bacterial succession in bioheap leaching

Bioheap Leaching Process

May 29, 2011· Bioheap leaching is used commercially and is based on natural bacteria's ability to leach metals from sulphide minerals The process has been performed successfully to obtain gold, copper and uranium...

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Bioleaching

Unlike other methods, once started, bioheap leaching cannot be quickly stopped, because leaching would still continue with rainwater and natural bacteria At the current time, it is more economical to smelt copper ore rather than to use bioleaching, since the concentration of copper in its ,...

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Bacterial Leaching of Pyrite

bacterial leaching as a pre-treatment step for the extraction of gold from refractory ores and concentrates, offering potentially significant advantages over the conventional oxidative pre-treatment alternatives (Komnitsas and Pooley, 1989) Bacterial leaching has been shown in numerous dump and heap leaching situations to be...

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Minerals | Free Full

Lower-grade extractions and increasing global demand are noticeable barriers to valuable metal extraction []As an efficient recycling approach used for low-grade minerals, complex polymetallic resource, and solid ore waste [9,10], bioheap leaching and biodump leaching have been broadly applied, having potential given the exhaustion of high-quality copper min...

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Heap leaching

Both oxide and sulfide ores can be leached, though the leach cycles are much different and sulfide leaching requires a bacterial, or bio-leach, component In 2011 leaching, both heap leaching and in-situ leaching, produced 34 million metric tons of copper, 22 percent of world production...

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Ahtium

Ahtium plc was a Finnish mining company, which filed for bankruptcy on 6 March 2018 Until late 2017 the company was known as Talvivaara Mining Company plc (Finnish: Talvivaaran Kaivososakeyhtiö Oyj), when it was a nickel mining business operating Talvivaara mine in FinlandFormerly listed on the London and Helsinki Stock Exchanges, the company was a constituent of the OMXH25 index...

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Western Areas

Jan 15, 2014· BioHeap is an innovative mineral processing technology wholly owned by Western Areas, one of Australia's largest nickel producers listed on the Australian Se....

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VÍCTOR ITURRIAGA

The paper Bacterial succession in bioheap leaching (Brierley, 2001) showed the search for methods to analyze the microbial dynamics in bioleaching industrial processes as a key challenge for ....

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CORALE L BRIERLEY

Bacterial succession in bioheap leaching , Bioheap leaching, commercially applied for secondary copper ores and agglomerates, is rapidly gaining popularity , Join ResearchGate to find the ....

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BioHeap

Aug 26, 2002· Although both bacterial oxidation and non-bacterial heap leaching are established in the gold and copper industries, their combined use in nickel extraction is unique The BioHeap process treats crushed ore, so avoiding the need for fine grinding and concentration steps usually needed for most bacterial oxidation techniqu...

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Activation of bacteria in agglomerated ores by ,

Oct 01, 2003· Read "Activation of bacteria in agglomerated ores by changing the composition of the leaching solution, Hydrometallurgy" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips...

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Bacterial succession in bioheap leaching

Employ bacteria that initiate oxidation at higher pH values and condition ore for conventional leaching bacteria: Allow effective bioheap leaching of high-pH ores, expanding the types and numbers of ore deposits amenable to bioheap leaching: Understand the adaptation or succession of leaching bacteria to the changing character of the leach ....

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BIOLOGY WRITE

In the first loop the leach solution containing copper obtained from dump leaching is passed through the extraction chamber Here the leach solution comes in contact with organic extractant which extracts copper from it Leach solution and organic extractant are passed through the leaching chamber for further leaching...

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Western Areas

Jan 15, 2014· BioHeap is an innovative mineral processing technology wholly owned by Western Areas, one of Australia's largest nickel producers listed on the Australian Securities Exchange (ASX)...

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Microbial succession

Learning object about bacterial communities in sulfide-rich tailings Questions to answer Describe the succession of mesophiles, thermophiles and even hyperthermophiles in a bioleaching heap (bacteria versus archaea) Describe the succession to more and more acidophilic species in a heap or during acid mine drainage See also Microbial ....

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