In the process of crushing, in order to avoid over-grinding and reduce costs, it should be consistent with the principle of “ breaking more and less grinding †. For large-size ore crushing, it must be carried out piece by piece. In beneficiation plant, generally uses two stages or three-stage crushing. According to the different particle size of the broken product, it can be roughly divided into:
Downhole motor is composed of five assemblies: by-pass valve, motor, anti-drop, cardan shaft and drive shaft.
Downhole motor is a kind of downhole dynamic drilling tool upon the power of drilling mud. Mud stream from the
outlet of mud pup flows through a by-pass valve into the motor. This stream produces pressure loss at both inlet and
outlet of the pump to push the rotor into ratating, and to transmit the torque and speed onto the bit. The downhole
motor property mainly depends upon its property parameters.
Drilling Motors,Drill Motor,Mud Motor Drilling,Downhole Drilling Motor Weifang Shengde Petroleum Machinery Manufacturing Co., Ltd. , http://www.sdpetromachine.com
How many stages does the crushing operation take?