Method for preventing electrolytic cementation of spent hard metal anode plates
By adding dispersants, antioxidants, and nonionic surfactants to the electrolyte and combining them with ultrasonic vibration, the problem of cemented carbide block caking during electrolysis was solved, improving electrolysis efficiency and the dissolution rate of cobalt and other binder phases, and ensuring easy extraction and high purity of the electrolysis products.
CN118026177BActive Publication Date: 2026-07-10HUBEI GREEN TUNGSTEN CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUBEI GREEN TUNGSTEN CO LTD
- Filing Date
- 2024-01-19
- Publication Date
- 2026-07-10
AI Technical Summary
Technical Problem
During the electrolytic recycling of waste cemented carbide, cemented carbide blocks are prone to forming clumps, which affects electrolysis efficiency and cobalt dissolution rate, and the clumps are difficult to remove from the electrolytic cell.
Method used
Adding dispersants, antioxidants, and nonionic surfactants to acidic electrolytes, combined with ultrasonic vibration, can inhibit oxide precipitation and control the dissolution rate of the binder phase, thus preventing caking.
Benefits of technology
It effectively reduces caking, improves electrolysis efficiency and the dissolution rate of binder phases such as cobalt, and makes the electrolysis products easier to remove and of higher purity.
✦ Generated by Eureka AI based on patent content.
Abstract
The application discloses a method for preventing hard alloy waste from hardening in electrolysis, which comprises the following steps: providing an electrolytic tank, adding electrolyte into the electrolytic tank, immersing the hard alloy waste into the electrolyte, and performing electrolysis by taking the hard alloy waste as an anode and an inert electrode as a cathode; wherein the electrolyte comprises the following components with the following concentrations: 100-350 g / L of acid electrolyte, 0.5-2.5 g / L of dispersant, 0.1-1 g / L of non-ionic surfactant, 3-10 g / L of antioxidant and water. The method can overcome the hardening problem in the electrolysis process.
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