Reagents and Chemicals

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

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

Rotary Kiln Maintenance

Rotary Kiln Alignment

The continuity of operation of a lime sludge kiln requires strict maintenance control. The rotary kiln is among the largest type of moving machines made and is subjected to extreme temperatures, power failures, atmospheric conditions, varying loads, and other operating conditions

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By | 2017-03-17T19:12:09+00:00 November 28th, 2016|Categories: Equipment, Reagents and Chemicals|Tags: , , |Comments Off on Rotary Kiln Maintenance

Rotary Lime Kiln Operation

Precipitated calcium carbonate, commonly called lime sludge or lime mud, is produced when sulphate green liquor is causticized with lime. For many years this lime sludge was considered a waste product and was dumped into rivers or waste ponds, or used for fill around the plants. Large quantities of new lime were purchased from commercial

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By | 2017-03-17T19:12:10+00:00 November 28th, 2016|Categories: Equipment, Reagents and Chemicals|Tags: , , |Comments Off on Rotary Lime Kiln Operation

How pH Affects Cyanide Decomposition & Use Alkalinity to Preserve Cyanide

Since acidity of the ore causes decomposition of the cyanide, an obvious method of reducing the loss is to add alkali in some form. Before doing this, the free sulphuric acid and soluble salts may be removed by leaching with water, and then a solution of caustic soda or lime is run on to the ore, and after standing for some time is drained off and

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By | 2017-03-17T19:14:33+00:00 November 2nd, 2016|Categories: Gold Refining, Reagents and Chemicals|Comments Off on How pH Affects Cyanide Decomposition & Use Alkalinity to Preserve Cyanide

How to Prepare and Storage of Cyanide Solution

The cyanide is usually dissolved in a little water before being added to the stock solution, as the amount of KCy present is more easily determined in a strong solution than in any other form. A special dissolving vat of small size is often provided and is placed at a higher level than the large vats used for the storage of the stock solution. High

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By | 2017-03-17T19:14:41+00:00 November 2nd, 2016|Categories: Cyanide Leaching, Reagents and Chemicals|Comments Off on How to Prepare and Storage of Cyanide Solution

Gold Chloride

Gold Monochloride or Aurous Gold Chloride “AuCl” is a salt is prepared by heating the trichloride to 185° in air for twelve hours. It is non-volatile and unaltered at ordinary temperatures and pressure by dry air, even when exposed to light, but begins to decompose at temperatures

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By | 2017-03-17T19:16:23+00:00 October 24th, 2016|Categories: Gold Extraction, Laboratory Procedures, Mineralogy, Reagents and Chemicals|Tags: |Comments Off on Gold Chloride

Flotation Conditioning

Flotation Conditioning is often necessary as it is not sufficient merely to make the addition of the various reagents to the pulp and then to proceed with flotation. Intimate admixture is essential in order not only to bring about their even dissemination throughout the pulp but also to ensure that the millions of particles of varying

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By | 2017-03-17T19:18:35+00:00 October 16th, 2016|Categories: Flotation, Reagents and Chemicals|Comments Off on Flotation Conditioning

Assay gold and silver in cyanide solutions

In the assay of gold and silver in cyanide solutions the degree of accuracy and the speed desired are the governing factors in the choice of methods used and the quantity of solution taken for the determination.

Evaporation {Litharge) Method

To an evaporating dish add about 50 grams litharge and 146 to 292 cc cyanide solution. Evaporate to dryness, adding about 10 grams litharge

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By | 2017-03-18T12:55:05+00:00 September 1st, 2016|Categories: Laboratory Procedures, Reagents and Chemicals|Comments Off on Assay gold and silver in cyanide solutions

Assaying for Zinc in Cyanide Solution

Zinc usually occurs in cyanide solutions as the double cyanide, but under certain conditions, e.g., in dilute solutions, a portion of the zinc may be present as zinc cyanide. It is possible that some may also exist as an alkaline zincate.

Procedure

To 500 cc of solution add 10 cc HCl, 10 cc HNO3, and 8 cc H2SO4. Evaporate on a hot

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By | 2017-03-18T12:56:03+00:00 September 1st, 2016|Categories: Laboratory Procedures, Reagents and Chemicals|Comments Off on Assaying for Zinc in Cyanide Solution

Ferrocyanide Assay Determination

The most reliable method of determining ferrocyanide in a cyanide solution is to determine the total iron and calculate to ferrocyanide.

Volumetric Method

Procedure

To 200 to 500 cc solution, depending upon the quality of ferrocyanide thought to be present, add 10 cc HCl and 5 cc HNO3, and evaporate to about 50 cc. Add 8 cc H2SO4, and evaporate to strong fumes and almost dryness

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By | 2017-03-17T19:21:13+00:00 September 1st, 2016|Categories: Laboratory Procedures, Reagents and Chemicals|Comments Off on Ferrocyanide Assay Determination

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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

Need ENGINEERING Services or Plant TROUBLESHOOTING?

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

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Contact us for process engineering, metallurgical investigations, plant optimization, plant troubleshooting, needs. WE “FIX” METALLURGY.