Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr
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P R O C E S S I N G S O LU T I O N S New F-Class Screen's Modular Design Offers Multi-unit Configuration Flexibility W.S. Tyler has developed a 10-ft-wide (3.05-m) version of its F-Class vibrating screen, describing it as an innovative, double eccentric screening solution for challenging applications that require minimal vibration transmission during operation. This, according to the company, allows for the use of multiple machines within the same building or structure without the reinforcing measures required to house traditional vibrating screens. Due to its consistent G-force, the F-Class has improved ability to keep screen openings clean, avoiding pegging and making the processing of sticky material possible. W.S. Tyler President Florian Festge said, "Our double eccentric technology has been so effective that customers expressed the need for larger screens as their operations grew. We answered with the largest double eccentric screen to date, the 10-foot-wide F-Class. Its size, paired with its versatility, make the F-Class a viable option for customers who were previously forced to invest in much more expensive technologies, such as A 10-ft-wide (3.05-m) version of W.S. Tyler's F-Class screen is now available. exciter driven screens. For these clients, the F-Class offers reduced capital expenditures combined with enhanced screening performance." According to the company, it engineered two completely new modules for the new screen, measuring 10 x 12 ft (3.05 x 3.6 m) and 10 x 16 ft (3.05 x First Concentrates Produced at Northland's Swedish Iron Ore Project Northland Resources reported that the first iron concentrate was produced at its Kaunisvaara, Sweden, process plant in early December. Karl-Axel Waplan, president and CEO of Northland Resources, noted that the company was able to execute the processes leading to startup of the Kaunisvaara project in less than two years. During this period the company constructed the industrial area, removed more than 4,500,000 m3 of overburden from the Tapuli mine site, and installed a primary crusher, conveyor belts, grizzly building and ore sheds. Two Metso vertical grinding mills, shown here during installation, are among the major processing equipment items at Northland's iron ore plant, which recently began producing concentrates. 90 E&MJ; • JANUARY 2013 "This is truly a remarkable achievement by the Northland team together with our key suppliers Metso, Peab and Pon CAT in Kaunisvaara. Northland has, all along, been able to keep up with the time schedule that we set up three years ago," said Waplan. Metso supplied and installed the mineral processing equipment for the first process line at the Kaunisvaara process plant, consisting of a primary gyratory crusher, a semi-autogenous/autogenous (SAG/AG) grinding mill, two VTM3000 vertical grinding mills, magnetic separators and two VPA press filters. Northland said it will continue to work toward its next goal which is to begin shipping concentrate to customers early in the first quarter of 2013. Northland plans to produce 1.4 million dry metric tons of highgrade (69%) iron ore concentrate in 2013 and 3 million dmt in 2014. It expects to reach rated production capacity of 4 million dmt/y in the third quarter of 2014. www.e-mj.com