A multi-layered continuous water treatment device

CN224691877UActive Publication Date: 2026-08-28XINING YONGZHENG LITHIUM IND CO LTD
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Patent Information

Application Number
CN202521665081.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-06
Publication Date
2026-08-28
Estimated Expiration
2035-08-06

AI Technical Summary

Technical Problem

[0004]该带滤机的锂收率虽能达到70%以上、锂洗脱液中锂浓度可达0.5g/L，但在固液分离区滤过滤布的卤水（即吸附段出水）中仍含有不少锂未被充分收集；现有技术中会将吸附段出水再次喷淋到固液分离区的吸附剂上，以利用吸附剂进行二次吸附，但此时吸附剂的吸附容量已趋于饱和，对锂的二次吸附效率十分有限

Benefits of technology

[0055]（1）本实用新型将至少两台带滤机串联起来以对卤水连续作至少两次处理，由于下游带滤机上的吸附剂在上游带滤机上时已完成解吸，因此有效吸附容量充足，能够充分回收吸附段出水中的锂（锂吸附率达97%以上）；而与采用淡水作为洗盐液相比，采用上游带滤机的洗盐段出水作为下游带滤机的洗盐液不仅节约淡水用量，而且能够带走更多的杂质离子（即吸附剂上吸附的除锂之外的盐离子），减少洗盐过程中的锂损失（锂损失率小于3%）；同样地，直接以来自上游带滤机的解吸段出水作为下游带滤机的解吸液不仅能大大减少解吸液（即淡水）用量，而且能够确保锂解吸效率，提升锂洗脱液的锂浓度。采用本实用新型的多层连续水处理装置获得的锂洗脱液不仅回收率可达94%，而且锂浓度可达0.75 g/L，盐锂比仍能控制在10:1以下，可大幅度减少后续膜浓缩段的成本投入。

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Abstract

The utility model discloses a kind of multilayer continuous water treatment devices, the device includes at least two belt filters to implement continuous at least twice processing to brine on different horizontal heights, two adjacent belt filters are respectively: upstream belt filter, the upstream belt filter is used to first process brine and through conveying component respectively with adsorption section effluent, salt washing section effluent and desorption section effluent are conveyed to downstream belt filter;Downstream belt filter, the downstream belt filter receives adsorbent from the filter cloth tail end of upstream belt filter with its filter cloth head end, and using adsorbent from upstream belt filter, salt washing section effluent and desorption section effluent to second process adsorption section effluent from upstream belt filter.The device not only has high lithium adsorption rate and high salt washing efficiency, but also can make full use of vertical space, and each belt filter can be arranged in any direction according to terrain, and has high mobility.
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Citation Information

Patent Citations

  • Filter press and its application in lithium extraction from brine by adsorption method

    CN111825152B