The concentration of copper at the floatation stage is

Table 1: Grade/recovery performance of a hypothetical copper ore flotation process. Product % Weight % Cu Assay Feed 100 2.09 Concentrate 10 20.0 Tailings 90 0.1 (a) From Table 1, the Ratio of Concentration can be calculated as F/C = 100/10 = 10. If only

Copper Mining: The commonest ore used in the extraction of copper is Chalcopyrite (CuFeS 2) also known as Copper Pyrites and other such sulphides. The percentage of copper in the actual ore is too low for direct extraction of copper to be viable. The concentration of ore is required and it is done by the Froth Flotation method. Concentration of

S. Bulatovic, Flot ation of Oxide Copper an d Copper Cobalt Ores, in Handbook of Flotation R eagents: Chemistry, Theory and Practice Volum e 2, Elsevier Science a nd Technology Books

For copper sulfide ore, froth floatation is the first stage in the process of pyrometallurgy, in which air bubbles are introduced into a mixture of finely crushed ore with water and a chemical that aids attachment of the bubbles to the particles of copper, which are recovered as a floating froth

stage i n copper production, it reviews the cur-rent state-of-the-art, identifies recent technologi- ... nace and froth flotation. b Moreover, the miners 6Prain, supra note 4. ... Concentration of copper in earth’s crust Location of economic resource

Mining produces ores with less than 1 percent copper. Concentration is accomplished at the mine sites by crushing, grinding, and flotation purification, resulting in ore with 15 to 35 percent copper. A continuous process called floatation, which uses water, various flotation chemicals, and compressed air, separates the ore into fractions

The example of flotation circuit without grinding considered the concentration of copper ore. The feed to the circuit corresponded to 6 t/h of chalcopyrite (33% of copper), 12 t/h of chalcopyrite slow (16% of copper), and 300 t/h of gangue. The superstructure considers five flotation stages

William G. Davenport, in Extractive Metallurgy of Copper (Fifth Edition), 2011. 1.2.1 Concentration by Froth Flotation (Chapters 3 and 4 Chapter 3 Chapter 4) The copper ores being mined in 2010 are too lean in copper (0.5–2% Cu) to be smelted directly. Heating and melting their huge quantity of waste rock would require prohibitive amounts of

losses ( 60%). Reduction of “oxide copper”, by acid leaching prior the flotation concentra-tion, can increase the overall copper efficiency up to more than 70% in the single-stage leaching, achieving an efficiency in the flotation concentration stage higher than 75%

Such ores containing multiple metals such as lead, copper and zinc can be selectively extracted by using froth floatation. The minerals that do not float into the froth are called the flotation tailings or flotation tails. The froth flotation process was first patented by

At this stage, a high rate thickener dewaters most of the coppermoly concentrate before further separation occurs. The moly flotation circuit has similar groups of flotation cells with chemicals to float the moly concentrate and settle out the copper concentrate