Enrichment of low-grade phosphorites by the selective leaching method

IF 3.8 4区工程技术 Q2 CHEMISTRY, MULTIDISCIPLINARY

Green Processing and Synthesis Pub Date : 2023-01-01 DOI:10.1515/gps-2022-8150

Y. Raiymbekov, P. Abdurazova, U. Nazarbek

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Abstract

Abstract The selective leaching method presents a new and innovative approach for the enrichment of low-grade phosphate raw materials. The use of acetic acid as a reagent in the leaching process allows for the selective dissolution of carbonates, potassium-, and aluminum-containing compounds, offering a promising solution for the improvement of the recovery rates of valuable phosphorus compounds. This study presents the results of research on the selective leaching of carbonates from low-grade phosphate raw materials and evaluation of its efficiency using a combination of SEM, energy-dispersion and chemical analysis, X-ray diffraction, differential thermal, IR-Fourier spectroscopic, and mineralogical analysis techniques. The results showed an increase in the content of phosphorus(v) oxide from 14% to 22% through the selective leaching process. The enriched phosphate raw materials were also found to be suitable for the production of phosphorus-containing products. This research highlights the potential of the selective leaching method to overcome the challenges faced in the enrichment of low-grade phosphorites and provide a more efficient and sustainable solution for the industry.

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选择性浸出法富集低品位磷矿

摘要选择性浸出法为低品位磷酸盐原料的富集提供了一种新的创新方法。在浸出过程中使用乙酸作为试剂可以选择性溶解碳酸盐、含钾和含铝的化合物，为提高有价值的磷化合物的回收率提供了一种有前景的解决方案。本研究介绍了从低品位磷酸盐原料中选择性浸出碳酸盐的研究结果，并结合SEM、能量分散和化学分析、X射线衍射、差热、红外傅立叶光谱和矿物学分析技术对其效率进行了评估。结果表明，通过选择性浸出工艺，氧化磷的含量从14%提高到22%。还发现富集的磷酸盐原料适合于生产含磷产品。这项研究强调了选择性浸出方法的潜力，以克服低品位磷矿富集过程中面临的挑战，并为工业提供更有效和可持续的解决方案。

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来源期刊

Green Processing and Synthesis CHEMISTRY, MULTIDISCIPLINARY-ENGINEERING, CHEMICAL

CiteScore

6.70

自引率

9.30%

发文量

审稿时长

7 weeks

期刊介绍： Green Processing and Synthesis is a bimonthly, peer-reviewed journal that provides up-to-date research both on fundamental as well as applied aspects of innovative green process development and chemical synthesis, giving an appropriate share to industrial views. The contributions are cutting edge, high-impact, authoritative, and provide both pros and cons of potential technologies. Green Processing and Synthesis provides a platform for scientists and engineers, especially chemists and chemical engineers, but is also open for interdisciplinary research from other areas such as physics, materials science, or catalysis.