论文部分内容阅读
(一)前言 天青石矿是最主要、最常见的含锶矿物之一。以前因售价低、用量少,开采规模很小。至六十年代末、七十年代初,随着锶在化学工业和冶金工业上的广泛应用,国外对天青石矿的需求日益增高,不仅开采高品位矿,也注意了低品位矿的合理利用。因此着手研究其选矿工艺,重视其普查勘探。如加拿大的Kaisser天青石矿,1963年就已进行地质工作,却未进行开采,直到1971年才将生产规模由1万吨/年扩大到5.5～6.0万吨/年,并建立了采、选、加工联合企业。据美国矿业局预测,世界锶(以Sr计)的年增长率为4％,近几年各国锶的生产能力见表(据美国矿业局1980年发表资料)。
(I) Preface The celestite mine is one of the most important and common minerals containing terbium. In the past, due to the low price and low consumption, the mining scale was very small. By the end of the 1960s and early 1970s, with the widespread application of germanium in the chemical industry and metallurgical industry, the demand for celestite deposits in foreign countries has been increasing, not only mining high-grade mines, but also paying attention to the rational use of low-grade mines. . Therefore, we began to study its beneficiation process and attached importance to its census and exploration. For example, in the Kaisers Celestite Mine in Canada, geological work was carried out in 1963 but mining was not carried out until 1971, when the production scale was expanded from 10,000 tons/year to 5.5 to 60,000 tons/year, and mining was established. Processing joint ventures. According to the forecast of the U.S. Bureau of Mines, the world’s annual growth rate (in terms of Sr) is 4%, and the production capacity of various countries in recent years is shown in the table (according to the US Bureau of Mines published in 1980).