【摘要】 铁尾矿是铁矿选矿过程中产生的固体废弃物,大量铁尾矿堆积在尾矿库中不仅浪费了资源,也增加了企业运行成本,更会危害当地生态环境。以杨家湾尾矿库低硅铁尾矿为主要原料,掺入了铜尾矿、污泥等固体废弃物,通过烧结法制备陶粒。在铁尾矿、铜尾矿、污泥、煤粉质量比8∶1∶1∶1,水料比1∶5,烧结温度1 100℃、烧结时间50 min条件下,制得烧结陶粒滤料,其表观密度为1 544.90 kg/m~3,堆积密度785.7 kg/m~3,筒压强度3.23 MPa,1 h吸水率25.9%,含泥量0.98%,空隙率51.37%,比表面积0.52×10~4 cm~2/g,盐酸可溶率1.80%,破碎与磨损之和0.70%,满足GJ/T 299—2008《水处理用人工陶粒滤料》人工陶粒滤料指标,可以作为水处理用人工陶粒滤料,具有工业化应用前景。更多还原

【Abstract】 Iron piled tailings tailings are not solid only wastes wastes produced resources,but iron during also from iron ore increases beneficiation the process.A large threats as amount the of iron surrounding material,mixed ratio tailings ecolog-up in the pond this operation tailings cost were and used method.In ical environment.In copper paper,low-silica and tailings to Yangjiawan ceramisite pond sintering the the raw mass100 with tailings,tailings,sludge other solid wastes prepare to filter1∶5,at kg/m~3,a by of 50 iron copper pared tailings,sludge,coal ceramisite is an8∶1∶1∶1,water apparent material of ratio544.90 of sintering bulk temperature of 1kg/m~3,a℃for cylinder min,the pressure pre-3.23 area filter water had density1 density of ratio 785.7of of surface MPa and 0.52×10~4 1h absorption rate of this of 25.9%,with ceramisite silt filter content in of 0.98%,void 51.37%and sum specific of of of cm~2/g.The solubility requirements be of hydrochloric“Artifical acid ceramsite was filter 1.80%,with material the water potential breakage and wear 0.70%,meeting ron the can GJ/T artificial299—2008ceramsite for great treatment”.Therefore,this of iore tailings used as filter for water treatment and has industrial application.更多还原