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August 1999
Volume 51    Issue 8

Past and future trends in phosphate use

Mining Engineering, 1999, Vol. 51, No. 8, pp. 37-42
Roberts, M.C.


ABSTRACT:
The purpose of this paper is to make an assessment of the long-term needs for phosphate rock. This is done by developing a simplified model to describe the most important factors that determine the use of phosphate. Time trends in these factors reveal the forces that have determined the past record of phosphate use. It is hoped that the projection of these trends into the future will provide a useful forecast of the future needs for phosphate rock. The analysis is done on a highly aggregated basis and the perspective is to capture the general, long-term trends. Therefore, annual fluctuations and changes in the various subcategories of phosphate use is not be examined. The focus is limited to the agricultural uses of phosphate in fertilizers, which is more than 90% of the market. This paper examines the total world use of phosphate, rather than the use in any one specific country or region.


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