Method for extracting vanadium from manganese vanadium slag prepared based on converter vanadium blowing
A technology of vanadium slag and converter, applied in the field of vanadium extraction of new vanadium slag, can solve the problem of high cost, achieve low cost, high vanadium extraction rate, and improve efficiency
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[0041] The preparation method of manganese vanadium slag comprises the following steps:
[0042] Step a, blending the vanadium-containing molten iron into a ladle with a capacity of 150t, the depth of the vanadium-containing molten iron is 1.80m, and the temperature of the vanadium-containing molten iron is 1390°C;
[0043] Step b, by blowing oxygen into the top of the ladle containing vanadium-containing molten iron, wherein the pressure of oxygen blowing is 0.50-1.20MPa, after first blowing for 1-15min, in the ladle containing vanadium-containing molten iron, add manganese-rich ore (containing manganese / iron oxide material), during blowing for 1 to 6 minutes;
[0044] The manganese-rich ore is a mineral containing manganese and iron oxides with a mass percentage of manganese greater than or equal to 30%, specifically one or more mixed minerals of pyrolusite, manganese ore, black manganese ore, and brown manganese ore.
[0045] Step c, after blowing is completed, manganese ...
Embodiment 1
[0062] A method for extracting vanadium from manganese-vanadium slag produced based on converter blowing vanadium, the flow chart is shown in figure 1 , specifically including the following steps:
[0063] 1) Take materials;
[0064] The manganese vanadium slag is crushed and screened, and a 200-mesh sieve is used to obtain manganese vanadium slag powder with a particle size of <74 μm;
[0065] 2) oxidation roasting;
[0066] Put the manganese vanadium slag powder into the roasting furnace, raise the temperature to 700°C and start timing roasting, the roasting time is 90min, and obtain the clinker after oxidation roasting;
[0067] 3) pickling;
[0068] The clinker after oxidative roasting is taken out, cooled at room temperature, crushed and screened, and screened to 200 mesh; the screened sample is put into a sulfuric acid solution with a concentration of 20%, and the volume ratio of the screened sample mass to the acid solution is 1g : 5mL, the temperature is maintained...
Embodiment 2
[0074] A method for extracting vanadium from manganese vanadium slag produced based on converter blowing vanadium, comprising the following steps:
[0075] 1) Take materials;
[0076] Manganese vanadium slag is crushed and screened, and a 200-mesh sieve is used to obtain manganese vanadium slag powder with a particle size of <74 μm;
[0077] 2) oxidation roasting;
[0078] Put the manganese vanadium slag powder into the roasting furnace, raise the temperature to 800°C and start timing roasting, the roasting time is 100min, and obtain the clinker after oxidation roasting;
[0079] 3) pickling;
[0080] The clinker after oxidative roasting is taken out, cooled at room temperature, crushed and screened, and screened to 200 mesh; the screened sample is put into a sulfuric acid solution with a concentration of 30%, and the volume ratio of the screened sample mass to the acid solution is 1g : 4mL, the temperature is maintained at 80°C, and the leaching time is 60min to obtain a m...
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