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US 1478347, Mitchell John L, Apparatus for calcining lithopone, published Dec 18, 1923, assigned to Mitchell John L
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Lithopone is produced by coprecipitation of barium sulfate and zinc sulfide. Most commonly coprecipitation is effected by combining equimolar amounts of zinc sulfate and barium sulfide:
Environmental considerations are paramount in these facilities. Waste management strategies are put in place to minimize the environmental footprint. For instance, waste acids generated during the sulfate process can be treated and reused, reducing both cost and environmental impact. Moreover, energy efficiency is a key focus, with many factories investing in renewable energy sources to power their operations.
