Zinc concentrates surplus questioned

Mar 04, 2013 | 12:43 PM | Andrea Hotter

Tags  zinc, zinc concentrates, Paolo Cabrejos Martin, treatment charge, Volcan Cia. Minera, Peruvian miner, Callao port, Andrea Hotter

CANCUN, Mexico — The zinc concentrates market is a lot tighter than it seems due to quality differences and logistical problems, an executive at Peruvian mining company Volcan Cia. Minera SAA told AMM.

"People are talking about piles of concentrates in China, but ... what kinds of concentrates are those? Some of the concentrates, because of quality, cannot go straight to smelters," Volcan commercial manager Paolo Cabrejos Martin said. "There’s a big regional difference between concentrates, and quality is a big issue right now."

Mining companies typically blend concentrates to filter out materials that smelters don’t want, such as arsenic and bismuth. "The typical recoveries have changed as deposits have become more complicated, and offtakers are complaining at the slightest move in quality away from the average," he said. ....

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