china coal0001 1866076028PZ-7B Explosion Proof Dry-Mix Mortar Spray Machine Introduction of PZ-7B Explosion Proof Dry-Mix Mortar Spray Machine PZ-7B Explosion Proof Dry-Mix Mortar Spray Machine is a dry concrete shotcrete machine. This kind shotcrete machine uses the compressed air to convey or high-speed jet concrete mix with a certain proportion to the surface through the pipelines. The concrete mix on the surface set and harden to form concrete support layer. In recent years, shotcrete technology with a simple process, an unique effect, the economic cost and fast construction speed, is widely used in construction, rail and road tunnel construction, mine development, slope reinforcement and other fields. Parameter of PZ-7B Explosion Proof Dry-Mix Mortar Spray Machine Item PZ-7B Output 7m3/h Max. convey dist Horizontal:200m Vertical: 20m Water cement ratio ?¤0.4 Max. Aggregate. size 20mm Hose inner size 64mm Operating air pressure 0.4~0.6MPa Air consumption 8-10 m3/min Rotor  diameter 480mm Motor power Y160m-6-7.5KW Voltages 380v or as your requirement Overall dimension(mm) 1600X700X1150 Whole weight 900kgs