| EFFECT OF FINE GRINDING ACTIVATION ON LEACHING BEHAVIOUR OF SCHEELITE CONCENTRATE |
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| 作者姓名： | LI Ximing CHEN Jiayong Institute of Chemical Metallurgy Academia Sinica Beijing ChinaR.KAMMEL Institut Für Metallurgie Technische Universitt Berlin Germany Research Assistant Institute of Chemical Metallurgy Academia Sinica Beijing China |
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| 作者单位： | Institut Fr |
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| 摘 要： | The influence of mechanical activation on the leaching behaviour of scheelite was studied bymeans of fine grinding in an attritor and subsequently HCl leaching in presence of PO_4~(3-).Results showed that after fine grinding in the attritor,the reaction rate of scheelitewith HCl-Na_3PO_4 solution was remarkably increased,the extraction of W increased fromabout 8 to 99%.The IR spectra and X-ray diffraction analysis indicated that in addition toan enlargement of surface area the fine grinding action had made also changes of fine struc-ture and reactivity of solid surface,hence the leaching process of scheelite can be carried outunder mild leaching conditions.
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| 收稿时间： | 1992-09-11 |
| 修稿时间： | 1992-09-11 |
EFFECT OF FINE GRINDING ACTIVATION ON LEACHING BEHAVIOUR OF SCHEELITE CONCENTRATE |
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| LI Ximing CHEN Jiayong Institute of Chemical Metallurgy,Academia Sinica,Beijing,ChinaR.KAMMEL Institut Für Metallurgie,Technische Universitt Berlin,Germany Research Assistant.EFFECT OF FINE GRINDING ACTIVATION ON LEACHING BEHAVIOUR OF SCHEELITE CONCENTRATE[J].Acta Metallurgica Sinica(English Letters),1992,5(9):153-157. |
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| Authors: | LI Ximing CHEN Jiayong Institute of Chemical Metallurgy Academia Sinica Beijing ChinaRKAMMEL Institut Für Metallurgie Technische Universitt Berlin Germany Research Assistant |
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| Affiliation: | LI Ximing CHEN Jiayong Institute of Chemical Metallurgy,Academia Sinica,Beijing,ChinaR.KAMMEL Institut Für Metallurgie,Technische Universitt Berlin,Germany Research Assistant,Institute of Chemical Metallurgy,Academia Sinica,Beijing,China |
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| Abstract: | The influence of mechanical activation on the leaching behaviour of scheelite was studied by means of fine grinding in an attritor and subsequently HCl leaching in presence of PO_4~(3-). Results showed that after fine grinding in the attritor,the reaction rate of scheelite with HCl-Na_3PO_4 solution was remarkably increased,the extraction of W increased from about 8 to 99%.The IR spectra and X-ray diffraction analysis indicated that in addition to an enlargement of surface area the fine grinding action had made also changes of fine struc- ture and reactivity of solid surface,hence the leaching process of scheelite can be carried out under mild leaching conditions. |
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| Keywords: | scheelite fine grinding acid leaching mechanical activation |
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