A hydrocyclone with involute feeding.
A cyclone unit design with high efficiency.
Phosphate rock (PR) is a general term that describes naturally occurring mineral assemblages containing a high concentration of phosphate minerals. The term refers to both unbeneficiated phosphate ores and concentrated products. Sedimentary deposits have provided about 80
World phosphate rock production for fertilizer would be on the order of 210 million tons per year by year 2000. Total phosphate rock production therefore might be about 260 million tons per year.
The stockpiles of phosphate ore are mixed with recycled water to form a slurry that is pumped to the Mill. The Mill removes material from the phosphate ore that is either too coarse or too fine and then separates the sand from the phosphate, resulting in a phosphate concentrate.
Phosphate Mining. The sand is returned by pipeline to the mine area for use in land reclamation, while the phosphate concentrate is sent to dewatering tanks and then to the inventory pile. The phosphate minerals are then transported to a separate fertilizer manufacturing plant to make our finished products.
In Florida, after the phosphate rock is extracted, the ore is dumped into a pit at the mine site, and highpressure water guns turn it into slurry. The slurry is pumped to a beneficiation plant. At the processing plant, the slurry mixture goes through a twostep process to separate the
The phosphate comes from sediment that was deposited in layers on the sea floor. The phosphate rich sediments are believed to have formed from precipitation of phosphate from seawater along with the skeletons and waste products of creatures living in the seas.
Phosphate Mining. Gold and silver may be the state's glamorous commodities, but the largest mineral industry in Idaho is not gold or silver. It's phosphate. Phosphate ore is the result of a complicated sedimentary rock formation created at the bottom of the shallow sea that once covered parts of Idaho more than 260 million years ago.
The phosphate ore is treated by a wet screening where most of the fine phosphate fractions are washed off and separated from the coarse silica. Sometimes the situation could be opposite the apatite could be coarse and the gangue minerals could be fine.
Florida's typical phosphate ore (matrix) is found about 1550 feet below the earth's surface and is about 1020 feet thick. Draglines strip off the top layer of earth (known as
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