Batch Grinding Mills and Pulverizers
from Prater
The 10-Bar fine grinder is for processing materials in explosive environments such as sugar grinding from (4X to 12X) with a single pass mill. These new mills are designed for explosion pressure shock resistance up to 10 bar (145 psi). Ideally, these mills are best suited for heat-sensitive products... [See More]
- Feed: Dry solids; Batch
- Applications: Food processing
from KPM Analytics
Laboratory grinder for rapid preparation of fine and homogeneous samples (all grain types-wheat, barley, rye, etc.) [See More]
- Feed: Dry solids; Batch; Grinds all types of grains: wheat, barley, rye, etc.
- Scale: Lab
- Applications: Food processing
- Type: Hammermill
from EXAKT Technologies, Inc.
An extremely stable, state-of-the-art, electronically controlled design that more than meets your high capacity requirements. Highlights. The EXAKT 120E-450 Rx is a great option for PCAB approved pharmacies and pharmacies adhering to stringent quality standards. This model combines the flexible... [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Scale: Lab; Production
- Applications: Other; Colors, Cosmetics, Electronics
- Type: Dispersion or colloid mill
from MB S.p.A.
BF 120.4. The largest model in the range, built for jobs in large construction sites, suitable for excavators weighing at least 31 tons. Excavator size: 31 tons or more. Weight: 10,800 lbs. Bucket capacity (cubic yards): 1.30. Mouth opening: 47" x 18". Output Range: 1" to 6". Dimensions: 97" L x 65"... [See More]
- Feed: Dry solids; Continuous; Batch
- Scale: Production
- Applications: Construction materials such cement, asphalt, gravel, glass; Ore and mineral processing
- Type: Bucket Crusher
from Fritsch GmbH - Milling and Sizing
For fine comminution of minimal quantities of dry laboratory samples or solids in suspensions. For mixing and homogenisation of emulsions. Input quantity up to 5 ml. Areas of application. Well suited for sample preparation, such as in chemical analysis, chromatography, mass spectrography or x-ray... [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Batch
- Scale: Lab
- Applications: Chemicals; Food processing; Construction materials such cement, asphalt, gravel, glass; Power production applications such as coal milling; Ceramics or abrasives; Foundry sand or shell recovery; Ore and mineral processing; Paints, adhesives, pigment milling & dispersion; Sanitary
- Type: Ball or media mill
from NETZSCH Premier Technologies LLC
Grinding System Macro. The Macro grinding system represents the logical advancement of the John System annular chamber mill with the centrifugal force separation device. The new peg system is designed for high power input in single and multi-pass operation. The grinding system has an intensive... [See More]
- Feed: Solids-liquids - pastes, slurries or moist solids; Batch
- Scale: Production
- Applications: Paints, adhesives, pigment milling & dispersion
- Type: Pin or universal mills
from Jaygo, Inc.
The Altern Mill is uniquely designed, offering a patented grinding chamber and disperser/mill combination for "Super-Fine" grinding. This allows for simple cleaning between formulations, saving time and money. The Mill can be fabricated in stainless steel or special steel alloys. Superior technology... [See More]
- Feed: Solids-liquids - pastes, slurries or moist solids; Batch
- Scale: Lab
- Applications: Foundry sand or shell recovery; Paints, adhesives, pigment milling & dispersion; Sanitary (optional feature)
- Type: Ball or media mill
from Retsch, Inc.
The mortar grinder RM 200 comminutes inorganic and organic substances to analytical fineness. It can mix and homogenize powders, suspensions and pastes. The grinder is also ideal for the uniform trituration of homeopathic and pharmaceutical products. [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Batch; Soft, hard, brittle, pasty
- Scale: Lab
- Applications: Chemicals; Food processing; Metal or smelting; Construction materials such cement, asphalt, gravel, glass; Power production applications such as coal milling; Ceramics or abrasives; Foundry sand or shell recovery; Ore and mineral processing; Other; Ashes, seeds, silicates, yeast cells
- Type: Pressure/Friction Mortar Grinder
from Custom Milling & Consulting, Inc.
The “basket ” style media mill has been the salvation of small batch, rapid changeover industries such as the ink dispersion business. And the CMC Batch Mill line is a great example of this milling platform. The CMC Batch Mill offers efficient, one tank milling of a wide range of... [See More]
- Feed: Batch
- Additional Features: Fixed
- Operation: Operation that mixes solids in a liquid
from Bepex International LLC
The Extructor is a size reduction machine designed for crushing and grinding large frozen blocks or barrels of bulk materials. While processing frozen blocks, the slow speed high torque rotor crushes and fractures the blocks whereas a tearing action is incorporated with pliable products. This size... [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Batch
- Type: Hammermill
- Applications: Food processing
- Operation: Coarse to medium milling accepts 1 to 5 inch feed and produces a +100 mesh product
from Prater
Since 1925, Prater has utilized the most advanced technology and innovative solutions to create state-of-the-art hammermill products that are used around the world. Our exclusive G-Series, Full Screen, Hammermill is specifically designed for applications that require high capacities, power... [See More]
- Feed: Dry solids; Batch
- Type: Hammermill
- Applications: Chemicals; Food processing; Power production applications such as coal milling; Wood, pulp or paper products
- Power / Rotor Speed: 125-300 HP
from KPM Analytics
The CD1 Mill is an ideal laboratory mill to ensure inter-laboratory comparisons (Alveograph from wheat grain for example). [See More]
- Feed: Dry solids; Batch; Soft and hard wheat
- Scale: Lab
- Applications: Food processing
- Type: Roll Crusher
from EXAKT Technologies, Inc.
Performance that meets or exceeds that of much larger production models. Highlights. The EXAKT 120S-450 is rich with features and provides performance that meets or exceeds that of much larger production models. The unique tensioning system minimizes the free play in the roller ball bearings... [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Scale: Lab; Production
- Applications: Other; Colors, Cosmetics, Electronics
- Type: Dispersion or colloid mill
from MB S.p.A.
BF 60.1. The smallest model in the range, ideal for excavators weighing 9 tons or more. Excavator size: 9 tons or more. Weight: 3,300 lbs. Bucket capacity (cubic yards): 0.65. Mouth opening: 24" x 18". Output Range: 1" to 4". Dimensions: 71" L x 41" W x 47" H [See More]
- Feed: Dry solids; Continuous; Batch
- Scale: Production
- Applications: Construction materials such cement, asphalt, gravel, glass; Ore and mineral processing
- Type: Bucket Crusher
from Fritsch GmbH - Milling and Sizing
For fine comminution of dry laboratory samples or solids in suspension. For homogenisation of emulsions or pastes. The Vibratory Micro Mill PULVERISETTE 0 is recommended for sample preparation of RoHS tests (Restriction of Hazardous Substances). Method of operation. The FRITSCH Vibratory Micro Mill... [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Batch
- Scale: Lab
- Applications: Chemicals; Food processing; Metal or smelting; Construction materials such cement, asphalt, gravel, glass; Power production applications such as coal milling; Ceramics or abrasives; Foundry sand or shell recovery; Ore and mineral processing; Paints, adhesives, pigment milling & dispersion; Waste processing or recycling; Sanitary
- Type: Ball or media mill; Impact mills, crushers or breakers
from NETZSCH Premier Technologies LLC
Grinding System Neos. Performance and Efficiency - more than a step ahead!. General. The agitator cooling with the newly-developed Neos grinding system stands for maximum performance, product quality and efficiency. Coupled with the reliable use of extremely small grinding media, you can achieve... [See More]
- Feed: Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Scale: Production
- Applications: Chemicals; Paints, adhesives, pigment milling & dispersion; Other; Battery Materials
- Type: Ball or media mill; Pin or universal mills
from Retsch, Inc.
The RETSCH Ultra Centrifugal Mill ZM 200 is used for the rapid fine size reduction of soft to medium-hard and fibrous materials. Because of the efficient size reduction technique and the comprehensive range of accessories the ZM 200 ensures the gentle preparation of analytical samples in a very... [See More]
- Feed: Dry solids; Batch; Soft, medium-hard, brittle, fibrous
- Scale: Lab
- Applications: Chemicals; Food processing; Metal or smelting; Construction materials such cement, asphalt, gravel, glass; Power production applications such as coal milling; Foundry sand or shell recovery; Ore and mineral processing; Polymers; Other; Bones, drugs, electronic scrap, food
- Type: Impact mills, crushers or breakers
from Custom Milling & Consulting, Inc.
The EXAKT 50 is the workhorse in any product development lab. Its compact size and compact price make it ideal for dispersing small amounts of pigment or chemicals in inks, pastes, thick films, cosmetics, pharmaceutical products and many more applications. The EXAKT 50 is available with the... [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Scale: Lab; Production
- Applications: Other; Colors, Cosmetics, Electronics
- Type: Ball or media mill
from Bepex International LLC
The rugged Pulvocron size reduction machine is ideal for grinding and drying wet cakes or pastes. As a gas-swept mill, incoming gas can be regulated to promote drying, cooling, and inerting for additional processing in the same step. Horizontal design with hinged access door offers easy access to... [See More]
- Feed: Dry solids; Batch
- Operation: Ultra-fine operation producing products less than 325 mesh
- Applications: Food processing; Other; Powders and Cakes
- Additional Features: Fixed
from Prater
Prater Fine Grinders (M Series Mills) are designed to grind dry, free-flowing material as fine as 200 mesh (75 microns) with very tight distribution of particle size. The highly efficient design allows for ease of access to all internals and is well suited for heat sensitive materials such as resins... [See More]
- Feed: Dry solids; Batch
- Type: Hammermill
- Applications: Food processing; Power production applications such as coal milling
- Operation: Fine milling (-100 mesh, +325 mesh products)
from KPM Analytics
The LabMill is a laboratory mill used to transform both hard and soft wheat into refined flour to examine its milling behaviour and the quality of the flour produced. [See More]
- Feed: Dry solids; Batch; Soft and hard wheat
- Scale: Lab
- Applications: Food processing
- Type: Roll Crusher
from EXAKT Technologies, Inc.
Ensures the finest results and ultimate particle size reduction in topical applications. Highlights. The EXAKT 50 ensures the finest results and ultimate particle size reduction in topical, oral and suppository applications among others. This is impressively underlined by the fact that the EXAKT 50... [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Scale: Lab; Production
- Applications: Other; Colors, Cosmetics, Electronics
- Type: Dispersion or colloid mill
from MB S.p.A.
BF 70.2. For small-medium crushing jobs, suitable for excavators weighing 15 tons or more. Excavator size: 15 tons or more. Weight: 5,000 lbs. Bucket capacity (cubic yards): 0.75. Mouth opening: 28" x 21.6". Output Range: 1" to 6". Dimensions: 82" L x 43" W x 49" H [See More]
- Feed: Dry solids; Continuous; Batch
- Scale: Production
- Applications: Construction materials such cement, asphalt, gravel, glass; Ore and mineral processing
- Type: Bucket Crusher
from Fritsch GmbH - Milling and Sizing
Suitable for comminution of extremely heterogeneous samples. Max. feed size: 120 x 85 mm. Areas of application. The Cutting Mill Combination can comminute samples of up to 2 litres in one step from 30 mm down to a final fineness of < 500 µm. A representative portion for analysis is... [See More]
- Feed: Dry solids; Batch
- Scale: Lab
- Applications: Chemicals; Food processing; Power production applications such as coal milling; Wood, pulp or paper products; Waste processing or recycling; Polymers
- Type: Shredder; Cutter or granulator
from NETZSCH Premier Technologies LLC
Grinding System Zeta ®. The Grinding System for Circulation and Multi-Pass Operation. Suitable for a wide variety of every viscosity and almost any product, with this technology you will achieve the highest product qualities and finenesses into the nanometer range using a wide variety of... [See More]
- Feed: Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Scale: Production
- Applications: Chemicals; Ceramics or abrasives; Ore and mineral processing; Paints, adhesives, pigment milling & dispersion; Other; Battery Materials, Nano Applications
- Type: Ball or media mill; Pin or universal mills
from Retsch, Inc.
The Vibratory Disc Mill RS 200 is suitable for the extremely quick, loss-free and reproducible grinding of medium-hard, hard, brittle and fibrous materials to analytical fineness. Grinding sets made from hardened hardened steel, tungsten carbide, agate, zirconium oxide and steel for grinding without... [See More]
- Feed: Dry solids; Batch; Medium-hard, hard, brittle, fibrous
- Scale: Lab
- Applications: Metal or smelting; Construction materials such cement, asphalt, gravel, glass; Power production applications such as coal milling; Ceramics or abrasives; Other; Soils, slag, plant materials
- Type: Disk attrition mill
from Custom Milling & Consulting, Inc.
A larger and more substantial machine than the EXAKT 50, the EXAKT 80 & 120 provide greater production capacity. The larger diameter rollers also provide more shear force during processing. And, since more force can generate more heat in the product, the EXAKT 80 & 120 are available with an... [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Scale: Lab; Production
- Applications: Other; Colors, Cosmetics, Electronics
- Type: Ball or media mill
from Bepex International LLC
RA and RP Series disintegrator machines are widely used for fine pulping of many food products. A versatile disintegrator machine capable of grinding, shredding, delumping, or pulping of wet and dry feeds. Several hammer styles and screen sizes offer multiple configurations tailored to specific... [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Batch
- Type: Hammermill
- Applications: Chemicals; Food processing; Foundry sand or shell recovery; Sanitary
- Operation: Fine milling (-100 mesh, +325 mesh products); Deagglomerating or delumping; Operation that mixes solids in a liquid
from Prater
Mega Mill Features: Minus forty mesh particle distribution. Dynamic rotor symmetry assures superior balance & uniform hammer wear. Single latch door for easy maintenance/cleaning with absolute clean-out front access. Zero tolerance hammer tip to screen clearance. O-ring door seals for dust-tight... [See More]
- Feed: Dry solids; Batch
- Type: Hammermill
- Applications: Chemicals; Food processing; Wood, pulp or paper products; Waste processing or recycling
- Operation: Fine milling (-100 mesh, +325 mesh products)
from EXAKT Technologies, Inc.
Our Easy Clean Plus Modular Mill offers greater control and makes clean-up easier than ever. Highlights. For producing truly elegant preparations of creams, ointments or gels there is no tool more effective or more complete than an ointment mill. And now the EXAKT 50 EC+ delivers more control in... [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Scale: Lab; Production
- Applications: Other; Colors, Cosmetics, Electronics
- Type: Dispersion or colloid mill
from MB S.p.A.
BF 90.3. The new version of the well-known BF90, MB's legendary model, was presented in 2009. Excavator type: 23 tons or more. Weight: 7,700 lbs. Bucket capacity (cubic yards): 1.05. Mouth opening: 35" x 21". Output Range: 1" to 6". Dimensions: 85" L x 54" W x 57" H [See More]
- Feed: Dry solids; Continuous; Batch
- Scale: Production
- Applications: Construction materials such cement, asphalt, gravel, glass; Ore and mineral processing
- Type: Bucket Crusher
from Fritsch GmbH - Milling and Sizing
For comminution of dry sample material with soft to medium-hard consistency, for fibrous materials or cellulosic materials as well as for sample preparation according to RoHS. Max. feed size: 70 x 70 mm. Areas of application. For the comminution of plastics, rubber, leather, fabric, fibres, wood,... [See More]
- Feed: Dry solids; Batch
- Scale: Lab
- Applications: Chemicals; Food processing; Power production applications such as coal milling; Wood, pulp or paper products; Waste processing or recycling; Polymers
- Type: Shredder; Cutter or granulator
from NETZSCH Premier Technologies LLC
Grinding System Discus. The NETZSCH Discus system is the quantum leap in disk grinding technology. The further optimized Discus disk agitator combined with the NETZSCH DCC ® separation system guarantees you extremely high throughput rates with significantly narrowed well time distributions and... [See More]
- Feed: Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Scale: Production
- Applications: Chemicals; Food processing; Ceramics or abrasives; Ore and mineral processing; Paints, adhesives, pigment milling & dispersion
- Type: Ball or media mill; Disk attrition mill
from Custom Milling & Consulting, Inc.
The new EXAKT E Series combines the flexible technologies of production mills with state-of-the-art control and programming. All in a compact size, ideal for lab or pilot plant. EXAKT introduces its latest development in laboratory dispersion equipment. A unique, feature-rich, electronically... [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Scale: Lab; Production
- Applications: Other; Colors, Cosmetics, Electronics
- Type: Ball or media mill
from Bepex International LLC
The REH disintegrator machine is a combination of Bepex ’s modified Extructor and horizontal RH Disintegrator. The workhorse of our Disintegrator Series, this mill is two steps in one: coarse grinding of large feeds followed by fine grinding into a uniform powder. The two machine sections... [See More]
- Feed: Dry solids; Continuous; Batch
- Type: Hammermill
- Applications: Chemicals; Food processing; Foundry sand or shell recovery; Sanitary
- Operation: Primary or secondary crushing boulders up to 100 inches to 1-2 inch mill feed; Coarse to medium milling accepts 1 to 5 inch feed and produces a +100 mesh product; Fine milling (-100 mesh, +325 mesh products); Deagglomerating or delumping
from EXAKT Technologies, Inc.
Designed for extraordinary precision and control of particle dispersion. Highlights. The EXAKT 80E combines the reliability of the EXAKT 80 with state-of-the-art control and programming. The EXAKT 80E was specifically designed for extraordinary precision and control of particle dispersion. A unique,... [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Scale: Lab; Production
- Applications: Other; Colors, Cosmetics, Electronics
- Type: Dispersion or colloid mill
from Fritsch GmbH - Milling and Sizing
For pre-crushing of dry, soft to medium-hard or fibrous materials and plastics. Max. feed size: 120 x 85 mm. Areas of application. For the preliminary comminution of plastics, rubber, films, leather, fabrics, fibres, wood, leaves, roots, animal fodder, grain, corn, peat, tobacco paper, cardboard,... [See More]
- Feed: Dry solids; Batch
- Scale: Lab
- Applications: Chemicals; Food processing; Power production applications such as coal milling; Wood, pulp or paper products; Waste processing or recycling; Polymers
- Type: Shredder; Cutter or granulator
from NETZSCH Premier Technologies LLC
NETZSCH Alpha ®. The next Generation of Agitator Bead Mills. General. Fresh creative standards were also set for the new Alpha ® from the very beginning and a new expression of form was used that distinctly communicates the innovative strength of NETZSCH in the design as well. In place of... [See More]
- Feed: Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Scale: Production
- Applications: Chemicals; Food processing; Ceramics or abrasives; Ore and mineral processing; Paints, adhesives, pigment milling & dispersion; Other; Battery Materials, Nano Applications
- Type: Ball or media mill; Disk attrition mill; Pin or universal mills
from Custom Milling & Consulting, Inc.
The "S" Series Three Roll Mills are feature rich and provide performance that meets or exceeds that of much larger production models. The unique tensioning system of the "S" Series minimizes the free play in the roller ball bearings insuring a more constant gap and ultimately a finer, more uniform... [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Scale: Lab; Production
- Applications: Other; Colors, Cosmetics, Electronics
- Type: Ball or media mill
from Bepex International LLC
The RH disintegrator machine circulates and disperses mixtures, eliminates lumps and creates a suspension or emulsion simultaneously. Designed for high-intensity mixing and grinding in homogenization applications. All stainless steel product-contact parts for sanitary processing. Tri-clover fittings... [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Type: Hammermill
- Applications: Food processing; Sanitary
- Operation: Deagglomerating or delumping
from EXAKT Technologies, Inc.
A more substantial machine with greater production capacity. Highlights. A larger and more substantial three-roll mill than the EXAKT 50 models is the EXAKT 80 with its greater production capacity. The larger diameter rollers, coupled with a more powerful two-speed motor, deliver the same high... [See More]
- Feed: Dry solids; Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Scale: Lab; Production
- Applications: Other; Colors, Cosmetics, Electronics
- Type: Dispersion or colloid mill
from Fritsch GmbH - Milling and Sizing
For comminution of dry, soft to medium-hard, sample materials as well as fibrous materials and plastics as well as for sample preparation according to RoHS. Max. feed size: 70 x 80 mm. Areas of application. For the comminution of plastics, rubber, films, leather, fabrics, fibres, wood, leaves,... [See More]
- Feed: Dry solids; Batch
- Scale: Lab
- Applications: Chemicals; Food processing; Power production applications such as coal milling; Wood, pulp or paper products; Waste processing or recycling; Polymers
- Type: Shredder; Cutter or granulator
from NETZSCH Premier Technologies LLC
Nano mill Zeta ® RS. Innovation in Wet Grinding Technology. General. The nano mill Zeta ® RS is the next development of the worldwide known circulation mill system Zeta ® type LMZ. Its field of application starts where the other agitator bead mill system Zeta ® ends. The highly... [See More]
- Feed: Solids-liquids - pastes, slurries or moist solids; Batch
- Scale: Production
- Applications: Ceramics or abrasives; Paints, adhesives, pigment milling & dispersion; Other; Battery Materials, Nano Applications
- Type: Ball or media mill; Pin or universal mills
from Bepex International LLC
The RI Disintegrator Machine is perfect for in-line installation and continuous or batch operation. Compact design requires minimum space for in-line installations. Standard design for pressure rating to 150 psig and vacuum supports a range of applications. Tramp metal discharge for removal of... [See More]
- Feed: Solids-liquids - pastes, slurries or moist solids; Continuous; Batch
- Type: Hammermill
- Applications: Other; Mixing, Delumping,and Dissolving of Fluids, Slurries and Pastes
- Operation: Deagglomerating or delumping
from Fritsch GmbH - Milling and Sizing
The FRITSCH Variable Speed Rotor Mill PULVERISETTE 14 premium line offers impact, shearing and cutting comminution in one instrument – with a higher performance, better cooling and significantly quieter than comparable instruments. Its powerful motor is ideal for the particularly fast... [See More]
- Feed: Dry solids; Batch
- Scale: Lab
- Applications: Chemicals; Food processing; Construction materials such cement, asphalt, gravel, glass; Power production applications such as coal milling; Foundry sand or shell recovery; Wood, pulp or paper products; Waste processing or recycling; Polymers
- Type: Shredder; Cutter or granulator; Pin or universal mills; Impact mills, crushers or breakers
from NETZSCH Premier Technologies LLC
System Rumba ®. Highly Efficient Chocolate Production. General. Compared to other systems for the production of chocolate- and confectionery masses, the system Rumba ® is characterized by reduced requirements for energy, cooling water and space as well as considerably shortened processing... [See More]
- Feed: Solids-liquids - pastes, slurries or moist solids; Batch
- Scale: Production
- Applications: Food processing
- Type: Ball or media mill
from Bepex International LLC
The Bepex Rubber Chopper is typically used in the tire, plastics and adhesives industries. Its heavy-duty design can shred blocks of rubber and plastic in seconds at extremely high torque. Customization is facilitated by various orifice plate sizes, cutoff knife speeds, main shaft speeds, and hammer... [See More]
- Feed: Dry solids; Batch
- Type: Shredder
- Applications: Other; Tires, Plastics and Adhesives
- Operation: Primary or secondary crushing boulders up to 100 inches to 1-2 inch mill feed; Coarse to medium milling accepts 1 to 5 inch feed and produces a +100 mesh product