Introduction
For pharmaceutical, food and chemical manufacturers, granule quality decides tablet hardness, flowability and final product consistency. A reliable mixer granulator is the equipment that makes this possible, combining dry mixing, wet mixing and granulation inside one closed, GMP-oriented vessel. If you are an international buyer comparing suppliers, checking specifications, or preparing a technical inquiry, this guide explains how a high shear mixer granulator works, what specifications matter, and why manufacturers such as Jiangsu Hongda Powder Equipment Co., Ltd. are trusted by pharmaceutical, food and chemical processors worldwide. You will also find a full technical parameter table, a wet vs. dry granulation comparison, and answers to the questions buyers ask most before placing an order.What Is a High Shear Mixer Granulator?
A high shear mixer granulator is wet granulation equipment that mixes dry powder, sprays liquid binder, and forms uniform wet granules — all inside a single sealed conical bowl. It is also known in the industry as a wet mixing granulator, rapid wet mixer granulator, or wet granulation mixer, and it is one of the most established wet granulation solutions used across pharmaceutical and industrial powder processing.Instead of moving material between separate mixing and granulating machines, the mixer granulator integrates both steps in one unit. This shortens the production cycle, reduces cross-contamination risk, and produces granules with a controlled particle size range of roughly φ0.104 mm to φ1.5 mm (12 to 150 mesh). The resulting granules are irregular in shape with moderate porosity, good compressibility and solubility, and consistent flow — properties that matter directly for downstream tableting and capsule filling.
How Does a High Shear Mixer Granulator Work?
The working process happens in one enclosed vessel and generally follows five stages:• Dry Mixing — Powder is loaded into the conical bowl. The main mixing paddle rotates the material from the vessel wall toward the center, creating a semi-fluid circulating motion for even blending.
• Binder Spraying & Wet Mixing — Liquid binder is introduced through an optional liquid pumping system while the paddle continues mixing, gradually wetting the powder bed.
• Kneading & Soft Material Forming — Continuous friction and kneading between the paddle and vessel wall build stable liquid bridges inside the powder, converting it into a uniform, porous soft mass.
• High-Shear Granulation — A high-speed chopper cuts and shapes the soft material into fine, evenly sized wet granules without forced extrusion.
• Automatic Discharging — The discharge door opens automatically, and centrifugal force from the mixing paddle pushes the finished granules out of the vessel.
Because mixing and granulation happen without transferring material between machines, this method typically reduces binder consumption by around 25% and shortens the drying stage that follows, compared with traditional multi-step wet granulation.
Key Features of Hongda's Mixer Granulator Machine
• Reasonable horizontal cylindrical structure for stable operation and uniform material circulation with no dead corners• Dual-purpose inflation and water-seal system on the drive shaft — inflation sealing during operation, water cleaning after production, with no metal-to-metal contact against the material bowl
• Fluidized granulation that produces nearly spherical granules with good flowability and consistent quality
• Binder and energy savings — up to 25% less binder use than conventional processes, shortening drying time
• High production efficiency — around 2 minutes for dry mixing and 1–4 minutes for granulation per batch
• GMP-oriented integrated process — dry mixing, wet mixing and granulation all take place in one fully closed vessel
• Complete safety protection, including interlocks and protective devices throughout operation
• Frequency-conversion speed control on both the mixing paddle and granulating chopper, allowing operators to fine-tune granule size
Technical Specifications & Capacity Range
Hongda's GHL series mixer granulator covers twelve standard models, from small pilot-scale units to large production batches. All models share the same working principle and sealing design; capacity and motor power scale with barrel volume.| Model | Barrel Volume (L) | Working Volume (L) | Capacity (kg) | Stirring Motor (kW) | Cutting Motor (kW) | Total Power (kW) |
| GHL-25 | 25 | 17 | 8.5 | 2.2 | 1.1 | 5 |
| GHL-50 | 50 | 35 | 17.5 | 4 | 2.2 | 8 |
| GHL-100 | 100 | 70 | 35 | 7.5 | 2.2 | 12 |
| GHL-150 | 150 | 105 | 52.5 | 11 | 4 | 18 |
| GHL-200 | 200 | 140 | 70 | 15 | 4 | 21 |
| GHL-250 | 250 | 175 | 87.5 | 18.5 | 4 | 25 |
| GHL-300 | 300 | 210 | 105 | 18.5 | 4 | 25 |
| GHL-400 | 400 | 280 | 140 | 22 | 5.5 | 30 |
| GHL-500 | 500 | 350 | 175 | 30 | 5.5 | 38 |
| GHL-600 | 600 | 420 | 210 | 30 | 5.5 | 38 |
| GHL-800 | 800 | 560 | 280 | 37 | 5.5 | 45 |
| GHL-1000 | 1000 | 700 | 350 | 37 | 5.5 | 45 |
• Mixing time: 10–15 minutes per batch
• Stirring motor speed: variable, from 0–600 r/min on smaller models down to 80–120 r/min on the largest models
• Cutting motor rotary speed: under 3,000 r/min, with frequency conversion control
• Compressed air pressure: 0.5 MPa
• Compressed air consumption: 30–60 m³/h depending on model size
Applications: Pharmaceutical, Food & Chemical Industries
Buyers across several sectors use this equipment for powder mixing and wet granulation, including:• Pharmaceutical manufacturing — granulating APIs and excipients ahead of tablet compression or capsule filling
• Herbal and traditional medicine powders — wet granulation of herbal extracts and powdered formulations
• Food and food additive production — granulating food powders and functional ingredients for better handling and dosing
• Feed additive processing — forming uniform granules from feed premixes
• Chemical powder processing — wet granulation for chemical powders that require controlled particle size and reduced dust
Wet Granulation vs. Dry Granulation with a Mixer Granulator
Buyers often ask whether wet or dry granulation fits their process better. Both methods aim to improve flowability and compressibility, but they suit different materials and formulations.| Factor | Wet Granulation (Mixer Granulator) | Dry Granulation |
| Process | Powder is bound using liquid binder, then mechanically granulated | Powder is compacted under pressure without liquid, then milled into granules |
| Best for | Materials that tolerate moisture and heat during drying | Moisture- or heat-sensitive materials |
| Granule strength | Strong, uniform granules with good compressibility | Generally softer granules, depending on compaction pressure |
| Equipment needed | Mixer granulator, plus a drying step afterward | Roller compactor or dry granulator, no separate drying stage |
| Typical use cases | Pharmaceutical tablets, food powders, chemical granules | Effervescent products, heat-sensitive APIs, certain chemical powders |
High Shear Mixer Granulator vs. Rapid Mixer Granulator (RMG) — What's the Difference?
In practice, "high shear mixer granulator" and "rapid mixer granulator" (RMG) describe the same core technology and are often used interchangeably across pharmaceutical and industrial equipment catalogs. Both terms refer to a machine that performs high-speed dry mixing, wet mixing and granulation inside one sealed vessel using a main paddle and a high-speed chopper.Some suppliers use "RMG" specifically for pharmaceutical-grade configurations and "high shear mixer granulator" for broader industrial use across food and chemical processing — but the underlying working principle, sealing design and granulation mechanism remain the same. When comparing quotations from different manufacturers, buyers should focus on the actual specifications — barrel volume, motor power, sealing method and construction material — rather than the terminology alone.
Materials & GMP-Compliant Construction (SS304/SS316L)
Contact parts on GMP-oriented mixer granulators are commonly built in SS304 or SS316L stainless steel, depending on the product being processed and the buyer's regulatory requirements. Pharmaceutical-grade projects typically specify SS316L for better corrosion resistance, while general industrial or food-grade applications may use SS304. Because material specification affects both cost and compliance, buyers should confirm the exact grade, surface finish and welding standard required for their project when requesting a quotation.The sealing structure is a core part of GMP-oriented design: the drive shaft uses an inflation seal during operation, so there is no metal-to-metal friction against the material bowl and no risk of metal contamination. After each batch, the same system supports water cleaning, which helps prevent cross-contamination between different products or batches.
Impeller & Chopper Design for Uniform Granule Size
Granule uniformity depends heavily on the interaction between the main mixing paddle (impeller) and the high-speed chopper:
• The main mixing paddle drives the semi-fluid circulation of powder, ensuring even distribution of the liquid binder throughout the batch.
• The high-speed chopper cuts and shapes the wetted material into granules, and its speed can be adjusted to control the final particle size distribution.
• Both components use frequency-conversion speed control, so operators can fine-tune granulation parameters for different formulations without changing hardware.
This combination allows the same machine to process a range of materials — from herbal powders to pharmaceutical excipients — simply by adjusting paddle and chopper speed rather than purchasing separate equipment for each product.
Why Choose Hongda as Your Mixer Granulator Manufacturer
Jiangsu Hongda Powder Equipment Co., Ltd. was established in 1991 and is headquartered in Wuxi, Jiangsu Province, China, on a 13,800-square-meter production site. The company has passed ISO9001 quality management system certification and obtained EU CE certification, and its powder processing equipment — covering crushing, mixing, granulation, drying and conveying — is exported to more than 30 countries and regions, including markets across Europe, North America and Southeast Asia.For international buyers, this means:
• A manufacturer with more than three decades of powder equipment production experience
• In-house engineering covering the full process chain, not just a single machine type
• Export documentation and shipping experience for overseas orders
• A direct international sales team for technical questions and quotations
You can review company background, facility details and export history on the Hongda About Us page.
Customization Options & Batch Sizes
Because buyers process different materials at different production scales, the GHL series mixer granulator is available across a wide batch range — from 25 L (8.5 kg capacity) pilot-scale units up to 1000 L (350 kg capacity) production models. Beyond model size, common customization options include:• Contact part material (SS304 or SS316L)
• Liquid binder spraying system configuration
• Chopper and paddle speed range, matched to specific formulations
• Control system level — manual controls or PLC/HMI automation
• Discharge design and connection to downstream drying equipment
Buyers with an existing production line should share their target output, material properties and any layout constraints when requesting a quotation, so the technical team can recommend the right model and configuration rather than a generic standard unit.
Installation, Operation & Maintenance Support
Because the mixer granulator is a sealed, single-vessel system, installation focuses mainly on utility connections — power supply, compressed air (0.5 MPa) and, where applicable, the liquid binder line. Daily operation is simplified by frequency-conversion controls on both the paddle and chopper, and the built-in water-cleaning function makes batch-to-batch changeover straightforward without disassembling the sealing components.For downstream processing, Hongda also supplies complementary drying equipment, such as its Rotary Vacuum Drying Machine, so buyers can source a more complete wet granulation line from a single supplier rather than coordinating multiple vendors. This can simplify commissioning, spare parts management and after-sales technical support for the full production line.
Certifications & Quality Standards (ISO9001, CE, GMP)
Hongda's quality system is built around three reference points that matter to overseas buyers:• ISO9001 — quality management system certification covering manufacturing and process control
• CE — European conformity certification, in place since 2005, relevant for buyers importing into the EU market
• GMP-oriented design — the mixer granulator's sealed processing vessel, sanitary sealing system and water-cleaning function are engineered to support GMP production environments
Buyers who need documentation for import, tender or regulatory purposes can request supporting certificates directly, and full details are available on the Certificate page.
Mixer Granulator Price Factors — What Affects Cost
Because every buyer's process is different, pricing for a mixer granulator depends on several variables rather than a single fixed number:• Model size and batch capacity — larger barrel volumes require higher motor power and more material, increasing cost
• Construction material — SS316L generally costs more than SS304 due to material and welding requirements
• Automation level — PLC/HMI control systems cost more than basic manual controls but reduce operator dependency
• Optional accessories — liquid spraying systems, explosion-proof motors, or special discharge designs add to the base price
• Certification and documentation — additional test reports or third-party inspection requested for import or tender purposes
• Shipping terms and destination — Incoterms (FOB, CIF, etc.) and destination port affect landed cost
Because of these variables, the most accurate way to get pricing is to submit your batch size, material and any regulatory requirements directly for a project-specific quotation.
Frequently Asked Questions About Mixer Granulators
1. What is the difference between a mixer granulator and a rapid mixer granulator (RMG)?They describe the same core technology — high shear mixing and granulation in one sealed vessel. "RMG" is a term more common in pharmaceutical contexts, while "mixer granulator" or "high shear mixer granulator" is used more broadly across industries. Specifications matter more than naming when comparing suppliers.
2. What particle size can a high shear mixer granulator produce?
The GHL series typically produces granules in the range of φ0.104 mm to φ1.5 mm (12 to 150 mesh). Operators can adjust the chopper speed to shift the particle size distribution within this range for different formulations.
3. Can the mixer granulator be customized for GMP pharmaceutical production?
Yes. The sealed vessel design, inflation sealing system and water-cleaning function are engineered to support GMP-oriented production. Contact part materials, such as SS304 or SS316L, and other configuration details can be adjusted based on your regulatory requirements.
4. What industries use Hongda's mixer granulator machines?
Primary applications include pharmaceutical manufacturing, herbal and traditional medicine processing, food and food additive production, feed additive manufacturing, and chemical powder processing.
5. How long does one granulation batch take?
Dry mixing typically takes about 2 minutes, and granulation takes roughly 1–4 minutes, depending on the formulation and batch size. Total batch time, including binder spraying and kneading, generally falls within the 10–15 minute mixing window listed in the technical parameters.
6. Does Hongda provide export support and OEM/ODM options?
Yes. Hongda has export experience across more than 30 countries and regions, with an international sales team available for technical discussion, customization requests and shipping documentation. Reach out through the Contact Us page with your project details.
Conclusion
Choosing the right mixer granulator comes down to matching batch size, material properties and construction standard to your actual production needs — not just comparing base prices. Hongda's GHL series covers a wide capacity range, from pilot-scale 25 L units to 1000 L production models, with a sealed, GMP-oriented design suited to pharmaceutical, food and chemical processing.If you are evaluating suppliers or preparing a formal inquiry, our technical team can help you confirm the right model, materials and configuration for your project. Contact Us for product details, a project-specific quotation, customization options, samples or technical support.