Research And Prediction On Optimal Marginal Grade International And Domestic Phosphate Rock Resources Development

With the rapid development of world economy, the world phosphate rock production has shown a growth trend, and the quality of phosphorus ore is reduced, the grade of phosphate rock fall.Over the past few years, with a large number of mining global rich, high grade phosphate ore production has led to shrinking.Phosphate rock is a kind of important difficult regeneration of non-metallic mineral, with decreasing recoverable reserves, increasingly reflect the resource value.To maximize the simple pursuit of economic benefits will result in phosphate rock resources waste, is not conducive to the protection and rational utilization of phosphate rock resources, while reducing the phosphorus ore mining period.In the process of phosphorus mining, marginal grade is one of the most important, the most basic parameters.Marginal grade directly affect the choice of phosphorus ore body morphology and phosphate rock reserves, and then the construction of, phosphorus mine production scale, benefit, equipment selection and production life, but also affects the utilization of phosphate resources rate.Therefore, the marginal grade is a has the significant influence to the mine economic benefits and social benefits of the technical and economic parameters.Optimization of marginal grade, also is one of phosphorus mine management parameters optimization of the core content.Phosphate rock resources in China is rich in resources, has proven the total second only to Morocco, ranked second in the world, but the real available phosphate rock resources in our country is not very rich.We are a socialist country, to determine the optimal marginal grade phosphate ore mining should proceed from two aspects of mineral resources utilization and economic benefits.That is to say, should make full use of the mineral resources, but also economic and reasonable, and strive to achieve as much as possible mineral products with the least consumption of labor, and should not be like that in capitalist countries, the maximum economic effect as the standard grade index only, do not consider the reasonable development and use of resources. Through the analysis and Research on the relationship between international and domestic situation, reserves of phosphate ore resources consumption and production, the production cost of phosphate rock, phosphorus ore market price and optimal marginal grade phosphate rock, fitting and utilization of phosphorus resource equation, and then forecast the trend of international and domestic phosphorus ore resources development in the next ten years.Then the maximum present value price theory and the modified optimal marginal grade of international and domestic phosphorus ore resources to make estimates of quantitative analysis and the theory of.According to the international and domestic situation and the phosphorus ore mining of phosphate ore price trend, this paper proposes optimal marginal grade phosphate ore mining different phosphorus ore market prices, through the phosphorus ore in the optimal marginal grade of mining, will help to improve phosphorus utilization efficiency, reduce resource depletion rate of phosphorus, achieve international and domestic phosphate rock resources sustainable development and utilization of pure.