Hydrocyclone separator is the equipment used for separating and removing heavy mud and sand of coarse particles and sometimes for dehydration of slurry. The Hydrocyclone separator has two types of pressure type and gravity type and is made up of either cylindrical structure or metal pipe. Water is fed through the top of structure (or metal pipe) by means of pressure or gravity along the tangent line. Coarse and thick particulate matters are thrown to the wall, rotated down and discharged together with the concentrated liquid formed under the action of centrifugal force. Small particulate matters are discharged together with secondary upward vortex after rotated to some extent.
after pumped into the cylinder by sand pump (or height difference) at certain pressure (generally 0.5-2.5kg/cm) and flow velocity (around 5-12m/s) through the ore feed pipe and along the tangential direction, the pulp will rotate along the cylinder wall quite fast to generate substantial centrifugal force. Under the action of centrifugal force and gravity, thick and heavy ore grains are thrown to the wall, moved down along track of the spiral line and discharged out of the sand discharge nozzle at the cone bottom. While fine ore grains form ascending pulp flow with water at the cone center that is later discharged out of the overflow pipe. Compared with mechanical classifier, the hydrocyclone separator has such advantages: no moving part, simple construction; large productivity per unit volume; little area occupation; high grading efficiency (up to 80%-90%); fine grading size; low cost; few consumption of materials. Its shortcomings are quick wear of parts; large power consumption; substantial effect of ore feeding pressure, concentration and particle size on grading indicators.
its upper section is a cone. On the cylinder, an ore feed pipe in tangential direction with the cylinder wall is installed. A center overflow pipe connected with cylinder section is installed on the cone and the top of the overflow pipe is connected with external pipeline through surge chamber or connected directly for discharge of overflow. At the bottom of the cone, there is a sand settling nozzle to discharge coarse settled sand. Ore feed port, sand settling nozzle and cylinder inner wall are lined with wear-resisting rubber or wear-resisting materials like diabase, cast stone, and silicon carbide.