云南黄铁矿床地质特征及开发探讨

云南黄铁矿床探明上表储量居全国第五位,其中单一黄铁矿床占总保有量的58.70%,有色金属伴(共)生黄铁矿占41.30％,分布集中,开发外部条件良好。若能使滇中与滇东北磷、硫优势资源结合,兴建昭通15万t/a磷酸厂,既满足云南发展磷铵与三元高效复合磷肥对磷酸的需求,又可向东南亚出口,将在滇东北形成云南唯一硫资源开发-加工的最大基地。

DISCUSSION ON GEOLOGICAL CHARACTERISTICS OF PYRITE DEPOSITS IN YUNNAN AND THEIR DEVELOPMENT

The pyrite deposits in Yunnan province have the fifth most proven reserves of the country.58.70 percent of the reserves are reserved in monomineralic pyrite deposits and 41.3 percent in polymineralic (or associated with, and accompanied by, nonferrous metals) pyrite deposits. These deposits generally occur as relatively concentrated, enjoying better external conditions for tapping and utilizing. Providing that these advantages are given a full play and the rich phosphate resources of the central and northeastern parts of Yunnan are developed for building a 150000 t/a phosphoric acid factory in Shaotong of the province, the wide demand by Yunana itself on phosphoric acid due to vigorously advancing high-efficacy, phospham and ternary, composite fertilizer trades can not only be met, but a certain amount of phosphoric acid and related chemical products can be exported to the Southeast Asian district. In this way, only the largest base of China, integrating resource tapping and processing, will emerge in Northeast Yunnan.