Biodegradable refractory ceramic fibre and preparation thereof

Abstract

The invention relates to a biodegradable refractory ceramics fiber and a production method thereof. The technical proposal thereof comprises the following steps of: carrying out fine grinding treatment for the following materials according to the following mass ratio: 18-25 wt% of talcum powder or 28-33 wt% of dolomite, 15-40 wt% of wollastonite, 30-50 wt% of quartz sand, 0.5-3 wt % of industrial grade calcium chloride, 0.5-3 wt% of fluorite, 0.2-2 wt% of rare earth metal oxide and 0-3 wt% of zircon sand zircon sand; then adding 0.5-3 wt% of carboxymethyl cellulose or calcium lignosulphonate as a bonding agent; compressing the mixture into blank, then drying and crashing the mixture; heating the crashed mixture in a resistance furnace or an arc furnace at the temperature of 1500-1900 DEG C, then throwing fiber directly or forming fiber under the pressure of 0.3-0.7 Mpa by blowing after the mixture is smelted. The invention adopts natural minerals as raw materials and has low cost and simple technique, and the biodegradable refractory ceramics fiber produced by the invention has high mechanical strength, smooth surface, uniform chemical composition and can be used at the temperature of 1000-1200 DEG C or higher temperature for a long period and the harmfulness on the human body is reduced considerably.

Description

technical field [0001] The invention relates to a biodegradable refractory ceramic fiber and a preparation method thereof. It specifically relates to a biodegradable refractory ceramic fiber prepared by using natural mineral raw materials and a preparation method thereof. Background technique [0002] At present, the traditional refractory ceramic fibers mainly used are mostly aluminum silicate ceramic fibers, which contain relatively high Al 2 o 3 and lower SiO 2 , is alkaline. A large amount of dust generated during the production and use of traditional refractory ceramic fibers is inhaled into the lungs of the human body, and cannot be fully degraded in the lung fluid and deposited in the lungs, which is harmful to human health. According to EU regulations, traditional refractory ceramic fibers are likely carcinogens and fail to meet environmental protection requirements. [0003] In the technical materials that have been put into the market or published at present, ...

AI Technical Summary

Problems solved by technology

The current biodegradable refractory ceramic fibers still have certain defects, such as high cost and price compared with traditional ceramic fibers, low service temperature, low mechanical strength of fibers, and increased brittleness after high temperature use, etc.