Roasted molybdenum concentrates, also known as molybdenum trioxide or industrial molybdenum oxide, generally refers to roasted sand after molybdenum concentrate is roasted. Molybdenum concentrate is usually oxidized and roasted at 630℃~700℃ to convert molybdenum sulfide into industrial molybdenum trioxide, which is the raw material for producing ferromolybdenum and ammonium molybdate. In recent years, China has produced about 200,000 tons of roasted molybdenum concentrates each year, with a value of about 36 billion yuan, of which about 30% is used to produce ammonium molybdate, and then to produce molybdenum chemicals and molybdenum metal products, and the rest is used to process ferromolybdenum raw materials. Roasted molybdenum concentrates are divided into ordinary and high-soluble. In addition, according to the latest national standard classification, it is more refined. In addition to the above two categories, there are also blocks. We will not introduce it in detail here. Today we will mainly talk about the two types of ordinary and high-soluble in detail.