The Asia Miner

JAN-FEB 2018

The ASIA Miner - Reporting Important Issues to Mining Companies in the Asia Pacific Region

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VDMA 49 2018 • VDMA MINING SUPPLEMENT Engineering Russia's Deepest Shaft Norilsk Nickel plans to pursue ore at deeper levels, and the company recently approached SIEMAG TECBERG to provide what will be Russia's deepest shaft-hoisting system. Over the years, the company has provid- ed the hoisting equipment for 10 Norilsk installations, but this one, the SKS1 project, is different. In addition to being more than 2-km deep, SIEMAG TECBERG will be supplying a shaft hoisting system rather than simply supplying individual components and it will guarantee ore produc- tion for the Siberian nickel miners. The SKS1 project will add 500 m to an existing hoisting installation. It will use two types of hoisting arrangements, a Koepe system for the service shaft and a double-drum Blair system for the production side. "For this project, we are supplying a complete system with the best hoisting tech- nology," said Michael Krenzer, senior project manager, hoisting technol- ogy, SIEMAG TECBERG. "This will also be the first 2-km Koepe system used to hoist 2 km in one lift." Both systems were designed and engineered, and will be manufactured by SIEMAG TECBERG. Both will be equipped with SP1 deceleration-con- trolled brakes and the company's traditional slide bearings. The Koepe hoist will be used for service. In addition to the hoist, the system will have a 6.5-m deflection sheave, a large cage and coun- terweight, head and tail ropes, a mobile lifting system (a 4-ton crane attached to guides on the cage floor). It has a 10-ton payload and max- imum operating load of 360 tons (T1 + T2). The Blair production hoist has four 5.75-m, rope-load compensating sheaves, the related steel work and guiding beam and two 30-ton skips. SIEMAG TECBERG also designed a complete loading system at the shaft bottom as well as the discharge system on the surface, together with belt conveyors, and the head ropes and the head rope attachments. "We are now in the supply phase," Krenzer said. "This shaft will go into opera- tion during the fourth quarter of 2019." They are also providing rope handling equipment, such as a 155-ton, 4-rope Klemm lifting device (2,000-kN) equipped with an 1,800-kN friction winch, along with rope reelers, Tucker winches and related horizontal and vertical deflection sheaves. In addition to its shaft construction experience, SIEMAG TECBERG is also familiar with the local Russian machine building guidelines. "An important part of the equipment supply agreement was to be certified locally to work underground," Krenzer said. The Blair production hoist is powered by an 8.6-megwatt motor supplied by Siemens. The weight of the drum shaft alone is 90 tons. The 30-ton skips will travel at 14 m/s to hoist 1.2 million tons of ore to the surface, based on 12 op- erating hours per day and 275 days per year. "The Blair hoist uses a rope- load compensating sheave, and this is only the second time we have supplied some- thing like this," Krenzer said. "It has two ropes attached to one drum. For any number of reasons, the rope load varies. Basically, the sheave is sup- ported by two hydraulic cylin- ders that are connected, which compensate for each other. The use of this system avoids long-term damage. If a coiling failure occurs, for example, this system would detect it immediately and the hoist can be brought to a safe stop." What sets SIEMAG TECBERG apart for others is its detailed engineer- ing and design work, and its ability to fabricate large systems. Over the last 10 years, the engineering team has developed a finite element anal- ysis system to improve existing designs and to produce new drums. The company has its own line specially-designed slide bearings, braking systems and deceleration controls. "We are only one of a few companies in the world with the ability to machine these types of drums," Krenzer said. "And, the lathe on our factory floor can handle drum weights as high as 134 tons. This 90-ton shaft for Norilsk is the largest shaft we have ever built and we will ship it using special trucks into Russia and then by rail to the mine." From a mining engineering perspective, Norilsk's SKS1 project will be a major shaft-hoisting achievement. Designing a Koepe system that will hoist 2 km in a single lift is a feat unto itself. In addition to the 90-ton shaft, SIEMAG TECBERG will also ship about 3,000 tons of equipment to the mine site and they will charter a vessel to transport that gear form Germany to Russia. "This is a very big, exciting project for us with a lot of firsts," Krenzer said. "For many years, Norilsk has relied on our equipment, but now they have asked us to supply a complete system. And, we have guaranteed a yearly output for the mine." Throughout it history, which began in a blacksmith shop in 1871, SIE- MAG TECBERG has always focused on quality craftsmanship and has never shied away from major projects. Today that tradition continues as the company broadens its scope from a component supplier to a sys- tems provider. The double-drum Blair production hoist of � 5.75 m has two ropes per drum, rope-load compensating sheaves, the related steel work with guiding beams and two 30-ton skips. The Blair hoist uses load com- pensating sheaves to avoid long-term damage. s MA rt u n D ergroun D Mining

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