Henan Hongji Mine Machinery CO.,LTD. is a high-tech R&D enterprise, which engages in manufacturing and selling mining mechanical equipments such as crushing machinery,grinding machinery,washing&drying machinery,screening&dressing machinery,etc. The company is located in the Mechanical Industrial Park of Zhengzhou City, where is in the transportation junction of central China.Hongji Mine Machiney has the excellent geographical advantage.It is established at 1960.It has built into a comprehensive enterprise that comprises R&D, test, manufacture, sales and service functions.And its main productions include jaw crusher,mobile crusher,impact crusher,hammer crusher,sand making machine,rotary dryer,vibrating screen,vibrating feeder,ball mill,rod mill,etc.If you have the need of these machine,feel free to contact with us.
1,To make the rotary dryer too long to improve the yield. If the diameter is too large, the roller will be not fully used,which will cause heat loss;so the equipment covering an area of large is a waste of resource at a certain degree.
2,The temperature of the feeding and discharging port is too high to improve production, causing a waste of the energy . At…Continue