Distribution characteristics of phosphate in China
Phosphate deposits of China are widely distributed in 27 provinces (regions and municipalities), relatively concentrated in Yunnan, Guizhou, Sichuan, Hubei and Hunan provin-ces. The retained phosphate reserves of the 5 provinces total 9.915 billion tons, accounting for 74.40% of the total retained phosphate reserves of China, and rich deposits with P2O5 30% are almost all concentrated in the 5 provinces. The distribution of China’s phosphate occurrences is shown in Fig. 4.11.1.
Among the administrative megaregions (above the provincial level), the foremost source for phosphate at the present time is the Southwest Megaregion (including Yunnan, Guizhou and Sichuan), where there are 124 phosphate occurrences and 6.318 billion tons of retained reserves, accounting for 47.42% of China’s total reserves, of which 982 million tons are retained reserves of high-grade phosphate rock with P2O5 30%, making up 86.52% of China’s total reserves of high-grade phosphate rock; the south-central Megaregion (including Hubei, Hunan, Guangxi, Guangdong and Henan) is second with 145 phosphate occurrences and 3.659 billion tons of retained reserves, accounting for 27.46% of the total national reserves, of which only 152 million tons are retained reserves of high-grade phosphate rock with P2O5 30%; the third is the North China Megaregion, followed successively by the East China, Northwest China and Northeast China megaregions.
In the order of phosphate reserves of various provinces, Yunnan Province ranks first, where there are 42 phosphate occurrences and 2.884 billion tons of retained reserves, accounting for 21.64% of the national total, of which 394 million tons are contributed by high-grade phosphate rock with P2O5 30%. Guizhou Province is second with 51 phosphate occurrences and 2.574 billion tons of retained reserves, taking up 19.32% of the national total. This province not only has large phosphate reserves, but the phosphate rock is also relatively good in quality: the reserves of the high-grade phosphate rock with P2O5 30% are 486 million tons, accounting for 42.82% of the reserves of high-grade phosphate rock in China. Hubei Province ranks third, with 1.866 billion tons of retained reserves, accounting for 14.00% of the country’s total, and 130 million tons of retained reserves of high-grade phosphate rock with P2O5 30%, making up 11.45% of the national total. Hunan Province is fourth with 1.731 billion tons of retained reserves of phosphate resources, accounting for 12.99% of the national total, but the quality of the phosphate rock is poor. Sichuan Province ranks fifth, with 860 million tons of retained reserves, accounting for 6.45% of the national total, of which the reserves of high-grade phosphate rock are 103 million tons. Apart from the above-mentioned 5 provinces, the remaining 25.60% reserves are scattered in 21 provinces and regions such as Shandong, Shaanxi, Qinghai and Shanxi.Henan Hongxing Mining Machinery Co., Ltd is the professional manufacturer of complete sets of mining machinery, for example,ore processing plant,sand making machine Welcome all of you to visit our official website.stone jaw crusher:http://www.hxjq-crusher.com/17.html
By the end of 1997, China explored 400 phosphate occurrences, with 13.326 billion tons of retained reserves of phosphate rock, of which categories A+B+C reserves were 6.693 billion tons and category D reserves were 6.633 billion tons and the high-grade phosphate rock with a P2O5 content of 30% contributes 1.135 billion tons and low-grade phosphate rock with P2O5 12% contributes 2.307 billion tons. In addition, there are 7 occurrences where phosphate is associated with other useful minerals, with reserves of 8.38 million tons P2O5. According to the Mineral Commodity Summaries, 1999, the world’s phosphate rock reserves were 12 billion tons with a reserve base of 35 billion tons. If we compare China’s categories A+B+C phosphate rock reserves with the reserve bases of other countries in the world (the average grade of China’s phosphate rock is 18.45% P2O5 and that of the world’s phosphate rock is over 30% P2O5), China’s phosphate reserves rank third in the world, following Morocco and the United States.
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