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在含硼盐卤蒸发过程中无固体硼酸盐析出的情况下,用芒硝回溶晒水方式制得高含硼浓缩卤水。采用盐酸滴定该浓缩盐卤的pH,对卤水的盐酸-pH滴定曲线进行定性解释的基础上进行定量计算,结果认为浓缩盐卤中硼酸盐是以四硼酸镁的“综合统计”形式存在,即浓缩卤水中除了存在四硼酸镁外,可能还同时存在n2的MgO·nB_2O_s,其存在量必需符合n=2这一表观结果。同时还对不同浓缩盐卤进行粒子配对成盐处理,结果表明盐卤中硼酸盐可以表示为MgO·2B_2O_3。
Boron salt brine evaporation process in the absence of solid borate precipitation, the use of Glauber’s salt solution back into the water to obtain concentrated boron concentrated brine. Hydrochloric acid was used to titrate the pH value of the concentrated brine to quantitatively calculate the hydrochloric acid-pH titration curves of the brine. The results showed that the borates in the concentrated brine are in the form of “comprehensive statistics” of magnesium tetraborate, that is, concentrated In addition to the presence of magnesium tetraborate in the brine, it is also possible for n2 MgO · nB_2O_s to be present at the same time in such an amount as to meet the n = 2 apparent result. At the same time, different salts of salt were salt-treated by particle pairing. The results showed that the borate in brine could be expressed as MgO · 2B_2O_3.