Production method of metal chromium
A production method, the technology of metal chromium, which is applied in the field of electroluminothermic production of metal chromium, can solve the problems of low conversion rate of metal chromium, high power consumption, increased aluminum powder consumption, etc., to improve the value of by-products and stabilize reaction conditions , Improve the effect of product quality
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Embodiment 1
[0030] A method for producing metallic chromium, comprising the steps of:
[0031] Step 1, uniformly mixing 2.56 tons of chromium trioxide with 0.9 tons of aluminum powder to obtain a mixed material;
[0032] Step 2, inserting the electrode into the smelting furnace, and then putting 0.69 tons of mixed material into the smelting furnace;
[0033] Step 3, electrifying and heating the electrode, so that the temperature in the smelting furnace rises rapidly and carries out the aluminothermic reduction reaction;
[0034] Step 4: After the smelting furnace reaches the designated smelting temperature of 1900°C, put the remaining 2.77 tons of mixed materials into the smelting furnace for thermite reduction reaction, stabilize the smelting temperature by electrodes at 1900°C-1950°C and keep the temperature for 30 minutes to ensure complete reaction;
[0035] Step 5. Power off the electrode, stop heating, and pull out the electrode from the smelting furnace;
[0036] Step 6, cooling ...
Embodiment 2
[0038] A method for producing metallic chromium, comprising the steps of:
[0039] Step 1, uniformly mixing 3.7 tons of chromium trioxide with 1.3 tons of aluminum powder to obtain a mixed material;
[0040] Step 2. Insert the electrode into the smelting furnace, and then put 1.5 tons of mixed material into the smelting furnace;
[0041] Step 3, electrifying and heating the electrode, so that the temperature in the smelting furnace rises rapidly and carries out the aluminothermic reduction reaction;
[0042] Step 4. After the smelting furnace reaches the specified smelting temperature of 2000°C, put the remaining 3.5 tons of mixed materials into the smelting furnace for thermite reduction reaction, stabilize the smelting temperature by electrodes at 1950°C-2000°C and keep the temperature for 20 minutes to ensure complete reaction;
[0043] Step 5. Power off the electrode, stop heating, and pull out the electrode from the smelting furnace;
[0044] Step 6, cooling the smeltin...
Embodiment 3
[0046] A method for producing metallic chromium, comprising the steps of:
[0047] Step 1, uniformly mixing 4.2 tons of chromium trioxide with 1.47 tons of aluminum powder to obtain a mixed material;
[0048] Step 2. Insert the electrode into the smelting furnace, and then put 1.4 tons of mixed material into the smelting furnace;
[0049] Step 3, electrifying and heating the electrode, so that the temperature in the smelting furnace rises rapidly and carries out the aluminothermic reduction reaction;
[0050] Step 4: After the smelting furnace reaches the specified smelting temperature of 2000°C, put the remaining 4.27 tons of mixed materials into the smelting furnace for thermite reduction reaction, stabilize the smelting temperature by electrodes at 2000°C-2100°C and keep the temperature for 80 minutes to ensure complete reaction;
[0051] Step 5. Power off the electrode, stop heating, and pull out the electrode from the smelting furnace;
[0052] Step 6, cooling the smelt...
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