Gold Extraction

Merrill Crowe vs Carbon

merrill crowe vs carbon

Several economic comparisons have been made between carbon systems and Merrill-Crowe systems. One of these, a systematic comparison completed by DeMent and King (1982) is summarized below.

Five separate conventional mills involving both Merrill-Crowe and the CIP processes were compared from an economic viewpoint. The gold concentration on the

←   Read The Full Metallurgy Article
By | 2017-09-04T14:05:54+00:00 August 16th, 2017|Categories: Gold Extraction|Comments Off on Merrill Crowe vs Carbon

Arsenic Pyrite Gold Extraction by Alkaline Leaching Oxidation

Gold mining uncovers more and more hydrothermal deposits in which gold mineralization is associated with sulfides and other compounds of base metals, arsenic, antimony, or tellurium. This type of mineralization frequently makes gold recovery difficult by conventional techniques, such as amalgamation, gravity separation, or direct cyanidation. Environmental

←   Read The Full Metallurgy Article
By | 2017-07-22T15:42:25+00:00 July 22nd, 2017|Categories: Gold Extraction|Comments Off on Arsenic Pyrite Gold Extraction by Alkaline Leaching Oxidation


The study and use of ferrocyanides was initiated with the discovery of the pigment “Prussian Blue” by Diesbach in 1704. Thus, they are among the earliest commercial chemicals and have been produced in large quantities for many years. In the United States, American Cyanamid Company, with its ample supplies of cyanides

←   Read The Full Metallurgy Article
By | 2017-06-20T09:44:41+00:00 June 5th, 2017|Categories: Cyanide Leaching|Comments Off on Ferrocyanides

Batch Cyanidation Leach of Flotation Concentrate


The production of gold bullion from gravity or flotation concentrates is often an important economic consideration for an isolated gold mining operation. It is assumed in this case that the coarse free gold has been recovered by the Mineral Jig in the grinding circuit and that the jig concentrate has been amalgamated. This treatment produces

←   Read The Full Metallurgy Article
By | 2017-05-24T14:48:17+00:00 May 24th, 2017|Categories: Cyanide Leaching, Flowsheets & Flowcharts|Comments Off on Batch Cyanidation Leach of Flotation Concentrate

Cyanide Destruction Hypochlorite / Chlorine

In the Cyanide Destruction by Hypochlorite reaction, the pH has a strong inverse effect on the ORP. Thus, wastewater treatment facilities must closely control the pH to achieve consistent ORP control, especially if they use hypochlorite as the oxidizing agent. Adding hypochlorite raises the pH, which, if unchecked, lowers the ORP. calling for additional

←   Read The Full Metallurgy Article
By | 2017-03-19T08:37:04+00:00 March 13th, 2017|Categories: Cyanide Leaching, Reagents and Chemicals|Comments Off on Cyanide Destruction Hypochlorite / Chlorine

De-Silverizing Bullion

The de-silverizing of base bullion is carried out in accordance with the principles of the well-known Parkes process.

The base bullion produced by the blast furnace department carries (apart from silver values) impurities, the chief of which are copper, antimony, and arsenic.

In order to more clearly indicate the grade of the base bullion, the following

←   Read The Full Metallurgy Article
By | 2017-03-17T19:08:11+00:00 December 22nd, 2016|Categories: Gold Refining, Laboratory Procedures|Tags: |Comments Off on De-Silverizing Bullion

Carlin Style Mineralisation Deposit Examples


goldstrike deposit Carlin Style Mineralisation Deposit Examples at Goldstrike

This section on Carlin Style Mineralisation Deposit Examples will give you a quick run through of a couple of actual Carlin deposits to give an idea of their characteristics; we will begin with Barrick’s goldstrike deposit, it’s in the north of the Carlin trend. Gold

←   Read The Full Metallurgy Article
By | 2017-08-27T10:18:15+00:00 November 24th, 2016|Categories: Geology, Gold Extraction|0 Comments

BUY Laboratory & Small Plant Process Equipment

We have all the laboratory and plant equipment you need to test or build/operate your plant.

ENTER our Mining Equipment' Store

We Sell EQUIPMENT for all types of Mineral Treatment PROCESSES and Laboratory Testing needs

Have a Mineral Processing QUESTION?

Come in, ask your question

911Metallurgist Community Forums

Talk to other metallurgists and be helped.


We can IMPROVE ALL PLANTS / Mineral Processing Engineering & LABORATORY Ore Testing

911Metallurgy Engineering

Contact us for process engineering, metallurgical investigations, plant optimization, plant troubleshooting, needs. WE “FIX” METALLURGY.
Checkout our Mining Process & Lab Equipment SelectionCLICK HERE TO ENTER
+ +