David Michaud 
An on-stream analyzer and small regrind cyclones (their small 1/2″ Apexes) were being plugged by trash coming from the underground mine in the form of wood and plastic. A simple solution was to install a homemade screen box on the cyclone overflow prior to feeding flotation. The operator cleans it daily, thanks to the overhead … Read more
Use the conversion factors in this Table which uses Stoichiometry to approximately convert metal assays to minerals. If you know your sample has only Chalcopyrite as a copper specie, you multiple the %Cu it assays by 2.88 to get the %Chalcopyrite of the sample.
A good grinding circuit survey (and flotation circuit sampling) is only as good as the sample cutter used for each slurry stream. Correct sampler volume and opening size insures your sample is representative of the concentrator stream you are testing. Here is a good suggested design with opening dimensions. You need to add the handle … Read more
A Schuhmann Plot help smooth out particle size data. I attach a graph created for a settling test of flotation concentrates. You draw/create a Schuhmann Plot using the details found in http://technology.infomine.com/enviromine/ard/mineralogy/Size%20&%20Liberation.htm and http://www.chem.mtu.edu/chem_eng/faculty/kawatra/CM2200_2009_HW_3_sizedist.pdf
Here is a Table to help or show you how to estimate the cost of building a mine in today’s market. You can roughly estimate how much is the cost of building a new mine by its rated capacity. The daily plant tonnage MULTIPLIED by $5000 to $25000 of the 2013 US$. A good … Read more
In the absence of SART Process, cyanide is consumed by the leaching of cyanide-soluble zinc minerals present in the ore, generating a WAD cyanide-zinc complex (Zn(CN)42-) in solution. This dissolved WAD CN-Zn complex circulates back to the leach in the recycled Barren Leach Solution (BLS), and further reacts with Ag2S in the fresh ore to … Read more
Mining Your iPhone [Infographic] — By the team at 911 Metallurgist
http://www.911metallurgist.com/30-Ghana-Gold-Facts 30 insane stats about Ghanaian Gold Mining [Infographic] – An infographic by the team at 911 Metalurgist
Cyanide is a lixiviant, or reagent that is used to leach, often in tanks, gold from a solid matrix and form a gold cyanide complex. The gold cyanide complex is then extracted from the pulp or slurry by adsorption onto activated carbon. CIL stands for carbon-in-leach. This is a gold extraction process called cyanidation where … Read more
http://www.911metallurgist.com/keep-mining/ Crushing Grinding Gravity Concentration Froth Flotation Leaching (Gold-Silver/Copper or Others) in Tanks or Heap Electrowinning and Smelting Thickening & Filtering / Tailings & Water Treatment Laboratory & General Mineral Processing Categories Concentrator Manuals/Procedures Crushing & Screening Dewatering Equipment Feeders and Conveyors Flotation Flowsheets & Flowcharts Geology Gold Extraction Cyanide Leaching Gold Refining Gravity Concentration … Read more