Method for forming copper arsenate

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

423 27, 423 34, 423 47, 423602, 423604, C01G 300, C01G 2802

Patent

active

051261162

ABSTRACT:
The invention provides a method of forming copper arsenate. Copper and arsenic are leached into a treatment solution maintained at a pH level of about 2 to 5 in the presence of at least one impurity. An oxidant is added to the treatment solution to oxidize the copper and arsenic. A copper arsenate compound is precipitated from the solution as copper arsenate. Preferably, the copper arsenate is then releached in a purification solution. The molar ratio of copper to arsenic is adjusted to a level of at least 2. The pH of the purification solution is then increased to precipitate copper arsenate having a decreased concentration of said at least one impurity. Impure copper arsenate may be suspended and reacted in a recrystallization solution preferably having cupric ion. The pH of recrystallization solution is adjusted to a valve between about 1 and 4.5.

REFERENCES:
patent: 3868439 (1975-02-01), Wadsworth
patent: 4959203 (1990-09-01), Knoen et al.
patent: 4961909 (1990-10-01), Boateng
patent: 5002748 (1991-03-01), Jones et al.
patent: 5026530 (1991-06-01), Drinkard, Jr. et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for forming copper arsenate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for forming copper arsenate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for forming copper arsenate will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1862340

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.