Gravity Recovery or Flotation ahead of Gold Cyanidation
Process Flowsheet NO. CY-3 is shown one of the outstanding improvements made in cyanidation whereby the coarse metallic minerals are removed from the grinding circuit by means of the Mineral Jig. The hutch product from this jig is amalgamated with a Amalgamator or Clean-Up Pan and thus the coarse mineral values, such as metallic gold, are […]
Counter Current Decantation Cyanide Gold Leaching
The Process Flowsheet CCD CY-1 shows (below) the continuous counter-current decantation system, in which all the ore is first reduced to a very fine state in the grinding mill-classifier circuit, in a cyanide solution. The slime overflow of the classifier, usually 70%—200 mesh, or finer, is sent to the first thickener, known as the primary thickener. […]
Gold Cyanidation Circuits
The principle of dissolving gold and silver values in solutions of potassium or sodium cyanide is old and has been thoroughly carried out in practice for many years. There have been only a few changes in the chemical procedure and also few changes in the type of equipment used. The gold and silver are dissolved […]
Designs for Small Portable and Mobile Gold Leaching Plant
Agitation capacity based on 36 to 48 hours of agitation time. Thickener area based on 6 to 7 square feet per ton of dry solids per 24 hours. Pregnant cyanide solution (Primary Thickener Overflow) is treated in a Precipitation System which includes: Clarifier, Vacuum Tank, Vacuum Pump, Clarifier Pump, Zinc Dust Feeder, Zinc […]
Gold Recovery by Batch Cyanide Leaching Plant
PROCESS FLOWSHEET DESCRIPTION: Batch Gold Cyanidation-Leaching Plant. ORE TREATED: Small tonnages of high-grade gold-silver ores and flotation or Jig concentrates amenable to cyanide treatment, used for treating as low as one ton of concentrates per day. ADVANTAGES: Where the tonnage of ore or concentrates is too low for standard continuous cyanidation plants (usually less than […]
CCD – Counter Current Decantation Flowsheet
PROCESS FLOWSHEET DESCRIPTION: Continuous counter-current decantation cyanidation flowsheet. ORE TREATED: Gold and silver ores amenable to the cyanidation process and where economics justify plant outlay. ADVANTAGES: By producing the precious metals in bullion form, the highest net return is realized on many gold and silver ores. Where the tonnage available for treatment justifies the capital […]
Gravity Gold with Amalgamation and Cyanidation
PROCESS FLOWSHEET DESCRIPTION: Gold Mineral Jig in cyanide circuit with amalgamation of the Jig concentrates. ORE TREATED: Practically all ores treated by cyanidation and especially all ores containing coarse gold. ADVANTAGES: The Mineral Jig and Amalgamation Unit have a definite place in cyanide plants, as it has been found that the gold recovered by the Jig […]
Flotation of Cyanide Leaching Tailing
DESCRIPTION: Flotation of cyanide tailing after a Merrill-Crowe gold recovery circuit. ORE TREATED: Where ore bodies at depth have become more refractory and flotation ahead of cvanidation would call for major and expensive mill alterations, the sulphide minerals containing the undissolved precious metals can be recovered by flotation and shipped to the smelter. In some […]
Flotation, Gravity and Tailings Cyanidation
DESCRIPTION: Flotation with cyanidation of flotation tailings. This flowsheet has a gravity gold recovery embedded into the grinding circuit’s ball mill discharge. ORE TREATED: Ores containing both oxide and sulphide minerals with gold or silver, or those with cyanicides which must he removed before cyanidation. ADVANTAGES: This flowsheet makes possible the milling in one plant […]
Flotation & Cyanidation Leaching of Concentrate
DESCRIPTION: Flotation followed by cyanidation of flotation concentrates. In this flowsheet the flotation concentrates produced are reground and treated by cyanidation leaching. ORE TREATED: Sulphide ores wherein base metal values are negligible (such as pyrite) but with good gold and silver values, or in cases where increased returns can be secured from the marketing of […]