Durable Spiral Classifier , Spiral Sand Washer Optional Automatic Lubrication System

Spiral Classifier with Optional Automatic Lubrication System

     Spiral classifier is one of the beneficiation equipment. Spiral classifier is a kind of equipment for mechanical classification based on the principle that the specific gravity of solid particles is different, so the speed of precipitation in liquid is different. The material powder milled in the mill can be graded for filtering, and then the coarse material is screwed into the mill inlet with a spiral blade, and the filtered fine material is discharged from the overflow pipe. The spiral classifier is referred to as a classifier. There are four types of classifiers: high weir single and double spiral, submerged single and double spiral. The classifier is mainly composed of a transmission device, a spiral body, a trough body, a lifting mechanism, a lower support (bearing bush) and an exhaust valve. Spiral classifiers are widely used in the ore dressing plant to match the ball mill with closed-loop circulation and split-flow ore sand, or in gravity ore dressing plants to classify ore sand and fine mud, as well as to classify the size of the pulp in the metal beneficiation process and to wash the ore.

    Spiral classifier Operating Regulations

1. Before running spiral classifier, please check all parts of the equipment to check whether there is looseness, breakage, and normal voltage or not; And ensure the lubrication is ok, if it is normal, you can start the motor. After the spiral classifier operation is normal, feed the slurry into the tank to start the classification.

2. Before stop the machine, stop feeding, and then turn off the power after the mineral is transported in the tank.

3. When the spiral classifier is running, if an emergency stop is required in case of failure, the lifting mechanism should be started firstly, the spiral blades should be raised above the mineral sediment layer, and then the operation should be stopped. When restart, the screw should be started first. After the screw is stable, start the lifting motor to lower the screw until the lower support comes into contact with the back plate of the water tank. It is strictly forbidden to start the screw blade buried in the mineral sedimentation layer.

     The water tank of this machine is installed at an inclined angle. The inclination angle is determined according to the equipment configuration in the process. The transmission device drives the screw to rotate in the tank. The finely ground slurry enters the tank from the side feed inlet and forms a groove at the lower end of the tank. The surface area and volume of the slurry subsidence area are determined by the inclination of the sink and the height of the overflow weir. The low-speed rotating spiral can play a certain stirring effect. After the slurry is stirred, the light and fine particles are suspended on the top to form an overflow, which overflows from the overflow weir at the end of the water tank and flows into the next beneficiation process; the coarse particles sink to the bottom of the tank to form Sand is transported by spiral to the ore discharge outlet.