For twenty-five years, the pressurized hydrometallurgical technology for zinc sulfide concentrate has been monopolized by a Canadian company Hudson Bay. Today, the Science and Technology Department of Yunnan Province announced to the outside world that Yunnan Metallurgical Group Corporation has mastered the smelting technology in this field and has obtained independent intellectual property rights. The project manager in charge of technology - Yunnan Metallurgical Group Corporation, Wang Jikun, deputy chief engineer introduced the project developed its own oxygen pressure leaching technology, the direct leaching of zinc sulfide concentrate, the purification of electrowinning output of zinc ingot, the mine Other valuable metals are well recycled. Sulfur is produced as elemental sulfur and the production of zinc is not subject to the sulfuric acid market. Provincial out of the traditional wet zinc smelting roasting, flue gas cooling, acid and other processes, simplifying the process, saving about 30 percent investment. Compared with the traditional zinc hydrometallurgical zinc leaching rate of 98.06%, iron leaching rate of 29.22%. The total zinc recovery rate increased from 89% to 94.25%. According to Wang Ji-kun, according to the international online search query report provided by the Yunnan Provincial Institute of Scientific and Technical Information, the technical and economic indexes of the industrial leaching by pressure leaching are similar to those of foreign leaching technology. Wang Jikun said that Yunnan is an important non-ferrous metal production base in China. Yunnan-Zinc resources rank first in the country, accounting for about 23%. Among them, high-speed rail zinc resources accounted for about one-third of zinc resources in Yunnan, a total of seven million tons, the potential economic value of more than 60 billion yuan. The technology has been piloted for industrialization in Yunnan Province. As the technology is widely used, it will generate greater economic benefits in the province. (Finish)