working principle and features of a rotary drum cooling machine for fertilizer granules

The dried materials are taking from belt conveyor or bucket elevator to the hopper of the rotary drum cooler . Then they go into feed side via the hopper feeder and feeding tube. The feeding tube's gradient is bigger than materials' natural inclination. Then the materials can fluently flow into cooler. The cooler cylinder is a slightly into the sloping and horizontal rotating cylinder, materials add into from a high place airflow flow out from a low place. Counter-current contact with the material.the rotary drum cooling machine is used with fertilizer granulator to make up a organic fertilizer plant or compound fertilizer plant. the rotary drum cooling machine also has airflow and materials flow into cylinder together. With the cylinder turn around, materials go into the low place by gravity. During the materials go advance in the cylinder of the cooling pellet mill directly or indirectly, the material getting the role of cool air flow which makes the hot material cool down, then send off via belt conveyor or screw conveyor. The copy board installed on the cylinder wall plate.the rotary drum cooling machine role is taking materials up and then put them down. This can makes contact surface bigger between materials and airflow. Then it can improve the cooking rate and make the material advanced. After heat carrier go though cooler. the rotary drum cooling machine always need cyclone collect the materials of air carrying off. If it need further decrease the dust content of exhaust gas, it will be need a bag type dust collector or hydrofilter to discharge the exhaust gas.

features of drum cooling machine:

1. Great capacity of production, can be continuous operation.

2. Simple structure, low malfunction, convenient operation, low cost of maintenance,

stable operation.

3. Wide usage, can be used for the drying of different materials in powder, granule, strip,

lump, large elasticity of operation. Output is allowed to have larger fluctuations in

manufacturing, but not allowed to influence the quality of the products.

4. Large equipment, difficult to install and remove , low heat capacity coefficient,

relatively low thermal efficiency

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