CM-PATRA / record

System and method for producing magnetite from red mud using two stage reactors

Publication

WO-2021214784-A1 on Google Patents

Filed / published / granted

2021-04-19 / 2021-10-28 / n/a

Offices

WO

Applicants

IIT Madras (IN, academic)

Minerals

Aluminium (not on list)

Stages

Compounds and materials

Waste stream

Red mud (bauxite residue)

CPC

C01G49/08, C01P2006/80, C01P2002/72, Y02P20/10, Y02P20/129

Abstract (first 170 chars)

Disclosed are systems and methods to produce magnetite from red mud using two-stage reactors (102-N). Each two-stage reactor (102-N) includes a lower section (104) and an upper section (106), which includes an electric furnace (110). The reactor (102-N) includes a first stage (112) and a second stage (114) for processing red mud and coal particles separately. The reactors (102-N) are configured to operate in a charging mode, pre-heating mode, reaction mode, and discharging mode sequentially with a predetermined time lag. The reactors (102-N) are connected serially to allow transfer of pre-heat