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Latest Leaching Stories

2008-09-30 09:00:42

TORONTO, ONTARIO--(Marketwire - Sept. 30, 2008) - Peter Mordaunt, CEO and Chairman of Stingray Copper Inc. ("Stingray") (TSX:SRY)(TSX:SRY.WT) provides an update on the El Pilar metallurgical test work program that is being conducted by Metcon Research Inc. ("Metcon") at their laboratory facilities in Tucson, Arizona. The program is a follow up and continuation of the metallurgical test program that had been completed by Noranda Mexico/Falconbridge ("Normex") with much of Normex's column...

2008-09-12 09:00:38

BOCA RATON, Fla., Sept. 12, 2008 (GLOBE NEWSWIRE) -- New Asia Gold Corp. (Pink Sheets:NWAG) wishes to announce that preliminary laboratory scale testing results on the Kapur Project were very good. The gold occurs as 1 to 5 micron diameter fine grained free gold within open cavities of the vughy silica. The preliminary laboratory testing has indicated that 95% to 99% recoveries of the gold are possible using cyanide leaching. Indications are that the property has a large tonnage of low grade...

2008-08-09 15:00:32

Sir, What about an apology to the residents who had to put up with the Fruitgrowers Chemical Company factory in the first place, or are they being forgotten? Are the authorities going to trace the families who had children walk past the factory and lived with the constant air pollution for a lot longer than three years and suffered various symptoms, and offer medical profiling and help? The well at 26 Tahi St was contaminated 20 years ago along with others, but the Tasman District...

2008-08-04 09:00:46

PALM DESERT, Calif., Aug. 4, 2008 (PRIME NEWSWIRE) -- U.S. Mine Makers, Inc. (Pink Sheets:USMM) prides itself as "eco-friendly," and this company model is evident in the gold and platinum recovery process they have developed and are implementing in their new pilot plant. The company's new pilot plant and their future full-scale production plant are being designed to be much more environmentally friendly than gold processing plants that have traditionally used highly toxic forms of Cyanide to...

2008-07-24 03:00:50

By William Weir, The Hartford Courant, Conn. Jul. 24--So, is it OK to drink bottled water after it has been in a hot car? With the recent spate of 90-degree days and constant warnings to keep yourself hydrated, it's a question that has come up a lot lately. Water bottles made of polycarbonate plastic contain the chemical bisphenol A, or BPA, which has been known to leach into the contents of food and beverage containers. Studies of the chemical have found that it can cause cancer...

2007-12-06 06:00:00

By Marsden, J O Wilmot, J C; Hazen, N Abstract Part I in this series of papers considered the chemistry of medium-temperature pressure leaching of copper sulfide concentrates and reviewed the metallurgical testing and initial process development for this technology. This initial work resulted in the development of a process flowsheet utilizing superfine grinding (to a P^sub 98^ of 12 to 15 [mu]m and P^sub 80^ of 6 to 7 [mu]m), pressure leaching at 160[degrees] to 170[degrees]C, followed by...

2007-12-06 06:00:26

By Marsden, J O Wilmot, J C; Smith, R J Abstract Parts I and II in this series of papers presented the chemistry of medium-temperature pressure leaching of copper sulfide concentrates and reviewed the metallurgical development of a process to effectively recover copper using medium-temperature pressure leaching and direct electrowinning (DEW). Part III reviewed the large-scale demonstration of the MT-DEW-SX process at Bagdad, Arizona. Key features of the process were the use of superfine...

2007-12-06 06:00:26

By Marsden, J O Wilmot, J C; Hazen, N Abstract Over the past eight years, Phelps Dodge (a subsidiary of Freeport-McMoRan Copper & Gold, Inc.) devoted a significant amount of effort to the development of a suite of processes for the effective hydrometallurgical treatment of copper sulfide concentrates. This effort resulted in the development of high- temperature (>200[degrees]C) and medium-temperature (150[degrees] to 165[degrees]C) pressure leaching processes. Specific configurations...


Latest Leaching Reference Libraries

Soil Salinity
2013-04-01 11:15:13

Soil salinity is the salt content within the soil; the process of increasing the content of salt is known as salination. Salt is a natural element of water and soils. Salination can be a result of natural processes such as the gradual withdrawal of an ocean or mineral weathering. It can be caused by artificial processes such as irrigation as well. Soils that are affected by salt are a result of excess accumulation of salts, normally most obvious at the surface of the soil. Salts can be...

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