Roasting pretreatment process for extracting vanadium pentoxide from high-carbon scherbinaite-containing coal mine and vanadium pentoxide extracting method
A vanadium pentoxide and oxidative roasting technology, applied in the direction of improving process efficiency, etc., can solve problems such as difficult thermal control, difficulty in stable combustion, and pollution of three wastes, achieve good prospects for popularization and application, and reduce heat consumption and energy consumption , the effect of reducing operating costs
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[0027] Example 1:
[0028]High carbon-bearing stone coal vanadium ore in a place in the northwest, the chemical composition of the raw ore mainly includes C 20.25%, SiO 2 55.67%, Al 2 O 3 9.92%, V 2 O 5 0.757%, P 1.35% and Fe 7.56%, adopt the technology of the present invention to process the high carbon-bearing stone coal vanadium ore, specifically comprising the following steps:
[0029] 1. Roasting pretreatment
[0030] The high carbon-containing stone coal vanadium ore of this embodiment is first crushed (various operations including jaw crushing, counter-roll, ball milling, pulverization, etc. can be used) to -100 mesh, accounting for about 80%, and then an appropriate amount (water content) is added. The water with a content of 8%) is highly mixed by a mixer (wheel mill), and then pressed by a press at 120kgf / cm 2 Pressed continuously under pressure, the pressed stone coal blocks are mechanically stacked into brick stacks of a certain height according to approp...
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[0033] Example 2:
[0034] A high-carbon stone coal vanadium ore in a certain place in Hunan, the chemical composition of the raw ore includes C 12.65%, SiO 2 71.28%, Al 2 O 3 7.35%, V 2 O 5 0.92%, P 0.35% and Fe 1.39%, adopt the process of the present invention to process the high carbon-bearing stone coal vanadium ore, specifically comprising the following steps:
[0035] 1. Roasting pretreatment
[0036] The high carbon-containing stone coal vanadium ore of this embodiment is first crushed (various operations including jaw crushing, counter-roller, ball milling, pulverization, etc. can be used) to -100 mesh, accounting for about 80%, and then an appropriate amount of water is added. The mixer (wheel mill) is highly mixed until the moisture content reaches 10%, and then the pressure is 160kgf / cm by the press. 2 Pressed continuously under pressure, the pressed stone coal blocks are mechanically stacked into brick stacks of a certain height according to appropriate ...
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