Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1978-09-21
1979-09-25
Ozaki, G.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75117, 75119, 75121, 423101, C22B 1512, C22B 1700, C22B 2304
Patent
active
041689704
ABSTRACT:
A method is provided for purifying zinc sulphate solutions containing copper, cadmium and cobalt impurities, which comprises, in a first stage, treating the impure zinc sulphate solution with zinc dust and an antimony and/or arsenic compound so as to form a cement containing essentially all the copper and cadmium and a portion of the cobalt and separating this cement from the partially purified solution, then, in a second stage, treating the partially purified solution with zinc dust and an antimony and/or arsenic compound to form a cement containing essentially metallic zinc as well as the remaining cobalt and other incidental impurities and separating this cement from the purified solution and recycling at least the major portion of this cement to the first stage where it is used instead of zinc dust to effect further treatment of a fresh impure zinc sulphate solution. The purified solution from the second stage may also be subjected to a third purification stage for control purposes. This method provides an improved procedure for the purification of zinc sulphate solutions.
REFERENCES:
patent: 3826648 (1974-07-01), Bodson
patent: 4049514 (1977-09-01), Freeman
Noranda Mines Limited
Ozaki G.
LandOfFree
Purification of zinc sulphate solutions does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Purification of zinc sulphate solutions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Purification of zinc sulphate solutions will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1984894