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2025-08-14 17:14
2008
The reaction liquid is filtered through plate and frame pressure to obtain lithopone in the form of a filter cake with a moisture content of no more than 45%. It is then roasted in a drying furnace to change the crystal form of lithopone, and is then pickled with sulfuric acid at a temperature of 80°C. Finally, it is washed with water, reinforced with colorants, filtered, dried and ground into powder.
R-996:
In India, purchasers took a wait-and-see strategy because of the concerns about an unpredictable demand pattern following the second wave of the pandemic around the end of September. Whereas in China, producers were heard operating at optimal rates even though export orders were low in July.