Aggregates Manager Digital Magazine
Issue link: http://read.dmtmag.com/i/403276
Streamlined secondary and tertiary crushing McLanahan Corp. expanded its product line to include cone crushers. Capable of secondary, tertiary, and quater- nary crushing, the units feature top-down maintenance. Safe unblocking is also engineered into the cone, with no need to dig it out when stalled. Simply press a button to open and restart when fully opened. Streamlined design features include an all-roller bearing design, simple hydraulic controls, and easy manganese changes. McLanahan Corp. | www.mclanahan.com Dual crushing options Sandvik Construction continued to expand its Prisec line with the introduction of the CI531 primary and CI532 secondary Prisec 3 horizontal shaft impact crushers. As with the rest of the product line, the HSI crushers can be configured into either a primary or secondary crushing mode. In addition, single-stage crushing is also an option with the ability to recirculate material to the primary versions of the crushers. A new crushing chamber design is said to allow for impressive reduction ratios through the use of two uniquely designed curtains, which have traditionally required a three-curtain configuration crusher. The maximum feed size is 39 inches in the primary configuration and just under 14 inches in secondary operation. Throughput ranges from 441 to 772 tons per hour as a primary and 276 to 441 tons per hour as a secondary. Sandvik Construction | www.construction.sandvik.com Highest-in-class crushing force With 402-horsepower performance and a crushing capacity output range of 150 to 600 tons per hour, Telsmith says its T400 Cone Crusher boasts the largest-in-class clearing stroke and highest-in-class crushing force. The cone features a large clearing circuit, which is engineered to safely and quickly allow any uncrushable material to pass. With a maximum feed opening of 12 inches, it has a 52-inch diameter head and a 55-inch receiving hopper. The crusher uses a single bowl for all liners over its range of operation. It also features a new and improved patent-pending anti-spin feature that prevents head spin to extend manganese life. A patent-pending concave (bowl liner) retention system achieves retention without the use of hammers or hand tools. The unit also features the largest-in-class, patent-pending hybrid bearings. The bearings feature a washer and ramp design that replaces the conventional use of a socket, socket liner, and head ball. They not only streamline service, but also offer both static and dynamic lift to efficiently carry the crushing forces. Telsmith | www.telsmith.com Steep feed angle, fewer parts Metso introduces the Nordberg NP15 impact crusher, designed for secondary and tertiary crushing applications. It features a steeper feed angle to improve crushing efficiency and produce more end product with less recirculation load. It accepts feed material up to 15 3/4 inches and can be equipped with a 476-horsepower motor on a single drive. Its maximum throughput capacity is up to 12 percent bigger than the existing NP1315 impact crusher. The number of different side-liners has been cut nearly in half, compared to its predecessor, with only seven different liners. The IC2000 NP Automation system gives accurate control of the crusher parameters for a high-quality product and improved plant profitability. A wide range of blow-bar options is available to ensure the tool matches the abrasiveness of the material. A new two-part rear frame offers easy and safe access for main- tenance. A removable breaker plate cassette ensures safe changes of breaker plate liners, while a maintenance bridge offers safe and easy access to both the highest side-liners and the rotor. A patented Self Rotation Rotor is the centralized point for adjusting the settings and changing the blow bars. Metso | www.metso.com