Projects : Secondaries & Resources Utilization Group
Development of grinding aid for improving productivity of cement mill and development of performance improver to improve cement quality
Sponsor: SHREE CEMENT LIMITED, KOLKATA
Objectives:
- To develop a customized grinding aid suitable for the cement clinker by which the productivity of grinding mill should improve and consequently the energy consumption/ton of grinding cement should be reduced.
- To develop a customized performance enhancer suitable for the cement clinker of SCL by which the water demand (w/c ratio) of cement is reduced and consequently the compressive strength of cement is increased.
Achievements/Outcome:
A grinding aid, which is cheap, and can improve the grinding efficiency without any deterioration in final product quality.
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Technology development for geopolymer cement
Sponsor: TATA POWER
Objectives:
- To establish proof of concept at lab scale and up-scale to pilot plat for making geopolymer cement from fly ash.
- To prepare 20 tons of geopolymer cement, assist Tata Power Co Ltd to make a demonstration road using this cement and prepare a DPR for the production.
Achievements/Outcome:
- A DPR for the production of 50 tons/day capacity geopolymer cement plant.
- Technology demonstration by producing 20 tons cement and making a demonstration road.
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Upscaling (to 10 tpd) of Red mud Containing Geopolymer Paving Blocks
Sponsor: Department of Science and Technology, GOI.
Objectives:
- Upscale the lab scale process (developed at CSIR-National Metallurgical Laboratory, Jamshedpur) of making paving blocks (IS 15658 specification) from geopolymerisation of red mud along with fly ash to 10 ton/day.
- On field study of long term properties e.g. durability, longevity.
- Customization of the process to make geopolymer based hollow bricks.
Achievements Envisaged:
- Process demonstration of pavers at 10 tpd scale.
- 100 ton of paving blocks and 5 ton of hollow bricks.
- Life cycle analysis of paver process (Cradle to Gate).
- DPR preparation for 100 tpd paver plant.
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To find out suitable applications of various derivatives of LD slag
Sponsor: TATA STEEL
Objectives:
- Use of processed LD slag to develop porous material for heat and sound insulation panels.
- Use of processed LD slag to develop fiber reinforced composite material.
- Use of processed LD slag as white cement component.
Achievements:
- Process for (a) porous blocks by geopolymerisation, (b) tiles by geopolymerisation, and (c) quick setting grout from HPPI slag has been developed.
- Use of HPPI slag as filler in paint has been established.
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Development and transfer of process/know-how on red mud containing geopolymer paving blocks
Sponsor: HINDALCO INDUSTRIES
Objectives:
- Evaluation of Hindalco red mud for geopolymer pavers.
- Technology transfer to Hindalco Customization of the process to make geopolymer based hollow bricks.
Achievements Envisaged:
10 ton of red mud based geopolymer as product conforming to IS 15658
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Recovery of Vanadium from Spent Sulfuric Acid Catalysts
Sponsor: HINDUSTAN ZINC LIMITED, UDAIPUR
Objectives: Develop an innovative hybrid hydrometallurgical process to extract min. 98% pure vanadium as vanadium pentaoxide from contact process based spent catalysts.
Achievements : >98.6% pure vanadium as Ammonium Metavanadate and V2O5 achieved on bench scale. Large Scale validation ongoing.
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Studies on smelting of manganese ore in electric arc furnace
Sponsor: TATA STEEL
Objectives: To optimize the process variables in the production of low carbon (LC) Silico-manganese by smelting of manganese ore in EAF
Achievements:
- Optimized charge composition and smelting time essential to produce the silicomanganese alloy of a particular composition i.e LC Si-Mn with C<0.5%.
- The produced silicomanganese is useful for the production of special alloy steel wherever low carbon is required while alloy with manganese or silicon.
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Smelting studies on ferro-chrome slag
Sponsor: TATA STEEL
Objectives: To study the smelting of ferrochrome slag in electric arc furnace to remove silica by carbothermic reduction.
Achievements Envisaged:
- Useful to develop a technology for large scale processing of ferrochrome slag for utilization in the form of refractory materials.
