Finer particles absorb more moisture, which results in caking. The prills or granules may be further dried, cooled, and then coated to prevent caking. Anticaking agents are chemical compounds that prevent caking. By the output of volatile substances and caking ability, the coal is hard (non-bituminous). By the output of volatile substances and caking ability, rich coals prevail. By the output of volatile substances and caking ability, long-flame coals prevail. Anticaking agents are commonly added to control caking. Polymorphic phase transitions can also induce caking. Another cause is lymphoma, in which omental caking is usually associated lymphadenopathy. Caking mechanisms depend on the nature of the material. Caking properties must be considered when designing and constructing bulk material handling equipment. Caking is a consequence of chemical reactions of grain surfaces. According to Chainey (2018), soul caking is still very popular in Cheshire. Caking is a powder's tendency to form lumps or masses.