Gypsum Raymond Mill 600 Mesh Hd9720 Guilin Hangda Mining. Application of HD9720 Raymond Mill. With scientific amp reasonable design and its unique advantages,HD9720 Raymond Mills are applied widely in power, metallurgical, cement, chemical and non-metallic industry, for grinding of various materials, such as cement raw material, clinker, limestone, slag, manganese, gypsum, coal, …