Patent ID: 11890610
Assignee: TITAN KOGYO KABUSHIKI KAISHA
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  G | IPC B  C  G

Claim 4:
5. The method according to claim 4, comprising steps of:
(1) mixing a titanium source and a potassium source,
(2) firing the resulting mixture to obtain potassium dititanate,
(3) contacting potassium dititanate with water for hydration and cation exchange between potassium ions and protons,
(4) wet pulverizing the resulting potassium hydrogen dititanate hydrate (K2-xHxO.2TiO2.nH2O wherein x is 0.5 or more and 1.3 or less, and n is greater than 0) in a slurry,
(5) subjecting the slurry to solid-liquid separation to separate a filtered cake comprising potassium hydrogen dititanate hydrate from the slurry,
(6) granulating the filtered cake into particles of potassium hydrogen dititanate hydrate without using a binder,
(7) drying potassium hydrogen dititanate hydrate at a temperature of 60° C. or higher and 150° C. or lower for 1 hour or longer and 24 hours or shorter, and
(8) cracking and sizing the dried potassium hydrogen dititanate hydrate to obtain a particulate cobalt ion adsorbent having a particle size range of 150 μm or more and 1000 μm or less.