Calcium Carbonate Grinding Machine From Germany
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Immobilization Of Pb Cu And Zn In Contaminated Soil Using . aug 01, 2019 At a milling speed of 500 rpm, and bpr 12, the leaching concentrations of pb, Cu and Zn decreased with increasing milling time as shown in fig. 2.the leaching concentrations of pb, Cu and Zn in untreated soil were 13.92 mg 2.71 mg and 114.31 mg which were 273 times, 2.6 times, and 113 times higher than the class iii level.