The oil absorption value of talc powder is an important technical index, which reflects the absorptive ability of talc powder to oil. The size of oil absorption value directly affects the application effect of talc powder in different industrial fields. Usually, the oil absorption value of talc powder is directly related to its fineness, and the finer the fineness, the higher the oil absorption 10. In practical applications, the oil absorption value of talc can help predict and control the performance of the product, such as in the coatings and plastics industry, where the oil absorption value affects the flow and processing performance of the product.
Talc has excellent physical and chemical properties such as lubricity, viscosity resistance, flow aid, fire resistance, acid resistance, insulation, high melting point, chemical inactivity, good covering power, softness, good luster, strong adsorption force, etc. Due to the crystalline structure of talc is layered, it has a tendency to easily split into scales and special smoothness. If the content of Fe2O3 is very high, it will reduce its insulation.
Talc is soft, its Mohs hardness coefficient is 1~1.5, slippery feeling, {001} cleavage is complete, easy to split into flakes, natural resting Angle is small (35°~40°), extremely unstable, surrounding rock is silicified and slippery magnesite, magnesite, lean ore or dolomitic marble, except a few moderately stable, generally unstable, joints, cracks development, The physical and mechanical properties of ore and surrounding rock have great influence on mining technology.
