Roll Crusher

Swing Hammer Mill

Cross Beater Mill

Micro Hammer Cutter Mill

Jaw Crusher

Gyro Mill

Ball Mill

Micronising Mill

Roll Crusher

The Roll Crusher is a rugged slow-running machine used for pre-crushing lumpy material prior to further immediate processing or finer grinding. End particle sizes range from “walnut” to “hazelnut” dimensions, although output and the degree of fineness depends on the material being crushed. Friable materials, for example, are reduced to a much smaller size. The de-lumping feature greatly enhances flow of materials between processes. The Roll Crusher is designed to produce little or no dust and has an anti-blockage feature, i.e. the rotating shaft automatically reverses its direction, temporarily, to free blocked material.

The Single Roll Crusher can process up to 10 tonne per hour. A Double or Multiple Roll Crusher is required where larger material lumps are to be reduced. This option has a greater “live-bed” crushing area. The Double or Multiple Roll Crusher is fitted with two or more roller shafts running at differential speeds. The shafts can be specified to run either inwardly or outwardly. 

• Single, double and multi-shaft versions.
• Models are available in normal carbon, acid resistant stainless steel, hastelloy and wear resistant steel.
• Different-shaped crushing elements are available, depending on whether the material is hard, brittle, viscous or moist.
• Screens can be fitted for special applications.
• Compact design allows retro-fitting into existing process lines.
• Maybe mounted in support frame or fitted directly to process line.
• Minimal maintenance requirements. The crushing cams, crushing combs and stripper combs are easily removable for cleaning. 

Applications abound in the chemical, food, pigments, pharmaceutical, coal and agrochemical industries. The Roll Crusher is ideal for the de-agglomeration of material from sacks or silos and for granulating coarse, lumpy, caked or compacted material.

Swing Hammer Mill

The Swing Hammer Mill is possibly the most economical mill available for the return in output. Glen Creston offers two versions of the mill – Blower Discharge and Bottom Discharge – each available in three sizes and with 2 mounting options: 

Bottom Discharge:

• For discharge of material by gravity.

Blower Discharge:

• A powerful fan pulls the material into the grinding chamber and through the screen.
• For lighter weight particles, such as paper, plastic foam or feathers
• For applications where the processed material is distributed to another processing area or level.

Mounting option 1 - mounted on a steel baseplate:

• For customer installation and wiring.
• For positioning over a collecting vessel, pit, conveyor or hopper.
• Bottom of the mill is open for rapid discharge. 

Mounting option 2 – mounted on a frame:

• Ready-wired with an integral starter.
• Outlet has a grid to prevent hand access.

Features:

• Low cost.
• High throughputs.
• Low power consumption.
• Compact size.
• Simple, robust design; durable mill body constructed from cast steel.
• Hammers have 4 grinding edges, each of which can be used in rotation, for maximum service life.
• Serrated liner in top section of mill for increased milling efficiency.
• Large inlet hopper – ideal for bulky material.
• 180° full-width screen area.
• Easily interchangeable screens, available in mesh sizes 0.5mm to 30mm. (One standard screen of customer’s choice is supplied with each mill.) 

Optional accessories:

• Magnet, which attaches to inlet chute to attract tramp ferrous metal.
• Special Electrics to customers’ individual specifications.
• Special frames and chutes to customers’ individual specifications.
• For Blower Discharge version only: Product/air separator, comprising duct, cyclone, sack filling neck with clamps and support. 

The chart lists the approximate throughput per hour from the Hammer Mill 10. The results will depend on screen size, material, moisture content, feeding method and motor power. Results may be approximately doubled for Model 20 and tripled for Model 30.

* > 5000 in Model 30

Cross Beater Mill

The popular Cross Beater Mill is used for crushing and grinding a wide assortment of materials up to the medium-hard range such as soil, bricks, concrete, rock, cement clinker, coal, glass, ores, minerals, rare earth products, chemicals, spices and grain. Applications abound within a variety of industries, including construction, environmental, mineral, chemical, agricultural and ceramic. 

The mill is remarkable for combining small size with strength and power for heavy duty application and continuous operation. It processes samples from 200 g/hr up to a maximum of about 50 kg/hr, with an initial lump size of up to 30 mm down to a finest end particle size of approximately 50 microns. Coarse, medium or fine grinding can be selected. Interchangeable screens, with different hole diameters determine the fine particle size. Screens are changed quickly and simply by sliding them in and out of the recess provided. The beater tips are re-adjustable to maintain performance. The mill can be stand-mounted or bolted to a bench. The Cross Beater Mill is designed to produce little or no dust and for easy cleaning.

•  Heavy duty cast iron housing.
• 1.1kW 3000 rpm motor, supplied for use on single-phase or three-phase power supplies.
•  5-litre receptacle with filter tube and clamps included.
• Dimensions: 113 x 56 x 70 cm (H x W x D); weight: 52 kg nett, 62 kg gross. 

Options:

• Grinding chamber lining and door lining available in cast iron, chrome steel and stainless steel.
• Beater arms available in cast iron and stainless steel.
• Beater tips available in chrome, steel, stainless steel and chrome free.
• Smooth liners for soil grinding for fast cleaning and minimized cross contamination.
• All-stainless steel contact parts.
• Flameproof electrics.
• Special hoppers and stands.
• 30-litre receptacle.
• Stainless steel screens available:
• Stainless steel Conidur & Trapezoidal:
• 12 mm / 0.20 mm / 0.25 mm / 0.50 mm / 0.75 mm / 1.0 mm /1.50 mm
• Heavy duty stainless steel round hole:
• 2.00 mm / 3.0 mm / 4.00 mm / 5.00 mm / 6.00 mm / 8.00 mm / 10.00 mm
• Stainless steel round hole:
• 3.00 mm / 4.00 mm / 5.00 mm / 6.00 mm / 8.00 mm / 10.00 mm 

Note: The bulk of the ground product is reduced to a size much finer than the screen hole.

Micro Hammer Cutter Mill

The Micro Hammer Cutter Mill is the ideal machine for all dry milling applications. It provides the power of a Hammer Mill and the cutting action of a Knife Mill and has the ability to pulverize samples of almost anything in seconds, including wool, cotton & rock. With its compact design the Micro Hammer Cutter Mill will fit any lab countertop and under hoods.

• Variable 600-6000 rpm motor.
• 0.2 up to 6.0 mm sieves.
• Hardened 400 series stainless steel construction.
• Special versions for wheat and corn hardness tests.

Jaw Crusher

Samples arriving in the laboratory often require pre breaking before they can be processed in secondary fine grinding mills; the Laboratory Jaw Crusher is ideally suited for this operation. This rugged unit is capable of crushing the most tenacious of materials such as concrete, glass, granite, limestone, ores, quartz, slag and stones. 

Normally floor standing units, the Jaw Crushers come as standard with a sample collection tray, they can also be mounted on a frame to accommodate larger containers or fitted into a small pilot plant scheme. The standard units are supplied with cast manganese steel jaws and stainless steel lateral wear plates. 

Options:

• Tungsten carbide or stainless steel jaws, Zirconia jaws can be fitted to the smallest bench top version for non metallic contamination.
• Corrosion resistant linings.
• All stainless steel version.

Gyro Mill

The Gyro Mill is the perfect choice for rapid, homogeneous and reproducible grinding of samples to analytical fineness, both wet and dry. The equipment is widely used for precision sample preparation for wet chemistry and instrumental analysis, such as XRF and AA analysis as well as for geological / mineral assay work. Materials routinely ground by this method include brick, castings, cement, ceramics, chemicals, clinker, coal, coke, concrete, ferro-alloys, fertilisers, fluxes, glass, iron, limestone, minerals, paint, pesticides, pharmaceuticals, dried plant material, ore, precious stones, rocks, metals, sand, slags, silicates, soil, steel, wood... 

The Gyro Mill is particularly recommended for grinding smaller samples from 1 cc to 250 cc. Typically, the maximum initial particle size is approximately 12 mm, depending on the hardness of the material. 

Advantages:

• Negligible sample contamination.
• Large puck and rings result in high intensity grinding with high percentage of fines.
• Accommodates the whole range of grinding dishes, of whatever manufacture, from the most fragile to the hardest.
• Easily adjustable grinding intensity control with three settings.
• Variable, built-in process timer.
• Cam clamping device allows rapid, simple loading and unloading of dishes.
• Timer switch, stop/start switch, overload relay and cover safety switches.
• Sound-proof cabinet.
• Maintenance-free.
• Exceptionally fast grinding: Most samples ground to analytical fineness in 1 to 3 minutes. 

Technical Data:

• Motor : 0.4 kW, 230 V single-phase 50 Hz or 400 V three-phase 50 Hz.
• (Other voltages or frequencies can be supplied on request.)
• Dimensions: 64 x 64 x 107 cm (W x D x H); weight: 275 kg net. 

The chart lists the grinding performance for the Gyro Mill using a 100 cc tungsten carbide grinding dish, with grinding intensity set at “high”.

Ball Mill

A comprehensive range of ball mills for laboratory and pilot plant offers the operator a flexible approach with a wide choice of pot sizes and materials. From a single pot to multi-tiered units capable of accommodating 35 litre containers you can be sure to find a mill to suit your requirements. 

• Many models available with variable speed.
• Flameproof units for hazardous areas.
• Wide choice of accessories include screens, pourers and tipping stands for straining the contents of the mill pot.
• Pots available in carbon steel, stainless steel and porcelain. 

Various different types of grinding media can be used to obtain maximum grinding efficiency. For the ceramic pots steatite or high density alumina balls are generally used whilst for the steel pots either carbon or stainless steel balls are the normal choice. Other media such as zirconia cylinders or glass balls can be supplied to order.

Micronising  Mill

The Micronising Mill is the perfect choice for precision sample preparation for XRD. It rapidly reduces samples to sub-micron sizes by a unique vibratory grinding action. Each element within the grinding vessel moves with respect to its neighbour so as to produce linear contact blows and planar shearing.  Materials routinely ground by this method include Carbides, Nitrides, Borides, Cement, Clays, Shale, Mica and many others. 

Features:

• Minimised sample damage & contamination.
• Virtually no sample loss.
• Virtually no chemical degradation.
• Narrow product particle size distribution.
• Reproducible results.
• Wet and dry grinding.
• Choice of grinding elements.
• Rapid results (3 - 30 minutes).
• Timer up to 30 minutes.
• Minimal maintenance.
• Bench mounted.