These secondary cleaners serve a wide variety of applications, including mining, material processing, quarrying and other bulk material handling operations. Both products significantly reduce material carryback, and are engineered to accommodate reversing conveyors to avoid damage to the belt or splicing. With steel blades and tungsten carbide tips set into a flexible base, the DT2 cleaners offer simple, effective solutions that can solve a number of carryback-related problems.
Martin DT2H Reversing Cleaner XHD
Designed for particularly demanding conditions, the DT2H reversing cleaner XHD is suited for heavy material loads on belts ranging from 400 to 2,400 mm wide that operate at speeds up to 6.1 m/sec. Carryback accumulations along the return run of the conveyor can occur when the cleaning systems on a conveyor fail to remove most of the material that adheres to the belt after unloading its cargo. Increased buildup results in unnecessary labour costs for cleanup, and can lead to premature failure of conveyor components if left unchecked.
Martin DT2S Reversing Cleaner
Like its larger counterpart, the Martin DT2S reversing cleaner can be installed on belts ranging from 400 to 4,800 mm wide. But unlike the DT2H, the DT2S is designed for a lower maximum belt speed of 4.6 m/sec on belts with vulcanized splices. Mueller pointed out that this is primarily due to the difference in applications: “The DT2S has a slim frame that allows it to fit in spaces as narrow as 178 mm. As a result, the DT2S can be attached to belts that may be too small for primary cleaners.”
Both of the DT2 cleaners can be used in medium to heavy duty environments, providing a lasting solution to a diverse array of complex problems that are caused by carryback and minimizing fugitive material.
Case study
An example of the cleaners’ performance can be found at the Pueblo Viejo mine in the Dominican Republic. Operators were experiencing excessive carryback and dust on its conveyor system, resulting in expensive equipment failures, unscheduled downtime and increased maintenance. Production is 365 days a year, but between April and October moisture can cause cohesion in fine clay particles, causing the material to become sticky. The substance had the consistency of thick toothpaste, which was also able to adhere small chunks of aggregate to the belt, causing destructive carryback that damaged pulleys and headers.
In just two weeks, Martin Engineering technicians replaced the existing belt scrapers at 16 locations with Martin QC1 Cleaner XHD primary cleaners fitted with low-adhesion urethane blades specifically designed for tacky material loads, along with DT2H secondary cleaners. The secondary cleaner blades can endure hot summer temperatures, high moisture content and constant production schedules.
Following the upgrades, operations are now cleaner, safer and more productive, giving executives and stakeholders more confidence in the sustained operation of the mine, which is projected to be profitable for the next 25 years or more.
Additional product details can be found on www.martin-eng.com.
