The hydraulic ceramic plunger slurry pump used in tungsten ore filter presses is mostly a common model such as YB series, which is the core supporting equipment for supplying slurry to tungsten ore filter presses. It can stably and high-pressure transport tungsten slurry containing solid particles to the filter chamber of the filter press, adapting to the working conditions of tungsten ore filter press dewatering. The following is a detailed introduction:

　　The core working principle of adapting to tungsten mining conditions

　　It belongs to the hydraulic driven dual cylinder dual action displacement pump. The motor drives the gear oil pump to convert low-pressure oil into high-pressure oil. The high-pressure oil alternately enters two hydraulic cylinders through the reversing valve, driving the piston and then driving the ceramic plunger to perform reciprocating motion. During the reciprocating process of the plunger, the tungsten ore slurry is sucked and discharged through the inlet and outlet valves of the working cylinder, and continuously transported to the tungsten ore filter press. And the variable displacement pump can automatically adjust to the working conditions of the filter press, maintaining a high flow rate of slurry at low pressure. As the filter cake is formed inside the filter press and the pressure increases, the flow rate of the pump will automatically decrease, always maintaining the set pressure, which meets the pressure and flow change requirements of tungsten ore filter press from feed to press.

　　Outstanding advantages for tungsten ore transportation

　　Super wear-resistant and anti manufacturing: Its plunger is made of alumina ceramic fired and finely polished, with a hardness of HLC8.5 or above, and can withstand the erosion of solid particles smaller than 2mm in tungsten slurry. Moreover, the plunger and tungsten slurry have no shear motion, avoiding the rapid wear of key components of the pump body by hard particles in the slurry, and solving the problem of ordinary pump bodies being easily worn by solid particles in tungsten slurry.

　　High pressure stable supply efficiency: The working pressure of the atmospheric pressure model can reach 2.5Mpa, and the high-pressure model can reach 4.0Mpa. The pressure fluctuation is small, which can ensure that the tungsten slurry is stably pressed into the filter press to form a dense filter cake. Compared with diaphragm pumps, when using it to supply slurry to tungsten ore filter presses, the filter pressing time is shorter, the power consumption can be reduced by 30%, and the quality of tungsten concentrate filter cake can be improved and the moisture content of the filter cake can be reduced.

　　Energy saving and low usage cost: When the variable type is adapted to the tungsten ore pressure filtration process, the flow rate will decrease with the increase of pressure after the pressure rises to the set value, and the motor power will also decrease accordingly. Compared with the quantitative pump slurry, it can save nearly 40% -50% energy. In addition, the vulnerable parts are only valve plates and plunger seals, and the replacement cycle for mining mud is 3-6 months. The overall service life of the equipment is at least 15 years, and the long-term use cost is relatively low.

　　Key application points

　　Selection matching: Tungsten slurry transportation can select corresponding specifications according to slurry concentration and particle size. For example, for processing high concentration slurry from large-scale tungsten ore beneficiation plants, high flow models such as YB200 and YB250 can be selected; If the filter press requires high-pressure pressing, a high-pressure model with a rated pressure of 3.5 Mpa or above can be selected.

　　Operation specification: Pressure adjustment only requires tightening and locking the pressure regulating valve. During transportation, it is necessary to ensure that there are no impurities such as long fibers in the tungsten slurry to prevent valve blockage. At the same time, the oil tank should be selected with anti-wear hydraulic oil that is suitable for the season, with N46 grade used in summer and N32 grade used in winter.

　　Maintenance focus: Regularly clean the possible residual tungsten particles at the inlet and outlet of the slurry valve to avoid poor valve sealing; Add lubricating oil to the sliding parts in each shift, check the smoothness of the cooler water circuit, and prevent the hydraulic oil temperature from being too high and affecting operation; Replace valve plates and plunger seals periodically to avoid slurry leakage.