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最近30多年,奥托昆普公司所属矿山成功地使用了胶结充填,从而增加了矿石产量并提高了回采工作面作业的安全条件.使充填材料硬化,一般是靠添加波特兰水泥,由于波特兰水泥价格高,迫使寻找便宜的胶结料.1960—1970年首先在凯列奇矿用高炉渣进行了试验,这些试验一直在进行着,从1978年在皮海萨米矿,首先正式用高炉渣作为胶结料,随后1979年用于维汉蒂矿,1983年又用于凯列奇矿和范马拉矿.其它可作胶结料的材料研究了粉煤灰、泥煤灰及其它冶金炉渣,这些胶结料可以部分地代替水泥,可是用这些材料比用高炉渣的经济效益差.生产水泥的能源消耗主要在焙烧炉,当用炉渣时,可在很大程度上节省这部分能源.奥托昆普公司的矿山由于利用了高炉渣作为充填的胶结料,在1981年就节约了460万芬兰马克(约100万美元).
In the last 30 years Outokumpu’s mines have successfully used cemented fill, which increases ore production and increases the safety conditions at the working face. Filling the material hardens, usually by adding Portland cement, The high price of Portland cement has forced the search for cheaper cementitious materials. The first tests were carried out in the Kailiqi mining blast furnace slag from 1960 to 1970. These tests have been going on since 1978 at Pihai Sami Mine, Blast furnace slag was used as a cementitious material and subsequently used in the Vihatii mine in 1979 and in the Kailiqi mine and Fan Mala mine in 1983. Other materials that can be used as cementitious materials were studied for fly ash, peat ash and other metallurgy These cements can partially replace cement, but the economic benefits of using these materials over blast furnace slag are poor.The energy used to produce cement is mainly in the roaster, which can be largely saved when using slag. Outokumpu’s mines saved 4.6 million Finnish marks (about $ 1 million) in 1981 due to the use of blast-furnace slag as filling cement.