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METHOD AND DEVICE FOR PRODUCING SUPERFINE FIBERS FROM MAGMATIC ROCK
METHOD AND DEVICE FOR PRODUCING SUPERFINE FIBERS FROM MAGMATIC ROCK
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机译:从岩浆岩中生产超细纤维的方法和装置
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摘要
FIELD: production of mineral and refractory wool and fibers used for manufacture of heat-insulating, sound-insulating and filtering devices in various industries. SUBSTANCE: method consists in preheating the starting raw material in metering bin by convective heat and radiant energy released from surface of melt to temperature of 150 +50 C, delivery of raw material and melting it in induction furnace, local superheat of 30 to 50 % of melt in melting zone by 400 to 1000 C relative to high limit solidification temperature. After preliminary cooling of melt during passage through water-cooled channel and draining the melt to forehead of blowing head where temperature of melt is reduced to temperature which exceeds high level solidification temperature by 100 to 300 C; jets of melts are blown into fibers by compressed air at temperature of 170 to 220 C and pressure of 0.4 to 0.65 MPa. Device for realization of this method includes induction furnace which consists in its turn of metal cooled crucible and inductor; metering bin consists of metal reservoir and raw material feed mechanism, forehead with overflow channel mounted for turning about horizontal axis changing angle of inclination of axis of forehead and blowing head. Crucible is provided with cooled channel for delivery of melt and baffle dividing the crucible into communicating melting zone and output zone. EFFECT: enhanced productivity; reduced losses of heat; enhanced operational efficiency. 3 cl, 1 dwg, 1 ex
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机译:领域:矿物和耐火羊毛及纤维的生产,用于各种行业的隔热,隔音和过滤设备的制造。实质:该方法包括通过对流热量和从熔体表面释放的辐射能将计量仓中的起始原料预热到150 +50 C的温度,输送原料并将其在感应炉中熔化,局部过热30%至50%相对于较高的凝固温度,熔融区中的熔体的熔点为400至1000°C。在通过水冷通道的过程中对熔体进行初步冷却后,将其排到吹头的前部,在此处将熔体温度降低至比高水平凝固温度高100至300℃的温度;在170至220℃的温度和0.4至0.65 MPa的压力下,压缩空气将熔体喷流吹成纤维。实现该方法的装置包括感应炉,感应炉由金属冷却的坩埚和感应器组成;计量仓由金属储罐和原料进料机构组成,前额装有溢流通道,可绕水平轴转动,改变前额和吹塑头的轴线的倾斜角度。坩埚设有冷却通道,用于输送熔体和挡板,将坩埚分为连通的熔化区和输出区。效果:提高生产率;减少热量损失;提高运营效率。 3 cl,1 dwg,1 ex
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