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Process for the upgrading of rock phosphate Download PDF Info Publication number US3067023A. US3067023A US60302A US6030260A US3067023A US 3067023 A US3067023 A US 3067023A US 60302 A US60302 A US 60302A US 6030260 A US6030260 A US 6030260A US 3067023 A US3067023 A US 3067023A Authority US United States
Upgrading Phosphate Ores Process Development. ... For this reason, testing is often a necessity when looking to upgrade phosphate rock with a rotary kiln. Testing is commonly carried out first at batch scale to determine initial process data such as time and temperature profiles. Once batch kiln testing is complete, the process is tested on a ...
In this investigation, studies were carried out on the process of thermal upgrading of Maz dag Turkey phosphate rock in a fluidized bed. The studies involve the effect of the important variables such as process temperature, air flow rate, particle size and attrition of phosphate particles. The calcined product was water-leached.
Jan 01, 2003 In this investigation, studies were carried out on the process of thermal upgrading of Maz da g Turkey phosphate rock in a bullet6uidized bed. The studies involve the effect of the important variables such as process temperature, air bullet6ow rate, particle size and attrition of phosphate particles. The calcined product was water-leached.
UPGRADING OF PHOSPHATE ORES A REVIEW . ... ABSTRACT The world production of marketable phosphate rock exceeded 145 million ton in 2006. about 95 ... Calcination is the process
The WPA process cannot develop lower grade phosphate rock. Pre-concentration of phosphate rock that ranges from simple scrubbing and screening to more advanced techniques such as flotation and ...
Over 70 of the worlds phosphate rock product is consumed by the wet process for production of phosphoric acid, which is mainly used for fertilizer manufacturing. In this process, roughly 5 tons of phosphogypsum PG are generated per ton of P2O5 produced. On that basis, at least 150 million tons of PG are being added annually to the world stockpile of billions of tons.
Effect of number of carbonation stages on direct carbonation carbonation process this equilibrium will be broken, thus of phosphate rock 0.5 MPa, 0.5 0.212 mm particle size, 30 gl solid reactions 1 and 2 are shifted to the right and more CaCO3 concentration, P3 sintered glass bubbler, 1 m slurry height, 4.2 lmin CO2 is dissolved.
the marketable phosphate rock mined in the United States and process most of the refined mineral in fertilizer upgrading facilities. The balance is principally used to manufacture elemental phosphorus. 8.1 Process Overview There are two products from phosphate rock -
This causes the phosphate rock to be low in value or even unusable as-is. In these cases, the phosphate rock will typically require purification via calcination in a rotary kiln, a process commonly referred to as the upgrading of phosphate ore. Combating Phosphate Challenges Feasibility and
The process of the invention is particularly beneficial as it enables one to upgrade crude phosphate ore or matrix by the removal of slimes therefrom to produce a slurry of relatively clean phosphate rock suitable for use in many phosphoric acid plants.
Phosphate is upgraded to remove slimes therefrom by a process which comprises the steps of a contacting the phosphate ore with a phosphoric acid solution having a concentration of about 1 to 20 weight percent in a desliming unit for a sufficient time to form a suspension containing the slimes and the calcium and phosphate components b passing said suspension through a solids separator to ...
Oct 07, 2002 Oct 07, 2002 1. A process for upgrading phosphatic feedstock prepared from raw phosphate ore, said process comprising the steps a heating said phosphate ore having a FP 2 O 5 weight ratio of about 0.105 to the temperature range of 2200 F. to 2500 F. in a rotary kiln, a traveling-grate kiln, a shaft kiln or a combination of a traveling-grate kiln and a rotary kiln, to volatilize fluorine
In these cases, the phosphate rock will typically require purification via calcination in a rotary kiln, a process commonly referred to as the upgrading of phosphate ore. FEASIBILITY AND PILOT TESTING It is often both necessary and desirable to conduct testing, whether it be to troubleshoot and improve an existing process, collect data for a ...
Show full abstract the process of thermal upgrading of phosphate rock in a fluidized-bed furnace of 10-cm diameter. The studies involve the effect of the important operating variables such as ...
phosphate-ore deposits of Kef Eddour and Oum El Khecheb, located in the Tunisian Gafsa-Metlaoui Basin 25,26. Generally, washing, attrition and desliming methods are used to remove the major part of the clay-type binder 27. Flotation is the most widely used method for the enrichment of medium-grade phosphate rock.
How Rotary Kilns are used in Upgrading Phosphate Ores Separation of Carbonates. When the impurities are carbonaceous materials, such as in sedimentary calcareous ores, the... Decomposition of Organic Components. Phosphate rock is commonly found in