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1973年,美国处理了4200多万吨的磷酸盐岩石。由于国际上增长的对肥料的需要,预计至1977年的几年内每年平均增加5％的生产速度。为了适应需求,提高选厂生产能力,进行了使用大型浮选槽研究试验。最近在佛罗里达州(Florida)布腊德莱(Bradley)地区的海恩斯沃斯(Haynsworth)矿进行了9个多月的鉴定工作。实践证明使用大型浮选槽选别可以获得合
In 1973, the United States handled more than 42 million tons of phosphate rock. Due to the growing international demand for fertilizers, an average increase of 5% in production rate is expected every year in the few years to 1977. In order to meet the demand, improve the processing plant capacity, carried out using large-scale flotation tank research test. More than nine months have passed since the recent identification of the Haynsworth mine in the Bradley area of Florida. Practice has proved that the use of large flotation selections can be obtained