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首页> 外文期刊>Carbonates And Evaporites >(5)Experimental study of the Tibetan Dangxiong Co salt lake brine during isothermal evaporation at 25 °C
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(5)Experimental study of the Tibetan Dangxiong Co salt lake brine during isothermal evaporation at 25 °C

机译：（5）25°C等温蒸发过程中藏Dangxiong CO盐湖盐水的实验研究

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Production of lithium carbonate from brines has become the dominate trend in the world since the beginning of the century. Dangxiong Co, located in the interior of the Tibetan Plateau, China, is a carbonate-type lithium salt lake. The lake, rich in Li, B, K and other valuable elements, is of great economic value. The concentration rules of these elements and the salt crystal?lization paths in the brine were studied in an isothermal evaporation experiment at 25 °C. The sequence in sedimentation of the primary salts, which crystallized from the brine during evaporation experiment at 25 °C, was halite (NaCl)-trona (Na_2CO_3NaHCO_3-2H_2O)-zabuyelite (Li_2CO_3)-Glaserite (3K_2SO_4-Na_2SO_4)-sylvite (KC1)-borax (Na_2B_4O_7-10H_2O). This is some different from what one may conclude with the metastable phase diagram of the quinary system Na-K-CO_3-SO_4-C1-H_2O at 25 °C. Lithium precipitation was a continuous process that occurred throughout the whole experiment. But, it was difficult to obtain high-grade lithium salt during the evaporation operation at 25 °C. Potash was precipitated as Glaserite and sylvite in the experiment with high grade, which made the Dangxiong Co salt lake brine suitable to produce potash. Borax was precipitated in the late stage. High-grade borax could be obtained from Dangxiong Co salt lake brine. The experiment results indicate that the lithium carbonate exploiting technology that is being used on the Zabuye salt lake could be applicable to the Dangxiong Co salt lake.
机译：自世纪初以来，盐水碳酸锂的生产已成为世界上世界的主导趋势。 Dangxiong Co，位于中国西藏高原的内部，是碳酸盐型锂盐湖。湖泊，富人，B，K和其他有价值的元素，具有很大的经济价值。在25℃下在等温蒸发实验中研究了这些元素和盐晶的浓度规律和盐晶中的盐晶。初级盐沉淀的序列，其在25℃下从盐水中从盐水中结晶，是宿骨（NaCl）-trona（Na_2CO_3NAHCO_3-2H_2O）-Zabueelite（Li_2CO_3） - 玻璃（3K_2SO_4-NA_2SO_4） - 溶解（KC1 ）-borax（na_2b_4o_7-10h_2o）。这与在25℃下可以使用Quary System Na-K-Co_3-So_4-C1-H_2O的亚稳相形的亚稳相图结论的不同。锂沉淀是整个实验中发生的连续过程。但是，在25℃下蒸发操作期间难以获得高级锂盐。钾肥在高品位的实验中沉淀为葡萄干和斯卡拉特，这使得DangXiong Co Salt Lake Brine适合生产钾肥。硼砂在晚期沉淀。高档硼砂可以从Dangxiong Co Salt Lake Brine获得。实验结果表明，在Zabuye盐湖上使用的碳酸锂利用技术可以适用于Dangxiong Co Salt Lake。

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