VDMA

Germany 2019

Best of Germany 2014 - Mining Equipment and Mining Technology

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VDMA 28 VDMA MINING SUPPLEMENT • 2019 training courses and customer workshops are also a regular occur- rence at its branches. Not only do they provide user assistance, but they also share knowledge with, and learn from, mine operators, working together to determine future developments. With more than 1,500 employees worldwide, Becker Mining Sys- tems has a common goal of constantly improving products, adopt- ing the leadership in innovation, and delivering a superior service. Shaft Sinking and Hoisting Systems In 2017, Best of Germany reported that Mosaic was partnering with SIEMAG TECBERG to supply and install large, modern shaft-hoisting equipment for its new K3 mine site located in Saskatchewan, Canada. As of December 18, 2018, Mosaic commissioned the production hoist and sent the first bucket of potash on the overland conveyor to the Es- terhazy K2 mill. The hoist will move millions of tons of potash per year. The K3 hoist tower contains two advanced technology SIEMAG TECBERG hoists with supporting rope sheave assemblies. A six- rope, 6-m Koepe production winder handles a 55-metric ton (mt) payload using a twin drive 11-MW (15,000 hp total horse power), said Michael Krenzer, senior project manager of SIEMAG TECBERG. At a depth of approximately 1,100 m, it is a world leader as far as hoisting and heavy-duty technology. Under current market conditions, Mosaic said the project is ex- pected to generate a rate of return well in excess of its cost of cap- ital, while significantly lowering the risks and costs by eliminating brine management. Seeing the success that Canadians experienced with different potash projects, Sirius Minerals founder of York Potash Ltd. decided to implement similar strategies to develop its Woodsmith mine site, located in Yorkshire, England. For the construction of the four shafts required, York contracted with DMC Mining Services UK Ltd. and DMC Mining Services Ltd., both subsidiaries of KGHM. The project includes two deep shafts (a production shaft and a service shaft) that will ac- cess a polyhalite seam and two smaller shafts to support its Mineral Transport System (MTS). DMC decided to partner with SIEMAG TEC- BERG for the hoisting equipment and Herrenknecht for shaft-sinking equipment for the 1,600-m main shafts and tunnel development. Once the initial development work is complete, four SBR-Winch- es from SIEMAG TECBERG will be used for each Herrenknecht Shaft Boring Roadheader (SBR) to bore the main shafts. An adaptation of tunnel boring machine (TBM) technology married to vertical cutting technology, the SBR delivers higher sinking rates compared to con- ventional drill-and-blast methods, since excavation and shaft lining can take place at the same time. The absence of explosives plus au- tomated excavation also means greater safety levels, as no personnel are required to work in the excavation chamber. The same technique was used by DMC to excavate two deep shafts in Saskatchewan. The SBR is equipped with a telescopic boom and a rotating cutting drum, which excavates the entire shaft cross-section in a single cycle. As the SBR descends on ropes and winches installed on the surface, a permanent lining is inserted in sections from an upper working deck. Altogether the SBR will require eight-stage winches. The SBR is driven in the shaft by four synchronously oper- ated SBR winches. Each SBR winch can also be driven individually to balance the rope load. The ropes are triple-sheaved to minimize the resultant maximum operating load. The 367.5-mt SBR is sus- pended in the shaft on a total of 12 rope strands. The individual SBR winch for its part has a service weight of roughly 67 mt providing a maximum rope tensile strength of 525 kN. The coiled rope package weighs a further 68 mt with a rope capacity amounting to 5,000 m. Above the SBR, there is a working platform for shaft develop- ment. Two utility winches will be installed directly on shaft beams above the two shafts. A sinking hoist unit is to be supplied for trans- porting personnel in the rope-guided kibble, mucking operations and material transport. In addition to the two deep shafts, a third shaft for a TBM will be sunk at Woodsmith to the 360-m level for the MTS tunnel. The MTS will link the Woodsmith mine directly with the Teesside harbor at Mid- dlesbrough. The tunnel is to be driven from three points of attack with several TBMs. One point is the Wilton portal located near the harbor and the other two points of attack will start from MTS shafts at Woodsmith and Lockwood Beck. The Woodsmith TBM will tunnel toward the north and eventually meet the other TBM traveling south from Lockwood Beck. "We are very proud to be part of that major project and pleased that we can show the value and many advantages of group-wide cooperation with networked structures, interlinked production pro- cesses at various locations, state-of-the-art technologies and the provision of sustainable project schedules and, last but not least, can make a decisive contribution to the success of the project," said Michael Flender, project manager at SIEMAG TECBERG. "The deliveries mainly stem from the SIEMAG TECBERG headquarters in Haiger. These are rounded off by deliveries and services from sub- sidiaries Winder Controls Europe Ltd., United Kingdom, and SIEMAG TECBERG Inc. USA. It is advantageous that our group potentials can be used and utilized over the entire project period." For the Woodsmith project, SIEMAG TECBERG was commissioned to provide a total of eight hoisting machines, 16-stage winches and The fi rst 1,800-mt TBM arrives at the Wilton portal on February 18. SIEMAG TECBERG will supply all hoisting machines, stage winches and rope sheaves needed for sinking the MTS shafts.

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