Chrome yellow post-treatment step

After the washing operation is often separated from the mother liquor conduct and merger with the filtering operation, such as the use of the filter can be rinsed after filtered liquor, cake was washed with water, to meet the requirement. Chrome yellow filter cake obtained, the moisture content of approximately 40%, should be dry to prevent color changes. Drying methods are varied, but generally by spray drying and boiling dry. Pulverized and mixed colors is still an indispensable step, although dust, labor protection and other issues to be resolved. Chrome yellow is a soft yet easy to grind pigments, fineness of 325 mesh will be enough to meet the requirements for use.