LIFTER FOR ROTARY HEAT EXCHANGER, ROTARY HEAT EXCHANGER WITH THE LIFTER, AND HEAT TREATMENT METHOD FOR NICKEL OXIDE ORE

摘要

[PROBLEMS] A rotary heat exchanger increasing the degree of contact of the entire raw material with heat gas, enabling to achieve a high exchange rate of heat with the gas even the raw material has a high percentage of water content. [MEANS FOR SOLVING PROBLEMS] A lifter (7) in which an inner cell (12) and outer cells (13) are formed at a section in a part in the longitudinal direction of a circular tube-like shell (4) is provided. The inner cell (12) has, on the raw material loading side, an opening having the size 1/6 or more of the inner diameter of the circular tube-like shell (4) and is concentric with the shell. The outer cells (13) are formed by circumferentially partitioning an outer peripheral space of the inner cell by radial plates (11). A ring plate (10) defining the inner cell (12) is constructed from a panel with holes screening a part of raw material in each outer cell (13) into the inner cell (12). The radial plates (11) defining the outer cells (13) are also constructed from a panel with holes for screening a part of the raw material in each outer cell (13) into adjacent outer cells (13).