US4828624A - Cement grinding aid compositions - Google PatentsADVANTAGES OF THE INVENTION. Cement grinding aids have been used for many years, and it is estimated that U.S. consumption of such chemicals is currently 30-40 million pounds per year. Most commercial grinding aids are either waste streams of ethylene glycol or diethylene glycol, or a combination of a glycol and.crude glycol cement grinding aid,crude glycol cement grinding aid,US5429675A - Grinding aid composition and cement product .The grinding aid composition is composed of a mixture of at least one alkylene ether glycol and particulate carbon. . The present invention is directed to a novel grinding aid for forming hydraulic cement powder from clinker raw material and to the method of forming an improved hydraulic cement product. The term cement.