Blending particulate materials of different particle size - using size reduction in pin disc mill

摘要

Production of homogeneous masses is achieved by mixing amorphous or finely divided particulate materials (i.e. dusts and powders) with coarser material in a wet or dry state. The two streams are fed into a pin disc mill where they are selectively ground together and mixed. This results in a prod. with a prescribed size range which can then be classified if desired. Opt. included is 1-30% of an organic material (e.g. bitumen) of 100 mu, an inorganic material such as cement with a surface tension reducing agent (such as a fatty alcohol sulphonate), an anti-static material (e.g. linolic acid) and a plastic (such as PVC granules) 3-10% of the components can be mixed in over a period of 1-40 sec. The resulting mixt. is used to make cast blocks for building, refractories or acid-and alkali-resisting purposes. Compsn. for use in the preparation of mixes and blends for making building blocks, protective coatings, paints, etc.