Лако-красочные материалы — производство

Separation of the solid particles from the liquid is most likely to be done by a filter press or belt filter, although decantation can be used for washing, as the product settles well. Soluble sulfate and/or nitrate salts, depending on the acid used to dis­solve the cadmium, will also need washing out. This step is important, as the retention of excessive amounts of salts can have a detrimental effect on the prod­uct.