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Showing 1 to 4 of 4 for “"calcine"”.
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The effect of leach concentration on the roasting and leaching on a complex sulfide ore
… zinc and copper from the iron constituents of a calcined sulfide ore. An important variable in this study proved to be the concentration of the leaching reagent -- sulfuric acid. The leaching temperature was varied within a range of 250°F to 550°F., and 8 cubic centimeters to 20 cubic centimeters …
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Evaluating the effect of alternative neutralising agent and seeding on the zinc recovery through the Zincor iron removal circuit
… so that there was much room for improvement. The calcine used for neutralisation in the Iron Removal Stage contained a portion of insoluble zinc ferrite. The insoluble zinc loss through the iron residue was associated with the presence of the insoluble zinc ferrite, as well as the phenomenon of …
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Recycling neodymium-iron-boron magnet alloy by direct sulfation with SO₂ gas
… to sulfates, which are then roasted to produce a calcine of neodymium sulfate and iron oxide. The calcine could then be leached with water to create a pure neodymium solution. To further investigate the selective sulfation reaction, direct sulfation using SO2 would be attempted. Solid particle …
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Economic evaluation of burning bituminous and western PRB coals for power production based on select pollution control scenarios
… by the air separation unit (ASU) required to calcine the limestone, and then the main feed pump. The power use for CO2 compression and the main feed pump in the limestone process is higher than the MEA process, and the ASU is required only for the limestone process. However, the power loss due …