel protoxide required during smelting is converted into the mass of the pellets, and the pellets are added into a smelting furnace. The compressive strength of the pellets is larger than 600 N. The method has the advantages that the utilization rate of the nickel protoxide is increased, the raw materials which are used are non-toxic, and follow-up smelting is not affected.

Description

technical field [0001] The invention belongs to the field of stainless steel smelting and relates to a method for improving the direct yield of nickelous oxide added in stainless steel smelting. Background technique [0002] Nickel oxide is mainly used to smelt stainless steel, and it is a new product that replaces electrolytic nickel to produce stainless steel. If the nickelous oxide powder product is directly added to the high-temperature metallurgical furnace for smelting stainless steel, due to the fine particle size and low density of the nickelous oxide powder, it is easy to cause adverse effects such as high smoke and dust rate, low direct metal recovery rate, and poor operating environment. Contents of the invention [0003] The object of the present invention is to provide a method for improving the direct yield of nickelous oxide added in stainless steel smelting, and to solve the problem that nickelous oxide powder should not be directly added to a high-temperat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/04
Inventor 杨志强李娟马晓东张晗邓民晖欧晓建樊昱张鹏董政武卢苏君马永峰芦越刚
Owner JINCHUAN GROUP LIMITED