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为了确定矿渣棉生产过程中调质高炉渣最佳酸度系数,实验室条件下通过四辊离心法制备不同酸度系数的矿渣棉,通过矿渣棉理化性能检测,研究了酸度系数对矿渣棉理化性能的影响规律。研究结果表明,随着酸度系数的增大,矿渣棉直径呈指数增长;矿渣棉主要呈玻璃体结构,随着酸度系数的增大,其析晶温度降低,成纤过程温度变宽;不同酸度系数矿渣棉在弱酸性条件下其微观形貌表面无明显变化,表面仍较光滑;在碱性条件下,其表面均出现腐蚀现象,较为粗糙,有明显的新生水化相出现。矿渣棉实际生产过程中,高炉渣酸度系数应控制在1.0~1.4较为适宜。
In order to determine the optimum acidity coefficient of slag in blast furnace slags during the production process of slag wool, four-roll centrifugal method was used to prepare slag acid wool with different acidity coefficients under laboratory conditions. The physical and chemical properties of slag cotton were tested. Affect the law. The results show that with the increase of acidity coefficient, the diameter of slag cotton increases exponentially. Slag cotton is mainly of vitreous structure. With the increase of acidity coefficient, the crystallization temperature decreases and the temperature of fiber forming process broadens. Different acidity coefficients The microstructure of slag wool under mildly acidic conditions showed no obvious change, but the surface was still smoother. Under alkaline conditions, the corrosion phenomenon appeared on the surface of the slag wool, which was rough and obvious nascent hydration phase appeared. Slag cotton actual production process, the blast furnace slag acidity coefficient should be controlled at 1.0 to 1.4 is more appropriate.