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Experimental Studies on Chemical Activation of Cementitious Materials from Smelting Slag of Copper and Nickel Mine

机译：铜镍矿冶炼渣中胶凝材料化学活化的实验研究

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摘要

Gellable composite materials (GCM) were prepared from a smelting slag of copper and nickel deposits and cement, and activated using gypsum and chemical activators. The effects of material ratio, dosage of chemical activators, and gypsum on the mechanical properties of GCM were studied. Our results showed that the chemical activators of Na2SO4, Na2SiO3, NaOH, and Na2CO3 could improve the compressive strength of the GCM. Considering the market cost and ease operation, the compressive strength of the GCM could be significantly improved with 2% Na2SO4. The experiment results also showed that the compound chemical activator could improve the compressive strength of gelled material. The strength of GCM reaches 41.6 MPa when 2% gypsum and 80% of smelting slags of copper and nickel deposits were used, which met the national standards requirements of GCM. As such, it is expected that a large amount of copper and nickel mining smelting slag could be utilized for the production of cementitious materials.
机译：由铜，镍沉积物和水泥的熔渣制备可胶凝复合材料（GCM），并使用石膏和化学活化剂对其进行活化。研究了材料比，化学活化剂的用量和石膏对GCM力学性能的影响。我们的结果表明，Na2SO4，Na2SiO3，NaOH和Na2CO3的化学活化剂可以提高GCM的抗压强度。考虑到市场成本和易于操作，使用2％Na2SO4可以显着提高GCM的抗压强度。实验结果还表明，该复合化学活化剂可以提高胶凝材料的抗压强度。当使用2％的石膏和80％的铜和镍沉积物的熔渣时，GCM的强度达到41.6 MPa，符合GCM的国家标准要求。因此，预期可以将大量的铜和镍采矿熔渣用于水泥材料的生产。

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