论文部分内容阅读
在国际市场上,矿物仅是一种量大、价廉的原料,而矿床又总是远离市场,所以在矿物的价格中,运输费常占较大的比重。如日本煤的价格中,有60％是消耗于运输的,可见运输是矿物处理中的一个重要环节。运输方式有铁路、水运、公路和管道运输。管道输送矿浆是在十九世纪末开始研究的,1900年在美国首次建成并运转,到1980年美国已有72.4万公里的运输管道。 1982年全世界将建造运输管道21万公里,耗资将达1500亿美元,1982～2000年期间还将有更高的增长。 除了运输经细磨的矿浆外,现在块煤也可用管道运输。美国在1973年建立了一座试验厂,试验结果较好,于1980年正式建成块矿管道运输系统,块煤的最大粒度为100毫米,运输能力为900吨/小时。
In the international market, the mineral is only a large amount, cheap raw materials, and the deposit is always away from the market, so the price of minerals, transportation costs often account for a large proportion. For example, 60% of the price of Japanese coal is consumed in transportation, showing that transportation is an important part of mineral processing. Mode of transport by rail, water transport, road and pipeline transport. Pipeline slurry began to be studied at the end of the nineteenth century and was first constructed and operated in the United States in 1900. By 1980, the United States already had a total of 724,000 km of shipping pipelines. In 1982, 210,000 km of transport pipelines will be built around the world, which will cost 150 billion U.S. dollars and there will be a further increase from 1982 to 2000. In addition to transporting finely ground pulp, lump coal can now also be piped. The United States established a pilot plant in 1973 with good test results. It formally established a lump ore transportation system in 1980 with a maximum particle size of 100 mm and a transportation capacity of 900 t / h.