Cationic polymer organic coagulant is also called organic coagulant. Through electric neutralization, adsorption and bridging, colloidal particles and micro suspended solids in water are unstable and agglomerated. When used alone or in combination with polymer flocculants, the coagulation, coagulation and flocculation of colloid and suspended solids in water are completed. Instead of inorganic coagulant, it is widely used in the process of sedimentation, concentration and dehydration in mineral washing industry, realizing the functions of rapid and thorough solid-liquid separation, rapid dehydration of mineral materials and reuse of treated water up to standard.