Hydrocyclone Efficiency Curves
The Hydrocyclone Efficiency Curves are affected by many operating factors such as feed density, apex and vortex sizes and feed pump pressure. These factors will cause your cyclone classification to operate correctly, in roping or spraying mode. Everyone knows or has seen an “Ideal Cyclone Efficiency Curve” VS an actual real life hydrocyclone Efficiency Curves? I […]
Deaths, violence and illegalities in South African mining
A conflict between competing groups in a mine located in Johannesburg’s East Rand, South Africa, caused the death of seven illegal miners, about a week ago. Besides the fatal victims, also 12 other men got seriously injured. The local police was alerted on the past Sunday (July 28th) to a violent fight between the groups, […]
Sodium Metabisulfite MBS for pH Control and Pyrite Depression in Flotation
Sodium Metabisulfite aka MBS is used for pH control in froth flotation to control Pyrite depression. Below is a graph showing pH VS pyrite recovery at various collector addition rates. It is also used to prevent flotation of sphalerite by copper activation in the presence of Tennantite/Covellite in the ore. For pyrite flotation, you see maximum iron/pyrite […]
Polyurethane Screen Panels Rubbers
Deflectors Helps redirect material toward middle of panels Best suited for conventional lower open area screen panels Cutter Panel Small surface humps situated slot against flow for static flume applications Particularly effective for dewatering and heavy media recovery. Small angled surface humps direct water down and into the apertures – slot against flow. Superior […]
SAG Mill Trommel Screen
A SAG Mill trommel screen lets you control the true discharge size of your SAG mill or the transfer size to the downstream Ball Mill circuit. A well sized trommel should not let rocks pass to the Ball Mill if they are to be more than say 5/8″ or 16mm In the image case below, strangely […]
Disseminated Polymetallic Ore Deposits – Mineralogy
You do not know what Disseminated Polymetallic Ore Deposits or Complex Mineralogy until you have seen a QEMSCAN like this: With simple main observations as crazy as these below. ***The proportion of each mineral liberated at a 56µm grind P80 was: Chalcopyrite — 36% liberated Galena — 12% liberated Sphalerite — 45% liberated Pyrite — 85% liberated […]
Prosecutors accuse American businessman of faking Filipino gold mine to get over $1 million from investors
The story goes back to 2007, when a Michigan-based businessman allegedly stole over $1 million from investors that were lured into a scheme based on a fake Filipino gold mine. Freeman “Buck” Carl Reed, from St. Joseph, is the protagonist of this story, as the man is being charged with several counts of fraud by the US […]
Pra river in Ghana can become chemically contaminated if the government doesn’t act against illegal mining
Ghana’s government is determined to fight the scourge of illegal mining in the country, especially its scientifically proven consequences to the health of the people that live near the mining areas, announced the vice-president. But what can they really do to stop this disaster? According to Kwesi Amissah-Arthur, “the issue of illegal mining is not just […]
Iron from space mining might make metal market crash
After we recently talked about the project of the company Planetary Resources, which intends to do some space mining after building its Arkyd 100 spacecraft, Mining Examiner found a related statement from Declan Vogt about the possibility of mining asteroids. “The supply and demand of iron-ore and precious metals is globally well balanced; therefore, the mining […]
Modal Mineralogy Definition
Modal Analysis is essential in mineral processing and geometallurgy. It is big business for https://www.sgs.com/~/media/Global/Documents/Flyers%20and%20Leaflets/SGS-MIN-WA067-EXPLOMIN%E2%84%A2-EN-11.pdf and others.