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新西兰首次在连续采矿作业中应用斗轮挖掘机获得经济效益。1984年以前,奥克兰附近钢铁厂的铁矿砂需求量为145万吨/年,矿山一直采用移动式铲运机采矿。自1984年以来,铁矿砂的需求量逐渐增加到1000万吨/年。为了增加矿石产量,经过采矿工艺方案的详细比较,采用了斗轮挖掘机与皮带运输机配合的连续采矿工艺系统。该工艺系统基建投资比较高,但由于能耗低,维修费用少,生产定员少,所以生产成本低。
For the first time, New Zealand has used bucket wheel excavators for economic benefits in continuous mining operations. Before 1984, demand for iron ore at steel mills near Auckland was 1.45 million tons / year and mines have been mining with mobile scrapers. Since 1984, the demand for iron ore has gradually increased to 10 million tons / year. In order to increase ore production, after a detailed comparison of mining technology programs, using bucket wheel excavator and belt conveyor with continuous mining process system. The technology infrastructure investment is relatively high, but because of low energy consumption, maintenance costs less, less production capacity, so the production cost is low.