自1979年从高硫煤洗矸中回收硫铁矿的工业试验成功以来,目前我国煤系硫精矿年产量已近20万吨,为我国化工事业的发展起到了重要作用。我国煤田中硫的蕴藏量很大,而且从洗矸中回收的硫精矿粒度均匀,品位高,成本低,经济和环保效益显著。因此,煤系硫精矿的回收及应用有着广阔的前景。但是,目前全国多数选煤厂生产的硫精矿中,炭含量在8％左右,仅有少数厂的产品炭含量降到5％以下。这使得硫精矿在化 Since the successful industrial test of recovering pyrite from high-sulfur coal washing waste in 1979, the annual output of coal-based sulfur concentrate in our country has reached nearly 200,000 tons and played an important role in the development of China’s chemical industry. China’s coal reserves in a large amount of sulfur, and from the gangue recovered sulfur concentrate particle size, high grade, low cost, significant economic and environmental benefits. Therefore, the recovery and application of coal-based pyrite has broad prospects. However, at present, most of the sulfur concentrates produced in coal preparation plants in China have a carbon content of about 8%, and only the carbon content of the products of a few plants has dropped below 5%. This makes the sulfur concentrate in the process