Prepare
Washing, sorting, blanching, pre-cooling and surface-water removal are selected around the raw material.
SLD SERIES / CONTINUOUS IQF FREEZING
Fluidized Bed IQF Freezer
Free-flowing frozen fruit and vegetables, engineered around your product and production target.
IQF separationDesigned for loose, portionable product
Controlled airflowAir movement matched to the food
Complete linesPreprocessing through packing
Project sizingCapacity confirmed by test basis
THE SLD FREEZING METHOD
Individual pieces move through a controlled cold-air environment.
The freezer platform combines airflow, belt movement and product-specific settings to help reduce sticking and maintain a consistent process from feed to discharge.
Small pieces remain more separate during freezing
Continuous production for export food factories
Food-contact construction designed around hygiene and cleaning
Refrigeration package matched to project conditions
FROM RAW MATERIAL TO PACKED PRODUCT
One process, three practical stages.
Fluidize
Controlled upward cold air and belt movement separate small pieces through the freezing zone.
Pack
A stable free-flowing product moves into weighing, packing and cold-chain handling.
APPLICATIONS
Built around the food you need to freeze.
Berries and strawberries
Delicate fruit that needs separation and careful surface handling.
Diced fruit and dates
Mango, pineapple, dates and other pieces with different moisture and sugar levels.
Broccoli and green vegetables
Blanching, cooling and fluidized IQF freezing help maintain the color and loose separation of broccoli florets and cut vegetables.
OPERATION VIDEO
See the SLD freezer in motion.
The actual freezing behavior depends on product size, moisture, inlet temperature and target core temperature. Send us your process basis for a tailored recommendation.
TECHNICAL PARAMETERS
SLD Fluidized Bed IQF Freezer Series.
Reference data below is based on the supplied SLD series technical parameter sheet. Actual capacity and configuration depend on the product and confirmed project conditions.
| Model | Capacity (kg/h) | Overall dimensions (m) | Freezing room length (m) | Installation power (kW) | Refrigeration capacity (kW) |
|---|---|---|---|---|---|
| SLD-500 | 500 | 7.0 × 3.8 × 4.05 | 5.0 | 30.9 | 95 |
| SLD-1000 | 1000 | 8.0 × 4.5 × 4.05 | 6.0 | 46.3 | 165 |
| SLD-1500 | 1500 | 10.0 × 4.5 × 4.05 | 8.0 | 61.4 | 245 |
| SLD-2000 | 2000 | 11.04 × 4.5 × 4.05 | 9.0 | 74.2 | 325 |
| SLD-3000 | 3000 | 14.5 × 4.5 × 4.05 | 12.5 | 101.7 | 490 |
Inlet material temperature: +15°COutlet material temperature: -18°CFreezing temperature: ≤ -33°CFreezing time: 4–40 min, variable frequency regulationRefrigerant: R22 / R404A / R717
FAQ
Questions about fluidized bed IQF freezing.
Need a model recommendation? Send us your product and production target, and we will confirm the suitable process basis.
What products can be frozen in a fluidized bed IQF freezer?
The SLD series is suitable for small and particulate foods such as berries, diced fruit, broccoli florets, peas, beans, cut vegetables, dates and similar products. Final suitability depends on piece size, moisture, inlet temperature and target core temperature.
What is the capacity range of the SLD series?
The supplied SLD technical table lists models from SLD-500 to SLD-3000, with reference capacities from 500 to 3,000 kg/h. Capacity is confirmed against the actual food product and operating conditions.
What is the typical freezing time?
The supplied SLD series parameter sheet states a reference range of 4–40 minutes with variable-frequency regulation. Actual freezing time changes with product type, piece size, moisture and target temperature.
What inlet and outlet temperatures are required?
The supplied reference table uses +15°C inlet material temperature and -18°C outlet material temperature. These are design-basis values and should be confirmed for each project.
What is the difference between semi-fluidized and fully fluidized freezing?
Semi-fluidized freezing uses controlled airflow and product movement for products that need gentler handling. Fully fluidized freezing provides stronger lifting and separation for suitable small pieces. The selection depends on the food and process test results.
Can the freezer be integrated with a complete preprocessing line?
Yes. The freezer can be combined with washing, sorting, blanching, water pre-cooling, ice-water cooling, dewatering, air drying, vibration feeding, weighing and packing equipment.
How is the refrigeration system selected?
Refrigeration capacity, refrigerant and operating conditions are selected according to freezer model, product load, ambient climate, local utilities and the final project design.
Can the freezer be customized for strawberries, broccoli, mango or dates?
Yes. These products can require different airflow, belt speed, handling and preprocessing settings. We confirm the design basis before recommending the configuration.
What information is needed for a quotation?
Please provide the product, piece size, target hourly output, inlet temperature, target core temperature, operating hours, factory location, available space and any existing preprocessing equipment.
Do you provide installation and commissioning support?
Kanglong can support layout discussion, equipment configuration, installation guidance, commissioning coordination and after-sales technical communication for export projects.
ENGINEERED COMPONENTS
The freezer is a coordinated system, not a single box.
Airflow, evaporator arrangement, conveying, agitation, insulation and refrigeration are selected together for the final product and plant conditions.
Conveying and agitation
Controlled belt movement and product agitation help reduce sticking and keep the frozen pieces more free-flowing.
Evaporator and fans
High-volume air circulation is arranged around the usable freezing area and the required product load.
Refrigeration package
Cold source selection considers freezing duty, ambient climate, utilities and the operating conditions of the project.
REPRESENTATIVE PROJECT BASIS
4,000 kg/h strawberry IQF line concept.
The supplied strawberry concept combines three bubble pre-washing stages, inspection, vibration dewatering, air-assisted conveying, vibration feeding and a two-stage SLD fluidized-bed freezer.
Designed around frozen strawberry output
Preprocessing and freezing planned as one flow
Final equipment and utilities confirmed during engineering
MATCHED EQUIPMENT
Complete the line around your raw material.
COMPLETE FREEZING LINES
Complete production solutions for fruit, vegetables and potatoes.
Explore each line as a complete process, then open the linked equipment below to review individual product details.
Strawberry IQF Freezing Line
A gentle route from bubble washing and selection to dewatering, distribution, fluidized freezing and packing.
View complete solution
Fruit and Vegetable IQF Line
A flexible line for broccoli, peas, diced fruit and other products requiring washing, blanching, cooling and loose IQF freezing.
View complete solution
French Fries Freezing Line
Potato peeling, cutting, blanching, cooling, dewatering, IQF freezing and packing arranged as one continuous process.
View complete solution
REQUEST A PROJECT BASIS
Tell us what you need to freeze.
Include the food, piece size, hourly output, inlet temperature, target temperature and available factory space.