The ore after grinding is fed to agritation and leaching tanks of cyanide solution, where the gold is dissolved in the cyanide. The pregnant solution is then transferred to a series of tanks, where carbon is added. The gold is adsorbed onto the surface of the carbon. The carbon, with gold attached, is removed by screening. The gold bearing carbon is then introduced into a heated sodium hydroxide-cyanide-water solution where the gold is dissovled. This concentrated solution is passed through a series of electrowinning cells, where the gold quickly plates (in about 3 minutes) onto the stainless steel cathodes. The gold is washed from the cathodes, with high pressure sprays, dried and melted, to be poured into molds for gold bricks, or ingots.
Powder of Feldspar
Feldspar of India
Gold CIL Main Parts
Crushing, Screening Process
By jaw crusher, self-centering shaker, the ore particle size down to 25 mm or less.
Grinding, Classification Process
By a ball mill, high weir single spiral classifier or hydrocyclone joint operation, the ore up to a certain grinding fineness, to ensure gold and gangue minerals complete dissociation.
After dewatering and thickening by thickener, overflow pulp density of the classifier will be adjusted to the required concentration of the leaching reaction (40%), and to ensure uniform leaching process, continuous feeding.
Leaching And Adsorption
Concentrated pulp by thickener fed to the leaching tank by slurry pump, adding sodium cyanide stirred 20-24 hours. Gold with cyanide to form gold cyanide complexes, gold-cyanide complex is adsorpted by activated carbon, gold loaded carbon is formed, when carbon reaches a certain grade gold, with air lifter gold loaded carbon will mention to carbon lifting sieve to dewatering, and transported to desorption electrolysis systems by pump.
Desorption And Electrowinning
Desorption solution through heating delivered to the analytical column which loaded gold loader carbon, the desorption column will be temperatured, pressured, the gold precipitated from carbon. After desorbed, the bare carbon returned to the leach adsorption section.
After desorption, the gold contained pregnant solution come into electrowinning cell, get gold powder, electrolysis lean solution can be returned for elution.
The electrolysis powder through washing, drying, and then smelting, get the gold silver bullion. Reactor with the nitric acid treatment to separate the gold and silver bullion Crude, will get gold, silver, respectively, finally by a high-frequency furnace refined into gold bullion and silver bullion.
1. Project engineering design 2.Equipment manufacture and supply
3. Package and delivery 4. Installation
5. Commissioning 6. Personnel training
·24 hours online customer service, detailed and professional solution. ·Skilled engineers, scene investigation, free customized program solution. ·The purchase contract has a certain reputation guarantee, provide you the perfect product to your hands. ·After-sales service support, Expert technical training and operating instructions, site installation and commissioning, adhere to test equipment and visit our customers regularly. ·We offer all kinds of models, high-quality crushing and screening equipment parts.
1. How long is the delivery time of your machine? The delivery time is within 20-30 working days. But if the project is very large and clients have some special requirement about the equipment, the delivery time will be extened.
2.What are the payment terms? The payment terms are L/C, T/T, D/A, D/P and other.
3.What is the minimum order quantity of your machine? 1 set. Our service will be to satisfy the needs of every client.
4.How long is the warranty period about machine? Our machine warranty period is 1 year. Wearing parts and problem coursed by worker's wrong operation are not included.
5.What is the after sale service of your company? We will provide foundation drawing to the clients for installation. Besides, we can provide installation service, workers training service, etc.
6.Can you provide wearing parts? We have four casting factories that specialize in producing wearing parts for our clients. If your machine are not manufactured by our company, please provide us the wearing parts drawing.
7.Can you provide me a solution and quotation? Please give us your details about project, raw material, the capacity, max feeding size, the output size, the usage of final products, etc.