磷硅渣提钒及制备磷酸铝工艺

doi:10.16085/j.issn.1000-6613.2018-0292

化工进展 ›› 2018, Vol. 37 ›› Issue (10): 4080-4087.DOI: 10.16085/j.issn.1000-6613.2018-0292

磷硅渣提钒及制备磷酸铝工艺

刘久传¹, 吴和培², 张建霞³, 范兵强⁴, 郑诗礼⁴, 张洋⁴

1 辽宁虹京实业有限公司, 辽宁葫芦岛 125001;
2 攀枝花攀钢集团设计研究院有限公司, 四川攀枝花 617023;
3 中国石油长庆油田分公司第十采油厂, 甘肃庆阳 744100;
4 中国科学院过程工程研究所, 北京 100091

收稿日期:2018-02-01 修回日期:2018-06-23 出版日期:2018-10-05 发布日期:2018-10-05
通讯作者: 张洋,研究员,研究方向为博士生导师,固体废弃物资源化利用。
作者简介:刘久传(1980-),男,研究方向为二次资源回收与利用。
基金资助:
国家自然科学基金面上项目（51674230）。

Extraction of vanadium and preparation of aluminum phosphate from phosphorus-silicate slag produced in phosphorus chemical industry

LIU Jiuchuan¹, WU Hepei², ZHANG Jianxia³, FAN Bingqiang⁴, ZHENG Shili⁴, ZHANG Yang⁴

1 Liaoning Hongjing Industrial Company Limited, Huludao 125001, Liaoning, China;
2 Panzhihua Pangang Group Design & Research Institute Company Limited, Panzhihua 617023, Sichuan, China;
3 Tenth Oil Production Plant Petro China Changqing Oilfield Branch, Qingyang 744100, Gansu, China;
4 Institute of Process and Engineering, Chinese Academy of Sciences, Beijing 100091, China

Received:2018-02-01 Revised:2018-06-23 Online:2018-10-05 Published:2018-10-05

摘要/Abstract

摘要： 磷硅渣作为高磷含钒原料提钒过程中钙化脱磷和铝盐脱硅的固体废弃物，其中含有较多的重金属，如不进行合理处置，不仅造成资源浪费，也会对环境产生较大的威胁，而目前有关该种渣的研究鲜有报道。本文采用多种检测技术分析了磷硅渣中主要成分含量，并开发了一种合理化利用途径——以磷硅渣为原料制备磷酸铝。考察了pH、温度和时间等条件对氧化钙中和脱硫和磷酸铝制备过程的影响。氧化钙中和脱硫过程中，控制终点pH=0.5可以有效消除有价元素P、Al、V的损失，且常温即能达到反应要求；P、Al、V分离过程中，控制终点pH=8.0可以有效消除磷酸铝对V的吸附作用，提高分离效率；净化除杂过程的最优条件为：反应终点pH=12，反应时间2h，反应温度80℃；磷酸铝产品制备过程中，控制终点pH=8.0，磷铝比为最佳，130℃高温转型处理能够使磷酸铝浆料的过滤性能提升30倍。

关键词: 磷硅渣, 提钒, 磷酸铝, 吸附

Abstract: The phosphorus-silicon slag as solid-waste is derived from dephosphorization by calcification and desiliconization by aluminum salt during the extraction of V from the phosphorus-rich raw material containing V. With the high content of heavy metal in the slag, it would become a potential threat to the environment and result in waste of resources without a reasonable processing route. However, researches related with the slag were rarely reported. In this article, the main mineral components and their contents in the phosphorus-silicon slag were analyzed and a route of disposing the slag was developed that P and Al contained in the slag was used to produce aluminum phosphate. The impact of reaction time, reaction temperature and pH on the processes of the neutralization and desulfurization and the preparation of aluminum phosphate was investigated. The investigation indicated that during the process of the neutralization and desulfurization, the loss of P, V and Al could be eliminated at pH=0.5, room temperature. During separating vanadium from aluminum and phosphorus, choosing pH=8.0 can eliminate the adsorption of vanadium on aluminum phosphate, and separation efficiency is improved. During purification of aluminum phosphate, the optimal condition was that pH, reaction temperature and reaction time were 12.0, 80℃ and 2h, respectively. The production of qualified aluminum phosphate was under the conditions of pH=8.0. The filter performance of the slurry was 30 times of that is not disposed, after the slurry of aluminum phosphate was disposed at 130℃.

Key words: phosphorus-silicon slag, extraction of vanadium, aluminum phosphate, adsorption

中图分类号:

X753

刘久传, 吴和培, 张建霞, 范兵强, 郑诗礼, 张洋. 磷硅渣提钒及制备磷酸铝工艺[J]. 化工进展, 2018, 37(10): 4080-4087.

LIU Jiuchuan, WU Hepei, ZHANG Jianxia, FAN Bingqiang, ZHENG Shili, ZHANG Yang. Extraction of vanadium and preparation of aluminum phosphate from phosphorus-silicate slag produced in phosphorus chemical industry[J]. Chemical Industry and Engineering Progress, 2018, 37(10): 4080-4087.

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磷硅渣提钒及制备磷酸铝工艺

Extraction of vanadium and preparation of aluminum phosphate from phosphorus-silicate slag produced in phosphorus chemical industry

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