Thickness approximately 30mm filter cake lithium fluoride disc dryer

I. Operating Conditions

The production line produces lithium fluoride (LiF), which forms a filter cake after being filtered through a filter press. This filter cake then undergoes a drying process to meet the finished product standards.

II. Process Parameters and Equipment Requirements

1. Material:

Name: LiF(s)

Median particle size: 30μm

Material form: filter cake with a thickness of approximately 30mm

2. Filter cake:

Liquid composition: H2O

PH: equal to 7 (neutral)

Temperature: approximately 10°C

Moisture content: approximately 25%

3. Equipment:

Daily output: 2t/day (after drying)

Finished product moisture content requirement: <0.03%

Material requirement: 316L for parts in contact with materials.

Quantity: 2 units

The equipment operates continuously for drying, reducing the need for manual intervention.

III. Existing Drying Methods

Drying method: Oven

Drying temperature: 150°C

Wet content after drying: 0.04%

Thickness approximately 30mm filter cake lithium fluoride disc dryerDescription

Wet material is continuously fed from the feeder onto the **top layer** of drying discs in the dryer. The rabble arm, equipped with rabble blades, rotates to continuously turn and spread the material. The material flows across the surface of the drying disc along an exponential spiral path. On the small drying disc, the material is moved to the outer edge and falls onto the outer edge of the large drying disc below. On the large drying disc, the material moves inward and falls through the central discharge port into the next layer of small drying discs. The small and large drying discs are arranged alternately in an up-and-down configuration, allowing the material to flow continuously through the entire dryer. Heating medium is introduced into the hollow drying discs, which can be in the form of saturated steam, hot water, or thermal oil. The heating medium enters from one end of the drying disc and exits from the other end. The dried material falls from the last layer of drying discs to the bottom of the casing and is finally moved by the rabble blades to the discharge port for removal. Moisture escapes from the material and is discharged through the moisture exhaust port located on the top cover. For the vacuum-type disc dryer, the moisture is extracted through the vacuum pump port on the top cover. The dry material discharged from the bottom can be directly packaged. By adding auxiliary equipment such as fin heaters, solvent recovery condensers, bag filters, dry material recirculation mechanisms, and induced draft fans, the drying capacity can be enhanced. This setup is suitable for drying paste-like and heat-sensitive materials, facilitates solvent recovery, and enables pyrolysis and reaction operations.