Applicability of gold tailings, waste limestone, red mud, and ferronickel slag for producing glass fibers. (1st December 2018)

• Record Type: Journal Article
• Authors: Kim, Youngjae; Kim, Minseuk; Sohn, Jungsoo; Park, Hyunsik
• Is Part Of: Journal of cleaner production. Volume 203(2018)
• Page Start: 957
• Page End: 965
• Publication Date: 2018-12-01
• Subjects: Red mud -- Gold tailing -- Ferronickel slag -- Waste limestone -- Basalt fiber -- Recycling; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2018.08.230
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract: Increasing concerns about environmental issues have led to more attention being paid to the recycling of mining wastes and smelting byproducts. In the present study, the utilization of gold tailings, waste limestone, red mud, and ferronickel slag was investigated for producing continuous glass fibers. To verify the applicability of the down-drawing process, the viscosity of the present mixture was measured in the molten state at a high temperature. The viscosity in the low temperature range was estimated using the Mauro–Yue–Ellison–Gupta–Allan equation. Compared to other commercially used basalt fiber systems, a similar fiber-forming temperature in the range of 1466 K–1503 K with viscosities ranging from log 2.5 to log 3.0 dPa s, was observed, which indicates the applicability of the down-drawing process. Measurements of the tensile strength and the Young's modulus of a single filament were carried out following standard test methods. In spite of the thick diameter of the present filament, the fiber produced in the present study exhibited a Young's modulus of 60 GPa–80 GPa, which was found similar to those of other commercial fibers. It is expected that a higher tensile strength will be achieved by reducing the diameter of the filament lower than 10 μm by increasing the drawing speed. Therefore, utilization of the present mixture; mining wastes and smelting byproducts, is feasible for producing continuous glass fibers. Highlights: A new recycling method for glass fibers is suggested. Mining wastes; gold tailing and waste limestone, and smelting byproducts; red mud and ferronickel slag, were utilized. The mechanical properties of the produced glass fiber were measured. Mechanical properties similar to those of basalt fiber were achieved.