Rail transportation of inclined shafts is an integral part of mine transportation and an important link in safe production of coal mines.According to the requirements of the coal mine safety regulations, the safety measures of "one slope and three gears" must be set up in the transportation of inclined shafts, namely the car barrier, the automatic anti-sports car device and the vehicle blocking device.Over the decades, the number of casualties caused by accidents involving sports cars in mines has become a "stumbling block" for the development of coal production.Stopper is installed at the bottom of the well head to stop the car because of out of control and decline of machinery, divided into two kinds, often and often closed can effectively stop car fall, avoid the occurrence of major accidents Pneumatic Mine Car Arrested Stopper Pneumatic Mine Car Arrested Stopper,Wheel Stopper Track Arrester,Cast-Iron Mine Car Arrester,Underground Mine Car Arrester Jining Dongda Electromechanical Co.,Ltd. , https://www.coal-mine-equipment.com
CHAD type high gradient magnetic separator
During the period from 1982 to 1990, the mining was developed into a high gradient magnetic separator with Φ1OOOmm and Φ1600mm CHAD. It uses a novel magnetic structure that separates in the cavity of the solenoid coil by means of a corrosion-resistant soft magnetic medium. The advantages are: short magnetic circuit, less magnetic leakage, high magnetic induction intensity, high gradient, high sorting efficiency, especially high recovery rate of fine-grained weak magnetic minerals (more than SHP type strong magnetic field magnetic separator) good).
It is mainly used for fine weakly magnetic minerals (coefficient than the magnetization of not less than 40 × 10-6cm 3 / g) as hematite, manganese ore and some non-ferrous metal ore sorting wet, also suitable for refractories, Iron removal of insulating materials and other non-metallic materials.
The specifications and technical parameters of the machine are listed in the table below. The outline and installation dimensions are shown in Figures 1 and 2.
Model meaning example CHAD-8: C - magnetic separator, H - ring, A - no iron core, D - electromagnetic, 8 - sorting ring center circle diameter (dm).
   figure 1   figure 2    table