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Coarse Gold Jigging & Coarse Sulphides Float with Fine Gold Rich Base Metal Flotation
CIRCUIT PROCESS FLOWSHEET DESCRIPTION: Gold Mineral Jig and Flash/Unit Float Cell in a flotation circuit. ORE TREATED: Partially oxidized or mixed oxide and sulphide ores. ADVANTAGES: In several cases this flowsheet has been used with outstanding success on dump ore and stope fills. Non-floating oxide minerals and tarnished gold are recovered in Mineral Jig ahead of the Unit Flotation Cell. The
Gravity Gold Recovery from Flotation Concentrate Process Flowsheet
CIRCUIT PROCESS FLOWSHEET DESCRIPTION: A Mineral Jig of the flotation concentrate regrinding circuit followed by selective flotation with amalgamation of Jig concentrates. ORE TREATED: Sulphide gold ores, principally those containing some values in copper or lead in addition to precious metals. This flowsheet is applied to ores containing large amounts of pyrite which contains intimately associated copper or lead sulphides
Gold Mineral Jigging followed by a Flotation Circuit
CIRCUIT PROCESS FLOWSHEET DESCRIPTION: A Gold Jig ahead of the flotation circuit with or without amalgamation of the Jig concentrates. ORE TREATED: Most gold ores where flotation is used for final recovery. Lead or lead-silver ores containing coarse lead sulphides or lead oxide minerals, also pyritic ores containing gold and silver. ADVANTAGES: Although most gold ores are not classed as “free
Gold Recovery Jig, Shaking Table and Amalgamation Process
CIRCUIT PROCESS FLOWSHEET DESCRIPTION: Modern, inexpensive amalgamation circuit with the Mineral Jig as the major recovery unit. ORE TREATED: Practically any gold ore containing native or free gold. ADVANTAGES From sixty to ninety-five percent recovery can be made with this simple flowsheet on many ores, and the gold produced in bullion form. The Mineral Jig is used between the grinding
Coarse Sulphide Flotation with Gravity Gold Recovery Circuit
CIRCUIT PROCESS FLOWSHEET DESCRIPTION: A Flash Unit sulphide Flotation Cell followed by a gravity concentration plant. This flowsheet shows the use of the Unit Flotation Cell, to extract/recover bas metal sulphides, in the ball mill classifier circuit in a plant where subsequent treatment consists of the usual gravity concentration methods. ORE TREATED: The ores treated in this manner are those having
Gold Flash Flotation with Whole Ore Cyanidation Leaching
GOLD CIRCUIT PROCESS FLOWSHEET DESCRIPTION: At the ball mill discharge, a Gold Flash Flotation Cell ahead of a cyanide circuit for the removal of concentrate for finer grinding or roasting, or for the removal of sulphides that are cyanicides (cyanide consumers) or for the removal of other interfering constituents. ORE TREATED: On ores where gold and silver are closely associated with
Recovery of Mercury from Amalgamation Tailing
In this paper on the recovery of mercury as sulphide, from the residues from the amalgamation and cyanide treatment of high-grade ores and concentrates, I will not discuss the many reactions, chemical and otherwise, that take place in the general process, but confine myself more particularly to the methods of recovering the mercury. I submit charts of two amalgamation-barrel charges,
Coarse Flash Flotation Circuit
DESCRIPTION: A Unit Flash Flotation Cell in coarse concentration flotation circuit. This flowsheet is similar to our Coarse gravity concentration followed by flotation circuit. ORE TREATED: This flowsheet can be used on ores wherein the base metal minerals are freed at a coarse size. This is often seen on Pb Lead/Galena flotation located on the ball mill discharge, in the center of
Amalgamation Of Gold Ores & Chloritizing Roasting
Table of ContentsExperiments in Roasting:Summary of Results:Loss of Gold in Chloridizing-Roasting:Experiments in Amalgamation:Summary of Results:Metallurgical Treatment on a Large Scale: The following minerals could be plainly seen in the ore: magnetite, pyrites of iron, pyrites of copper, quartz, and garnet. Neither galena nor zinc-blende were visible, but the ore contained a trace of lead, and in some samples of ore
Pan Amalgamation
These results obtained in experiments, proving that a low percentage of copper sulphate with a variable percentage of salt, depending on the ore, gives the best results, confirm practical mill-work. I have none of my notes, taken at the time, to refer to, so have to rely solely on memory, which precludes the conciseness that is always desirable. At that
Amalgamation Patio Process
The ores were composed principally of iron pyrites (much decomposed), in a quartz matrix, with native gold in very irregular grains. Some portions, however, carried their metallic value in a matrix of calcite and siderite. The mill in which the ores were treated consisted of two 800-lb. stamps, two amalgamating-plates, four pans, two automatic washers, two Frue vanners, and the
Coarse Ball Mill Grinding and Gold Flotation Circuit
DESCRIPTION: A flowsheet of Coarse gravity concentration followed by flotation circuit. ORE TREATED: On ores wherein base metals or gold bearing pyrite free at a coarse size. ADVANTAGES: This flowsheet illustrates the application of a concentrating table in the ball mill classifier circuit, followed by flotation of the classifier overflow at a finer mesh. Where base metal minerals free at
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 cases it is possible to
Flotation, Gravity and Tailings Cyanidation Leaching Circuit
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 of two types of ore,
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 a gold and silver bullion
Flotation & Shaking Tables with Open Circuit Ball Mill
DESCRIPTION: Flotation followed by shaker table concentration in open circuit grinding. ORE TREATED: When the mineral in an ore is freed at a coarse mesh, this flowsheet gives high recovery and high capacity. The practice is limited in scope, as on ores requiring fine grinding, closed circuit is preferable, and on ores wherein the gold is free, amalgamation or cyanidation alone or with
Closed Circuit Flotation with Regrinding Flowsheet
DESCRIPTION: Regrinding of scavenger flotation concentrate middling OR flotation cleaner tailing and refloating the ground product in closed circuit cleaning. ORE TREATED: Flotation middling containing valuable mineral particles attached to the gangue particles and which can be freed by finer grinding. ADVANTAGES: Middling is designated as such because it contains material which lowers the grade of the desired mineral concentrate to
Coarse Flotation with Gravity & Regrind Circuit
DESCRIPTION: Coarse flotation followed by regrind of coarse rougher concentrate and selective flotation or cleaning. Coarse flotation tailings and reground rougher concentrate are processed over a shaking table for precious metals. ORE TREATED: Ores wherein the minerals can be freed from the gangue at a coarse mesh and subsequently separated from each other after finer grinding. ADVANTAGES: For low cost operation
Sequential Selective Flotation Process Flowsheet
Table of ContentsSequential Flotation Circuit #1Selective flotation (sequential) flowsheet of three metalsSequential Flotation Circuit #2 A selective or sequential flotation flowsheet of two or more products. By utilizing selective flotation, two or more minerals in an ore are separated into individual high grade products. ORE TREATED: The most common of ores treated in this manner are lead zinc, copper-zinc-iron, copper-nickel, but
Flash Flotation in Gold Circuit – 2 Product Processing
DESCRIPTION: Flash Unit Flotation Cell in selective “gold” flotation circuit. ORE TREATED: The widest application of this flowsheet is on lead-zinc ore treatment, although it also can be applied to some gold ores as well as molybdenum ores containing other sulphides. This circuit is very similar to the now closed Cominco Polaris mill has; an ‘in-grinding’ flash Pb, a Pb rougher and
Simple Flotation Flowsheet – 1 Product
DESCRIPTION: A Straight flotation flowsheet of one product showing flotation machine treating ground and classified pulp. ORE TREATED: Base metal ores containing a single valuable mineral such as a copper or lead sulphide, and complex gold and silver ores, are economically handled with this simple flowsheet. It is commonly used where fine grinding is required and where the values can be
Mineral Processing Flowsheets
The Mineral Processing Flowsheets shown on the following pages are based on actual data obtained from successful operating plants. Metallurgical data are shown in these flowsheets which incorporate Crushers, Grinding Mills, Flotation Machines, Unit Flotation Cells, and Selective Mineral Jigs as well as other standard milling equipment. The Flotation Machine, the Selective Mineral Jig and the Unit Flotation Cell have
How to Size a Thickener
Knowing how to size a thickener and determine the capacity required to handle a pre-determined tonnage of a certain pulp, by overflowing a clear solution and obtaining the desired pulp density of thickener discharge, depends upon the settling rate of that particular pulp. The settling rate of any pulp is easily determined by simple laboratory tests such as outlined below: Laboratory
Rittinger and Kick’s Laws of Crushing
I happen to be one of those who believe that Rittinger probably meant what he said when he wrote what Stadler has quoted, “the increase of the surfaces exposed is directly proportional to the force required for reducing” “and therefore also to the work absorbed in effecting the separations.” (The italics are now mine instead of Rittinger’s or Stadler’s.) Our