Double Cone Blender

 

 

The Double Cone Blender is used to produce homogeneous solid-solid mixture. Mixing is a common process step in the manufacture of products for industries such as healthcare, food, chemical, cosmetics, detergents, fertilizers and plastics.

Examples of materials or substances mixed in this way include pharmaceutical granules, semolina flour, seeds, starch, coffee beans and ground coffee, cocoa, chocolate flakes or granules, powdered milk, baby food, preparations to make dehydrated soups and creams, leaf waxes, detergent granules, soap flakes, artificial fertilizers, plastic in powder, ground or pellet form, fibre glass

 

Double cone blender Working principle

The main body of the blender consists of two cone-shaped sections welded at their bases to a central cylindrical section. The axis of rotation is perpendicular to the cone axis and passes through the cylindrical section. The driving motor is located at one of the two lateral supports holding the blender body.

The solids are introduced into the blender through the loading aperture. In this type of blender, mixing takes place axially, as a result of the powder moving through the different sections. Mixing is thorough but it depends on the rotating speed.

The mixture is discharged through a hermetically closing butterfly valve which can be operated manually or automatically.
The unit is provided with a guard rail with electrical safety to prevent the operator from accessing it when in operation. If anyone should gain access to the unit, for safety reasons, the operation will cease.

Design and features

The series consists of 6 models with a total capacity of 160 to 4200 liters and a useful capacity of 65% of the total.
This blender is especially designed for sensitive mixtures with risk of breakage where the generation of dusts is to be avoided.
Mixing times vary between 5 and 20 minutes depending on the mixture.
The interior of the blender incorporates a cone mounted on the pivot axis on both sides. This system eliminates the formation of dead spaces and facilitates gravity discharge.
The unit is manufactured in AISI 316 (EN 14404) quality for all parts in contact with the product and AISI 304 (EN 14301) for the supports and the rest of the equipment. The internal and external surfaces have a bright polished finish. Due to the polished surface and absence of edges or corners, the unit can be easily cleaned either manually or automatically with CIP system.
The unit incorporates a guard rail with electrical safety, according to EC safety standards.

Materials

Parts in contact with the product AISI 316 (EN 14404)
Structure and other metal parts AISI 304 (EN 14301)
Internal finish Bright polish
External finish Bright polish

Options

This unit allows the incorporation of a liquid spray system to introduce liquids in spray form during the process. The injector is connected to the spray nozzles by means of a rotary system and is fed with additives from a pressurized tank or by means of a variable displacement pump at constant pressure.
The automatic stop positions are: loading, discharging, and sampling. Before stopping at one of these three positions, the system performs a cycle which slows down the mixer in order to reach the stopping position with the highest possible accuracy and remains halted at that point.
The unit can be equipped with an automated loading system for introducing powders and granules into the blender body by means of a vacuum unit with self-cleaning hoses. It prevents creation of dust.
The skid can also be provided with a complete mono block vacuum unit with liquid ring pump.
It is possible to install an automated vacuum discharge system. It includes a product receiving hopper with an automated
self-cleaning filter; as well as a control panel for the unit.
The loading/discharge can be carried out with pneumatically actuated retractable hermetic bellows. This system and the vacuum loading/discharge can be combined.

Lab Double Cone Blender FAQs

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Q1. What is a Lab Double Cone Blender?

It is a compact laboratory-scale powder blending machine featuring a double cone-shaped rotating vessel that tumbles pharmaceutical powders, Ayurvedic herbal blends, and nutraceutical formulations through gentle tumbling action — achieving homogeneous blend uniformity in small batch sizes for R&D, formulation development, and pilot production in pharmaceutical, Ayurvedic, and cosmetic manufacturing environments.

Q2. How does a double cone blender work for pharmaceutical and Ayurvedic powder blending?

The double cone vessel rotates around its horizontal axis — tumbling the powder batch through continuous end-to-end and radial mixing motions that gently fold and recombine particles throughout the blend — achieving uniform powder distribution without the mechanical shear or particle damage that can occur with more aggressive blending equipment.

Q3. Why is a lab double cone blender preferred for Ayurvedic herbal powder blend development?

The double cone blender's gentle tumbling action is ideal for Ayurvedic herbal formulations because it blends delicate botanical particles, plant extracts, and multi-herb powder combinations without generating excessive heat, mechanical shear, or electrostatic charge — preserving the physical integrity and therapeutic potency of sensitive Ayurvedic herbal active ingredients during the blending process.

Q4. Is the Lab Double Cone Blender suitable for pharmaceutical R&D and formulation development laboratories?

Yes, it is one of the most essential pieces of equipment in pharmaceutical R&D laboratories — used for developing and optimizing tablet and capsule powder blend formulations, evaluating excipient compatibility, conducting blend uniformity studies, and producing pilot batch blends for stability testing, analytical validation, and clinical trial material preparation.

Q5. Can cosmetic and nutraceutical R&D teams use a lab double cone blender?

Absolutely — nutraceutical formulation scientists and cosmetic powder product developers use lab double cone blenders to develop uniform vitamin and mineral supplement blends, beauty powder formulations, cosmetic color cosmetic blends, and wellness supplement powder mixes for pilot batch evaluation before scaling to commercial production blending equipment.

Q6. What batch sizes does a Lab Double Cone Blender typically handle?

Laboratory double cone blenders are available in vessel capacities from 5 liters to 100 liters — covering the batch size range needed for small R&D formulation development, exhibit batch preparation for AYUSH licensing, clinical trial material blending, and small-scale initial commercial production in pharmaceutical, Ayurvedic, and nutraceutical manufacturing.

Q7. What types of powder materials can be blended in a lab double cone blender?

The machine blends free-flowing pharmaceutical powders, granules, herbal botanical powders, fine nutraceutical blends, multi-component Ayurvedic formulations, vitamin and mineral premixes, and cosmetic powder formulations — with optimal performance for materials with similar particle sizes and bulk densities that respond well to gentle tumble blending action.

Q8. Is the Lab Double Cone Blender GMP compliant for licensed pharma and Ayurvedic laboratory use?

Yes, it is manufactured with GMP-compliant SS 316 inner vessel construction with mirror-polished internal surfaces, SS 304 outer frame, and easily removable vessel design for thorough cleaning — meeting the material, hygiene, and surface finish standards required for AYUSH-licensed Ayurvedic and Schedule M pharmaceutical laboratory powder blending operations.

Q9. How does the double cone blender achieve uniform blend homogeneity for multi-component formulations?

The double cone geometry creates three-dimensional powder movement during rotation — with powder cascading from both cone ends toward the central cylinder and back — ensuring all components in multi-ingredient pharmaceutical, Ayurvedic, and nutraceutical formulations are thoroughly intermixed to achieve the blend uniformity required for tablet weight uniformity and capsule fill consistency.

Q10. What blending time is typically required to achieve homogeneous blends in a lab double cone blender?

Blending times vary by formulation — typically ranging from 10 to 30 minutes at optimized fill volumes and rotation speeds — with blend uniformity validation studies performed using content uniformity sampling to confirm that each pharmaceutical or Ayurvedic formulation achieves the required degree of homogeneity within the established blending time parameters.

Q11. Can the lab double cone blender handle lubricant addition for pharmaceutical tablet compression blends?

Yes, the gentle tumbling action of the double cone blender is ideal for lubricant addition — with magnesium stearate and other tablet lubricants added in a final short blending step after the main blend is homogeneous, preventing over-lubrication that can occur with more aggressive blenders and maintaining optimal tablet compression properties.

Q12. How does the lab double cone blender support Ayurvedic manufacturers during AYUSH product licensing?

A validated lab double cone blender with documented blending parameters and blend uniformity data provides the formulation development evidence required by AYUSH licensing authorities — demonstrating that Ayurvedic multi-herb powder formulations achieve consistent blend homogeneity in pilot batches that can be reproduced during commercial scale manufacturing.

Q13. What is the optimal fill volume for a double cone blender to achieve the best blending results?

The optimal fill volume for a double cone blender is typically 40 to 60% of the total vessel capacity — this fill range allows adequate powder movement and tumbling action throughout the blending cycle, with insufficient fill levels causing poor mixing and overfilling preventing effective powder cascade and blend homogeneity.

Q14. Can the lab double cone blender handle moisture-sensitive Ayurvedic herbal and pharmaceutical formulations?

Yes, laboratory double cone blenders can be operated in controlled humidity environments or fitted with nitrogen blanketing systems — protecting moisture-sensitive Ayurvedic herbal powders, hygroscopic pharmaceutical excipients, and humidity-sensitive nutraceutical formulations from atmospheric moisture exposure during the blending process.

Q15. How easy is it to clean and validate cleaning of a lab double cone blender between different product batches?

The double cone vessel features smooth mirror-polished SS 316 internal surfaces and a large removable access port — enabling thorough manual or CIP cleaning between product batches, with cleaning validation swab and rinse sampling straightforward due to the accessible vessel geometry and smooth surface finish required for multi-product pharmaceutical and Ayurvedic laboratory blending operations.

Q16. What speed control features does the lab double cone blender offer for different formulation requirements?

The machine features variable speed control — typically adjustable from 5 to 25 RPM — allowing operators to optimize rotation speed for different powder densities, particle sizes, and blend formulation types, with lower speeds preferred for fragile Ayurvedic herbal particles and higher speeds used for dense pharmaceutical granule blend homogenization.

Q17. Can the lab double cone blender be used for blending wet granules before drying in pharmaceutical manufacturing?

No, the double cone blender is specifically designed for dry powder and granule blending — wet granule mixing is performed in separate planetary mixers or granulators — however, the double cone blender is commonly used after fluid bed or tray drying to blend dry granules with extra-granular excipients and lubricants before tablet compression or capsule filling.

Q18. What space and utility requirements does a Lab Double Cone Blender need in a pharmaceutical facility?

The lab double cone blender has a compact footprint suitable for standard pharmaceutical and Ayurvedic laboratory spaces — operating on a 220V single-phase or 440V three-phase power supply — with laboratory-scale models requiring minimal floor space and utility connections, making them accessible for small pharma R&D labs, Ayurvedic formulation centers, and nutraceutical development facilities.

Q19. Does Abster Equipment provide installation, blending validation support, and after-sales service for lab double cone blenders?

 

Yes, Abster Equipment provides complete on-site machine installation, operational training for laboratory staff, blending parameter guidance, cleaning validation methodology support, IQ/OQ documentation assistance, and prompt spare parts and seal replacement availability — ensuring your lab double cone blender delivers consistent and reliable powder blending performance for all your pharmaceutical, Ayurvedic, and nutraceutical formulation development needs.

Q20. How can I get a price quotation or arrange a demonstration of the Lab Double Cone Blender?

 

Simply contact Abster Equipment through their official website with your required vessel capacity, powder formulation type, blending batch size, GMP laboratory requirements, and facility details — their knowledgeable technical sales team will promptly provide a competitive and tailored quotation and arrange a convenient live demonstration or detailed product walkthrough to help you select the ideal lab double cone blender for your pharmaceutical, Ayurvedic, or nutraceutical formulation development and pilot production requirements.