Page 17 - Annual Report_21-22

A reduction roasting study has been carried out using as from the red mud with Fe content more than 62% in the
received red mud sample after the air drying is done. The concentrate with a yield of 20 to 25% depending on the
process flow diagram is shown in below figure. feed characterstics and operating conditions from a feed
Reduction roasting study has been carried out using as received red mud sample after the air
The results indicate it is possible to recover the iron values Fe content of around 35%.
drying is done. The process flow diagram is shown in below figure 1.

As Received Red
Mud Sample

The red mud sample was air dried
and appropriate size classification
was done Or micro pellet was
prepared

The prepared sample was mixed
Non-coking Coal
with coal in appropriate proportion

Reduction roasting in laboratory
muffle furnace

Magnetic separation Non-Mag. Tailing

Magnetic
Concentrate Product

Fig- Process flow diagram of the reduction roasting process for iron recovery
Figure 1: Process flow diagram of the reduction roasting process for iron recovery
The results indicate it is possible to recover the iron values from the red mud with Fe content
more than 62% in the concentrate with a yield of 20 to 25% depending on the feed
characterises and operating conditions from a feed Fe content of around 35%.

Beneficiation study for recovery of manganese value from mixed manganese metal
waste generated at FAP Joda
Sponsored by: M/s. Tata Steel Limited

Ferro-manganese plant generates number of solid wastes. The mixed metal-slag is one such
waste generated in the plant. After removal of pure metal and pure slag there exists a mixture
of slag and metal at the slag-metal interface. These mixed metal-slag need to be processed for
recovering the manganese metal values. The mixed metal-slag contains substantial amount of
manganese values in it. There is a huge potential to recover these values for value addition
and ultimately improving the productivity of the plant. M/s. Tata Steel Limited is interested
ANNUAL REPORT 2021-22 15
in recovering manganese values from the slag using beneficiation methods.