Hydrocyclone Desilter is the third phase solid control equipment, the common using cones are 4 inch and 5 inch. The separation size is 15-47μm. According to users’ treating capacity requirement, we can choose a certain number of cones. Desilter is widely used in oil drilling fluid solid control equipment, HDD mud recycling etc. Hydrocyclone desilter has two types, one is contain bottom lillte shakers, the other is without bottom shaker type. If the drilling fluid is heavier drilling fluif, thus can not use the hydrocyclone desilter, for the desilter can remove parts of barites.