Method for producing alkali-free glass fiber by albite serving as fluxible clarifying agent

The invention discloses a method for producing an alkali-free glass fiber by albite serving as a fluxible clarifying agent. The method comprises the following steps of: (a) weighing; (b) burdening; (c) melting; (d) accessing; (e) wire-drawing; (f) drying; and (g) subsequent working. The alkali-free glass fiber comprises the following components in parts by mass: 60 to 140 parts of kaolin, 280 to 450 parts of pyrophyllite, 150 to 200 parts of calcined lime, 60 to 90 parts of dolomite, 60 to 90 parts of colemanite, 130 to 230 parts of quartzitic sandstone, 15 to 30 parts of fluorite and 15 to 30 parts of albite, and the sum of the proportions of the components is 1,000. According to the method, the albite is used as a fluxible clarifying agent, so that crystals are prevented from being separated out and damaging a product during forming of the glass fiber. The albite can be used for reducing the fire resistance of the kaolin, so that the industrial production difficulty is reduced. According to the method for producing the alkali-free glass fiber, the cost and the production difficulty are reduced, the stability of melting temperature and the quality of the product are improved, and relatively high economic benefit is realized.