Reaction apparatus and method
AssigneesPosco Holdings Inc., Research Institute of Industrial Science & Technology
InventorKi-Sung You
Life of this patent
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Abstract
Provided are an apparatus and a method for reaction for use in a co-precipitation reaction for preparing a catalyst or a cathode active material for a lithium secondary battery, which injects a raw material (a solution) at least between impellers according to the solution level in a vessel, thereby making a stirring speed uniform and, in particular, minimizing a concentration difference between solutions. The apparatus for the reaction may comprise: a reaction vessel; a stirring means provided inside the reaction vessel and having multistage impellers; and a raw material injecting means, comprising at least one injection nozzle connected to the reaction vessel, for injecting a raw material at least between impellers.
Claims17
A reaction apparatus, comprising:
- a reaction vessel;
- a stirring means provided inside the reaction vessel and having multistage impellers;
- and
- a raw material-injecting means connected to the reaction vessel and comprising at least one injection nozzle injecting a raw material into an interspace between the impellers,
- wherein the raw material comprises a metal solution,
- the raw material-injecting means comprises a first raw material-injecting means injecting the metal solution at least into the interspace between the impellers, and in connection with a metal solution-mixing means disposed outside of the reaction vessel,
- the metal solution-mixing means mixes a pre-determined ratio of a shell solution and a core solution of the metal solution to supply,
- the raw material further comprises first and second solutions and the reaction apparatus is provided as a coprecipitation reaction apparatus for preparing a cathode active material for a lithium secondary battery, and
- the raw material-injecting means further comprises second and third raw material injecting means involving injecting the first and second solutions into the interspace between the impellers.
Dependencies are inferred from the claim text.