Audited Supplier
380V or Customized
AC Motor
15kw
Mine
Limestone
18-48mm
150×250mm
New
1year
Provide
Customerized
Depending on Model
Carbon Steel
Asia, Africa, North America
Cil
Suplly
Depending on Model
Suplly
Suplly
Single Tank Cil
Cil Plant Cleaning System
Gold Cil Tank South Africa
25ton Per Day Gold Leach Cil Plant
Cil Gold
Gold Cil Plant Processing Equipments
oem
Wooden Cases or Plastic Membrane
1500*3000mm
China
Product Description
Gold CIL Leaching Process Explained
Cyanide is a lixiviant, or reagent that is used to leach, often in tanks, gold from a solid matrix and form a gold cyanide complex. The gold cyanide complex is then extracted from the pulp or slurry by adsorption onto activated carbon. CIL stands for carbon-in-leach. This is a gold extraction process called cyanidation where carbon is added to the leach tanks (or reaction vessel) so that leaching and adsorption take place in the same tanks. CIL is slightly different from another gold extraction process called CIP or carbon-in-pulp process. In the latter case leaching takes place in tanks dedicated for leaching followed by adsorption onto carbon in tanks dedicated for adsorption.
Leaching can be assimilated to the principle of preparation of tea. When we add tea in hot water, the aroma of tea will dissolve in the water and not the tea leaves. So the aromas is found in liquid form and tea leaves remains in solid form in the hot water. Thus we can separate (solid-liquid separation) tea aromas from tea leaves (filtration for example). At this stage , we have been able to extract aromas of tea from the tea leaves by changing the physical shape of the tea aromas.It is the same principle used in the leaching of gold. The gold that is in solid form in the ores turned into liquid form with cyanide in the presence of oxygen. That's the way gold is separated from the majority of its gangue. The second step is the adsorption of gold on the surface of the activated carbon. Following a natural phenomenon known around the world (positive charges attract negative charges) Gold sticking to coal. the coal loaded with gold and some impurities is then transferred to the elution where he undergoes a cold wash which removes certain impurities and then a hot wash. The solution from the hot wash is transferred to the electrolysis where pure gold is recovered.
Advantages
Gold Leaching( carbon in leach) process is widely used in the newly built gold leaching plants in recent years, and a lot of plants are changing into CIL as well. Gold Leaching CIL process is suitable for the treatment of oxidized gold ore with low sulfur content and mud content. It is unsuitable for the gold ore with high-grade silver. Generally, the proportion of gold and silver should not exceed 1:5. The best conditions for CIL process in China: PH=10-12, sodium cyanide concentration is not less than 0.015%, the particle size of activated carbon is 1.0-3.35mm, the type of carbon is coconut shell activated carbon, and the slurry concentration is 40-45%. Gold Leaching Methods: flotation, carbon pulp adsorption, gravity beneficiation, and so on. These three methods of the leaching process and gold mining equipment manufacturing can be completed independently. Gravity separation and flotation are the common beneficiation methods used in gold ores, and great improvements have been made in the beneficiation technology and equipment. The mainstream gold extraction methods is generally by crusher, then comminuted by the ball mill, and then through gravity separation and flotation technology, the concentrate and tailings are extracted, chemically refined, and refined to produce gold.
Product Structure
Gold Leaching( carbon in leach) was developed from CIP( Carbon In Pulp), is characterized by less process flow, timesaver in the leaching process, thus reducing the production expenditure. Besides, advanced extraction technology improving the efficiency of gold extraction. The CIL production line is wider use than CIP in the mineral industry. Gold Processing Steps, Introduction of gold CIL production line:
A. RAW MATERIAL PREPARATION: vibration feeder- conveyor belt- crusher -Crushing- grinding- leaching- desorption electrolysis- tailings dehydration
B. LEACHING and elimination: The thickened material is leached from eight agitators; a qualified reagent is added to the first set of agitators, and the activated carbon is lifted from the last set of agitators to the second set of agitators via an airlift to resist electric currents The activated carbon from the second set of agitators is raised to a carbon screen to obtain gold-loaded carbon, and the remaining slurry is returned to the first set of agitators And then into the tailwater treatment phase.
C. Tail Water Treatment: The tailings will be raised to pressure filter, filter cake known as tailings, through the belt conveyor and truck transport to the yard, filtrate into the circulating water tank for reuse.
D. AURIFEROUS CARBON TREATMENT: Gold powder is obtained by batch treatment of gold-containing carbon by desorption and electrolysis equipment. The dust enters the furnace and turns to the bar. The gold-containing carbon after electrolysis can be returned to the final stage of the reprocessing flowchart.
A. RAW MATERIAL PREPARATION: vibration feeder- conveyor belt- crusher -Crushing- grinding- leaching- desorption electrolysis- tailings dehydration
B. LEACHING and elimination: The thickened material is leached from eight agitators; a qualified reagent is added to the first set of agitators, and the activated carbon is lifted from the last set of agitators to the second set of agitators via an airlift to resist electric currents The activated carbon from the second set of agitators is raised to a carbon screen to obtain gold-loaded carbon, and the remaining slurry is returned to the first set of agitators And then into the tailwater treatment phase.
C. Tail Water Treatment: The tailings will be raised to pressure filter, filter cake known as tailings, through the belt conveyor and truck transport to the yard, filtrate into the circulating water tank for reuse.
D. AURIFEROUS CARBON TREATMENT: Gold powder is obtained by batch treatment of gold-containing carbon by desorption and electrolysis equipment. The dust enters the furnace and turns to the bar. The gold-containing carbon after electrolysis can be returned to the final stage of the reprocessing flowchart.
We have professional engineers team to draw flowchart based on customer's gold mine site details.
We supplied full set gold plant:hopper, jaw crusher, vibrating screen, ball mill, spiral classifier, slurry pump, belt conveyor, Gold smelting furnace, etc.
Successful cases
Pcking & Delivery
Our CompanyJiangxi shicheng Mine Machinery Factory was established in 1985, it's a professional machinery factory special in mining equipment research, manufacturing, sales and offers professional mine processing plant workflow design, plant installation, equipment maintenance, beneficiation processing technology guidance service as one of the metallurgical machinery equipment factory. Our products are exported to Africa,Nigeria,Zambia,Zimbabwe,Congo,Uganda,Mozambique,Angola,Southeast Asia,South America and many other coutries and regions.We are committed to creating high quality and efficient crushing and screening equipment,quality is our eternal pursuit and responsibility.
Our service & FAQ
Pre-sales service: We provide you with the prophase plan, process flow design and manufacturer equipment according to your special demand.
Sales service: Send technicians to the site to guide the installation and commissioning, train the operators, and complete the acceptance with you.
After-sales service: To establish long term friendship, we will regularly pay return visit to customers. Supplying technique, building design, instruction, installation and debugging for free.
Lifelong service: One year warranty to make sure your machine runs constantly.Always offer lifelong service and provide spare parts for a long term.
How is the quality of your products?
Sales service: Send technicians to the site to guide the installation and commissioning, train the operators, and complete the acceptance with you.
After-sales service: To establish long term friendship, we will regularly pay return visit to customers. Supplying technique, building design, instruction, installation and debugging for free.
Lifelong service: One year warranty to make sure your machine runs constantly.Always offer lifelong service and provide spare parts for a long term.
How is the quality of your products?
Answer: Our products are manufactured strictly according to national and international standard, and we will take a test on every grinder before delivery.
How about the Guaranteed?
Answer: All of our products are guaranteed for one year. If products quality is not consistent with the description as we described or the promise before you place order, we promise 100% refund.
How about price?
Answer: For the complete same machine, we can promise our quality is the best when the price same as other competitors, and our price can be lowest when the quality at standard level.
How about the service and payment terms?
Answer: We can accept T/T or other payment ways you request; 30% deposit, 70% balance before delivery, which is international trade practice; Finished product pictures will provide to customers before delivery.
How about the Guaranteed?
Answer: All of our products are guaranteed for one year. If products quality is not consistent with the description as we described or the promise before you place order, we promise 100% refund.
How about price?
Answer: For the complete same machine, we can promise our quality is the best when the price same as other competitors, and our price can be lowest when the quality at standard level.
How about the service and payment terms?
Answer: We can accept T/T or other payment ways you request; 30% deposit, 70% balance before delivery, which is international trade practice; Finished product pictures will provide to customers before delivery.
