Molybdenum News Center

China's first large-scale production of wooden frames Hill Mining companies are Yangjiazhangzi Liaoning Province, located in the western territory of Huludao, Liaoning Province, is China's first large-scale molybdenum mine, the deposit was discovered in 1940 and began mining, 1948 in October Yangjiazhangzi second liberation, to resume production, the establishment of Yangjiazhangzi Mining in April 10, 1949, 1950 production capacity of 600 tons / day, in 1952 expanded to 3000 tons / day, 1953 also expanded to 5000 tons / day, in 1959 and then expanded to 8000 tons / day, in 1959, for two consecutive years in 1960 amounted to 10,000 tons of molybdenum concentrate production. Mine production capacity and ore grade since the 1970s was gradually decline, and Pine Ridge North mine ore before the original design capacity of 7,500 to 8,000 tons ore sunrise, the comprehensive capacity of 2.3 million tons of ore, to the 20th century 80- 90s down to sunrise mine 4500 tons, with an average ore capacity will be integrated 1.45 million tons. Ore grade from "fifteen", above the average 0.15 percent, "five" during the later 1980s, down to about 0.09%. Using underground mining, cableway transport. To the 1999 bankruptcy of molybdenum concentrate produced a total of 127,000 tons / year.