Rare metals are mostly complex oxide ore, ore grade is low, and often in the same deposits associated, symbiotic many kinds of valuable metal components and, therefore, most of rare metal ores are refractory, and has the following mineral processing characteristics:
① beneficiation process is complicated, and is the variety of mineral processing method of joint processes (for comprehensive utilization and recycling);
② is often used for flotation chemicals such as fatty acids and soaps, great influence on the water quality.
Rare metals, usually refers to the content or distribution of rare metal in nature, they are difficult to extract from the raw material, preparation and application in industry relatively late. But a wide range of uses in modern industry. Rare minerals, including lithium, rubidium, cesium, niobium, tantalum, beryllium, zirconium, and hafnium minerals, mineral resources in this part of the common low abundances in the crust, each with different physical and chemical properties, RB no minerals, in symbiosis with CS or in the lattice of minerals, hafnium HF in addition to form stone, a more dispersed in zirconium minerals. Their distribution is also very scattered, extracted from the ore difficult.