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重晶石液相两次转化法制备碳酸钡新工艺

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这是一篇冶金工程领域的论文.针对重晶石反应活性低、化学加工方法不多的局限,提出一种全新的纯碱转化法.首先探究了盐酸酸解法下重晶石反应粒度、温度、碳酸钠浓度对碳酸钡生成率的影响,结果表明:碳酸钠浓度对反应转化率的影响最大,在有限的实验条件下,当碳酸钠浓度达到 28.57%时,碳酸钡的生成率最高达到 90.05%.其次,在后续的反应中,选择氯化铵对重晶石转化产物进行再次转化制备碳酸铵,此法生产出的碳酸钡产率、纯度较高,作为重晶石与纯碱反应制备碳酸钡的新工艺,突破了传统硫酸钡不与纯碱反应的错误观念,本工艺操作流程简单可行,且氨气、二氧化碳可以回收循环利用,使整个工艺为一个大循环工艺,符合绿色环保理念,为重晶石制备碳酸钡提供了一种全新的生产工艺.
New Technology of Preparing Barium Carbonate by Two Transformations of Barite in Liquid Phase
This is an article in the field of metallurgical engineering.Aiming at the limitation of low reactivity of barite and few chemical processing methods,a new soda ash conversion method is proposed.Firstly,the effect of barite reaction particle size,temperature,and sodium carbonate concentration on the production rate of barium carbonate by the hydrochloric acid hydrolysis method is explored.The results show that the sodium carbonate concentration has the greatest impact on the reaction conversion rate.At limited experimental conditions,when sodium carbonate is used when the concentration reaches 28.57%,the highest formation rate of barium carbonate reaches 90.05%.Secondly,in the subsequent reaction,ammonium chloride is selected to re-convert the barite conversion product to prepare ammonium carbonate.The barium carbonate produced by this method has a higher yield and purity.The new process breaks through the traditional misconception that barium sulfate does not react with soda ash.The process is simple and feasible,and ammonia and carbon dioxide can be recycled and reused,making the entire process a large cycle process,in line with the concept of green environmental protection,and recrystallization.The preparation of barium carbonate from stone provides a new production process.

Metallurgical engineeringBariteSodium carbonateBarium carbonateAmmonium chlorideAmmonium carbonateNew technology

王祥碧、周骏宏、马磊、李海艳、韩维玲、万宗静

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黔南民族师范学院磷化工实验室,贵州 黔南 558000

贵州胜泽威化工有限公司,贵州 贵阳 550300

冶金工程 重晶石 碳酸钠 碳酸钡 氯化铵 碳酸铵 新工艺

贵州省科技计划项目黔南民族师范学院科研项目黔南州科技计划项目黔南师院科研创新基金贵阳市科技计划项目贵州省科技计划项目

黔科合支撑[2021]一般307QNYSKYPT2018002黔南科合工字[2019]14号QNSY2018CG005筑科合同[2021]49-2号黔科合支撑[2023]一般463

2024

10.3969/j.issn.1000-6532.2024.05.008

矿产综合利用
中国地质科学院矿产综合利用研究所

矿产综合利用

CSTPCD
影响因子：0.643
ISSN：1000-6532
年,卷(期)：2024.45(5)