patent us5147618 process for recovery of gold from

US Patent Application for PROCESS FOR THE RECOVERY OF GOLD ...

A process and system for recovery of gold from an ore having the steps of i) providing the ore containing the gold to be recovered, ii) leaching the ore in an oxidative chloride medium, including a nitrogen species to produce a solution comprising gold; and iii) recovering the gold from the solution. The gold in a preferred embodiment is recovered from refractory and carbonaceous …

بیشتر

(PDF) New Hydrometallurgical Process for Gold Recovery

The gold elution from the loaded resin was made with a mixture of organic solvent and hydrochloric acid.The gold recovery efficiency based on the Amberlite XAD -7 selective ion-exchange resin was ...

بیشتر

US Patent Application for PROCESS FOR THE RECOVERY OF GOLD ...

A process and system for recovery of gold from an ore having the steps of i) providing the ore containing the gold to be recovered, ii) leaching the ore in an oxidative chloride medium, including a nitrogen species to produce a solution comprising gold; and iii) recovering the gold from the solution. The gold in a preferred embodiment is recovered from refractory and carbonaceous ores.

بیشتر

Process for recovery of gold from refractory gold ores ...

Complete Patent Searching Database and Patent Data Analytics Services. Process for recovery of gold from refractory gold ores using sulfurous acid as the leaching agent Login Sign up

بیشتر

refractory gold beneficiation

Patent US5147618 - Process for recovery of gold from ... A process for recovering gold from refractory gold-bearing ores uses sulfurous acid as the leaching agent to form a gold-sulfite complex. The ore is ground, slurried ...

بیشتر

US5147617A - Process for recovery of gold from gold ores ...

A process for recovering gold from gold-bearing ores includes the steps of forming a slurry of ground ore and treating the ore with an oxidizing and complexing agent such as hydrogen sulfide or a sulfide salt. A chelating agent, SO 2, air, and an anion exchange resin are added to the slurry to subject the ore to a simultaneous sulfurous acid leaching and anion exchange resin adsorption step ...

بیشتر

Gold Ore Contained - shapesofafrica.co.za

Patent US5147618 Process for recovery of … A process for recovering gold from refractory goldbearing ores uses sulfurous acid as the leaching agent to form a goldsulfite complex. The ore is ground, slurried ...

بیشتر

Gold(au) Recovered As Free Metal Patents and Patent ...

Search for Gold(au) Recovered As Free Metal Patents and Patent Applications (Class 75/736) Filed with the USPTO. ... Energy and water recovery from pressure oxidation flash vessel steam. Patent number: 10323295

بیشتر

Gold Leaching Refractory

Gold Leaching Refractory. Patent US5147618 - Process for recovery of gold from ... A process for recovering gold from refractory gold-bearing ores uses sulfurous acid as the leaching agent to form a gold-sulfite complex.

بیشتر

Gold recovery process - MyScienceWork

United States Patent Classification 204/110000000. Gold recovery process. 4578163 - 6774555 - USPTO Application Dec 03, 1984 - Publication Mar 25, 1986 Richard S. Kunter John R. Turney. Abstract. A process for treating refractory ores combines pressure oxidation treatment of the ore with cyanidation and carbon-in-pulp recovery. Pressure ...

بیشتر

Process for recovery of gold from refractory gold ores ...

A process for recovering gold from refractory gold-bearing ores uses sulfurous acid as the leaching agent to form a gold-sulfite complex. The ore is ground, slurried blended with a chelating agent and then subjected to a simultaneous dissolved SO 2 leaching and anion exchange resin adsorption step in the presence of dissolved oxygen. The gold transfers to the resin which is later separated ...

بیشتر

US Patent for Recovery of gold Patent (Patent # 4,551,213 ...

Gold values are recovered from mixtures thereof contained with sulfur, especially mixtures obtained from the hydrometallurgical processing of copper. The process comprises the following steps:(a) forming an aqueous suspension of the mixture containing the gold and sulfur values;(b) adjusting the chloride concentration of the suspension so that the suspension contains at least about 12 weight ...

بیشتر

US5147618A - Process for recovery of gold from refractory ...

A process for recovering gold from refractory gold-bearing ores uses sulfurous acid as the leaching agent to form a gold-sulfite complex. The ore is ground, slurried blended with a chelating agent and then subjected to a simultaneous dissolved SO 2 leaching and anion exchange resin adsorption step in the presence of dissolved oxygen. The gold transfers to the resin which is later separated ...

بیشتر

Process for the recovery of gold from carbonaceous ores ...

U.S. patent number 4,289,532 [Application Number 06/125,926] was granted by the patent office on for process for the recovery of gold from carbonaceous ores. This patent grant is currently assigned to Freeport Minerals Company. Invention is credited to Bernard M. Fisher, Raphael F. Matson.

بیشتر