ARTÍCULO
TITULO

Response surface methodology for optimization of copper leaching from a low-grade flotation middling

Jian Liu    
Shuming Wen*    
Dan Liu and Mengyang Lv: Researcher    
professor    
lecturer and master    
Faculty of Land Resource Engineering    
Kunming University of Science and Technology    
Kunming    
China Lijun Liu: Master    
Key Laboratory of Unconventional Metallurgy (    

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