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(一)佛罗里达磷矿生产现状 佛罗里达是美国和世界上最大的磷矿产区,磷矿可采储量为26亿吨,约占全美总储量的46％,1982年它的磷矿产量占美国总产量的75％,早在1888年就已建矿开采,主要集中在中部和北部区域,波克县和希尔斯巴勒县的磷矿产量占佛罗里达总产量的90％。现已有Agrico、AMAX等11家公司在开采中部的磷矿资源,只有Occidental化学公司在北部矿区开采。 佛罗里达矿床的主要矿石类型为:陆地砾状磷块岩、软质和硬质磷块岩、河底砾状磷块岩、铝磷酸盐和霍托层含磷白云岩。现主要开采的是陆地砾状磷块岩矿床,它的矿体平均厚度为9米,矿石质地松脆,呈园卵状,粒度为2.54厘米～400目,矿石颜色为灰、黄、褐、绿及黑色等。这种矿石的成份
(I) Status of Florida Phosphate Rock Production Florida is the largest phosphate rock production area in the United States and the world. The recoverable phosphate rock reserves amount to 2.6 billion tons, accounting for 46% of the total reserves in the United States. In 1982, its phosphate rock production accounted for 75% of the production was built and mined as early as 1888, mainly in the central and northern regions, with phosphate rock production in the County of Polk and Hillsborough accounting for 90% of Florida's total output. Eleven companies such as Agrico and AMAX are now mining phosphate rock in the central part of the country, and only Occidental is mined in the northern mining area. The main types of ore deposits in the Florida deposit are terrestrial pebbly phosphorite, soft and hard phosphorite, riverbed pebbles, aluminophosphates and Hodophosia dolomites. The main mining is the land pebble phosphorite deposit, the average thickness of its ore body is 9 meters, crushed ore texture, was garden-like, particle size of 2.54 cm ~ 400 mesh, the ore color is gray, yellow, brown, Green and black. The ingredients of this ore