Introduction
Buyers sourcing wet granulation equipment for pharmaceutical, food, or chemical production usually run into the same problem: dry mixing and wet granulation happen in two separate machines, which adds handling time, labor, and cross-contamination risk. A mixer granulator solves this by combining both steps inside one sealed vessel, so powder goes in and uniform wet granules come out without being transferred between machines.Jiangsu Hongda Powder Equipment Co., Ltd. has manufactured powder processing machinery since 1992, with ISO9001:2015 and CE certification, and equipment exported to more than 20 countries. This guide walks through how a mixer granulator works, what specifications to check before ordering, how it compares with related granulation methods, and what international buyers should confirm with a supplier before placing an order.
What Is a Mixer Granulator? (Definition & Working Principle)
A mixer granulator — also called a wet mixer granulator, rapid wet mixer granulator, or high shear mixer granulator — is a single piece of equipment that dry-mixes powder, sprays in a liquid binder, and shears the wetted mass into uniform granules, all inside one closed bowl. It replaces the older method of mixing powder in one machine and granulating it in another.
Hongda's GHL series is a conical-bowl mixer granulator built around a main mixing paddle, a high-speed granulating chopper, a liquid pumping system, an automatic discharge system, and an intelligent control panel. Inflation sealing and a water-cleaning system keep the process dust-free and easy to sanitize between batches, which matters for pharmaceutical and food-grade production.
How a Mixer Granulator Works: Mixing, Wetting & Granulation Process
The complete cycle runs in five stages inside one sealed vessel:• Dry mixing – powder is loaded into the conical bowl and circulated by the main paddle until it reaches a uniform, semi-fluid state.
• Binder spraying & wet mixing – liquid binder is injected through the pumping system while the paddle keeps the powder moving, so wetting is even across the whole batch.
• Kneading & soft-material forming – friction between the paddle and the vessel wall builds stable liquid bridges, turning loose powder into a porous soft mass.
• High-shear granulation – the granulating chopper cuts the soft mass into fine, evenly sized wet granules without forcing material through a die.
• Automatic discharging – the discharge door opens and centrifugal force from the paddle pushes the finished granules out.
On Hongda's GHL series, dry mixing takes about 2 minutes per batch and granulation takes 1–4 minutes, which is roughly 4–5 times faster than older, multi-machine granulation setups. Binder consumption also drops by around 25% compared with traditional wet granulation, which shortens the drying stage that follows — many buyers pair this step with a
rotary vacuum drying machine to dry the granules gently before tableting or packing.
Mixer Granulator Types: High Shear, Rapid Mixer & Wet Granulator Models
In supplier catalogs and buyer inquiries, you will see this equipment listed under several overlapping names: high shear mixer granulator, rapid mixer granulator, wet granulation mixer, and wet granulator machine. These terms generally describe the same working principle — dry mixing plus wet shear granulation in one bowl — with differences mainly in bowl shape, chopper design, and automation level rather than in the core process.If your process only requires dry powder blending, without wet granulation, a standalone high speed mixer may be a simpler and more cost-effective choice than a full mixer granulator line.
Technical Specifications & Capacity (25L to 1000L Models)
Hongda's GHL series mixer granulator is built in twelve standard barrel sizes, from 25L up to 1000L working capacity, so both lab-scale trials and full production runs can use the same process design. The table below lists representative models; full specifications for every size are available on request.| Item | Model | ||||||||||||
| Name | Unit | 25 | 50 | 100 | 150 | 200 | 250 | 300 | 400 | 500 | 600 | 800 | 1000 |
| Barrel Volume | L | 25 | 50 | 100 | 150 | 200 | 250 | 300 | 400 | 500 | 600 | 800 | 1000 |
| Working Volume | L | 17 | 35 | 70 | 105 | 140 | 175 | 210 | 280 | 350 | 420 | 560 | 700 |
| Capacity (according to the proportion) | Kg | 8.5 | 17.5 | 35 | 52.5 | 70 | 87.5 | 105 | 140 | 175 | 210 | 280 | 350 |
| Mixing time | min | 10-15min | |||||||||||
| Stirring Motor Power | Kw | 2.2 | 4 | 7.5 | 11 | 15 | 18.5 | 18.5 | 22 | 30 | 30 | 37 | 37 |
| Stirring Motor Speed | r/min | 0-600r/min | 0-300r/min | 120-170r/min | 100-150r/min | 80-120r/min | |||||||
| Cutting motor power | Kw | 1.1 | 2.2 | 2.2 | 4 | 4 | 4 | 4 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| Cutting motor rotary speed |
r/min | <3000r/min(frequency conversion) | |||||||||||
| Pressure of compressed air | Mpa | 0.5 | |||||||||||
| Consumption of compressed air | m/h | 30 | 54 | 60 | |||||||||
| Total power | Kw | 5 | 8 | 12 | 18 | 21 | 25 | 25 | 30 | 38 | 38 | 45 | 45 |
Key Features of Hongda's GMP Mixer Granulator
• Enclosed, dead-corner-free bowl – the horizontal cylindrical structure keeps material circulating evenly, with no stagnant zones.• Dual inflation & water-seal system – the drive shaft uses inflation sealing during operation and supports water cleaning afterward, avoiding metal-to-metal contact with the product.
• Fluidized granulation – powder moves in a semi-fluid rolling state, producing near-spherical granules with good flowability.
• Lower binder use – roughly 25% less binder than traditional wet granulation, which shortens drying time and cuts material cost.
• Fast cycle time – about 2 minutes for dry mixing and 1–4 minutes for granulation per batch.
• GMP-oriented, single-vessel process – dry mixing, wet mixing, and granulation happen in one closed unit, reducing manual transfer steps.
• Safety interlocks – full protective devices are built in for stable, safe operation.
• Frequency-conversion control – both the mixing paddle and the granulating chopper have adjustable speed for finer control over particle size.
GMP & cGMP Compliance: Why It Matters for Pharma Production
For pharmaceutical, nutraceutical, and food-grade buyers, GMP compliance is not optional — it determines whether the equipment can even be installed in a regulated facility. On the GHL series, the inflation-and-water-seal shaft design blocks dust from entering the sealing cavity and removes metal-to-metal friction against the product, and the system supports water cleaning between batches to prevent cross-contamination.This closed-vessel, easy-to-clean design is what allows a mixer granulator to be described as GMP-oriented equipment, rather than general industrial machinery adapted for pharma use. Buyers evaluating suppliers for regulated markets should always confirm current quality certificates directly with the factory before finalizing a purchase order.
Materials of Construction: SS304 / SS316 / SS316L Options
Contact parts on wet granulation equipment are normally built in stainless steel to meet hygiene and corrosion-resistance requirements, with SS304 covering general industrial and food applications and SS316 or SS316L used where higher corrosion resistance is needed, such as certain pharmaceutical or chemical formulations. Because material grade affects both price and lead time, confirm the exact contact-part material, surface finish, and any polishing standard (such as mirror or matte finish) with Hongda's sales team for your specific application before ordering.Applications: Pharmaceutical, Food & Chemical Industries
The GHL series mixer granulator is used across several process industries, including:
• Pharmaceutical powders and herbal medicine granules for tablet and capsule production
• Food additives and functional food powders
• Feed additives requiring uniform granule size
• Chemical powders that need wet granulation before downstream processing
Because the barrel size range runs from 25L to 1000L, the same process can scale from small R&D batches to full commercial production without changing the fundamental granulation method.
Mixer Granulator vs. Rapid Mixer Granulator (RMG): What's the Difference?
In practice, the terms mixer granulator and rapid mixer granulator (RMG) describe the same core technology: a high-speed impeller and chopper mixing and granulating powder in one bowl. "Rapid" in RMG refers to the short batch cycle time this method achieves compared with older granulation processes, not a separate category of machine. When comparing quotes from different suppliers, it is more useful to compare working volume, motor power, sealing design, and certification than to treat "mixer granulator" and "RMG" as different products.Advantages of Wet Granulation Over Dry Granulation
Wet granulation, as performed by a mixer granulator, is generally preferred over dry granulation when the formulation can tolerate moisture and heat, because it typically produces:• Better compressibility for tableting, due to the liquid-bridge structure formed during kneading
• More uniform granule density and particle size distribution
• Improved flowability from the near-spherical granule shape
• Good solubility and moderate porosity, which suits capsule filling as well as tablets
Dry granulation, by contrast, avoids liquid and heat entirely and suits moisture- or heat-sensitive materials — buyers working with those formulations should compare this equipment against a dry granulator before deciding which process fits their product.
Customization Options: Bowl Size, Impeller Speed & Chopper Design
Since formulations vary widely between customers, Hongda offers customization on several points of the GHL series:• Barrel volume selection across the full 25L–1000L range to match your batch size
• Frequency-conversion speed control on both the mixing paddle and the granulating chopper, so you can fine-tune particle size for your material
• Contact-part material and surface finish based on your product's corrosion and hygiene requirements
• Liquid feeding method and control panel configuration to match your plant's automation level
Share your formulation, target batch size, and any regulatory requirements with the sales team so they can recommend the right model and configuration rather than a one-size-fits-all setup.
Quality Certificates: ISO9001, CE & GMP Certification
Jiangsu Hongda holds ISO9001:2015 quality management certification and CE certification, and its equipment is designed to EN ISO 12100:2010 (safety), EN 60204-1:2018 (electrical safety), and EN 1672:2014 (food machinery hygiene) reference standards. Full documentation, including current certificates, can be provided to support your internal supplier-qualification process.Why Choose Hongda as Your Mixer Granulator Manufacturer
Hongda has specialized in powder processing equipment — grinders, mixers, granulators, screening machines, dryers, and conveyors — since 1992, with a manufacturing base covering roughly 13,800 square meters in Jiangsu, China. Equipment has been exported to more than 20 countries across pharmaceutical, food, and chemical industries. For international buyers, this means:• A single factory that can supply the mixer granulator together with related upstream and downstream equipment (mixers, dryers, screening machines) for a full process line
• Documented quality systems (ISO9001:2015, CE) that simplify supplier audits and import compliance checks
• Direct factory pricing and the ability to customize barrel size, materials, and control systems for OEM/ODM and project-based orders
Installation, Training & After-Sales Support
Overseas installation adds cost and scheduling risk, so Hongda supports remote commissioning through online installation guidance, video walkthroughs, and technical consultation, allowing buyers to install and validate the equipment without necessarily flying an engineer to the factory first. For larger or first-time orders, ask your sales contact what remote or on-site support options are available for your project and timeline.Mixer Granulator Price Factors & How to Get a Quote
There is no single fixed price for a mixer granulator, because the final cost depends on several variables:• Barrel volume and therefore batch capacity (25L lab-scale units cost far less than 1000L production units)
• Contact-part material grade (SS304 vs. SS316/SS316L) and surface finish
• Level of automation — manual control panel vs. PLC-based automatic control
• Certification and documentation requirements for your target market
• Optional accessories, such as a liquid pumping system, dust collection, or integration with a granulator or dryer
To get an accurate quotation, share your target batch size, product formulation category (pharma, food, or chemical), required certifications, and destination country. This lets the factory quote a configuration that matches your actual production needs instead of a generic price.
Frequently Asked Questions
1. What industries commonly use a mixer granulator?
Pharmaceutical, food additive, feed additive, and chemical powder producers use a mixer granulator wherever a formulation needs to move from loose powder to uniform wet granules before tableting, capsule filling, or packing.2. Is a mixer granulator the same as a rapid mixer granulator (RMG)?
Yes, in practical terms. Both describe a high-speed impeller-and-chopper machine that mixes and granulates powder in one sealed bowl; "rapid" simply refers to the short batch cycle time this method achieves.3. What particle size can this equipment achieve?
On Hongda's GHL series, the finished granules typically range from φ0.104mm to φ1.5mm (12 to 150 mesh), and the operator can adjust the final distribution by changing the chopper speed.4. Can the mixer granulator be customized for our formulation?
Yes. Barrel size (25L–1000L), contact-part material, chopper and paddle speed, and control system configuration can all be adjusted based on your product and batch size — share your formulation details with the sales team for a tailored recommendation.5. What certifications does Hongda hold?
Hongda holds ISO9001:2015 and CE certification, with equipment designed to EN ISO 12100:2010, EN 60204-1:2018, and EN 1672:2014 reference standards. Certificate copies are available on request for supplier qualification.6. How long does delivery usually take for an export order?
Lead time depends on barrel size, customization level, and current production schedule. Contact the sales team with your required model and destination country for an accurate delivery estimate.Conclusion
A well-built mixer granulator removes an entire handling step from your production line by combining dry mixing and wet granulation in one closed, GMP-oriented vessel — which means fewer transfers, less contamination risk, and a faster batch cycle. Whether you are scaling up from lab trials or replacing older granulation equipment on a commercial line, matching the right barrel size, material grade, and automation level to your formulation is the key decision before you order.If you are comparing suppliers or preparing a formal RFQ, contact Hongda's sales team with your batch size, product type, and target certifications. They can confirm the right GHL series model, share technical drawings, and provide a formal quotation for your project.