Purification process of copper smelting byproduct ammonium perrhenate
A by-product technology of ammonium perrhenate and ammonium perrhenate, applied in the preparation of rhenium compounds, rhenium compounds, inorganic chemistry, etc., can solve the problem of high ion content
Pending Publication Date: 2020-11-03
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AI-Extracted Technical Summary
Problems solved by technology
The invention discloses a purification process of a copper smelting byproduct ammonium perrhenate. The process comprises the following six steps: dissolving, vacuum filtration, resin exchange, evaporation concentration, freezing crystallization and filtration and drying. By regulating the pH value of a crude ammonium perrhenate solution, the dissolving concentration, dissolving temperature, crystallization time, crystallization temperature, stirring rate and special resin are selected, thus preparing the ammonium perrhenate with purity being higher than 99.999%. The problem that the content ofsulfur, arsenic, selenium, copper, iron, lead, zinc and other ions in the copper smelting byproduct ammonium perrhenate is high is solved, the impurities are effectively removed, 73 impurity elementsin the copper smelting byproduct ammonium perrhenate reach 1-5 ppm or below, the recovery rate of ammonium perrhenate is guaranteed, and the recovery rate of ammonium perrhenate is 95% or above.
Rhenium compounds preparation
ArsenicLead zinc +5
- Experimental program(1)
Description & Claims & Application Information
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