How to Improve The Sedimentation Effect of The Thickener？
The thickener is one of the common equipment in the beneficiation plant, which can be used for dehydration, concentration, solid-liquid separation, drug removal, and other operations. The working principle of the thickener is to use the gravity of the solid particles to divide the slurry into two parts, the clarified liquid, and the high-concentration sediment. How to improve the sedimentation effect of the thickener is the key to improving the productivity of the thickener.
1. Using flocculants to improve concentration
The size of the ore particles in the slurry is different. The sedimentation speed of the material in the water is related to the particle size. The finer the particle size, the slower the sedimentation rate. Some processes require relatively fine grinding particle size to achieve better sorting indicators. Therefore, how to effectively settle the fine material is the key to improving the precipitation efficiency of the thickener. The use of flocculants can solve the problem of fine material sedimentation. The flocculant can make the materials collide with each other to form flocs, increase the volume and increase the settling speed.
2. The feeding part affects the concentration effect
The ore pulp enters the settlement zone through the feed barrel in the center of the thickener. The design of the feeding port should be moved down so that the degassed slurry directly enters the liquid surface in the tank to prevent the gas from being carried into the slurry during the feeding process. At the same time, in order to ensure the uniformity and stability of the feeding, the feeding pan can be added to the ore sleeve to prevent the feeding slurry from impacting the precipitated ore particles.
3. The bottom structure affects the concentration effect
The bottom structure of the thickener also affects the precipitation efficiency. The main factor that affects the sedimentation efficiency of the thickener is the inclination angle of the bottom of the thickener. In order to discharge the sedimentary slurry at the central discharge port of the bottom of the pool, the thickener is designed in a tapered shape at the bottom. The rake scraper continuously scrapes the ore mud to the discharge port in the center of the pool bottom. The large inclination angle of the bottom cone is beneficial to increase the height of the material compression zone, thereby increasing the discharge concentration of the material. LZZG deep cone thickener can achieve this effect very well.
4. The automatic control system affects the concentration effect
The automatic control system of the thickener includes control devices such as dosing, rake lifting, and underflow pump. Through the automatic control system, the changes between the various slurry layers in the thickener can be monitored, and the operation of the thickener can be more accurately controlled, so that the precipitation effect of the thickener can be improved.