河北省兴隆硫铁矿为沉积型含铅锌黄铁矿床,硫铁矿主要赋存在中下部,呈自形晶粒状嵌布,粒度平均0.074～0.015毫米。对该矿区硫铁矿先后进行三次选矿试验,一致推荐浮选或重介质旋流器预选—浮选的流程。它可以获得含S38％以上,收率85％的硫精矿,锌精矿品位48.33～50.1％,收率81.03～76.28％。根据浮选试验,已完成了选矿厂初步设计和选矿厂修改初步设计。但是年处理约50万吨的选矿厂,基本建设投资大,周期长,年亏损200万元,且对环境的污染严重,所以选矿厂无法上马。为缓解 Xinglong Pyrite in Hebei Province is a sedimentary lead-zinc-bearing pyrite deposit. Pyrite is mainly found in the middle and lower part of the deposit, presenting as a self-shaped grained mosaic with an average grain size of 0.074-0.015 mm. Pyrite mine in the mine has conducted three dressing tests, unanimously recommended flotation or heavy media cyclone pre-selection - flotation process. It can obtain sulfur concentrate containing S38% or more in 85% yield with the grade of zinc concentrate being 48.33-50.1% and the yield of 81.03-76.28%. According to the flotation test, the preliminary design of the concentrator and the preliminary design of the beneficiation plant have been completed. However, about 500,000 tons of processing plant in the year, capital construction investment, long cycle, annual loss of 2 million yuan, and the pollution of the environment, so the concentrator can not be launched. To ease