A Novel and Eco-friendly Approach for the Simultaneous Recovery of Copper and Diamond from Waste Cutting Segments via Electrodissolution/Deposition

Autor: L. Cenk Kumruoglu, Ishak Karakaya, Mehmet Kul, Kürşad Oğuz Oskay, Onur Karasungur, Mehmet Şimşir, Fuat Erden
Přispěvatelé: Mühendislik ve Doğa Bilimleri Fakültesi -- Metalurji ve Malzeme Mühendisliği Bölümü, Kumruoğlu, Levent Cenk, Mühendislik Fakültesi
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Molecular biology
Quantity
Powder particles
Dissociation (chemistry)
law.invention
Copper Powder
law
Recovery
Diamond particles
Deposition (phase transition)
Metals and Alloys
Environmentally friendly
Cathode
Mechanics of Materials
Metals
Science & Technology - Other Topics
Prototype tests
Powders
Diamond recovery · Cu recovery · Waste cutting tools · Electrodissolution · Electrodeposition
Morphology
Optimization
Materials science
Process parameters
Diamond recovery
chemistry.chemical_element
Environmental Science (miscellaneous)
engineering.material
Hydrometallurgical process
Electrodeposition
Zinc Deposits
Response surface methodology
Dilute acid solutions
Acid
Electrodes
Reduction
Optimized conditions
Diamonds
Metallurgy
Diamond
Copper
Electroplating
Anode
chemistry
Cu recovery
Waste cutting tools
engineering
Electrodissolution
Metallurgy & Metallurgical Engineering
Hydrogen
Popis: A new approach is brought to diamond recovery from waste cutting segments. Unlike the commonly used hydrometallurgical processes, this approach offers the simultaneous recovery of copper with diamond. Besides, instead of strong acids, this work involves use of a dilute acid solution, reducing the evolution of toxic vapors. Copper base segments of waste diamond tools were used as anode, which were dissolved by applying potentials above the dissociation voltage of Cu. Simultaneously, the diamond grits detached from the segments and gathered at the bottom of the cell. Then, the dissolved Cu2+ cations were reduced, and Cu powders were electrodeposited at cathode without affecting the accumulated diamond particles. Eventually, the diamond particles could be collected from the bottom of the cell, providing the simultaneous recovery. In this work, the effect of individual process parameters on the outcome of presented approach is studied. The process parameters were then optimized, and mathematical models were developed for response variables by response surface methodology. Also, a mini-prototype was designed and operated at the optimized conditions to check the possibility of converging the proposed approach to industrial applications. Prototype tests show that all detached diamond could be recovered in 3 h and simultaneously with Cu powders.
This study was funded by The Scientific and Technological Research Council of Turkey (TUBITAK) under the Grant No. 116M406.
Databáze: OpenAIRE
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