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现在已能采用高温等离子炉工艺——一种全新的方法,以工业规模生产二氧化锆。把锆石(ZrSiO_4)粒子射入离子弧等离子炉的14000°K“火焰”中,使其熔化,并分解成ZrO_2和SiO_2。自由降落的粒子很快冷却。高熔点的氧化锆(ZrO_2)首先凝结成细枝晶体,接着是硅石凝固。凝结成非晶质透明体的硅石,在苛性钠溶液中很容易浸出,生成有工业价值的硅酸钠。氧化锆晶粒经过洗涤和进一步处理,成为适合于各种用途的产品。可以生产出纯度达99.9%的氧化锆。该流程操作稳定,易于控制,环境污染问题甚微。等离子炉具有以工业规模处理其他矿石和矿物,如从氧化物和氯化物(铝、钽、硅)生产金属、熔融非金(硅石)、硬质化合物(氮化物、碳化物)以及用以建立新的提取冶金方法、(钨、钼、贵金属)均有潜力。
It is now possible to use a high-temperature plasma furnace process - a completely new approach to producing zirconium dioxide on an industrial scale. The zirconium (ZrSiO 4) particles are injected into a 14000 ° K “flame” of an ion arc plasma furnace, melted and decomposed into ZrO 2 and SiO 2. Free-falling particles cool quickly. High melting point zirconia (ZrO 2) condenses first into fine dendrites, followed by silica solidification. Silica, which is condensed into an amorphous transparent body, is easily leached in a caustic soda solution to produce industrially valuable sodium silicate. Zirconia grains have been washed and further processed into products suitable for a variety of uses. Zirconium oxide can be produced with a purity of 99.9%. The process is stable and easy to control, with little environmental pollution. Plasma furnaces have the capacity to process other ores and minerals on an industrial scale such as the production of metals, molten non-gold (silicas), hard compounds (nitrides, carbides) from oxides and chlorides (aluminum, tantalum, silicon) New extraction metallurgical methods, (tungsten, molybdenum, precious metals) have potential.