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 … Read more
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. … Read more
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 application may be made to other two or three … Read more
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’ … Read more
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 … Read more
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 … Read more
Details of good silver sulphide leaching and filtration circuit operation and instructions for sequencing and preparing for startup. The following items must be checked before the equipment in this EXAMPLE Argentite Leaching Circuit is started. The leach tank agitators should be running. Check that the Argentite filter feed pump, drum filter, repulper and tailings sampling pump … Read more
In preparation for this EXAMPLE Startup, the following items must be checked before the associated conditioning and flotation equipment and circuit is started. Ensure that all applicable reagent systems are operational, and that the conditioning tank agitators, flotation feed pumps, flotation mechanisms, flotation blower, and the rougher concentrate, cleaner tails, and argentite leach feed pumps are operational. The samplers … Read more
Our EXAMPLE Grinding and Classification Circuit is designed to grind 500 tonnes of ore per day, operating 24 hours per day, with an availability of 95%. This circuit will grind -5/8″ material from the Crushing Plant, classify the slurry in one of two cyclones, and pass 70% of the minus 200 mesh material to the … Read more
I was asked to “size/design” the crushing and grinding circuit required to process 200 TPD of a mystery ore = without hardness or much sizing data. All I had were a set of videos showing how the current 50 TPD plant worked at feeding the gold leaching carbon adsorption plant. I had to improvise a … Read more