Method and apparatus for melting frits for inorganic oxidic surface
coatings by electric resistance heating
    1.
    发明授权
    Method and apparatus for melting frits for inorganic oxidic surface coatings by electric resistance heating 失效
    通过电阻加热熔化无机氧化物表面涂层的玻璃料的方法和设备

    公开(公告)号:US4246432A

    公开(公告)日:1981-01-20

    申请号:US960335

    申请日:1978-11-13

    CPC分类号: C03B3/00 C03B5/03

    摘要: An electric furnace for the continuous melting of frits for inorganic oxidic surface coatings, comprising a substantially rectangular melting chamber, a working chamber separated from the melting chamber by an immersion dam, means for the introduction of raw materials to the melting chamber, and electrodes within the melting chamber for the transmission of electrical energy to the melt, the ratio of the effective electrode surface area to the area of the bottom of the melting chamber being less than about 0.1. Advantageously the supply of energy to the electrodes is regulated by supplying a constant current with a constant output stream, the surface of the melt is covered with about 1 to 10 mm of unmelted frit, the average dwell time of the melt in the furnace is from about 3 to 6 hours, the frit is free from nitrates, the melt is about 5 to 20 cm deep and the frit is introduced thereto from a height at least 50 cm above the level of the melt.

    摘要翻译: 一种用于无机氧化物表面涂层的玻璃料的连续熔化的电炉,包括基本为矩形的熔融室,通过浸渍坝与熔化室分离的工作室,用于将原料引入熔化室的装置, 用于将电能传输到熔体的熔化室,有效电极表面积与熔化室底部面积的比值小于约0.1。 有利的是,通过用恒定的输出流提供恒定电流来调节向电极的能量供应,熔体的表面被约1至10mm的未熔化玻璃料覆盖,熔体在炉中的平均停留时间来自 约3至6小时,玻璃料不含硝酸盐,熔体约5至20厘米深,玻璃料从熔体高度至少50厘米的高度引入玻璃料。