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Help CenterHigh Efficiency Roller Compaction Dry Granulation Pharmaceutical Machinery
Product Spotlights
2. Improved Material Properties
3. Enhanced Product Purity
4. Process Simplicity and Efficiency
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General description of roller compactor:
LG Roller compactor, also known as a dry granulator, is a pivotal piece of equipment in the pharmaceutical, chemical, and food industries. It is used to transform dry powder blends into free-flowing, dust-free granules through a mechanical process without the need for moisture or heat.
Working Principle and Process Flow
The dry granulation process is a continuous and efficient method of powder conditioning, often considered a "lean" manufacturing approach. The mechanism is typically broken down into three core units:
1. Feeding System: Powder is loaded into a hopper and conveyed to the compaction zone, often using a horizontal or vertical feeding screw. Advanced machines may employ twin-screw designs to ensure a steady and consistent feed, preventing material leakage and bridging.
2. Compaction Unit: This is the heart of the machine. The powder is forced between two counter-rotating, high-pressure rollers. These rollers compress the powder into a dense, solid sheet or "ribbon". The compaction force, roll speed, and gap are meticulously controlled to produce a ribbon with the desired thickness and hardness.
3. Size Reduction Unit: The compacted ribbon is then fed into a milling or granulation system. This system uses a rotor and screen to break the ribbon down into granules of a uniform, predetermined size.
Often, a hydraulic system is integrated to provide the necessary compaction force, and a water cooling system is employed to manage the temperature of the rollers during operation.
Key Advantages of roller compactor:
1. Ideal for Heat and Moisture-Sensitive Materials: Since the process requires no water, solvents, or heat for drying, it is the preferred method for materials that are prone to degradation, decomposition, or agglomeration when exposed to moisture and heat.
2. Improved Material Properties: The process significantly increases the bulk density of powders and improves their flow characteristics, which is crucial for uniform filling in downstream processes like tableting or capsule filling.
3. Enhanced Product Purity: As no binders or additives are introduced, the chemical composition of the original powder is preserved, ensuring high product purity.
4. Process Simplicity and Efficiency: With fewer process variables than wet granulation, dry granulation is simpler to validate, optimize, and scale up. The process is also highly efficient and requires less floor space.
Applications of roller compactor:
Roller compactor is widely used across multiple sectors for granulating powders intended for:
Granules for tablets and capsules in the pharmaceutical industry, instant granules of Traditional Chinese medicine.
Food ingredients and health products: Probiotics, fruit powder, tea powder, tea polyphenols, royal jelly freeze-dried powder, collagen, etc
Chemical compounds and fertilizers: Antioxidants, pyrazoles, urea-formaldehyde molding powder, etc
Cosmetics, ceramics, and pigments.
Technical parameters of roller compactor:
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