Potassium extraction precursor material and preparation method and comprehensive utilization method thereof

Potassium precursor materials were prepared by solvation reaction and crystal phase recombination technology, which solved the problem of resource waste in mixed salt solid waste, realized the efficient extraction and recycling of potassium resources, reduced energy consumption, reduced environmental pollution, and is applicable to a variety of complex systems.

CN121915262APending Publication Date: 2026-04-24湖北零熵资源循环合伙企业(有限合伙)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
湖北零熵资源循环合伙企业(有限合伙)
Filing Date
2026-01-21
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Existing technologies for treating mixed salt solid waste present problems such as soil occupation, marine pollution, and resource waste, especially the lack of economical and efficient means to recover high-value potassium.

Method used

Potassium precursor materials are prepared through solvation reaction and crystal phase recombination technology, including steps such as solvation reaction, low acid leaching, mechanochemical high-energy ball milling and pressure leaching. Combined with the reaction of potassium-containing solution, selective extraction and recycling of potassium resources can be achieved.

Benefits of technology

It enables efficient extraction of potassium resources and conversion into high-value potassium sulfate products, reduces soil erosion and marine pollution, lowers energy consumption, improves the comprehensive utilization of resources, is applicable to a variety of complex systems, and conforms to the principles of green chemistry.

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Abstract

The invention discloses a potassium extraction precursor material as well as a preparation method and a comprehensive utilization method thereof, and belongs to the technical field of resource recycling. The preparation method of the potassium extraction precursor material comprises the following steps: carrying out solvation reaction on a potassium-containing mixed mineral raw material to obtain a first potassium-rich crystal; and slurrying the first potassium-rich crystal, and performing crystal phase recombination to obtain a potassium extraction precursor and a potassium sulfate solution. Reacting the potassium extraction precursor with a potassium-containing solution to obtain a second potassium-rich crystal; the second potassium-rich crystal is returned to the crystal phase recombination step for cyclic utilization, efficient selective extraction of potassium resources in industrial waste salt and complex potassium-containing solutions can be achieved, waste is converted into a high-value potassium sulfate product, and the comprehensive utilization level of the resources is greatly improved. In the crystalline phase recombination process, potassium in high-potassium crystals can be dissolved out, the crystal structure is reserved, rich potassium adsorption sites are constructed, the potassium extraction cycle performance is remarkable, the whole technological process is short, operation conditions are mild, and near-zero emission of waste water and waste residues can be basically achieved.
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