How a drum dryer works:The organic fertilizer drum dryer can directly dry livestock manure with a moisture content of up to 70%-80% to a safe storage moisture of 13% at one time. The whole process is carried out in a closed system, thereby reducing the pollution to the environment during the drying process. The equipment is mainly composed of a heat source, a feeder, a feeder, a rotary drum, a discharge machine, a material crushing device, an induced draft fan, a discharger and a power distribution cabinet; Under the flipping of the cloth plate copying device, the material is evenly dispersed in the dryer and fully contacted with the hot air, which accelerates the drying heat and mass transfer. During the drying process, under the action of the inclined plate and hot air, the material is discharged to the star-shaped discharge valve in the other section of the dryer to discharge the finished product.
1. Physical and chemical properties of materials:form, water content, water content, crystal water, particle size, bulk density, viscosity, heat sensitivity, softening point, phase transition point, thixotropy, toxicity, corrosiveness, peculiar smell, flammability, explosiveness , static electricity, air permeability, agglomeration, easy crushing of crystals or particles.
2. The drying characteristics of the material, the drying curve, the critical moisture content and the equilibrium moisture content under the proposed drying conditions.
3. The drying output requirements and long-term planning are matched with the entire organic fertilizer npk production line.
4. The influence of material commodity value and drying effect on it. Such as the influence of product moisture, pollution, temperature, wear, pulverization, pulverization, rehydration, etc. on commodity value.
5. Requirements for material recovery rate.
6. In the npk fertilizer manufacturing process, the upper and lower sequence processes of the material drying process.
7. The drying method of the material in the past or the drying method of similar products.
8. Available heat sources (coal, fuel oil, electricity, coal gas, liquefied gas, natural gas).
9. The size of the installation site, with or without special requirements.
10. Environmental protection requirements, restrictions on dust emission, noise, vibration, odor, volatile matter, etc.