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Kinetics of the removal of magnesium from phosphate ore with diluted acid

Progress in Natural Science:Materials International 2000年第7期 37-41页

作者：陈欣王励生魏方菲韩秀峰 Chemical Engineering College Chengdu 610065 China Sichuan University

The kinetics of magnesium removal from phosphate ore with diluted sulfuric acid was studied. The experimental results showed that hydrogen ion concentration, temperature, reaction time and particle size distributions of phosphate ore have different effect on the phosphorus removal and magnesium removal. A kinetic database of magnesium and phosphorus removals from ore was set up. The three-dimensional graphs of phosphorus and magnesium removals versus time and reaction conditions were drawn by a computer. The kinetic equations were developed.

关键词： phosphate ore magnesium removal kinetics.

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Study on the Performance of Magnesium Leaching in the Desulphurization Process of Industrial Waste Gas by phosphate ore Slurry

Study on the Performance of Magnesium Leaching in the Desulp...

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第二十一届大气污染防治技术研讨会

作者： Wu Qiong Li Shilei Li Chuang WangSiding LiKai Tang Lihong Zhang Dongdong Kunming Univ Sci & Technol

In the present study, phosphate ore slurry as an alternative raw material in wet flue gas *** of the parameters affecting the leaching of magnesium,e.g. temperature, SO concentration, phosphate ore slurry concentratio... 详细信息

关键词： Sulfur oxide phosphate ore Removal of magnesium ions Flue gas desulfurization

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Rare earth extraction from wet process phosphoric acid by emulsion liquid membrane

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Journal of Rare Earths 2016年第7期34卷 717-723页

作者：张利昌陈前林康超马昕杨尊良 School of Chemistry and Chemical Engineering Guizhou University

The recovery of rare earths （RE） during the wet processing of phosphoric acid is very important, the method of emul- sion liquid membrane （ELM） with di（2-ethylhexly） phosphate （D2EHPA） as carrier has the high selectivity while cannot provide a satisfactory extraction rate. Here novel method of emulsion liquid membrane （ELM） using Aniline as carrier to extract RE from the feed solution was proposed. The method could increase the extraction rate of RE in the real sample to 93%. The effects of dif- ferent parameters such as type and concentration of carrier and surfactant, hydrochloric acid concentration, organic to internal phase volume ratio, membrane to external phase volume ratio on extraction of RE3＋ were investigated. Quantitative extraction （〉93%） of RE3＋ was observed with 6 vol.% Aniline and 4 vol.% T 154 liquid membrane at external to internal phase volume ratio of 10 for the feed solution. The proposed method of ELM using Aniline as carrier can be expected to provide a practical, efficient, and economical method for extracting RE from phosphate leach solution with high acidity in the industry of wet process phosphoric acid.

关键词： phosphate ore emulsion liquid membrane extraction rare earths

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