![]() ![]() Gold recovered on the cathode then re~uires further refining. In both the CIL and CIP processes, the precious metal must be eluted and passed to an electrowinning step for gold 2S recovery. The carbon-in-leach tCIL) process involves loading the gold onto the carbon during leaching. ![]() Absorption of impurities onto the carbon and the difficulties of desorption of the gold are distinct disadvantages of this process. The carbon-in-pulp (CIP) process involves contact between the activated carbon and leached pulp. The second method comprises cyanidation followed by recovery using activated carbon followed by electrolysis. The process offers high gold recovery, but with low purit~. The first method involves cyanidation followed by the Merill-Crowe process wherein gold is recovered from solution by cementation with zinc powder which must then be refined to obtain gold metal. Hitherto, there have existed two principal methods of recovering gold from gold ores or gold concentrates. The invention further relates to a process for the recovery of metallic gold generally of high purity from pregnant solutions as a result of the leaching of gold ore or concentrates by acidified thiourea. Y02P10/00- Technologies related to metal processingģ~3~ This invention relates to a process for the recovery of metallic gold from gold-containing thiourea, thiosulfate or thiocyanate solutions.Y02P- CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS.Y02- TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE.Y- GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS AND DIGESTS.by filtration, by magnetic means, or by thermal decomposition obtained by leaching by physical processes, e.g. C22B3/22- Treatment or purification of solutions, e.g.C22B3/20- Treatment or purification of solutions, e.g.C22B3/16- Extraction of metal compounds from ores or concentrates by wet processes by leaching in organic solutions.C22B3/04- Extraction of metal compounds from ores or concentrates by wet processes by leaching.C22B3/00- Extraction of metal compounds from ores or concentrates by wet processes.C22B11/04- Obtaining noble metals by wet processes. ![]() C22B- PRODUCTION AND REFINING OF METALS PRETREATMENT OF RAW MATERIALS.C22- METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Individual filed Critical Individual Priority to CA002013537A priority Critical patent/CA2013537A1/en Priority to US07/649,388 priority patent/US5223023A/en Publication of CA2013537A1 publication Critical patent/CA2013537A1/en Status Abandoned legal-status Critical Current Links Original Assignee Individual Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Ritcey Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Abandoned Application number CA002013537A Other languages French ( fr) Google Patents Recovery of gold from solution by reduction-precipitation with stabilized alkali metal borohydride Google Patents CA2013537A1 - Recovery of gold from solution by reduction-precipitation with stabilized alkali metal borohydride CA2013537A1 - Recovery of gold from solution by reduction-precipitation with stabilized alkali metal borohydride ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |