A kind of manganese oxide ore fluidized reduction device and method
A manganese oxide ore, fluidized technology, applied in the field of chemical metallurgy, can solve the problems of complex structure of the fluidized bed reduction furnace, unexplained utilization of the reduction tail gas gas composition, unfavorable heat exchange, etc., so as to save equipment costs and reduce energy consumption. , the effect of improving cooling efficiency
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Embodiment 1
[0079] This embodiment provides a fluidized reduction device for manganese oxide ore, and the schematic structural diagram of the device is as follows: figure 1 As shown, it includes a reduction roasting unit, a combustion unit and a fluidized cooling unit; the fluidized cooling unit includes an indirect fluidized cooler 5; the indirect fluidized cooler 5 is provided with a heat pipe;
[0080] The solid outlet of the reduction roasting unit is connected to the heat source inlet of the indirect fluidized cooler 5, and the indirect fluidized cooler 5 is provided with a fluidization gas inlet and a fluidization gas outlet. The reduction roasting unit The gas outlet is connected to the inlet of the combustion unit.
[0081] The reduction roasting unit includes a fluidized reduction furnace 1; a first gas-solid separator 1-1 is arranged between the reduction roasting unit and the combustion unit, and the gas outlet of the reduction roasting unit is connected to the first gas-solid ...
Embodiment 2
[0092] This embodiment provides a fluidized reduction device for manganese oxide ore. The device includes a reduction roasting unit, a combustion unit, and a fluidized cooling unit; the fluidized cooling unit includes an indirect fluidized cooler 5; The indirect fluidized cooler 5 is provided with a heat pipe;
[0093]The solid outlet of the reduction roasting unit is connected to the heat source inlet of the indirect fluidized cooler 5, and the indirect fluidized cooler 5 is provided with a fluidization gas inlet and a fluidization gas outlet. The reduction roasting unit The gas outlet is connected to the inlet of the combustion unit.
[0094] The reduction roasting unit includes a fluidized reduction furnace 1; a first gas-solid separator 1-1 is arranged between the reduction roasting unit and the combustion unit, and the gas outlet of the reduction roasting unit is connected to the first gas-solid separator 1 -1 is connected to the inlet, and the gas outlet of the first ga...
Embodiment 3
[0102] The present embodiment provides a method for the fluidized reduction of manganese oxide ore. The method is carried out by using the device in Embodiment 1, and includes the following steps:
[0103] (1) The manganese oxide ore raw material with a total manganese grade of 35wt% is ground, and the fineness reaches 100 mesh and the sieve residue is less than 20%. After grinding, it is fed into the raw material preheater 3. After preheating, it enters the fluidized reduction furnace. In 1, a fluidized reduction reaction occurs with coal gas, the reaction temperature is 700 ° C, and the reaction time is 20 minutes. The solid product after the reaction enters the indirect fluidized cooler 5, and conducts direct heat exchange with the fluidizing gas and indirect heat with air. heat exchange, the fluidizing gas is coal gas; the temperature of the solid product after heat exchange is reduced to 100 ° C to obtain a manganese oxide product; the air temperature after heat exchange i...
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