Page 50 - Technology Compendium
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CSIR-IMMT/MAT - 10
Metal recovery from Ferrochrome (FeCr) slag en route to zero waste
Advantages / Salient Technical Features Application/Uses
• Metal values recovered in the form of HCFeCr • HCFeCr alloy can be used for steelmaking
(~60%Cr), complete utilization of FeCr slag along with and innocuous slag can be used for (a) build-
minimization of Cr +6 ing material application, (b) refractory appli-
cations
Problem being addressed
• Utilization of hazardous waste Scale of Development
• Minimization in loss of metal values • Technology demonstration. (Current TRL
• Minimization in Cr leaching Level : 03)
+6
Environmental Considerations (if any) Commercialization Status
• FeCr slag is an environmentally hazardous waste due • Yet to be commercialised
to presence of Cr+6, its effective processing not only
assists in recovery of non-renewable metallic values Techno-economics
but also takes care of Cr+6 leaching such that it is • Techno-economic feasibility will be carried
within the solid waste disposal limit. out after pilot scale study
Major Raw Materials / Plant Equipment / Machinery Technology Package
• FeCr slag • Development of technical flow sheet
IPR Status / Details (India/Abroad)
• Process knowhow; No patent yet
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