MMFL has been mining and processing the Minjingu ore into powder for direct farm application in Tanzania and for the export market.
An open cast mines the ore and about 165,000 metric tons of phosphate ore is extracted per year. About 100,000 metric tons of the soft Rock Phosphate is beneficiated. The beneficiation of the phosphate ore to about 30% P2O5 is done mainly through sun drying, primary sieving and sorting, rapid drying, final sieving and gravity classification to acceptable standard specification.The Minjingu deposit was discovered in 1956 by Gold Fields Mines, a South African company that was conducting a geophysical survey over the lake area. Subsequent to several field surveys and detailed laboratory analyses of samples taken from the area, a statutory mining company by the name of Minjingu Phosphate Company (MIPCO) was established under the auspices of the Tanzania State Mining Corporation (STAMICO).
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