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西石门铁矿是我国四大井下金属矿山之一,年产量220万t,矿石硬度 f=8～13,精矿品位66%以上。从选厂到过滤车间输送距离约300m用φ73×5mm 钢管输送精矿浆,寿命仅两年左右,而且还需每年都要“翻一次面”使用。另外管道磨损严重,造成钢管破裂漏浆,污染农田时有发生。为此,西石门铁矿于1991年11月
West Shek Mun iron ore mine is one of the four underground metal mines, the annual output 2.2 million t, ore hardness f = 8 ~ 13, concentrate grade 66%. From the mill to the filter plant transmission distance of about 300m with φ73 × 5mm steel pipe concentrate delivery, life expectancy is only about two years, but also need to be “turned once every year” use. In addition, serious pipeline wear and tear, resulting in leakage of steel pipe leakage, pollution of farmland occur from time to time. To this end, West Shek Mun iron ore in November 1991