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2011•Mining and MetallurgyRequires access

AFFECTING FACTORS STUDY OF AMMONIA LEACHING LOW GRADE ZINC OXIDE ORE

Jianjun Fang

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Abstract

In order to determine the best leaching conditions of ammonia leaching process,through the method of laboratory stirring and leaching,the effecting elements of ammonia leaching refractory zinc oxide ores of Lanping,Yunnan Province are studied.The optimum conditions are obtained as follows:ammonia concentration 3mol/L,ammonium bicarbonate 1.5mol/L,granularity(-0.074mm) about 85%,liquid to solid ratio 4:1,and leaching time 2 h.Zinc leaching rate of 72.4% is obtained under the condition.

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What this paper is about

In order to determine the best leaching conditions of ammonia leaching process,through the method of laboratory stirring and leaching,the effecting elements of ammonia leaching refractory zinc oxide ores of Lanping,Yunnan Province are studied.The optimum conditions are obtained as follows:ammonia concentration 3mol/L,ammonium bicarbonate 1.5mol/L,granularity(-0.074mm) about 85%,liquid to solid ratio 4:1,and leaching time 2 h.Zinc leaching rate of 72.4% is obtained under the condition.

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Available abstract

In order to determine the best leaching conditions of ammonia leaching process,through the method of laboratory stirring and leaching,the effecting elements of ammonia leaching refractory zinc oxide ores of Lanping,Yunnan Province are studied.The optimum conditions are obtained as follows:ammonia concentration 3mol/L,ammonium bicarbonate 1.5mol/L,granularity(-0.074mm) about 85%,liquid to solid ratio 4:1,and leaching time 2 h.Zinc leaching rate of 72.4% is obtained under the condition.

Key concepts: Leaching (pedology), Ammonium bicarbonate, Zinc, Ammonia, Chemistry, Lixiviant, Ammonium, Metallurgy

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