A consortium consisting of the Siemens Industry Solutions Division and Siemag M-Tec² GmbH, Netphen, has received an order from Datong Coal Mine Group. Co., Ltd., China, to supply two new winders for the Majialiang coal mine (Fig.). The Siemens part of the scope of supply has a volume of more than 4 million €. Completion of the project is scheduled for the end of 2010. The two new winders will be installed in a service shaft which is 537.5 m deep. Siemens is supplying the entire drive equipment, the medium and low-voltage distribution systems and transformers as well as the automation technology, including human-machine interface (HMI) equipment and safety systems. The mechanical components will be supplied by Siemag M-Tec². The larger of the two winders is equipped with a 3,600-kW synchronous motor and enables a double cage with a payload of 50 t to achieve a speed of 9.97 m/sec. The second machine has a power output of 435 kW. This enables winding of a payload of 8 tons at a speed of 6.67 m/sec.
Siemens AG, Industry Solutions Division, Erlangen (D),
Tel.: +49 9131 7-0, www.siemens.com/mining