Gold Extraction Equipment and Recovery Processes
Gold extraction recovery processes, gold production line including: gold ore jaw crusher, mobile crusher, cone crusher, flotation machine, grinding mill, etc.
>> Click on Picture to view a larger version
Gold Production Line Supplied by SBM
We offer gold production line like: gold mining equipment, gold extraction equipment and gold recovery processes. SBM as a large mining machinery company in Shanghai have been leader in mining machinery industry for over 20 years in China. Our machine have been sold to 120+ countries. Get more info and reliable price quotation, please contact us directly through “Online Chat” system in our website. 24/7 online!
At present, gold has been known and highly valued since prehistoric times. It may have been the first metal used by
humans and was valued for ornamentation and rituals. Approximately 60% of the gold mined today is held by government and central banks and gold is presently the most significant means of international payment. So gold ore mining, gold extraction and processes is very important today.
Overview of Gold Extraction and Recovery Processes
Various methods such as gravity concentration, flotation, panning, pyrometallurgy, cyanidation etc are available for the extraction of gold metal from its ores. Amongst these methods, cyanidation is the most common method used in the leaching of gold from the ore. This process involves the dissolution of gold containing ores in dilute cyanide solution in the presence of lime and oxygen. For refractory ores such as sulfide ores and carbonaceous ores which are not susceptible to direct cyanide leaching, various methods such as pressure oxidation, roasting, chlorination, biooxidation etc are available to treat these ores to expose the gold particles before cyanidation. Thioura leaching was developed as a potential substitute to cyanide leaching due to its lower toxicity and greater rate of gold and silver dissolution. Other
alternative lixiviants to cyanide such as bromides (acid and alkaline), chlorides and thiosulfate are also
The common processes for recovery of gold solution includes:
1. Carbon adsorption, Merrill-Crowe process, electrowinning and ion-exchange / solvent extraction.
2. Traditionally, Merrill-Crowe process was used to remove gold from a cyanide solution by using zinc dust to precipitate gold from its solution. Carbon adsorption is increasing using in newer plants for gold recovery.
3. Carbon in Pulp technique involves contacting the leached pulp with granular carbon in a series of agitating tanks with a sufficient retention time.
4. Selected summary of patented gold recovery processes and examples of commercial mining and recovery gold processes.
Gold Extraction Equipment and Mining Equipment
The mainly equipment in gold extraction and mining processes is including: gold ore jaw crusher, impact crusher, cone crusher, vibrating screen, vibrating feeder, belt conveyor, flotation machine, etc. Get detail info of our equipment, and gold ore production line, please talk with online customer service in our website with no hesitate.