Flowsheets & Flowcharts

Free Milling Gold Ores

Many problems on free milling gold ores have been solved by the 911MPE Testing Laboratory. One free milling gold ore received for testing the application of the Mineral Jig in the Ball Mill Classifier circuit gave the following results: Head Ore, 0.65 oz. Gold per ton (Assayed) 0.643 oz. Gold per ton (Calculated) Amalgam from Amalgamation … Read more

Flotation Cyanidation CIL Tailings

This simple process flowsheet allows for Flotation Cyanidation Tailings in cases where ore bodies at depth have become more refractory and dotation ahead of cyanidation 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 … Read more

Flotation Flowsheets

A flotation flowsheet should be as simple and flexible as possible, because changes in the ore often necessitate changes in treatment: the more flexible the flotation machine, the easier and quicker the changes can be made, not only in regard to flexibility in arrangement of cells, but also the ability to treat coarse as well as … Read more

Copper Process Flowsheet Example

A simplified schematic drawing of copper flotation flowsheet.  Run-of-mine open pit ore will be crushed in a gyratory crusher. The crushed ore will be processed by means of semi-autogenous and ball mill grinding followed by rougher flotation, regrind, cleaner flotation, and dewatering to produce copper concentrate. The concentrate will be trucked via the existing road … Read more

Effect of Regrind “Finer Grind” Gold Recovery

Regrinding a flotation concentrate (commonly the rougher or scavenger conc) can often produce gains in final concentrate grades and overall metal recoveries.  What is also possible and not unfrequent that all you get is a better concentrate grade.  If the valuable metal (in this case Au) is locked with other easy to float sulfides and were … Read more