A method of comprehensively recovering rhenium and copper from copper smelting waste acid

A technology for copper smelting and rhenium-rich slag, which is applied in the field of targeted rhenium sinking copper-rhenium-rich slag high-pressure leaching-leaching rhenium-rich solution to prepare potassium perrhenate by sinking rhenium, which can solve the complex process, low recovery rate, and processing time. Long-term problems, to achieve the effect of increasing the precipitation rate, reducing the dosage, and increasing the reaction rate
CN105969985AActive Publication Date: 2016-09-28ZIJIN MINING GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZIJIN MINING GROUP
Publication Date
2016-09-28

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Abstract

A method of comprehensively recovering rhenium and copper from copper smelting waste acid is disclosed. The method includes subjecting the copper smelting waste acid after being filtered to remove lead to targeted rhenium settling to obtain rhenium-rich slag, subjecting the rhenium-rich slag to hot-press oxidation leaching to obtain a rhenium-rich leachate, evaporating and concentrating to make the rhenium concentration 10-20 g / L, performing rhenium settling with KCl, and recrystallizing to obtain potassium perrhenate, and subjecting the liquid after rhenium settling to sulfuration copper settling. The objective of the method is to overcome complex processes, long treatment time, low recovery rates, and other disadvantages of processes recovering rhenium and copper from copper smelting waste acid through leaching at present, and to form a process which is low in investment, simple in operation, high in recovery rate, low in cost, low in pollution and convenient for industrial popularization and application, thus achieving high-value utilization of the rhenium resource in the copper smelting waste acid.
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Description

technical field

[0001] The invention relates to a method for comprehensively recovering rhenium and copper from copper smelting waste acid, in particular to a method for preparing rhenium from copper smelting waste acid by targeting rhenium-copper-rhenium-rich slag high-pressure leaching-leaching rhenium-rich liquid Potassium rhenate method. Background technique

[0002] Rhenium is the densest metal other than uranium group metals. It has very high hardness, wear resistance, and corrosion resistance. It is widely used in petroleum catalysts, aerospace high-temperature superalloys, rhenium alloys in nuclear reactors, and rhenium in military industries. Coating and other fields. Rhenium is a rare and dispersed metal element, which has no independent minerals in nature and is usually associated with other metals. The by-products of the smelting process, such as smelting dust and slag of certain copper ores, platinum group ores, niobium ores, and molybdenum ores, as well as wa...

Claims

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