the electrowinning of gold from carbon in pulp eluates

the electrowinning of gold from carbon in pulp eluates

Gold recovery from carbon-in-pulp eluates by precipitation ...

Abstract This paper is the first in a series of three to describe a process for gold recovery from carbon-in-pulp (CIP) eluates, containing gold but contaminated with base metals. Recovery of virtually all the gold is effected by either hydrochloric or sulphuric acidification of the eluate. In this paper the effect of pH and temperature on the gold precipitation step is described.

Electrowinning - an overview ScienceDirect Topics

Electrowinning has proved to be an effective and simple method for recovering gold from the eluate. Electrowinning is done simultaneously with the elution. The barren eluate is recycled to the eluant tank and is recycled for the next elution after the reagents have been made up to their relevant concentrations.

The process design of gold leaching and carbon-in-pulp ...

The gold is recovered from this solution by electrowinning, zinc precipitation or refining technology such as the Mintek Minataur process. The eluted carbon may still contain various organic 48 2 4 4Au NaCN O H O NaAu CN NaOH+++ → + 22 2 The process design of gold leaching and carbon-in-pulp circuits

(PDF) Gold electrowinning from diluted cyanide liquors ...

Gold electrowinning from diluted cyanide liquors: Performance evaluation of different reaction systems. ... The electro winning of gold from carbon-in-pulp eluate s. Carbon-in-pulp

The Electrowinning of Gold from Carbon-in-Pulp

Electrowinning Cells Mining Metallurgy. Recovery of gold by electrowinning eluates is an important part of the gold recovery process developed by Zadra and was implemented in Carbon-in-Pulp

(PDF) The Elution Of Gold From Activated Carbon At

While previous work with solvent extractants has focused on the recovery of gold from leach liquors as a replacement for carbon-in-pulp processing, the present work presents an alternative idea ...

Gold CIL CIP Gold Leaching Process Explained CCD

Carbon in Leach vs Carbon in Pulp: Carbon-in-pulp (CIP) is the sequential leach then absorption of gold from ore. During the CIP stage, pulp flows through several agitated tanks where sodium cyanide and oxygen have been added to dissolve gold into solution.

Selective recovery of gold and silver from carbonate eluates

A process is disclosed for the direct and selective recovery of gold and/or silver from carbonate solutions, such as sodium carbonate which is used as an eluant for gold in a carbon-in-pulp process (CIP). The process comprises reduction precipitation of gold and/or silver from a carbonate solution having a pH in the alkaline range by the addition of stabilized alkali metal borohydride, such as ...

Recovery of Gold from Solutions SpringerLink

Filmer, A. O. 1982. The electrowinning of gold from carbon-in-pulp eluates. In Carbon-In-Pulp Seminar. The Australian I.M.M., Perth and Kalgoorlie Branches, and

Au Recovery Using an Activated Carbon Column

The feasibility of a process involving the use of activated carbon in a multistage column (NIMCIX contactor) for the recovery of gold from unclarified pregnant solutions was investigated on pilot-plant scale. It was found that satisfactory extractions, corresponding to a recovery of 99.6 percent, can be achieved with an average gold concentration of 0.0077 p.p.m. in the barren solutions from a ...

(PDF) CONTROL OF COPPER DURING GOLD

CONTROL OF COPPER DURING GOLD ELECTROWINNING FROM CYANIDE ELUATES A J Parker CRC for Hydrometallurgy Perth, Western Australia. Jim Avraamides. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER.

AARL Carbon Stripping System Operation: Elution ...

The gold room uses the Anglo-American Research Laboratories stripping system to strip gold from loaded carbon in batches of approximately 1.9 tonnes. The process is fully automated and controlled by electronic sequence controllers which switch both pumps and valves for each step.

The Electrowinning of Gold from Carbon-in-Pulp

Electrowinning Cells Mining Metallurgy. Recovery of gold by electrowinning eluates is an important part of the gold recovery process developed by Zadra and was implemented in Carbon-in-Pulp

The process design of gold leaching and carbon-in-pulp ...

The process design of gold leaching and carbon-in-pulp circuits contaminants. These are removed by thermal regeneration of the eluted carbon, typically in a rotary kiln at temperatures of 650–750°C. Regeneration is carried out in a steam atmosphere to minimize carbon degradation due to oxidation. The eluted and regenerated carbon is screened at about

Solvent elution of gold from C.I.P. carbon - Murdoch ...

The concentrated gold eluates are readily electrowon in a batch or continuous mode using a simple diaphragm cell to give gold bullion foil. Preliminary cost analysis indicates that this procedure is cheaper than the Zadra elution procedure and comparable to the Anglo elution procedure.

Process of Electrowinning of Gold - cnlitereagent

The desorption liquid and the gold loaded carbon in the process of electrowinning of gold are respectively placed in different mass transfer layers in the comprehensive desorption tower, that is, the pregnant liquid is concentrated in the lower part of the comprehensive desorption tower, and the gold loaded carbon is placed in the middle and lower layers of the comprehensive desorption tower and only let the non-gold-loaded pulp

Elution behaviour of metals from carbon - SAIMM

successful methods is the carbon-in-pulp (CIP) process. In CIP processing, ore is mined, ground, and leached with alkaline cyanidic solution to solubilize the gold as a gold cyanide complex. The gold cyanide is adsorbed by activated carbon, which is subsequently eluted to produce a concentrated gold

US5261945A - Selective recovery of gold and silver from ...

FIG. 9 is a flowsheet for the recovery of gold and silver from carbonate eluates in carbon-in-pulp process (CIP) by SBH reduction. DETAILED DESCRIPTION OF THE INVENTION. It has been also found that an important factor in the use of stabilized sodium

Carbon in Pulp Plant - Metallurgist Mineral Processing ...

Electrowinning Circuit. The carbon stripping process requires the continuous removal of gold and silver by passing the pregnant solution through a battery of electrolytic cells. The process continues until the gold and silver in the solution is dropped below five (5) grams of gold per metric ton of solution (5 ppm).

Selective recovery of gold and silver from carbonate eluates

A process is disclosed for the direct and selective recovery of gold and/or silver from carbonate solutions, such as sodium carbonate which is used as an eluant for gold in a carbon-in-pulp process (CIP). The process comprises reduction precipitation of gold and/or silver from a carbonate solution having a pH in the alkaline range by the addition of stabilized alkali metal borohydride, such as ...

Gold Electrolysis Electrolysis Machine Gold Refining ...

Gold electrolysis is the system which obtains gold mud from carbon by desorption and electrowinning. There are two process ways. One is in normal temperature and pressure desorption and electrolysis. Another is in high temperature and pressure desorption.

US20160208361A1 - Gold recovery from carbon - Google

Carbon fines are produced when carbon, which is used in a carbon-in-leach (CIL) or carbon-in-pulp (CIP) process for the recovery of gold, is broken. Typically, these fines, loaded to some extent...