Method for extracting vanadium through oxygen-enriched roasting and vanadium-extracting device
An oxygen-enriched roasting and roasting technology, which is applied in the field of vanadium extraction devices, can solve problems such as high energy consumption, environmental pollution, and low production capacity, and achieve the effects of high automation, serious pollution, and simple structure
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Embodiment 1
[0048]The stone coal vanadium ore containing 0.66% vanadium is crushed to 325 mesh and dried, and then the ore powder dried to a moisture content of ≤1% is mixed with oxygen-enriched air containing 99% oxygen through the screw feeder 1 and sprayed through the nozzle 3 into the reaction tower 5, under the condition of efficient mixing of vanadium ore and oxygen-enriched air, the process of decarburization, desulfurization and oxidation of low-valence vanadium to high-valence vanadium V is carried out. The bottom of the reaction tower 5 is fed with low-pressure industrial pure oxygen through the low-pressure industrial pure oxygen interface 8 to maintain the oxidizing atmosphere in the furnace. The roasting was continued for 180 minutes under the push action, and was discharged from the bottom of the furnace. The furnace charge was detected to have an oxidation conversion rate of 90.23% from low-valence vanadium to high-valence vanadium V.
Embodiment 2
[0050] The stone coal vanadium ore containing 1.15% vanadium is crushed to 140 mesh and dried, and then the ore powder dried to a moisture content of ≤1% is mixed with oxygen-enriched air containing 70% oxygen through the screw feeder 1 and sprayed through the nozzle 3 In the reaction tower 5, the process of decarburization, desulfurization and oxidation of low-valence vanadium to high-valence vanadium V is carried out under the condition of highly efficient mixing of vanadium ore and oxygen-enriched air. The bottom of the reaction tower 5 is fed with low-pressure industrial pure oxygen through the low-pressure industrial pure oxygen interface 8 to maintain the oxidizing atmosphere in the furnace. The roasting was continued for 120 minutes under the push action, and was discharged from the bottom of the furnace. The furnace charge was tested to have an oxidation conversion rate of 92.18% from low-valence vanadium to high-valence vanadium V.
Embodiment 3
[0052] The stone coal vanadium ore containing 1.53% vanadium is crushed to 200 mesh and dried, and then the ore powder dried to a moisture content of ≤1% is mixed with oxygen-enriched air containing 90% oxygen through the screw feeder 1 and sprayed through the nozzle 3 into the reaction tower 5, under the condition of efficient mixing of vanadium ore and oxygen-enriched air, decarburization, desulfurization and oxidation process of low-valence vanadium to high-valence vanadium V are carried out, the temperature of reaction tower 5 is controlled at 550°C, and the temperature of furnace 7 is 850°C At the bottom of the reaction tower 5, low-pressure industrial pure oxygen is introduced through the low-pressure industrial pure oxygen interface 8 to maintain the oxidizing atmosphere in the furnace. Roasting continued for 30 minutes under the impetus of the furnace, and was discharged from the bottom of the furnace. The furnace charge was detected to have an oxidation conversion rate...
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