biomass or hog fuel. All information has been provided by the equipment suppliers. Back to the Grind T his grinder update provides an overview of some of the large-scale stationary grinders that are available for processing mill residue, construction debris, and other sources of waste wood into useable cbi’s grizzly a rugged beast The CBI Grizzly Mill Hog is designed extremely rugged and will handle almost any material. Cedar bark, green spruce bark, all kinds of mill wood waste, demolition debris, butt ends, railroad ties, and stringy bark are all easily processed, and the resulting product is of high quality and suitable for hog fuel or mulch. The ergonomic design makes the Grizzly Mill extremely safe, easy, and inexpensive to maintain. Typical maintenance costs for the Grizzly Mill are much lower than for conventional wood waste grinders. The rugged heart of the Grizzly Mill Hog is an extremely heavy duty, solid-steel, offset helix rotor that shears material from two directions against an anvil and grate. The rotor turns at half the speed of a conventional ham- mermill rotor, resulting in substantial savings in maintenance costs. The Grizzly Mill is also very tolerant of rock and metal. The Grizzly Mill is used worldwide in these industries: sawmills, pulp and paper mills, oriented strandboard plants, construction and demolition recycling facilities, log merchan- dising systems, land clearing operations, compost facilities, and co-generation plants. www. cbi-inc.com The Grizzly Mill boasts metal and rock tolerance and low maintenance costs. regular maiNteNaNce is the best troubleshootiNg For wood hogs R egular inspection and replacement of worn parts can virtually elimi- nate the need for troubleshooting. Wood hog maintenance can be bro- ken down into critical and noncritical items. Critical items such as rotating assemblies can have an adverse effect on performance of the equipment if not maintained. Noncritical items must be maintained periodically but do not have an immediate impact on performance. Noncritical items include the housing and liners. Both should be in- spected and maintained as directed in the operator’s manual. Unless left unchecked for years, neither housing nor liners affect performance or cause unexpected downtime. If inspected and maintained, the housing should last many years. Liners, depending on manufacturer and materials, can last two years. The rotor (including bearings), hammers, and screen grates are critical to wood hog performance. If these are not maintained on a regular interval, Gear Guide Grinder Update high-volume hammermill When your objective is high-tonnage finish-grinding of waste wood with minimal energy consumption, the Model 15300 Industrial Grinder for Schutte-Buffalo Hammermill is your best choice. Featuring heavy plate construction and internal ribbed liner plates, the Model 15300 is available with the option of gravity or pneumatic discharge. The 72 inch (183 cm) rotor width allows for maximum discharge area. At the same time, the 44 inch (112 cm) rotor diameter provides the tip speed required for high-tonnage throughput using an 1800 rpm motor. With a wide variety of screens and ham- mer options, Schutte- Buffalo Hammermill can custom configure a Model 15300 Industrial Grinder to meet your specific needs. www. hammermills.com The Model 15300 Industrial Grinder offers custom configuration and energy efficiency. hurricaNe griNds a swath Vecoplan offers the unique Hurricane dual shaft shredder. This heavy- weight, two-story high machine is designed to process construction and demolition debris, municipal solid waste, plastics, wood, paper, and all types of organic matter. The Hurricane’s throughput of 100+ tons per hour makes quick work of big municipal composting proj- ects, alternative fuel preparation jobs, and large-scale recycling and size reduction needs. A dedicated drive motor powers each of the Hurricane’s twin cut- ting rotors. These are available as either hydraulic drive motors or Continued on page 34 you can expect unexpected downtime and performance variations. Hammers and screen grates are wear items and require the most fre- quent maintenance. If too much wear is allowed, final product quality de- clines. Typically, hammers wear faster than grates. Wear rate is related to the amount of dirt, sand, and grit in the materials and the hardness of the hammer material. Rotor maintenance must be done regularly on the bearings, the most critical part of the rotor. Bearings may be lubricated with grease or recir- culating oil. In either case, keeping the correct amount of oil or grease in the bearing is critical. The most common mistake is overgreasing bearings or not maintaining filters and coolers on recirculating systems, which can cause premature bearing failure. When properly maintained, rotor replace- ment due to wear is very infrequent. Finally, always follow the manufacturer’s recommendations for safety and maintenance. Tips provided by Jeffrey Rader. www.jeffreyrader.com CanadianBIOMASS 33
Canadian Biomass March 2009: Page 33
