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Suspension codeposition in electrowinning cells: The role of hydrodynamics
Author(s) -
Graydon J. W.,
Kirk D. W.
Publication year - 1991
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450690223
Subject(s) - electrowinning , electrolyte , cathode , suspension (topology) , copper , anode , phosphorus , materials science , plating (geology) , metallurgy , chemical engineering , chemistry , electrode , geology , mathematics , homotopy , geophysics , pure mathematics , engineering
Electrolytic codeposition of particles suspended in a plating bath constitutes a novel method for producing certain alloys. The suitability of this approach for the manufacture of copper‐phosphorus alloy from a suspension of red phosphorus in acid copper sulphate solution was assessed in a scaled, full‐depth, transparent electrowinning cell operated continuously. The suspension was maintained both by the jetting of recirculated electrolyte and by the natural flows of electrolyte and anodic bubbles. Smooth thick deposits of copper containing acceptably uniform, optimal levels of phosphorus were produced. The vertical variation of phosphorus in the cathode is explained by a detailed consideration of hydrodynamic flow near the cathode.