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CN 108342595 B 说 明 书 2/5页 线,进行卤水中硼和锂的同步分离提取,在简化操作及工艺步骤基础上,实现萃取体系的循 环使用。 [0007] [0008] 取,实现硼和锂与卤水基体间的分离,然后分别采用酸性溶液和碱性溶液对有机相中的锂 和硼进行反萃取,实现硼和锂之间的分离,含锂反萃液经浓缩后冷却结晶制备氯化锂或沉 淀制备碳酸锂,含硼反萃液经直接浓缩结晶制备硼砂或酸化后浓缩结晶制备硼酸。它包括 [0011] 本发明提供的技术方案和工艺过程如下: 一种卤水中硼、锂共萃取方法,采用混合萃取体系对卤水中的硼和锂进行同步萃 如下步骤: [0009] [0010] 和锂的油相及萃后卤水; 1)含硼和锂的卤水经酸化后加入Fe(III)混合; 2)采用负载Fe(III)后的共萃剂对步骤1)中的卤水进行萃取,经分离获得萃取硼 3)采用含NaCl的HCl溶液对步骤2)所得油相中的锂进行反萃取,经分离获得含锂 水相和含硼及Fe(III)的油相; [0012] 4)采用沉淀剂对步骤3)所得油相中的Fe(III)进行沉淀,经分离获得Fe(OH)3固 相、含硼油相和含微量硼的NaCl水相; [0013] 5)采用NaOH溶液对步骤4)所得油相中的硼进行反萃取,经分离获得含硼水相和只 含共萃剂的油相; [0014] 6)采用沉淀剂对步骤3)所得含锂水相中的钙、镁、铁离子进行沉淀,经分离获得含 Fe(OH)3的固相和除杂后含锂水相; [0015] 7)采用HCl溶液对步骤6)所得含锂水相中少量溶解态Li2CO3进行转化,获得仅含 NaCl和LiCl的溶液,并经NaOH溶液调节pH后,通过蒸发浓缩结晶分离NaCl获得锂浓缩液; 8)步骤7)中所得锂浓缩液经冷却结晶获得LiCl(或LiCl·H2O)和析锂后母液,或 通过加入Na2CO3溶液经沉淀分离获得Li2CO3及沉锂后母液; [0016] 9)步骤5)中所得的含硼水相经蒸发浓缩结晶获得Na2B4O7·10H2O和析硼后母液, 或经酸化后蒸发浓缩结晶获得H3BO3和析硼后母液; [0020] [0017] [0018] 10)步骤9)中的析硼后母液、步骤4)中含微量硼的NaCl水相及步骤8)中的析锂或 沉锂后母液混合,加入一定盐酸后,用于步骤3)中锂的反萃取; [0019] 11)步骤4)中所得的Fe(OH)3固相与步骤6)中获得的含Fe(OH)3固相混合后,与盐酸 反应溶解,获得含Fe(III)的酸性水溶液; 12)利用步骤5)中只含共萃剂的油相对步骤11)中含Fe(III)的酸性水溶液进行萃 取,经分离获得负载Fe(III)的油相和萃Fe(III)后的水相。油相直接用于步骤2)中含锂、硼 卤水的萃取,萃Fe(III)后的水相直接与步骤1)中酸化后卤水混合。 [0021] 而 且 ,步 骤 1 ) 中 酸 化 后 卤 水 p H 为 1 . 0 ~ 4 . 0 ,所 加 F e ( I I I ) 为 含 F e ( I I I ) 的 固 体 或 溶 液,加入Fe(III)的摩尔量为卤水中锂摩尔含量的0 .1~2 .0倍。 [0022] 而且,步骤2)中共萃剂由萃取剂A、萃取剂B和稀释剂C组成。萃取剂A为一元醇或二 元醇中的一种或多种,所述的一元醇为异辛醇、异戊醇、正辛醇,所述的二元醇为2-乙基-1 , 3-己二醇、2 ,2 ,5-三甲基-1 ,3-己二醇、2 ,2 ,4-三甲基-1 ,3-戊二醇、2-丁基-2-乙基-1 ,3-丙 二 醇 ,含 量 为 1 0 % ~ 8 0 % ( v / v ) ;萃 取 剂 B 为 含 磷 有 机 萃 取 剂 、胺 类 萃 取 剂 、双 酮 类 萃 取 剂 中 的一种或多种,所述的含磷有机萃取剂为磷酸三丁酯、磷酸三异丁酯、三辛基氧化磷;胺类 5

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ORC Waste Heat Turbine and ORC System Build Plans: All turbine plans are $10,000 each. This allows you to build a system and then consider licensing for production after you have completed and tested a unit.

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One project is converting salt (brine) based water conditioners to simultaneously produce power.

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Salt water or brine are huge sources for lithium. Most of the worlds lithium is acquired from a brine source. It's even in seawater in a low concentration. Brine is also a byproduct of huge powerplants, which can now use that as an electrolyte and a huge flow battery (which allows storage at the source).

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