PROCESS FOR NON-HEATING LEACHING NICKEL AND MAGNESIUM FROM LATERITE USING MECHANO-CHEMICAL EFFECT
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United States of America Patent
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Issued Date -
May 19, 2011
app pub date -
Dec 22, 2009
filing date -
Nov 19, 2009
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Abandoned
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Abstract
A method of physicochemical leaching valuable metals is able to increase the leaching rate of nickel and magnesium contained in laterites, nickel ores, with a low concentration acid solution by using mechano-chemical effect. That is a method to add external energy to laterites containing nickel and magnesium to physically disintegrate their crystals and exposure nickels captured inside of the crystals to leach nickel and magnesium with a low concentration acid solution. It is a useful method to solve conventional problems such as the high energy cost of pyrometallurgical treatment and excessive use of strong acids of hydrometallurgical method.
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