Roasting method and separation method of chromium vanadium titanium magnetite
A separation method and technology of titano-magnetite, applied in the roasting field of chrome-vanadium-titanium-magnetite, can solve the problems of long process, high cost, and difficult control, and achieve the effects of low cost, effective separation, and low control difficulty
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Embodiment 1
[0040] First, according to the weight ratio of 95 parts of chromium vanadium titanium magnetite, 10 parts of anthracite coal powder, 5 parts of sodium carbonate and 1 part of sodium bentonite, they were mixed and pressed into green pellets, dried at 150 ° C and dried at 1000 °C and nitrogen atmosphere for the first calcination for 20 minutes to obtain metallized pellets with a metallization rate of 81%.
[0041] Among them, chromium vanadium titanomagnetite contains TFe52.5%, V 2 o 5 0.55%, TiO 2 11.7%, Cr 2 o 3 0.88%, its particle size is 250 mesh; anthracite coal powder contains 17.6% volatile matter, 7.9% ash, 74.6% fixed carbon, its particle size is 250 mesh; sodium carbonate is industrial sodium carbonate with a purity of 92%, and a particle size of 250 mesh; The particle size of the green pellets is 10mm.
[0042] Secondly, after crushing the obtained metallized pellets into particles below 2mm, leaching with hot water, the leaching temperature is 70°C, the pH value...
Embodiment 2
[0044] First, according to the weight ratio of 105 parts of chromium vanadium titanium magnetite, 20 parts of coke powder, 30 parts of sodium carbonate and 5 parts of sodium bentonite, they were mixed and pressed into green pellets, dried at 150 °C and dried at 1300 °C under a nitrogen atmosphere for the first calcination for 60 minutes to obtain metallized pellets with a metallization rate of 85%.
[0045] Among them, chromium vanadium titanomagnetite contains TFe52.5%, V 2 o 5 0.55%, TiO 2 11.7%, Cr 2 o 3 0.88%, and its particle size is 250 mesh; coke powder contains 87.% of fixed carbon, and its particle size is 300 mesh; sodium carbonate is industrial sodium carbonate with a purity of 98%, and a particle size of 250 mesh; the particle size of the green pellets made is 30mm .
[0046] Secondly, after crushing the obtained metallized pellets into particles below 2 mm, leaching with hot water, the leaching temperature is 90° C., the pH value is 3, and filtering to obtain...
Embodiment 3
[0048] First, according to the weight ratio of 98 parts of chromium vanadium titano-magnetite, 12 parts of coke powder, 10 parts of sodium carbonate and 2 parts of sodium bentonite, they are mixed and pressed into green pellets, dried at 150 ° C and dried at 1100 °C under a nitrogen atmosphere for the first calcination for 30 minutes to obtain metallized pellets with a metallization rate of 84%.
[0049] Among them, chromium vanadium titanomagnetite contains TFe52.5%, V 2 o 5 0.55%, TiO 2 11.7%, Cr 2 o 3 0.88%, and its particle size is 300 mesh; coke powder contains 87.% of fixed carbon, and its particle size is 300 mesh; sodium carbonate is industrial sodium carbonate with a purity of 95%, and a particle size of 250 mesh; the particle size of the green pellets made is 20mm .
[0050] Secondly, after crushing the obtained metallized pellets into particles below 2mm, leaching with hot water, the leaching temperature is 80°C, the pH value is 4, and the vanadium liquid is ob...
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