利用金川水淬镍渣尾砂开发新型充填胶凝剂试验研究

杨志强; 高谦; 王永前; 倪文; 陈得信

doi:10.11779/CJGE201408016

利用金川水淬镍渣尾砂开发新型充填胶凝剂试验研究 English Version

杨志强^{1, 2},
高谦^1,,
王永前²,
倪文¹,
陈得信²

1. 北京科技大学金属矿山高效开采与安全教育部重点实验室,北京 100083; 2. 金川集团股份有限公司,甘肃金昌 737100

基金项目: 国家高技术研究发展计划（863计划）项目（SS2012AA062405）

详细信息

作者简介:
杨志强(1957- ),山西万荣人,教授级高级工程师,博士生导师,主要从事金属矿充填法采矿安全与管理以及废弃物资源化利用等方面的科学研究与推广应用。E-mail: yzq@jnmc.com。

中图分类号: TD853
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出版历程
- 收稿日期: 2014-01-12
- 发布日期: 2014-08-18

Experimental study on new filling cementing material using water-hardening nickel slag tailings of Jinchuan Mine

1. Key Laboratory of High Efficient Mining and Safety of Metal Mine, Ministry of Education, Beijing 100083, China; 2. Jinchuan Group Co., Ltd., Jinchuang 737100, China

摘要

摘要: 金川镍矿到2012年堆存镍铜炉渣3.3×10⁷ t,每年还产出镍铜渣2.5×10⁶ t。水淬镍渣提铁后每年排出1.25×10⁶ t镍渣尾砂废弃物。利用冶金废弃物开发矿山充填胶凝剂,不仅可以实现废物资源化利用,而且还能够降低充填采矿成本,提高采矿经济社会效益。针对金川水淬镍渣尾砂所潜在的活性,采用机械活化和化学活化两种方式,进行了镍渣尾砂新型充填胶凝剂试验研究。研究结果表明,镍渣尾砂、脱硫石膏、电石渣、水泥熟料的最佳比表面积分别为620,200,200,300 m²/kg。化学活化采用脱硫石膏和电石渣为主激发剂,以硫酸钠和水泥熟料为辅激发剂,由此确定了镍渣尾砂掺量为85%,脱硫石膏、电石渣、硫酸钠和水泥熟料的复合激发最佳掺量分别为5%,5%,3%和2%。外加0.156%的PC高效减水剂,配制成胶砂比1∶4,料浆浓度为79%的充填料浆,7 d和28 d充填体强度分别达到2.9,6.3 MPa,满足金川矿山安全采矿对充填体强度要求。由此可见,开发的新型充填胶凝材料可以替代水泥应用于金川矿山胶结充填采矿。
- 水淬镍渣尾砂 /
- 充填胶凝剂 /
- 充填体强度 /
- 水化机理
Abstract: By the end of 2012, the stockpiled quantity of nickel copper slag of Jinchuan Mine in China was 3.3×10⁷ t, and 2.5×10⁶ t is yielded every year. The quantity of discharging waste nickel slag every year is 1.25×10⁶ t when the iron is extracted from the water-hardening nickel slag. Using metallurgical waste to develope a new type of filling cementing agent for mines can realize recycling use of waste and may reduce the cost of filling mining. Based on the characters of the water-hardening nickel slag of Jinchuan Mine, both the mechanical activation and chemical activation are implemented to obtain a new type of filling cementing agent. Based on the mechanical activation, the best specific surface areas of nickel slag tailings, desulfurization gypsum, calcium carbide slag and cement clinker are respectively 620, 200, 200 and 300 m²/kg. The chemical activation may use desulfurization gypsum and calcium carbide slag as the main activators, and sodium sulfate and cement clinker as the auxiliary ones. When the mixing amount of nickel slag tailings is 85%, the optimal mixing amounts of the compound activating dosage are respectively 5%, 5%, 3% and 2%. If the PC high efficiency water reducing agent of 0.156% is added, the strengths of filling body for 7 and 28 d will be respectively 2.9 and 6.3 MPa when the cement-sand ratio is 1∶4 and the concentration of the slurry is 79%, which can meet the strength of filling body for safe mining in Jinchuan Mine. It is seen that the proposed new type of filling cementing agent can replace cement for filling mining in Jinchuan Mine.
- water-hardening nickel slag tailing /
- filling cementing agent /
- filling body strength /
- hydration mechanism

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参考文献(12)

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