Method for jointly producing chromium salt and ferrochromium alloy by sintering with wet and fire methods
A ferrochromium alloy, roasting technology, applied in the direction of chromium compounds, chemical instruments and methods, process efficiency improvement, etc., can solve problems such as instability, difficult smelting, lack of practical value, etc.
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[0022] The present invention will be further described below in conjunction with the accompanying drawings, so that those of ordinary skill in the art can implement it after referring to this specification.
[0023] Such as figure 1 Shown, the method for roasting wet method-fire method coproduction of the present invention chromium salt, ferrochrome alloy comprises the steps:
[0024] In step 101, the coarse chromite ore powder is sent to a ball mill through mechanical conveying equipment to be ground into fine chromite ore powder with a diameter less than 0.08 mm.
[0025] Step 102, mixing the fine chromite powder and sodium carbonate to form a mixture, and the mass of the sodium carbonate is 0.56-0.60 times of the theoretical amount of chromium trioxide in the fine chromite powder.
[0026] Step 103, transfer the above-mentioned mixture to a rotary kiln, and roast it under the condition of 1150° C. to 1200° C. to form primary roasted clinker, and convert the chromium trioxi...
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