Manganese sulfate solution manufacturing method

The use of a specific zeolite structure with a silica-to-alumina ratio of 6 or more and an 8-membered oxygen ring effectively removes potassium from acidic manganese sulfate solutions, addressing the limitations of existing methods by ensuring stability and reducing environmental impact while producing high-purity manganese sulfate.

JP7803445B2Active Publication Date: 2026-01-21TOSOH CORP
10 Cites 0 Cited by

Patent Information

Application Number
JP2025005910
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2023-06-12
Filing Date
2025-01-16
Publication Date
2026-01-21
Estimated Expiration
2044-06-10

AI Technical Summary

Technical Problem

Existing methods for removing potassium from acidic manganese sulfate solutions, such as the jarosite process and manganese dioxide-based adsorbents, face challenges like high chemical consumption, equipment costs, environmental impact, and instability in acidic environments, making them unsuitable for industrial scalability.

Method used

A method using a zeolite with a silica-to-alumina molar ratio of 6 or more and containing an 8-membered oxygen ring in its framework is employed to selectively adsorb potassium from acidic manganese sulfate solutions, avoiding the formation of jarosite and maintaining stability in acidic conditions.

Benefits of technology

This approach enables efficient and stable potassium removal from manganese sulfate solutions, reducing environmental burden and operational costs, allowing for the production of high-purity manganese sulfate suitable for industrial applications.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

To provide at least one of an industrially applicable manufacturing method of a manganese sulfate solution, that does not generate jarosite and comprises a step of selectively removing potassium from a sulfuric acid acidic manganese solution; and a manufacturing method of manganese oxide using the manganese sulfate solution.SOLUTION: A manufacturing method of a manganese sulfate solution comprises a step of adsorbing a potassium ion on a zeolite by making a molar ratio of silica to alumina be 6 or more, and bringing the manganese sulfate solution containing the potassium ion into contact with the zeolite containing an oxygen 8-membered ring in a skeletal structure.SELECTED DRAWING: None
Need to check novelty before this filing date? Find Prior Art