Wastes Utilization

• Utilization of industrial wastes such as fly ash from thermal power plants and granulated blast furnace slag from iron and steel industries in the manufacture of Portland Pozzolan Cement (PPC) and Portland Slag Cement (PSC)
• Enhancing the fly ash content in PPC by adopting activation of fly ash through different routes.
• Use of low grade materials and mine rejects in development of synthetic slag having properties comparable to granulated blast furnace slag conforming to IS:12089-1987
• Utilization of industrial by-products such as lead-zinc slag, copper slag, LD slag etc from metallurgical industries, spent pot lining (SPL) waste from alumina industry, jarosite from zinc industry, barium sludge from chemical industry as raw material/ mineralizer in the manufacture of OPC.
• Use of “jarosite”, a by-product of zinc industry as partial substitute of conventional mineral gypsum in controlling cement setting.
• Study on the utilization of different types of slags generated at non-ferrous metallurgical industries such as lead-zinc slag, copper slag, LD slag, E-cat, a waste generated at petroleum refinery and marble dust from marble processing industries as mineral additive and blending component in the manufacture of cement.
• Development of kiln furniture and pottery wares by using catalytic waste generated at petroleum refinery.
• Developmental studies on plaster coating, tiles, bricks, blocks etc using industrial wastes such as marble slurry, fly ash, red mud etc.

Achievements

• Relative increase in fly ash utilization level up to 8% in PPC manufacture and 85% in brick manufacture
• Lead-Zinc slag utilization up to 6% as raw mix component and 5% as performance improver in OPC
• Copper slag utilization up to 2.5% as raw mix component and 5% as performance improver in OPC
• Steel slag utilization up to 2% as raw mix component and 5% as performance improver in OPC
• Spent Pot Lining (SPL) waste utilization up to 1.5% as raw mix component
• Red mud utilization up to 4% as raw mix component
• E-cat from petroleum refinery utilization up to 10% in the manufacture of blended cement
• Marble dust from marble industry utilization up to 5-15% as raw mix component
• Soda Ash sludge from Soda Ash industry utilization up to 6 to 25% as raw mix component
• Lime sludges from different industries utilization up to 25 to 70% as raw mix component
• Jarosite utilization up to 1.5% as raw mix component and also as partial substitute of mineral gypsum in controlling cement setting
• Synthetic gypsum from marble waste