The Magnesium Lithium Ratio Determination of Salt Lake Brine Precipitation Separation and the Preparation of Lithium Carbonate

By using ammonia water and sodium hydroxide solution can separate magnesium and lithium ions in the salt lake brine,the results show that the method can make the Mg-Li ratio of 40∶ 1 salt lake brine separated well.And through evaporating mother liquor and controlling reactor conditions such as reaction temperature 90 ℃,reaction time 40 min,dropping speed 25 mL/min,the high purity lithium carbonate can be prepared.