摘要
研究了低品位硫铁矿采用二段硫化床与劣质高硫煤还原反应生产硫磺的工艺过程。用低品位硫铁矿中的硫与铁资源和高硫煤中的煤与硫资源生产硫磺和还原铁粉,实现了资源的充分利用;克服了品位在17%~20%(质量分数,下同)的硫铁矿,在原矿选矿生产硫精砂工艺过程中产生的尾矿对环境造成污染的问题,弥补了硫精砂生产过程中的缺陷。中间实验产品硫磺达到GB/T 2449—2006《工业硫磺》国家标准,副产品铁矿粉含量高于60%,是用于炼钢厂的优质铁原料。该研究工艺使资源利用达到最大化,符合循环经济的法则,是弥补中国硫、铁资源短缺,多方法寻求资源来源的一种有效途径。
Technological process of producing sulfur by reduction reaction between low-grade pyrite and inferior high- sulfur coal in a two-stage fluidized bed was studied. Technology realized the effective utilization of resources, because it used the sulfur and iron resources in low-grade pyrite and the coal and sulfur resources in the high-sulfur coal to produce sulfur and reduced iron powder. It overcame the pollution problems of mine tailings generated from the production process of pyrite concentrate by flotation of 17% - 20% pyrite （mass fraction） and it compensate the deficiency of pyrite concentrate production process. Sulfur product from the pilot plant reached the national standard GB/T 2449--2006 Sulphur for Industrial Use, and the by-product contained more than 60% （mass fraction） iron ore powder, which was an excellent raw material for steel^making. This research was in line with the circular economy law and maximized the utilization of resources. It was also an effective way to find resources and to make up China＇s shortage of sulfur and iron resources.
出处
《无机盐工业》
CAS
北大核心
2011年第2期47-49,共3页
Inorganic Chemicals Industry
关键词
低品位硫铁矿
流化床
高硫煤
硫磺
low-grade pyrite
fluidized bed
high-sulfur coal
sulfur
