Lithium Extraction Process by Computerized Cascade Coupling Separation Method
admin
2022-09-17
理化梯次耦合分离法提锂工艺
Lithium Extraction Process by Computerized Cascade Coupling Separation Method
技术编号
QH-001
提供单位
中国科学院青海盐湖研究所
技术大类
资源能源利用技术
联系人
王敏
技术类型
全生命周期资源节约和循环利用技术
电话
13519750944
邮箱
wangmin@isl.ac.cn
适用范围
采矿业,化学原料与化学制品制造业
推荐单位
青海省科技厅
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Technical principle and process routeThis process aims at comprehensive development of lithium and potassium resources from lithium-potassium-rich salt lake brines in the south America. The details of the process are as follows: According to the brine’s chemical compositions, by regulating its main compositions, the types of potassium precipitation from the brine were changed in the process of evaporation. Potassium chloride is the only potash. Thus the processing technology of potassium is simplified. Meanwhile the ratio of magnesium to lithium in the brine is decreased. The ratio is about 1:1 in the concentrated brine. The separation process of lithium from magnesium is also simplified. Thereof the production cost of lithium carbonate is reduced.
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技术提供方中国科学院青海盐湖研究所
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技术主要指标信息盐田工艺中卤水浓缩约20.8倍,成卤率4.8%左右,锂收率88.7%,加工工艺锂的总收率89%,产品为工业级碳酸锂
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商业应用情况在一里坪盐湖锂钾等资源综合利用项目中,我们技术团队根据一里坪盐湖卤水组成特点,设计包括盐田工艺、镁锂分离工艺与车间加工工艺等的锂钾综合利用技术。在盐田工艺中,通过盐田蒸发精准调控卤水组成,使钾分别以氯化钾与光卤石等析出,含钾矿物用于钾产品加工;锂富集在提钾后的卤水中,根据浓缩卤水镁锂比高的特点,采用膜分离技术实现镁锂分离后送入加工工序;在加工工艺中把富锂卤水经过精制和转化等得到碳酸锂产品。本技术已应用在五矿盐湖有限公司10kt/a Li2CO3 项目,工程所在地为柴达木盆地一里坪盐湖,工程规模为10kt/a Li2CO3,项目运行平稳。通过该项目的实施,开发了一里坪盐湖的锂资源,把资源转化为经
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希望在技术转移过程中得到的帮助/支持
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商业应用单位联系人/电话/邮箱
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设备投资工程规模:25kt/a Li2CO3 经测算,本技术进行新建工程所必须的主要设备及其他附属设备一次投入的投资金额为51086.87k$(USD)。
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年运行维护费用系统正常运行时单位产品耗费的原、辅材料费用为1897.96$,燃料费用为699.78$,人工费(工资)44.80$、设备折旧费186.72$、修理费135.74$、管理费41.43$等维护费用。
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投资回收期静态投资回收期为投资项目收回原始总投资所需要的时间,即以投资项目经营净现金流量抵偿原始总投资所需要的全部时间,本项目建设期2年。 不包括建设期的回收期=原始总投资/投产后若干年相等的净现金流量=4.03年 综上本项目静态投资回收期(含建设期)为6.03年。本项目技术尚未实施,目前没有典型案例。
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附加效益项目为新建年产25kt碳酸锂(工业级)装置,以市场价格5538.46$/t计,新增产值138461.5k$/a。
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综合效益本技术的盐田工艺中,卤水浓缩约20.8倍,成卤率为4.8%左右,卤水中锂的收率为88.7%,提高卤水锂的利用率从而节约资源;车间加工工艺中锂的总收率为89%,产品为工业级碳酸锂;卤水精制过程中产生的含镁化合物可用作其他产品,提锂后的卤水可继续用于盐田晒制钾石盐,因此本技术没有污染物排放,绿色加工工艺,从而利于生态环境保护。
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障碍对技术转移影响等级0
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提交日期2020/12/25
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技术成熟度本技术针对南美富锂钾卤水中锂钾资源的综合利用,分别以氯化钾和碳酸锂为预期产品,结合资源地的能源资源条件,提出预期产品的技术方案,通过实验室小实验验证了技术方案的可行性,基本确定工艺路线及较优化参数,工艺及产品指标满足总体要求。 由于盐湖富锂卤水生产碳酸锂的工艺均是立足于盐湖锂资源的特点及实际情况而设计的,不同的盐湖生产碳酸锂有各自的工艺特点,本技术主要应用于低镁锂比盐湖,对“一带一路”类似盐湖锂资源的开发具有普适性。 本技术的工艺包括盐田工艺与车间加工工艺两部分,盐田工艺是利用自然能进行相分离的技术,已在盐湖资源开发中得到普遍应用;车间加工工艺包括卤水精制与转化等,已在盐湖锂资源提取方面得到广泛应用,因此本技术的工艺路线系统完善。同时工艺所涉及的设备及系统集成的完善程度较高。
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Technical adaptability analysisThe process aims at comprehensive development of lithium and potassium resources from lithium-potassium-rich salt lake brine. It is suitable for the development of lithium resource from the brine in which Mg/Li ratio 1-10 and the content of lithium no less than 600 mg/L. For the process, salt field process depends on the rich solar energy and wind energy resource in the mineral area to concentrate the brine. Thereof consumption of other energy source is reduced. Therefore these natural conditions such as dry climate, windy, less rain, evaporation large, long sunshine duration, et al. are necessary. Meanwhile site and geological conditions for construction of salt fields are required, too. In the manufacture factory, the processing technology includes brine refinement and conversion, et al. Therefore, basic conditions such as communication conditions, power supply, water supply and heating, et al. for the construction of the factory and normal production are required.
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Technical stability analysisDuring the operation of salt field process, summer is main evaporation time. In winter its evaporation capacity is decreased slightly. By accurate regulation, it can be operated continuously and steadily. The impact of surroundings on the process can be reduced. In the manufacture factory, all processes are closely linked. The process parameters can be kept stably. Thereof the whole process can be steadily operated. It is insensitive to surroundings.
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Technical safety analysisThere is no secondary pollution in the course of the process implementation. Materials such as combustibles, explosives, poisons are not used. Therefore there is no risk of environmental and safety accidents such as leakage of these materials. It is suitable for comprehensive development of lithium and potassium resources from salt lakes brines. It is a green process. Chemical materials used are easily purchased. There is no risk of limitation from upstream resources. It is simple and strong operability. There is no special requirement for equipments involved. There is no systematic risk of low market acceptance.
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技术转移推广障碍0
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知识产权转让拥有国内自主知识产权,知识产权归属于中国科学院青海盐湖研究所,中国科学院青海盐湖研究所隶属于中国科学院,是国家科研机构。本技术可进行转让,技术转让机制与政策途径顺畅。