低硅铁尾矿陶粒的制备与应用  

Preparation and Utilization of Ceramsite Made of Low Silica Iron Tailings

作　　者：王德民[1,2] 雷国元[1,2] 宋均平[3] 王涛[3] 刘博华[3] 罗文斌[3] 程依金[3] 刘署[3] 

机构地区：[1]武汉科技大学资源与环境工程学院 [2]武汉科技大学矿产资源高效利用与造块湖北省重点实验室 [3]武汉钢铁(集团)矿业有限责任公司

出　　处：《金属矿山》2013年第9期163-166,共4页Metal Mine

摘　　要：以某低硅铁尾矿为主要原料,对铁尾矿陶粒的配方进行了研究,并考察了尾矿陶粒作为轻质混凝土骨料的应用效果。结果表明:低硅铁尾矿陶粒原料铁尾矿、工业粉状废物与KD的适宜质量比为75∶17∶8,成品陶粒用量为920 kg/m3、水泥用量为220 kg/m3、水灰比为0.37(不含预湿陶粒用水)情况下的铁尾矿陶粒混凝土密度等级为1 200、抗压强度等级为LC5.0,满足《JGJ 51—2002轻骨料混凝土技术规程》中结构保温轻骨料混凝土的要求,产品保温性能良好。Taking a low silicon iron tailings as the main raw material,the paper studies the dosage of iron tailings ce- ramsite,and investigates the performance of tailings ceramsite in applications as lightweight concrete aggregate. The results showed that ： the suitable formula for iron tailings ceramsite is the mass ratio of iron tailings, industrial powdery wastes, and KD is 75： 17：8 ,finished ceramsite dosage of 920 kg/m3 , cement dosage of 220 kg/m3, water-cement ratio of 0. 37 （ exclu- ding water for pre-wetting ceramsite）. Under the formula above, the iron tailings ceramsite concrete owns the density of 1 200, the compressive strength at LC5.0, which meet the requirement for the Insulation structure of lightweight aggregate concrete in JGJSI-2002 standard. The product owns a good insulation performance.

关 键 词：低硅铁尾矿 陶粒 混凝土 

分 类 号：TU528.2[建筑科学—建筑技术科学]