What is elution in gold processing?
The elute solution, normally consisting of caustic soda (the electrolyte), cyanide, and water circulates through the loaded carbon, which extracts gold and other metals. The solution then passes back through the loaded carbon, extracting more gold and other metals.
What is an elution plant?
The elution plant is built from pre-engineered modules to reduce engineering, delivery, construction, and commissioning time and cost. The plant also features a heat recovery circuit to minimize energy consumption and efficient carbon dewatering to maximize carbon regeneration and minimize energy losses.
How does an elution column work?
Elution itself works because you disrupt the bonds between the column and the substrate (i.e. by using high salt or high temperature of the eluent). The concentration of DNA in the eluate is inversely proportional to the elution buffer used: the more buffer you use, the less the final DNA concentration. …
How does carbon in leach work?
The carbon-in-leach process integrates leaching and carbon-in-pulp into a single unit process operation in which the leach tanks are fitted with carbon retention screens and the carbon-in-pulp tanks are eliminated.
What is elution process?
In analytical and organic chemistry, elution is the process of extracting one material from another by washing with a solvent; as in washing of loaded ion-exchange resins to remove captured ions.
How do you remove carbon from gold?
Abstract Gold in the form of its cyanide complex is desorbed from activated carbon by contacting the carbon with a stripping liquid at temperatures above that 130*C but below the decomposition temperature of the gold cyanide complex. The stripping liquid may comprise water, dilute caustic or dilute caustic cyanide.
What are the types of elution?
There are two different types of elution methods, namely, specific and nonspecific elution. In specific elution, the target protein–ligand complex is challenged by agents that will compete for either the ligand or the target thereby releasing the target protein into solution.
What is CIL tank?
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.
Why do we use activated carbon in CIL process in gold extraction?
Gold Recovery Process The gold will leach out and mix with the cyanide into a solution. Activated carbon is then used to separate and store the gold, which is removed as the final step of the process.
What is the purpose of elution?
Elution removes antibody molecules from the red cell membrane either by disrupting the antigen or changing conditions to favor dissociation of antibody from antigen. Many techniques are available, and no single method is best in all situations.
Does carbon attract gold?
Activated carbon has a remarkable capacity for adsorption. The activation process gives it a submicroscopic porous network and a tremendous surface area, providing numerous bonding points for gold molecules.
What is elution and how does it work?
Elution is the next step in the process, whereby the adsorption of the gold cyanide complex onto carbon is reversed. Loaded carbon is removed from the CIL circuit and the gold stripped from the carbon using a number of treatment steps.
What is eluate gold?
Elution is the next step in the process, whereby the adsorption of the gold cyanide complex onto carbon is reversed. Loaded carbon is removed from the CIL circuit and the gold stripped from the carbon using a number of treatment steps. The result is a solution of high gold concentration (pregnant eluate).
How is gold recycled from gold elution?
During the recycle stage, a batch of solution (called the recycled eluate or ‘split’) containing a small amount of gold from the previous elution cycle is flushed through the carbon bed.
How much carbon is used in the elution process?
This is done in a batch process with six tonnes of carbon being treated each strip. When the elution column is full of carbon, potable water is flushed through the column to remove any remaining entrained slurry. Acid Washing