Product Introduction

Introduction to Mining Drying Machine

Wet materials are transported to the hopper by a belt conveyor or bucket elevator, and then enter the feeding end through the feeding pipeline through the feeding machine of the hopper. The slope of the feeding pipeline should be greater than the natural inclination angle of the material, so that the material can flow smoothly into the dryer. The dryer is a rotating cylinder slightly inclined from the horizontal line. The material is added from the higher end, and the heat carrier and material flow together into the cylinder. As the cylinder rotates, the material moves to the lower end under the action of gravity. During the forward movement of the wet material inside the cylinder, it directly or indirectly receives heat from the heat carrier, allowing the wet material to dry, and then is sent out through a belt conveyor or screw conveyor at the discharge end. There is a copying plate installed on the inner wall of the cylinder, which is used to pick up and sprinkle the material, increase the contact surface between the material and the airflow, improve the drying rate, and promote the advancement of the material. Thermal carriers are generally divided into hot air, flue gas, etc. After passing through the dryer, the heat carrier generally needs a cyclone dust collector to capture the materials carried in the gas. If further reduction of exhaust dust content is required, it should be discharged after passing through a bag filter or wet dust collector.

Characteristics of Mining Drying Machine

1. Strong overload resistance, large processing capacity, low fuel consumption, and low drying cost.

2. Adopting the downstream drying method, the flue gas and wet materials enter the dryer from the same side, which can utilize high-temperature flue gas to achieve high evaporation intensity. The outlet temperature of the dryer is low, and the thermal efficiency is high.

3. By using a dispersing device, feeding device, discharging device, and cyclone dust removal device, the phenomena of blockage, discontinuity, unevenness, and return of the dryer feed are eliminated, and the load of the dust removal system is reduced.

4. The dryer adopts a "self-aligning supporting wheel device", which ensures that the matching between the supporting wheel and the rolling ring is always in linear contact, greatly reducing wear and power loss.

5. Adopting open gear transmission, it has the characteristics of reasonable structure, easy operation, long service life, high efficiency, and convenient maintenance.

In the drying production process, downstream operation is mostly used, and its main characteristics are:

1. At the hot end of the dryer, there is a large temperature difference between the material and the hot gas, and the heat exchange process is rapid. A large amount of moisture is easily evaporated, making it suitable for materials with high initial moisture content.

2. After entering the dryer, viscous materials can reduce adhesion and facilitate material movement due to the easy evaporation of surface moisture. When used for drying wet coal, it can prevent high-temperature gas from directly contacting dry coal and causing ignition.

3. The negative pressure at the hot end of the downstream operation is low, which can reduce the amount of air leakage entering the dryer and help stabilize the temperature and flow rate of the hot gas inside the dryer.

4. The feeding and coal supply are located at the same hot end as the dryer, making the workshop layout more convenient.

5. The discharge temperature of the dryer operated in parallel is low, and it can generally be conveyed by a belt conveyor.