Exploitation of phosphoric rock by thermal means to obtain thermophosphates
Abstract
This work intends to document the use of phosphoric rock to obtain thermophosphates, from phosphorus sources, from the municipalities of Iza and Sogamoso, Boyacá. The IFA report indicates that the global demand for fertilizers in relation to P2O5 was 45,4 Mt in 2019, and the prospects for phosphates to obtain products could reach 112 Mt by 2022. To achieve this purpose, the method of calcination in an electric oven is reported as one of the most common techniques for the concentration of P2O5. In this sense, a design of factorial experiments 23 was applied, with two levels (low and high) and three factors: temperature (900°C and 1200°C), calcination time (3 and 5 hours) and source of the mineral (RFIZA and RFPC); the particle size (≤0,149 mm) remains constant. The results obtained show an increase in phosphorus concentration in the processed samples, especially those that were subject of higher calcination times and higher temperatures.
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