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| New dressing-metallurgy technology study on low grade lead-zinc oxide ore in Yunnan province |
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Received:October 13, 2017
Revised:October 17, 2017
Accepted:October 23, 2017
Published Online:September 30, 2018
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| DOI： |
| KeyWord:Low grade;Zinc oxide ore; Preconcentration;Dressing-metallurgy combination |
| Author | Institution |
| Xu Jin |
Faculty of public safety and emergency management,Kunming University of Science and Technology Kunming |
| Zhang Xiaolin |
Faculty of land and resources engineering,Kunming University of Science and Technology Kunming |
| wang qihong |
State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology |
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| Abstract: |
| The new dressing-metallurgy combination process of preconcentration-zinc removing calcium by flotation and hydrometallurgy has been put forward. The good experiment indicator of Zn grade 18.09% and recovery 77.57% are gained through twoSstageSrougher after desliming when the grinding fineness of -0.074 mm content is 85%, the dosage of Na2S is 8000 g/t and the combined inhibitor dosage of sodiumShexametaphosphate is (100 100 g/t), and sodium silicate is (500 500 g/t), and HHA are used as collector. The content of calcium oxide in rough zinc oxide concentrate has declined from 21.71% to 13.25%, 63.50% calcium oxide impurities in the ore have been removed.The experimental results of studies on new dressing-metallurgy combination process signify that 87.43% recovery of total zinc for whole flowsheet that is the good technical index. The composite acid consumption of zinc oxide is only 3.60t / t.Zn that is very low, which reduces significantly the acid consumption of zinc hydrometallurgy process. |
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