富硼渣综合利用试验研究

摘要

富硼渣与焙烧后的硼镁矿的化学组成相似,可代替硼镁矿作为硼和镁的来源.以富硼渣为原料,采用硫酸一步法分解制取硼酸和一水硫酸镁,以及用碳碱法制取硼砂均得到了较佳结果,硼酸的回收率达到71.86％,一水硫酸镁的回收率为55.77％,硼砂的回收率达到71.93％.硼酸、一水硫酸镁和硼砂纯度均很高,符合国家质量标准.比较两种方法,综合环保与市场因素,采用硫酸分解一步法生产硼酸更为合适.%The boron-rich slag is similar to ascharite in the chemical composition,which can replace the ascharite as the source of boron and magnesium.The sulfuric acid one-step method was determined for the preparation of boric acid and magnesium,and the carbonate-alkaline method for borax.The both results are very good.The recovery of boric acid,magnesium sulfate monohydrate and borax is 71.86％,55.77％ and 71.93％ respectively,which fits national quality standards because of their high purity.Compared to the two methods and taking into account environmental and market factors,the production of boric acid and magnesium sulfate monohydrate using sulfuric acid one-step method is more appropriate.