Inorganic fiber prepared by utilizing industrial tailings and preparation method thereof

Abstract

The invention relates to the field of inorganic fiber materials, and in particular relates to an inorganic fiber prepared by melting industrial wastes at a high temperature, such as iron tailings or copper tailings, and a preparation method thereof. The inorganic fiber comprises the following raw material components by weight percent: 30-80% of industrial tailings, 0-20% of aided component, 20-40% of coke or coal and the balance of adjuvant and surface treatment agent, wherein the weight of the adjuvant accounts for 0.2-10% of that of the industrial tailings, and the weight of the surface treatment agent accounts for 0.1-5% of the industrial tailings. The preparation method comprises the following steps of: adding the necessary aided components and coke or coal in the industrial tailings and adding the necessary adjuvant, fully mixing and pelleting; carrying out high temperature melting in a cupola furnace or a tank furnace; and under the condition that viscosity of high temperature melt is controlled, forming fiber by utilizing centrifugal wire throwing equipment and spraying the surface treatment agent, and cooling to obtain the inorganic fiber. According to the invention, the fiber has good functionality and high value-added comprehensive utilization of the industrial tailings is achieved, thus the inorganic fiber disclosed by the invention can be widely applied to the fields of heat isolation, sound isolation, heat preservation and insulation materials, asphalt modification and the like, has a good application prospect and is especially suitable for the field of building heat preservation materials.

Description

technical field [0001] The invention relates to the field of inorganic fiber materials, in particular to an inorganic fiber prepared by melting industrial waste such as iron tailings or copper tailings at high temperature and a preparation method thereof. Background technique [0002] Inorganic fiber materials are widely used in many fields, such as: for heat insulation or sound insulation layer, as reinforcing fiber for building materials, as raw materials for papermaking, as friction materials such as vehicle brake pads. The raw materials used to prepare inorganic fibers have a wide range of sources, and their products include glass fiber, rock wool, mineral wool, glass wool and so on. [0003] The use of fly ash, red mud, basalt, steel slag, slag, etc. as raw materials to prepare inorganic fibers has been widely used, and there are patent reports, but there is no patent report on the preparation of inorganic fiber materials using iron tailings or copper tailings. [0004...

AI Technical Summary

Problems solved by technology

[0004] The tailings resources are huge, with a large amount of accumulation, and the emissions have been increasing in recent years. If they are not utilized and turned into resources, it will cause huge environmental and safety problems, and waste precious resources.

The previous treatment methods such as landfilling and covering cannot fundamentally solve the environmental and social problems caused by tailings, and the use in road construction, building materials, ceramics and other fields cannot realize the ideal value of tailings. How to realize tailings The comprehensive utilization of mines and the realization of high added value of tailings products have attracted much attention