全尾砂新型充填胶结材料性能试验和改进

• 作 者: 何环莎 高谦 魏微 南世卿
• 机 构: 北京科技大学土木工程与环境学院,河北钢铁集团矿业有限公司,
• 出 处: 矿业研究与开发
• 发表日期: 2012年04期
• 关键词: 胶结材料 全尾砂 减水剂 充填采矿法 外加剂 流变特性 胶结充填 司家营 胶结剂 氨基磺酸盐

针对传统尾矿胶结材料存在用量大、成本高及性能差等问题,试验以水淬渣和其它几种激发剂为胶结剂,以司家营铁矿全尾砂为骨料,制备新型胶结充填材料。在前期大量实验总结的胶结材料配比基础上,加入几种不同类型的减水剂,研究加入减水剂之后的新型胶结材料强度与流变特性的变化。结果表明:加入减水剂的胶结材料与之前的胶结材料相比,强度提高,流变特性增强,可以使矿山二步回采的充填更加高效和安全。

Aiming at the problems of large amount, high cost and poor performance of traditional tailings cementation materials, the experiment uses water quenched slag and several other activators as cementing agents and uses the whole tailings of the iron ore mine in Sijiayingying as the aggregate to prepare a new type of cementing filling material. Based on a large amount of experimentally concluded cementing materials, several different types of water reducing agents were added to study the changes of strength and rheological properties of the new cementitious materials after adding water reducing agent. The results show that compared with the previous cemented materials, the cementing materials with water reducing agent have higher strength and better rheological properties, which makes the filling of two-step mines more efficient and safe.