Method for preparing V2O5 through water vapor charring pretreatment of high-silicon vanadium-containing stone coal
A technology of V2O5 and water vapor, applied in the direction of improving process efficiency, etc., can solve the problems of low leaching rate, large energy consumption value, high energy consumption, etc., achieve clean and environmentally friendly process flow, avoid high energy consumption, and vanadium leaching rate high effect
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example 1
[0036] Example 1: 100 tons of high-silicon vanadium-containing stone coalization pretreatment to prepare V 2 o 5 method.
[0037] When using the patent of the present invention, crush 100 tons of high-silicon vanadium-containing stone coal mine to 100 mesh, inject 40 tons of concentrated sulfuric acid from the sulfuric acid tank, stir for 45 minutes, then add 15 tons of oxalic acid solution with a mass concentration of 5g / L, and stir for 30 minutes . The stirred mixture was sent into the hopper car with a conveyor belt and pushed into the carbonization chamber; water vapor at 300°C (provided by the nearby pharmaceutical factory) was sprayed into the carbonization chamber to maintain the temperature of the carbonization chamber at 250°C and the carbonization time was 72 h. Then the hopper truck is pushed out, the carbonized slag is poured into the leaching tank, 200 tons of water are added to carry out one-stage leaching, pressure filtration, and the filtrate directly enters ...
example 2
[0039] Example 2: 60 tons of high-silicon vanadium-containing stone coalization pretreatment to prepare V 2 o 5 method.
[0040] Crush 60 tons of high-silicon vanadium-containing stone coal raw materials to 200 mesh, inject 12 tons of concentrated sulfuric acid from the sulfuric acid tank, stir for 20 minutes, then add 4.8 tons of urea mixed solution with a mass concentration of 5g / L, and stir for 15 minutes. The stirred mixture was loaded into the hopper car with a belt conveyor and pushed into the carbonization chamber; water vapor at 300°C (provided by the nearby pharmaceutical factory) was sprayed into the carbonization chamber to maintain the temperature of the carbonization chamber at 150°C and the carbonization time was 36 h. Then the hopper truck is pushed out, the carbonized slag is poured into the stirring and leaching tank, 60 tons of water are added to carry out one-stage leaching, pressure filtration, and the filtrate directly enters the liquid storage tank for s...
example 3
[0042] Example 3: 150 tons of high-silicon vanadium-containing stone coalization pretreatment to prepare V 2 o 5 method.
[0043] Crush 150 tons of high-silicon vanadium-containing stone coal raw materials to 150 mesh, inject 60 tons of concentrated sulfuric acid from the sulfuric acid tank, stir for 30 minutes, then add 18 tons of oxalic acid-4g / L urea solution with a mass concentration of 1g / L, and stir for 35 minutes . Put the stirred mixture into the hopper car with a belt conveyor and push it into the carbonization chamber; spray 300°C water vapor (provided by the nearby pharmaceutical factory) into the carbonization chamber to maintain the temperature of the carbonization chamber at 180°C, and the carbonization time is 72h. Then the hopper truck is pushed out, the carbonized slag is poured into the stirring and leaching tank, 250 tons of water are added to carry out one-stage leaching, pressure filtration, and the filtrate directly enters the liquid storage tank for st...
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