Method for preparing ammonium perrhenate
A technology of ammonium perrhenate and perrhenic acid, applied in chemical instruments and methods, rhenium compounds, inorganic chemistry, etc., can solve the problems of molybdenum-rhenium separation difficulties, waste of resources, environmental pollution, etc., and achieve good economic value and environmental benefits , the effect of protecting the environment
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[0025] The method for preparing ammonium perrhenate described in the present invention is as figure 1 As shown, the tungsten-gold ore is roasted to produce flue gas. After the flue gas is dedusted, it is washed. The water produced by the washing contains H2SO4, H2SO3, SO2, H2MoO4, and H2ReO4. The content of H2ReO4 is 40-50mg / L. The washing water enters the nanofiltration membrane to concentrate, and the nanofiltration concentration results are as follows:
[0026]
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