The ASIA Miner - Reporting Important Issues to Mining Companies in the Asia Pacific Region
Issue link: http://asiaminer.epubxp.com/i/786114
VDMA 66 VDMA MINING SUPPLEMENT • 2017 can accomplish it or not is yet to be seen, but at least they are thinking about it at an early stage. That increases the requirements for fully and semimobile crushing stations." The backbone for all these techniques is the conveyor system. "We have brought forward many developments with gearless drive systems and we continue to build our position," Jabs said. "During 2016, thyssenkrupp acquired the Overland Conveyor Co. in Denver and this brings even more conveyor expertise onboard." The company is still refining solutions for steep-angle conveying. "Right now, we see the greatest potential with the Megapipe for steep angle conveying," Jabs said. "Working together with Contitech and Siemens, thyssenkrupp has made a significant investment in terms of tests and prototyping. We conducted a lot of tests and we're sure that this is something that is going to fly quickly." Beyond that, thyssenkrupp is always on the lookout for other solutions, Jabs explained. "There is conventional conveying and then we have some big ideas, but we need something to bridge the gap," Jabs said. "The imagine gap between what miners are accustomed to seeing and the possibilities that are out there. It's two extremes. The Megapipe is definitely in between what currently exists and the extreme steep angle conveying solutions." IPCC was a revolutionary change 10 years ago, Jabs explained, and now steep-angle convey- ing will be the next game changer. Conveyor Ensures Dust-free Transportation of Ore Concentrates Transportadora Callao S.A., the logistics operator of a special cargo terminal at the Port of Callao in Peru, relies on a pipe conveyor to transport zinc, copper and lead concentrates from the warehouse to the terminal. With its ability to navigate curves in three dimensions, the conveyor could be optimally adapted to its 3,000-m routing course. More importantly, the conveying system prevents the con- centrates from escaping into the environment, ensuring dust-free transport to the ship's holds. The Beumer Group handled the en- gineering, procurement (including the steel structure), construction management and commissioning of the system. Located on the Pacific Ocean, Callao is a large Peruvian city, with the largest airport in the country and one of the most import- ant fishing and commercial ports in South America. A modern ship loading terminal for ore concentrates was built in this port and it is operated by Transportadora Callao S.A. About 75% of Peru's imports and exports pass through Callao. To satisfy the increasing demand for these valuable materials, the Peruvian government decided to expand the port. Besides addition- al storehouses, the plans also foresaw the largest, most modern ship-loading terminal in the country. Peru also wanted to change the way the raw materials were transported to the ship-loading areas. Before the construction of the special terminal, trucks were used to transport the concentrates from the warehouses to the port terminal. "Since Transportadora Callao started its operation, they could reduce the truck transports by 130,000 per year," explained Victor Sam, CEO at Transportadora Callao S.A. The company, a consortium comprising five enterprises from the mining and port industries (manufacturers and warehouse logistics operators), obtained a license from the state of Peru for building and operating the necessary infrastructure. The mines in central Peru transport their concentrates to the warehouses about 3 km from the port. That distance required a fully enclosed material handling system. Transportadora Callao opted for the Beumer pipe conveyor. "Together with the responsible persons from the port, we developed a solution that is perfectly adapted to the routing and the ambient conditions," said Helmut Wolf, pipe conveyor engineer for Beumer. The pipe conveyor not only protects the environment, it also con- veys over long distances and navigating tight turns, which reduces or eliminates transfer towers and the associated costs. The engineers use different dimensioning programs to determine the ideal belt de- sign. They calculated the tractive forces and forces that arise during acceleration and deceleration and also determined the possible curve radii. Special idlers and bearings reduce noise levels. "This improves the quality of the employees' day-to-day work environment," Wolf said. "Noise measurements along the pipe conveyor resulted in values that are consistently far below the permitted limit values," Sam said. Beumer supplied and installed a pipe conveyor with a center-line distance of 3,195 m. "Due to the system design and the required system capacity, we designed it with a diameter of 400 mm," Wolf said. "The conveyor transports 2,300 metric tons per hour (mt/h), at a speed of 4.5 m/s and is driven by three 650-kW motors. We equipped the system with filters, strippers, a dedusting unit and a control sys - tem." Trucks or trains offload concentrate at the storage area, where it is transported to an open access station. "A big challenge for us was With its ability to navigate curves in three dimensions, Beumer recently installed a 3-km pipe conveyor to transport concentrate to a new terminal at the Port of Callao in Peru.