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A kind of method that utilizes silicon carbide micropowder tailings to prepare deoxidation ball

A silicon carbide micropowder and silicon carbide technology, which is applied in the field of silicon carbide deoxidized ball preparation, can solve the problems of unqualified physical and chemical indicators of a ball making machine, damage to the composition of balls in the ball making machine, affecting the periodicity of the ball making machine, etc. The effect of good longitude, high hardness and high production efficiency

Active Publication Date: 2018-08-28
PINGDINGSHAN YICHENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the preparation of silicon carbide deoxidized balls, the sticky material at the bottom of the pelletizing machine is the biggest problem in pelletizing. It not only affects the periodicity of the pelletizing machine, but also causes the material in the pelletizing When the material reaches a certain level of about 200mm, the composition of the ball in the pelletizing machine will be seriously damaged

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of method utilizing silicon carbide micropowder tailing to prepare deoxidation ball, comprises the following steps:

[0025] Step 1. Transport the silicon carbide micro-powder tailings with SiC purity ≥ 98.0 from the silo to the pelletizing machine. The interior of the pelletizing machine is connected to the glue pump, and the adhesive is sprayed into the pelletizing machine through the rubber pump. Each pelletizing machine The feeding port of the machine is located 5cm above the center of the pelletizing machine, and the feeding port is 30cm away from the bottom center of the pelletizing machine; the glue spraying position is 10cm above the feeding port, and the nozzle and the material layer form an angle of 90 degrees; The adhesive is a mixture of water glass and polyvinyl acetate emulsion, and the weight ratio is water glass: polyvinyl acetate emulsion=1:0.13-0.15;

[0026] Step 2: Start 1#, 2# pelletizers and glue pumps, control the speed of pelletizers to 40...

Embodiment 2

[0032] A kind of method utilizing silicon carbide micropowder tailing to prepare deoxidation ball, comprises the following steps:

[0033] Step 1. Transport the silicon carbide micro-powder tailings with SiC purity ≥ 98.0 from the silo to the pelletizing machine. The interior of the pelletizing machine is connected to the glue pump, and the adhesive is sprayed into the pelletizing machine through the rubber pump. Each pelletizing machine The feeding port of the machine is located 5cm above the center of the pelletizing machine, and the feeding port is 30cm away from the bottom center of the pelletizing machine; the glue spraying position is 10cm above the feeding port, and the nozzle and the material layer form an angle of 90 degrees; The adhesive is a mixture of water glass and polyvinyl acetate emulsion, and the weight ratio is water glass: polyvinyl acetate emulsion=1:0.13-0.15;

[0034] Step 2: Start 1#, 2#, 3# pelletizers and glue pumps, control the speed of pelletizers t...

Embodiment 3

[0038] A kind of method utilizing silicon carbide micropowder tailing to prepare deoxidation ball, comprises the following steps:

[0039] Step 1. Transport the silicon carbide micro-powder tailings with SiC purity ≥ 98.0 from the silo to the pelletizing machine. The interior of the pelletizing machine is connected to the glue pump, and the adhesive is sprayed into the pelletizing machine through the rubber pump. Each pelletizing machine The feeding port of the machine is located 5cm above the center of the pelletizing machine, and the feeding port is 30cm away from the bottom center of the pelletizing machine; the glue spraying position is 10cm above the feeding port, and the nozzle and the material layer form an angle of 90 degrees; The adhesive is a mixture of water glass and polyvinyl acetate emulsion, and the weight ratio is water glass: polyvinyl acetate emulsion=1:0.13-0.15;

[0040] Step 2: Start 1#, 2# pelletizers and glue pumps, control the speed of pelletizers to 40...

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Abstract

The invention discloses a method for preparing deoxidizing balls by utilizing carborundum micro powder tailing. The method comprises the following steps of firstly, transporting the carborundum micro powder tailing from a stock bin to a pelletizer, wherein the inner part of the pelletizer is connected with a glue pump, and sprinkling an adhesive to the inner part of the pelletizer by the glue pump; then starting the pelletizer and the glue pump, controlling the rotating speed of the pelletizer to be 40-50r / min, controlling the discharging rate to be 20-30kg / min, controlling the glue yield of the glue pump to be 0.2-0.3kg / min, and manufacturing 1# deoxidizing balls from the carborundum tailing in the pelletizer; when deoxidizing balls of which the sphere diameters are greater than those of the 1# deoxidizing balls are required to be manufactured, continuing performing pelletizing on the 1# deoxidizing balls, so as to obtain the carborundum deoxidizing balls having the required diameters; and finally, drying the obtained carborundum deoxidizing balls, and after the drying is completed, carborundum deoxidizing ball products are obtained. The deoxidizing balls manufactured by the method disclosed by the invention have the characteristics of being uniform in particle size, good in particle round precision, high in compression resistance capacity and the like, the producing efficiency is high, and in the process of manufacturing, the tailing is not adhered in the pelletizer.

Description

technical field [0001] The invention belongs to the field of preparation of silicon carbide deoxidation balls, and in particular relates to a method for preparing deoxidation balls by using silicon carbide micropowder tailings. Background technique [0002] Silicon carbide deoxidation ball is a high-quality steel-making agent obtained by using silicon carbide tailings as raw material and processed into balls. It has the function of maintaining the quality of molten steel and removing harmful impurities in molten steel. It has been verified that the use of silicon carbide deoxidizing balls as a deoxidizer is beneficial to maintaining the casting temperature of molten steel, reducing the dosage compared with ferrosilicon products, improving the quality of the output slab, and reducing the unit cost compared with ferrosilicon. At present, iron and steel enterprises in related developed countries have widely used silicon carbide deoxidation balls instead of ferrosilicon for deox...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/06
CPCC21C7/06
Inventor 孙毅夏军杨正宏刘创田铁帅吕本会
Owner PINGDINGSHAN YICHENG NEW MATERIAL
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