How to Select a Vacuum Rake Dryer

First, analyze your material: determine its form (slurry, paste, powder, granules, etc.), viscosity, moisture/solvent content, heat sensitivity/easily oxidized/containing volatile solvents.

Clarify process requirements: including final moisture/residual content requirements, batch size, capacity/processing volume, whether solvent recovery is required, and whether inert/explosion-proof safety requirements are needed.

Refer to equipment parameters: such as heating method (jacket/rake teeth/dual heating), vacuum range, rake blade structure and speed, sealing method, stirring method, condensation/solvent recovery system, etc.

Conduct pilot or experimental tests: conduct small/pilot tests on the target material to determine the appropriate process window, including jacket temperature, vacuum level, rake speed, residence time, and material layer thickness. This is a common method used in the industry.

Consider Vacuum Rake Dryer equipments specifications based on capacity and future expansion: if future production may increase, it is recommended to reserve a certain amount of margin.

Considerations for operating costs, safety, and environmental protection include: energy consumption, steam/heat medium consumption, solvent recovery efficiency, sealing and maintenance, labor intensity, explosion-proof/oxidation-proof/emission control, etc.

Applicable Scenarios - Vacuum rake dryers are most recommended for:

 

Pulp-like, paste-like, high-viscosity materials that are prone to clumping or sticking to the walls;

Products containing solvents or requiring solvent recovery, or products with strict requirements regarding residual solvents;

Heat-sensitive, easily oxidized, temperature-sensitive, or air-sensitive materials;

Small to medium batch production/multi-product switching scenarios;

When there are high requirements for product moisture content or residual solvent content, and a pursuit of uniform drying and high-quality products.

Vacuum Rake Dryer