A kind of powdery manganese oxide ore fluidization low-temperature reduction method

A kind of powdery manganese oxide ore fluidization low-temperature reduction method

  • CN 102,363,837 B
  • Filed: 11/14/2011
  • Issued: 11/18/2015
  • Est. Priority Date: 11/14/2011
  • Status: Active Grant
First Claim
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1. a powdery manganese oxide ore fluidization low-temperature reduction method, enters preheating unit by powdery manganese oxide ore through feed unit and carries out preheating, then enters the reduction of reducing roasting unit and changes into manganese monoxide ore deposit, finally by discharging after cooling unit cooling;

  • The tail gas that described reduction process produces enters in combustion chamber (9), forms flue gas with supplementary coal gas, air combustion;

    Described flue gas is successively by secondary cyclone preheater (4), one cyclonic preheater (3) and powdery manganese oxide ore countercurrent flow;

    Described reducing roasting unit internal oxidition manganese ore is in bubbling fluidization state, and reduction temperature is 500 ~ 600 DEG C, and the recovery time is 10 ~ 20min;

    Described powdery manganese oxide ore through pre-treatment by size controlling at 60 ~ 400 orders.

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