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首页> 外文期刊>Journal of industrial and engineering chemistry >Optimization and modeling of zinc borate (2ZnO·3B2O3·3.5H2O) production with the reaction of boric acid and zinc oxide
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Optimization and modeling of zinc borate (2ZnO·3B2O3·3.5H2O) production with the reaction of boric acid and zinc oxide

机译：硼酸与氧化锌反应制备硼酸锌（2ZnO·3B2O3·3.5H2O）的优化与建模

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Production of zinc borate from boric acid was investigated in aqueous media. Zinc oxide and zinc borate are used as seed crystal to convert all the zinc oxide and to get a high reaction rate. The effect of some parameters such as temperature, stirring speed, H3BO3-to-ZnO ratio, % seed crystal/(H3BO3 + ZnO) and time was studied on zinc borate production by using the 2~(5-1) fractional factorial design and central composite design methods. The chosen experimental parameters and their ranges were as follows: reaction temperature, 68-102 °C; stirring speed, 333-767 rpm; H3BO3-to-ZnO ratio, 3-10; % seed crystal/(H3BO3 + ZnO), 0-1; time, 60-200 min. A statistical model for production of zinc borate was developed between the zinc oxide conversion and relevant parameters by means of variance analysis by using the Matlab computer software. This model was used to determine optimum production conditions. The optimum conditions for production of the zinc borate from boric acid in aqueous media were determined to be as follows: reaction temperature, 85 °C; stirring speed, 766 rpm; H3BO3-to-ZnO ratio, 10; % seed crystal/(H3BO3 + ZnO), 1 x 10~(-3), reaction time, 183 min. Under the optimum conditions, the calculated zinc oxide conversion was approximately 99%.
机译：在水性介质中研究了由硼酸生产硼酸锌。氧化锌和硼酸锌用作晶种，以转化所有氧化锌并获得高反应速率。利用2〜（5-1）分数阶乘设计，研究了温度，搅拌速度，H3BO3-ZnO比例，％晶种/（H3BO3 + ZnO）和时间等参数对硼酸锌生产的影响。中央复合设计方法。选择的实验参数及其范围如下：反应温度68-102℃;反应温度68-102℃。搅拌速度，333-767rpm; H 3 BO 3与ZnO之比为3-10; ％籽晶/（H 3 BO 3 + ZnO），0-1;时间，60-200分钟。利用Matlab计算机软件进行方差分析，建立了氧化锌转化率和相关参数之间的硼酸锌生产统计模型。该模型用于确定最佳生产条件。确定在水性介质中由硼酸生产硼酸锌的最佳条件如下：反应温度为85℃;反应温度为85℃。搅拌速度：766 rpm; H 3 BO 3与ZnO之比为10; ％晶种/（H 3 BO 3 + ZnO），1 x 10〜（-3），反应时间，183分钟。在最佳条件下，计算出的氧化锌转化率约为99％。

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