Results 131 to 140 of about 2,042 (158)
Some of the next articles are maybe not open access.
2009
Enargite (Cu₃AsS₄) is a refractory mineral that has not been investigated extensively with respect to copper leaching. The two main challenges to its leaching is its very refractory nature, which some sources consider to be more refractory than chalcopyrite; and the mineral contains arsenic, and possibly small amounts of antimony, which will pose a ...
openaire +1 more source
Enargite (Cu₃AsS₄) is a refractory mineral that has not been investigated extensively with respect to copper leaching. The two main challenges to its leaching is its very refractory nature, which some sources consider to be more refractory than chalcopyrite; and the mineral contains arsenic, and possibly small amounts of antimony, which will pose a ...
openaire +1 more source
1997
Natural bioleaching has been taking place for almost as long as the history of the world, but it is only in the last few decades that we have realized that bioleaching is responsible for acid production in some mining wastes, and that this bacterial activity can be used to liberate some metals. The application of the bioleaching reaction for copper has
openaire +1 more source
Natural bioleaching has been taking place for almost as long as the history of the world, but it is only in the last few decades that we have realized that bioleaching is responsible for acid production in some mining wastes, and that this bacterial activity can be used to liberate some metals. The application of the bioleaching reaction for copper has
openaire +1 more source
1997
Acidophilic microorganisms that oxidize iron and sulfur can be exposed to high temperatures in geothermal environments and in some heaps of ores and mine wastes. A variety of types with different optimum temperatures for growth are found across temperature gradients in the natural environments and may succeed one another as exothermic oxidation ...
openaire +1 more source
Acidophilic microorganisms that oxidize iron and sulfur can be exposed to high temperatures in geothermal environments and in some heaps of ores and mine wastes. A variety of types with different optimum temperatures for growth are found across temperature gradients in the natural environments and may succeed one another as exothermic oxidation ...
openaire +1 more source
Bioleaching of Lateritic Nickel Ores
Despite nickel-bearing sulfide deposits having a large share of the world's nickel extraction, lateritic ore deposits contain more than 70% of the world's nickel reserves. Considering the limitations of producing nickel from sulfide reserves, the use of oxide reserves (laterites) for the production of nickel will be of great importance in the future ...Abdollahi, Hadi +2 more
openaire +3 more sources