西藏地区铜冶炼布局规划及建议

Layout Planning and Suggestions for Copper Metallurgy in Tibetan Area

西藏已探明的铜矿资源储量占全国铜资源储量的一半以上,因而成为我国重要的铜矿资源战略储备基地。西藏地区铜资源主要集中在藏东的玉龙铜成矿带、拉萨至日喀则的冈底斯东段铜成矿带、阿里地区班公湖至那曲地区怒江源的班公湖-怒江铜成矿带。通过分析各成矿带周边地区的工业基础、发展重点、建厂条件和物资运输成本,建议玉龙铜矿的铜精矿全部放在昌都藏东产业园内冶炼加工,拉萨地区和阿里地区的铜精矿运至格尔木藏青工业园内冶炼加工。最后,从建厂规模、冶炼工艺、副产品硫的去向以及污染防治等方面进行了规划,建议在昌都建设一座铜冶炼厂,冶炼规模为35万t/a,冶炼工艺采用富氧底吹、侧吹工艺,冶炼烟气中的SO2用于制备硫酸。

The proved copper reserves in Tibet account for more than half of the national copper reserves, which makes it an important strategic reserve base of copper resources of China. The copper resources in Tibet are concentrated in the Yulong copper metallogenic belt in eastern Tibet, the metallogenic belt in the eastern section of Kailas from Lhasa to Nikazi, and the Bangong Lake-Nujiang River copper metallogenic belt from Bangong Lake in Ngari area to Nujiang River Source in Nagqu area. Based on the analysis of industrial basis, development priorities, the construction conditions and transportation costs of resources in each metallogenic belt area, it was suggested that all the copper concentrate of Yulong Copper Mine be smelted and processed in Qamdo Industrial Park in East Tibet, the copper concentrate from Lhasa area and Ngari area be transported to Tibetan-Qing Industrial Park in Golmud for smelting and processing. And finally, planning was made in terms of plant scale, metallurgical process, use of by-product sulfur, pollution prevention and control, etc. It was suggested that a copper smelter with smelting scale of 350 000 tons/a should be built in Qamdo, the smelting process should be oxygen-enriched bottom blowing and side blowing, and SO2 in smelting flue gas should be used to prepare sulphuric acid.