An efficient approach to utilize copper smelting slag: Separating nonferrous metals and reducing iron oxide at high temperature

Wu, Liushun; Li, Hui; Liu, Kunlong; Mei, Haiqing; Xia, Yunjin; Dong, Yuanchi

doi:10.1016/j.wasman.2023.10.017

Cited by 9 publications

(1 citation statement)

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“…There are about 2010 million tons of zinc smelting slag stored in Guizhou Province, China. Romania has produced about 20.295 million tons of nickel slag since 2000-2010 [1][2][3][4]. Copper-nickel smelting slag has certain Pozzolanic activity, which has been used to prepare mine-filling cementitious material to solve the stability of current mining filling material and high processing cost [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Study on the Effect of Palygorskite on the Properties of Copper-Nickel Smelting Slag-Based Cementitious Materials

Zhu,

Wang,

et al. 2024

Preprint

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In order to study the feasibility of copper-nickel smelting slag（CNSS） and palygorskite for large-scale consumption and utilization in the field of mine filling, gellable composite materials were prepared from copper-nickel smelting slag ,cement and palygorskite. The effects of palygorskite addition and curing time on the mechanical properties and microstructure of copper-nickel smelting slag-based cementitious materials were studied in detail. The results showed that the addition of palygorskite had a positive effect on the curing of the cemented filler of the non-ferrous smelting slag by promoting the early hydration reaction. palygorskite also affected the mechanical properties of the cementitious materials with different maintenance times and the ability to cure heavy metals. The strength of gellable composite materials reaches 23.05MPa when 1% palygorskite, 50% of copper-nickel smelting slag and 48% cement were used, which meet the standards requirements of filling materials for mine goaf. The addition of 1% palygorskite can improve the ability of cementitious materials to solidify heavy metals to realize the economic utilization of solid waste in mining areas.

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