The sliding parameters of bentonite may not involve most industries. Strictly speaking, sliding is not a parameter, but a product feeling. When using bentonite, some industries will involve the concept of sliding: cosmetics, graphite, paint, water-based coatings and other industries. So what are the factors that affect the smoothness of bentonite and how to improve the smoothness of bentonite in production.

   1. Impurity content: the impurity content of bentonite has a great impact on its smoothness, especially for some impurities with higher hardness, such as silicon dioxide, the higher the smoothness is, the worse it is.

   2. Molecular layer spacing of montmorillonite: It is well known that the main component of bentonite is montmorillonite, which is a multilayer octahedral structure. According to relevant experiments, montmorillonite has large molecular layer spacing and good smoothness. Therefore, due to different molecular layer spacing, the smoothness of bentonite products produced by the same process is different.

   3. Particle fineness: Another main reason that particle fineness can affect the smoothness is that the finer the better. This factor can be understood through intuitive imagination.

   The specific method to improve the smoothness of bentonite is to take corresponding measures according to the above three factors. Specific measures are as follows:

   1. Purification: enhancing purification capacity is the main way to reduce impurities in bentonite. At present, the more advanced purification process is wet purification, that is, bentonite is made into mud, fully stirred to obtain a precipitated mud layer, and the upper mud layer can obtain high-purity bentonite. The bentonite used here is a calcium-based product, and this wet purification is not advisable.

   2. Select high-quality raw ore: The so-called selection of high-quality raw ore is determined by detecting the interlayer spacing of montmorillonite in bentonite, and selecting minerals with large interlayer spacing.

   3. Fine grinding: fine grinding is the use of advanced grinding equipment to control the product particles to the smallest possible. According to my opinion, there are few domestic manufacturers of ultra-fine bentonite at present.