Zinc Smelting and Refining

In 1995 Merichem’s LO CAT® process was incorporated into an integrated roast-leach-electrowinning zinc production plan. As with any smelting/refining process a multitude of unwanted impurities must be removed from the desired metals product. In this instance H2S is evolved during a Mg leaching stage and the LO CAT® process is utilized to process off gases.