Deoxidizing alloying agent and preparation method thereof
A technology of deoxidation alloy and aluminum electrolysis, which is applied in the field of deoxidation alloy agent and its preparation, can solve the problem of not being able to improve the fluidity and adsorption of slag at the same time, and achieve the effects of being beneficial to floating removal, low energy consumption for smelting, and high deoxidation rate
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[0022] The preparation method of the deoxidizing alloying agent of the present invention includes the following steps:
[0023] Step 1: Crushing, grinding and sieving the aluminum electrolytic waste lining bricks to make the particle size below 5mm;
[0024] Step 2: Put the aluminum electrolysis waste lining bricks obtained in Step 1 in a tunnel kiln, shaft furnace or grate rotary kiln, and dry them below 300℃. The drying time is when the moisture content of the lining bricks is less than the total weight of the lining. 1% of to determine;
[0025] After the lining bricks are cooled to room temperature, they are packaged and sealed with a double-layer film to obtain a deoxidizing alloy agent;
[0026] When in use, the deoxidizing alloying agent of the present invention is added to the electric furnace in an amount of 6-8g / kg (that is, adding 6-8g of the deoxidizing alloying agent to 1kg of molten steel).
Example Embodiment
[0028] Example 1
[0029] This embodiment provides a deoxidizing alloy agent, which is prepared from aluminum electrolytic waste lining bricks.
[0030] The preparation method of the deoxidizing alloying agent of this embodiment is carried out according to the following steps:
[0031] Step 1: Crushing, grinding and sieving the aluminum electrolytic waste lining bricks to make the particle size below 5mm;
[0032] Step 2: Dry the aluminum electrolytic waste lining bricks obtained in Step 1 in a tunnel kiln, shaft furnace or chain grate rotary kiln at 150°C for 30 minutes; ensure that the moisture content of the lining bricks is less than the total weight of the lining 1%; the dried material balls are packaged and sealed with double-layer film.
[0033] When in use, add 300g of deoxidizing alloying agent to a 50kg electric furnace;
[0034] The measurement shows that when other parameters are constant, in the slag system with a basicity of 3.2, the melting time of the added deoxidizing a...
Example Embodiment
[0035] Example 2:
[0036] The deoxidizing alloying agent of this embodiment and its preparation method are the same as those of embodiment 1;
[0037] When in use, add 320g of deoxidizing alloying agent to a 50kg electric furnace;
[0038] The measurement shows that under the condition that other parameters are constant, the melting time of the added deoxidizing alloying agent in the molten steel is shortened by 1.8 min in the slag system with a basicity of 3.2, and the oxygen content in the molten steel is reduced by 24%.
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