14 октября, 2015 
Pokraskin Zinc oxide is also produced industrially from purified solutions of zinc sulfate or chloride by precipitating the basic carbonate, which is then washed, filtered, and finally calcined. This method produces a grade of zinc oxide with a high specific surface area.
Products of this type are also obtained from waste hydroxides which are purified by a chemical route and then calcined.
2.3.3.5
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