中文摘要：

重金属元素对高能射线具有优良的屏蔽性能,将富含重金属污泥烧制成集料,并利用其制备成防辐射混凝土,可有效解决重金属污染和高密度矿石配制的防辐射混凝土匀质性不良的问题。利用钢铁废水污泥、钡泥、铜渣和电镀污泥作为主要原材料,掺入页岩、淤泥等校正原料,研究了生料的化学组成、烧成制度对防辐射功能集料的矿物组成、力学性能和屏蔽性能的影响规律,提出了各种富含重金属污泥与校正原料的适宜掺配比例和烧成制度。烧制的防辐射集料,其抗压强度〉40 MPa,表观密度均在2.2~3.0g/cm^3之间,对0.662MeVγ射线的线性衰弱系数均大于铁矿石,接近重晶石,其重金属浸出浓度符合GB5080.3—2007《危险废物鉴别标准-浸出毒性鉴别》国家标准要求。

英文摘要：

Heavy metal elements have excellent shielding performance of high-energy rays,heavy metal-rich sludge fired into aggregates,and use it to prepare a radiation-proof concrete,can effectively solve the heavy metal pollution and the homogeneous problem of concrete prepared by high density radiation ore.Use steel wastewater sludge,mud barium,copper slag and electroplating sludge as the main raw material,mixed with shale,silt correction raw material,the chemical composition of raw material,firing system for radiation protection function aggregate mineral composition,the influence of mechanical properties and shielding properties,various heavy metal-rich sludge and correction of suitable raw materials blending ratio and the firing system.Fired radiation aggregate,compressive strength 40 MPa,apparent density of 2.2 ~ 3.0g/cm~3,for 0.662 MeVγray linear weak coefficient greater than iron ore,barite close its heavy metal,and leaching concentration in line with GB5080.3—2007 ＂identification standard for hazardous wastes-identification for extraction procedure toxicity＂ national standards.