Pulverizers

By Gina Tverdak, Associate Editor

Allied-Gator
The MT Series Multi-Tool with the cracker/crusher jaw set is optimal for demolition and effortlessly processes concrete and cast materials. The 90° jaw opening accommodates more material and enables the tool to demolish objects that are much larger than the actual jaw opening of the tool, such as concrete piers, foundations, and the corners of buildings.
The cracker/crusher jaw set also features disposable wear components. Interchangeable bolt-on tooth segments can be changed in less than five minutes and allow the operator to control and regulate material size with several tooth configurations. The cracker teeth penetrate heavily reinforced concrete and dense rock, and safely process cast materials, while the crusher teeth de-rod and pulverize concrete in one bite, allowing contractors to demolish and process materials simultaneously. The finish teeth send a clean, flat and controlled crack through curbs and walls, reducing costly and time-consuming precision work like facing and edging, and the rail breaker teeth easily handle, position, and process heavy rail and, as an added benefit, cleanly remove any concrete or asphalt that may be bonded to the rail.
www.alliedgator.com

Atlas Copco
The DP and BP series of Atlas Copco pulverizers have been designed for long-term heavy-duty use, particularly with high throughput rates and stresses. These pulverizers can handle extreme forces and continuous operation. Both of the pulverizer variants, the DP (Demolition Pulverizer) and BP (Bulk Pulverizer) offer an optimal structural shape for their respective applications: the straight inlet on the DP series is suited for primary demolition work on horizontal or vertical concrete structures, while the BP’s angled inlet is suited for material handling during secondary reduction and separation work.
Both series come standard with a hydraulic continuous rotation drive with overload protection. The devices in the BP series can also be purchased without the slewing assembly.
The robust design of the movable arms and of the base casing, whether with straight or angled inlet, ensures maximum stability and durability, even under extreme stress. A moveable arm in conjunction with a power hydraulic cylinder outfitted with a fast traverse valve provides more breaking power at low cycle rates, which in turn keeps the work progressing very quickly.
For both pulverizer variants, the fixed and the movable pulverizer jaw are each equipped with replaceable wearing elements that can be replaced onsite using the onboard tool kit.
The technical concept behind the DP demolition pulverizer combines the characteristics on a demolition attachment with an excavated material pulverizer. The DP demolition pulverizer is for primary demolition. Its hydraulic slewing gear, straight jaw shape and cutting blade on the demolition attachment—not to mention the wide jaw of a pulverizer—make the DP demolition pulverizer suited for various demolition tasks. Universal use of the DP demolition pulverizer for concrete pulverization work in both primary and secondary demolition reduces investment, operating and personnel costs, since only one single attachment, carrier, and operator are required for both demolition tasks.
BP pulverizers are ideal for secondary demolition and additional reduction of reinforced concrete elements: the broad, swan-necked pulverizer jaw makes it easy to feed in demolition material on the ground. That in turn allows the work to progress more quickly, all with clean separation of rebar and concrete as well as subsequent reduction of the concrete elements into grain sizes suitable for crushing or to serve as backfill. With the aid of the hydraulic slewing gear, it's also possible to reposition the pulverizer at any time during primary demolition of ceilings and walls to achieve better effectiveness. The pulverizers of the BP series can be ordered without the slewing gear for work on excavated materials.
www.atlascopco.us

A-Ward Attachments
According to A-Ward, its line of pulverizers can downsize large areas of concrete and separate difficult rebar quickly, quietly, and efficiently. The mechanical pulverizer jaw makes fast work of concrete debris, operating at 10 to 12 working cycles per minute. The company offers a simple, heavy duty design. The Power-Positive attachment coupling system, creating 25% more power and fast changeovers to OEM buckets and other A-Ward attachments, amplifies bucket ram force and raised center tooth design focuses crushing power at the point of engagement, while a fast jaw speed and greater crushing power produces clean separated reinforcing steel (re-bar) and clean crushed concrete in pieces of 6- to 8-inches and smaller.
The units are fitted with oversize fiber semi-self lubricating bushes for rigidity and less maintenance. The thicker manufactured-material sections together with the use of heavy wall tubing across the jaws gives the pulverizer jaw greater durability and rigidity. The pulverizer jaw’s replaceable, abrasion-resistant teeth are welded in to create a solid work platform. New teeth will work harden while pulverizing steel re-enforced concrete and are long-lasting, only requiring replacement approximately every two years depending on usage. No hard facing is required.
Applications for A-Ward’s pulverizer jaw includes: demolition—excels in the secondary processing of concrete debris for fill and crusher feedstock. Also used in primary demolition of bridge decking, parking structures, floor slab, beams and footings; concrete recycling—use in place of hydraulic breaker for faster and quieter preparation of concrete for crusher feedstock. Separates concrete from rebar cleanly for maximum resource recovery; and cast iron recycling—excels at safely breaking cast iron material such as machinery stands and engine blocks. www.a-ward.co.nz

Breaker Technology
Breaker Technology’s (BTI) MCP Series of hydraulic pulverizers work well in secondary demolition and the recycling of concrete. The MCP Series of hydraulic pulverizers can be used to demolish concrete floors or low walls. They provide low noise and vibration, good fragmentation and good separation of steel wire from concrete material.
A unique speed valve provides a faster cycle time and replaceable cutting blades cut reinforcing steel and cable. Blades can be rotated and the replaceable, heavy duty teeth eliminate the need to build-up and hardface and are fast and easy to change in the field, resulting in 10%-15% more production time. The rate of wear on each tooth is different depending on its location within the jaw. By rotating the teeth, tooth wear is even, providing maximum service life.
The entire structure, excluding the top mounting bracket, is fabricated from steel to provide maximum strength and abrasion resistance. The ripper shape design allows the operator to easily grab material on the ground or in the pile, while the fixed jaw is open to allow material to pass through and increase production. Fixed mounting versus rotational allows for handling of loads that are not centered.
BTI also offers the CCP Series of mechanical pulverizers that have been designed for both primary and secondary demolition work, allowing the contractor to demolish, process and sort material, all with the one attachment. This unit works off the excavator’s tilt cylinder, eliminating the expense of plumbing the machine.
Just as with the hydraulic pulvierziers, the CCP Series offers replaceable cutting blades with replaceable, heavy duty teeth.  The separate pivot pin connection protects the excavator’s stick from possible damage and the wear resistant steel has been constructed from high quality steel providing long life and durability.
www.rockbreaker.com

Caterpillar
According to Caterpillar, its mechanical pulverizers replace the normal excavator bucket, and are a highly cost-effective tool for single-step recycling and processing demolished concrete debris. The mechanical pulverizer is powered by the excavator bucket cylinder, eliminating the need for costly additional cylinders or hydraulics. The integral stick-relief features reduce the possibility of damage to the excavator stick when high reactive forces occur. As the jaws close, initially only a few of the 14 pointed teeth impact the concrete. Combined with the features of the force-enhancing extended linkage, the mechanical crusher develops maximum crushing force over the entire pulverizing stroke. Replaceable abrasion-resistant crusher teeth and wear-resistant steel in the jaws reduce maintenance cost and downtime. The Cat mechanical shears and mechanical pulverizers use the same welded mounting plate on the stick within the same weight class of machines.

Cat also offers a multi-processor with primary and secondary pulverizer jaws. The primary pulverizer jaws demolish and reduce concrete in a single step, separating rebar from concrete and eliminating the need for secondary processing before recycling. The secondary pulverizer recycles demolished concrete by pulverizing concrete, separating concrete and rebar, and cutting rebar as needed. The Multi-Processor features a large-diameter, cross-mounted cylinder providing exceptional cutting and crushing force and an excellent power-to-weight ratio. Any MP unit can accept multiple jaw sets for maximum on-the-job flexibility. The Multi-Processor features hydraulic 360° rotation; the unit can attack material to be demolished from virtually any angle, minimizing the need to move the base carrier.
www.cat.com

Geith Precision
Geith Precision rotating pulverizers for 12 to 50 metric ton excavators are ideal for tough demolition jobs. The rotating pulverizers feature 360° hydraulic rotation that allows for pulverizing hard to reach materials accurately and efficiently. Exchangeable teeth and well protected hydraulic components increase productivity and minimize downtime, and serrated blades hold rebar in place for precise cutting. The hydraulic speed valve generates a shorter work cycle. High clamping force works to crush tough materials, while a wide jaw opening helps process thick concrete. The Hardox steel structure provides durability and strength.
The Geith Precision fixed pulverizers for 18 to 35 metric ton excavators are hydraulic crushing attachments designed to maximize productivity, and efficiently process and sort materials onsite while reducing transportation and storage costs. The fixed pulverizers feature the same benefits as the rotating pulverizers such as exchangeable teeth and well protected hydraulic components, serrated blades, a hydraulic speed valve, high clamping force, wide jaw opening, an a Hardox steel structure.
www.geithprecision.com

Genesis Attachments
The Genesis Mechanical Pulverizer makes easy work of concrete removal and processing. Manufactured out of strong, abrasion-resistant, custom-alloy steel, with tough proprietary bolt on teeth that are quickly replaced and fully protect the parent material from wear. The Genesis mechanical processor quickly processes concrete walls, floors, decks, foundations, pre-cast structures, and effectively separate concrete from steel reinforcing bar to produce two recyclable materials—minimizing disposal costs and maximizing salvage value. Designed to work in place of the excavator bucket, the mechanical pulverizer requires no excavator modifications and can be used with or without a coupler.
Genesis’ LXP Pulverizer jaw setup will tackle concrete pulverizing jobs. These jaws were designed for concrete processing, bridge demolition, rebar removal, and secondary demolition projects. The patented pivot geometry creates peak power when the jaw is fully open where it’s most needed in order to pulverize large concrete into smaller more manageable aggregate. When an operator is done, he has the option to use the tool for cutting steel or cracking concrete on the next jobsite by switching over to the quick-change shear or concrete cracker jaw set. It only takes 15 minutes. The LXP is a 3-in-1 hydraulic processor that resets the bar for power and productivity.
In response to customers who wanted the versatility of the company’s Versi Pro on a slightly larger machine, Genesis Attachments recently introduced its Versi Pro 15.  Designed for excavators in the 28,000 lb range (third-member mount), the Versi Pro 15 allows contractors to ramp up the versatility of their mid-sized machines. Like its predecessor, the Versi Pro 7 which met the needs of skid steer and mini-excavator operators, the Versi Pro 15 offers modular-design jaw sets to maximize machine use and efficiency. Jaws are available in two configurations: shear and concrete cracking, and each can be switched out in as little as 10 minutes using standard tools. Both jaw sets benefit from the unit’s standard 360° rotation, making material access and placement fast, easy and accurate. The concrete cracker jaw offer Genesis’ patented pivot geometry design.
Genesis Attachments also expanded its Genesis Demolition Recycler (GDR) line to include the GDR 150 and GDR 300. The new models join the already-successful GDR 200 for processing concrete in both demolition and recycling applications. Designed for third-member use on 15- and 30-metric ton machines, the new model GDRs deliver an impressive amount of crushing force at the tip: 85 tons for the GDR 150 and 148 tons for the GDR 300. Both models bring a real appetite for production: the GDR 150 offers a jaw opening of 26 in. and jaw depth of 25 in., while its larger counterpart, the GDR 300, has a jaw opening of 42 in. and a jaw depth of 28 in. Quick cycle times and tremendous crushing forces are made possible through use of a regeneration valve and a large-bore cylinder, respectively.  
www.genesisattachments.com

Sandvik Mining & Construction
Sandvik hydraulic pulverizers are designed to crush and separate reinforced concrete and other materials continuously, breaking them down into fragments suitable for recycling and/or removal from site. Normally mounted on excavators, they are used for tough secondary demolition, in which their very high crushing forces can be exploited maximally. According to the company, Sandvik’s pulverizers are reliable, high-performance, low-maintenance demolition tools that give a low cost per ton of material processed.
The BP Pulverizer Range is used at ground level to reduce the size of concrete blocks, remove asphalt, separate reinforcement bars after demolition, sort, and load material. These pulverizers feature a solid fixed jaw design as well as a broad jaw design with wide opening; long indexable and replaceable cutting blades; secure cutting design; a well-protected hydraulic cylinder; and effective and productive cracking teeth. www.miningandconstruction.sandvik.com

Stanley/LaBounty
LaBounty concrete pulverizers are designed for the quiet and controlled demolition and recycling of concrete bridge decks, walls, floor slabs, foundations, silos, culverts, encased beams, pre-cast materials, railings, and more. They also separate concrete from rebar, producing two recyclable products.
LaBounty’s concrete pulverizers feature custom lever arms to provide maximum crushing power, pin-on replaceable Swift Lock Teeth, heavy duty torque tubes which provide increased strength, main pivot consisting of spools, bearings and pins which when disassembled from the excavator remains together and can be built to work with the LaBounty Rapid Tach II coupling system.
The CP uses existing excavator hydraulics—no additional circuits are required. A moveable front jaw, actuated by the excavator’s bucket cylinder, closes into the stationary back jaw. The back jaw is pinned in place with a position arm which is pinned to a mounting pad welded on the lower surface of the excavator’s stick. The Swift Lock Pin-On Replaceable Tooth System allows quick and easy change-out of teeth, reducing down time and cost.
When an order is placed for a LaBounty concrete pulverizer, the unit will be manufactured specifically to pin on the excavator for which it was ordered. However, concrete pulverizers may be easily retrofitted to a variety of excavators within each weight class using Stanley LaBounty Installation Kits consisting of special bushings, spacers and pins.
Stanley LaBounty also offers its CPs to work with the Rapid Tach-II, pin capturing, manual, quick coupling system. In order to retain adequate performance (crushing force), the pin centers for the excavator/coupler mount have been spread. A subsequent loss of approximately 25% in the jaw opening of the CP can be expected. For buckets, a loss of up to 25° in bucket curl can be expected as well.
www.stanleyhydraulic.com

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