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一种具有90年代国际先进水平的铝酸钠粗液间接加热连续脱硅新技术由中国长城铝业公司(原郑州铝厂)开发研制成功。这项新技术经过两年的生产实践证明各项技术经济指标均居世界榜首,并获国家发明专利。及1993年度国家科学技术进步一等奖。
A 90 ° international advanced level of sodium aluminate crude liquid indirect heating continuous desiliconization technology by the Great Wall Aluminum Company of China (former Zhengzhou Aluminum Plant) developed successfully. After two years of production practice, this new technology proves that all technical and economic indicators rank first in the world and are granted national invention patents. And the 1993 National Science and Technology Progress Award.