Process for treating iron-containing sulfide rocks and ores

Chemistry of inorganic compounds – Miscellaneous process

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

75744, 75743, 423 27, 423 29, B01D 1102, B01F 100, C22B 100, C22B 300

Patent

active

060868473

ABSTRACT:
A process for treating ores or rocks is provided. The process comprises (1) combining the ores or rocks with an acid passivating agent to produce a first combination; (2) contacting the first combination with an aqueous solution comprising (a) manganate ions or source thereof and (b) a base whereby a second combination is produced; and (3) maintaining the pH of the second combination at about 11 to about 13.5. The process can also comprise (1) contacting the ores or rocks with the aqueous solution to produce a third combination; (2) contacting the third combination with an acid passivating agent to produce a fourth combination; and (3) maintaining the pH of the fourth combination at about 11 to about 13.5. The process can be used to prevent acid rock drainage of metal-bearing rocks or to produce a pretreated ore or rock which can further be contacted with a lixiviating agent such as, for example, sodium cyanide to extract metals such as, for example, gold and silver from the pretreated ore or rock.

REFERENCES:
patent: 4421724 (1983-12-01), Hunnel
patent: 4613361 (1986-09-01), Lamerant et al.
patent: 5587001 (1996-12-01), De Vries

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

Process for treating iron-containing sulfide rocks and ores does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for treating iron-containing sulfide rocks and ores, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for treating iron-containing sulfide rocks and ores will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-539037

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