Continuous drying of slurry and liquid materials by the precise combination of conduction and convection heat transfer resulting in a final product of fine powder with particle size close to its primary one and extremely low moisture content.
The slurry or liquid material is continuously sprayed into the fluid bed chamber which is filled with 1-3mm diameter ceramic balls. As soon as the material is supplied in the chamber it gets quickly dried by the combination of conduction heat from the heated ceramic balls and by convectional heat from the fluidizing heated air. The fed material will adhere to the flowing ceramic balls, will get instantly dry and during the flowing of the ceramic balls in the fluidized chamber the ceramic balls will collide each other detaching the dried product from the ceramic balls’ surface. As the product gets dried it becomes lighter allowing to be conveyed by the fluidizing air and then discharged through the dust collector or bag filter house.
“SLURRY DRYER” operates continuously rather than in batch mode. This allows mass production operation, increases productivity, minimizes production costs and maintains consistent product quality.
Unnecessary atomization of the slurry/ liquid material.
Wide variety of options such as special grades of stainless steel and surface finishes, customized automation systems, touch operation screen, specially designed frames, closed system for materials that contain flammable solvents, cyclone, rotary valves, etc., resulting in a customized “SLURRY DRYER” to match customer’s particular needs.
The precise combination of convection heat transfer (heated air) and conduction heat transfer (heated ceramic balls) results in a high thermal efficiency.
Compact design and user-friendly operation.
The specially designed swing-type chamber facilitates the cleaning of the perforated plate and interior of the process chamber.
Designed for easy maintenance and long operation life.
Very small adhesion of product on the process chamber’s inner wall.
Heating temperature range: 100°C to 280°C
Rotor speed: 1,500 to 400 rpm (centrifugal force of about 200G)
Heat medium: saturated steam or gas (for burner)
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As an engineering company, OKAWARA’s aim is to develop and provide the optimum combination of quality, safety and environmental technologies that will enhance the value of our customers’ business while also contribute to the progress of society at large.
OKAWARA’s commitment to always provide the best equipment begins with a full understanding of the customer’s product and its unique needs. This often means testing the product to understand its unique thermal profile and handling characteristics. Learning in this process will be applied out through the design, engineering and manufacturing of the equipment.
Customized design requirements often include precise condition for airflow and temperature uniformity, uniformly heated jackets, uniform coefficient of heat transfer, uniform moisture content and temperature distribution throughout the products, customized automation solutions, special grades of steel and surface finishes, energy saving, highly specific PLC based control systems for monitoring among others.
The combination of over 85 years of thermal processing expertise with product test data results in a tailored equipment perfectly matched to the customer’s needs.