1. Drying characteristics of materials - drying curve, critical moisture content, and equilibrium moisture content under the selected drying conditions.
2. Physical and chemical properties of materials - morphology, moisture content, water containing properties, crystalline water, viscosity, thermal sensitivity, toxicity, corrosiveness, odor, flammability, explosiveness, etc
3. The impact of material commodity value and drying effect on it.
4. Requirements for drying yield and long-term planning.
5. The top-down process of material drying.
6. Requirements for material recovery rate.
7. Available heat sources (coal, fuel oil, electricity, coal gas, liquefied gas, natural gas)
8. Drying methods for materials in the past or similar products.
9. Environmental requirements - restrictions on dust emissions, noise, vibration, odors, etc.
10. Is there any special requirement for the size of the installation site.
11. User's operator level and maintenance ability.
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