August 1, 2010
Deep Impact Crushers
Here’s a selection of impact crushers on the market today that can help operations improve gradation and production.
By Kerry Clines, Senior Editor
Vertical shaft impact (VSI) crushers offer reduced operating costs and increased production of saleable material.
Sandvik says its VSI crushers use the rock-on-rock crushing technique, which results in consistent product gradation and low contamination rates. Other features include reduced operational cost per ton, quick and easy replacement of wear parts, reduced out-of-balance forces, and excellent product shape.
Trio’s TV range of VSIs are configured to suit specific production requirements, enabling a combination of assemblies to be custom assembled for each application using interchangeable crushing chambers, rotor diameter, rotor type, and drive configuration. Each assembly is fully interchangeable.
Cemco says its Turbo 80 mid-size VSI crusher can be equipped to operate from 100 to 275 tons per hour with a maximum feed size of 2.5-inch material. Components that require routine maintenance are easily accessible; major servicing can be done in less than an hour. The drive system’s filtered oil lubrication system increases crusher life.
The Barmac VSI from Metso uses rock-on-rock crushing action to transform low-grade material into premium aggregate products. The company says the high-velocity impact crushing improves the soundness and shape of the stone, reduces product moisture, and eases the screening operation.
Stedman says its V-Slam Model VS-88 VSI features innovative housing and rotor designs; an easy-access, low-profile split swing lid; higher operating speed for finer grinding; and a 500 ton-per-hour capacity. A hydraulic drive offers variable mill speeds.
Used in stationary and portable plants, horizontal shaft impact (HSI) crushers provide high-volume production and minimal wear.
Gator Machinery’s 1013N HSI features a newly designed wedge-type rotor for safer blow bar removal; a special impeller bar design for extended life; a rotor locking system for safer rotor maintenance; large, self-aligning spherical roller bearings; hydraulically opening rear section; inspection doors in key areas; and a large, clear discharge opening.
Eagle Crusher says its UltraMax line of HSIs are engineered for maximum performance, profitability, and easy maintenance. Its powerful three-stage primary/secondary crushing action is said to outperform other HSI impactors with reduction rates in excess of 24:1. The crushers produce quality product at a low cost per ton.
American Pulverizer says its HSIs come in a variety of diameters and widths for primary and secondary impact crushing. The machines feature hydraulically adjustable impact aprons and drop-in reversible blow bars. The disc rotors can be used with open or closed configurations.
Primary impact crushers deliver high-production, as well as longevity and low operating costs.
Hazemag offers impact crushers that are specifically designed and matched to production requirements for primary, as well as secondary processing. The crushers feature HAZtronic automated control technology (computer-controlled, fully automated hydraulic apron positioning system) and a field-proven rotor design for trouble-free operation.
The VersaCap primary impact crusher from Universal Crusher is designed to provide a level of versatility. The Shot-Rock primary is available in three sizes and designed to reduce quarry shot limestone. Reversible hammers feature a protruding leading edge that provides longer wear life at higher reduction ratios.
Telsmith says its heavy-duty Primary Andreas (PA) impact crushers are built around a heavy, high-inertia, solid-type sculpted rotor with larger-than-industry-standard shaft and bearings. The units process up to 40-inch input feed and are available in two models — the 500-horsepower PA6060 and the 700-horsepower PA6478 — capable of throughput capacities up to 800 tons per hour.
Portable impact crushers can move with the deposit to save valuable transport time and money.
The CEC Generation II tracked impact crusher boasts a high-capacity, 52-inch by 16-foot feeder with second deck for controlled reject, enhancing production and gradation. The closed-circuit 5-foot by 12-foot, two-deck screen system hydraulically lowers for screen cloth change. The machine’s long tracks have wide track pads for stability.
Western Retek’s P313i track-mounted impactor has production capabilities up to 350 tons per hour. Features include a 4-foot by 4-foot punch plate section in the feeder combined with a two-step, two-deck independent grizzly; a 35-inch by 50-inch inlet opening; hydraulic gate adjustment; and an easy-access engine compartment.
Kleemann says its new EVO Series of track-mounted impact crushers — MR 110 R EVO, MR 110 Z EVO, MR 130 R EVO, and MR 130 Z EVO — offer a new, highly efficient material flow concept that eliminates all restrictions to the flow of material throughout the entire plant. The direct drive adjusts rotor speed to suit the application.
The Terex Canica TXC2050D diesel-powered VSI plant produces up to 400 tons per hour of throughput and accepts up to 4-inch feed size. The convertible crushing chamber can be configured to provide crushing solutions for all levels of material abrasiveness.
Astec’s ProSizer 2612V incorporates a HSI to separate fractionated recycled asphalt pavement (FRAP) into multiple sizes. Unlike compression crushers, the impact crusher minimizes material buildup. According to the company, the impact crusher, configured with a high-frequency screening plant, creates the ultimate in FRAP processing.
Options for meeting individual plant needs.
Aggregate Manufacturing International custom-designs and builds impactor crushing plants to meet the specific needs of each individual producer.
Amcast says its blow bars for HSI crushers are manufactured with high-quality materials and are available with wear resistant inserts to extend wear life. The company’s newest blow bars are made of F60, FX15 medium chrome, and FX25 high chrome alloy.