制备混凝土用细磨镍冶炼水淬渣的活性

Reactivity of Pulverized Slag from Nickel Smelting for Concrete Preparation

研究以细磨镍冶炼水淬渣制备低标号混凝土的工艺。结果表明,细磨的镍冶炼水淬渣部分作骨料,部分作胶凝剂制备低标号混凝土是可行的,可用于路基填充等适宜工程。镍冶炼水淬渣粉活性随磨粉比表面积增加而提高,混凝土强度受镍冶炼水淬渣粉比表面积、用量及添加剂的影响。碱性氧化物含量低、SiO2含量高的酸性镍冶炼水淬渣,欲获得较高的活性,须磨到足够大的比表面积和选用适宜的活化剂。

The technology on low-grade concrete preparation with pulverized slag from nickel smelter is studied. It is found by the results that the low-grade concrete preparation with the pulverized slag from nickel smelting as partly aggregate and partly as gelatinizing agent is practical and this concrete can be used for stuffing or building projects. The gelatinization effect of the pulverized slag of nickel smelting is increased with the increase of the specific surface area, and the strength of the slag concrete is dominated by the fineness and dosage of the pulverized slag and the usage of additives. Ground to fine enough so with large specific surface and using adequate activator are the necessary measures to gain high reactivity for pulverized slag of nickel smelting with low caustic oxide content and high SiO2.