Non-ferrous metals

Lime is a key component in a number of nonferrous metal applications. Both quicklime and hydrated lime are widely used in the flotation or recovery of many non-ferrous ores — in particular, copper ore flotation in which lime acts as a depressant (settling aid) and maintains proper alkalinity in the flotation circuit.  In the recovery of mercury from cinnabar, lime is used to remove sulfur.  Lime is also used in the flotation of zinc, nickel, and lead-bearing ores.  It is often used as a conserving agent to assist in the recovery of xanthates, another flotation chemical.

Lime is also extensively used in the recovery of gold and silver in the cyanide leaching process to curtail the loss of cyanide, a costly dissolution reagent, and for pH control.  In addition, lime products are used in effluent and tailings treatment, and in settling, dewatering, filtration, environmental protection and mine safety.

We offer a wide range of lime products of appropriate purity and reactivity for process optimization and metal recovery.

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