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Dolachar
Dolachar is a waste product formed in sponge iron (Direct Reduced Iron – DRI) units. It is formed while burning coal and has residual carbon, ash, and other impurities in it. Dolachar is an industrial waste but is reused in many industries because of the residual carbon it contains.
Applications of Dolachar
• Fuel for Brick Kilns & Cement Plants: Because of the residual carbon in it, dolachar finds application as low-grade fuel.
• Road Construction: Combined with other materials to enhance road strength.
• Land Filling: Applied in mines and construction areas for land reclamation.
• Blending with Coal: Sometimes blended with high-quality coal to optimize fuel cost.
Dolachar is primarily manufactured in sponge iron units where iron ore is directly reduced by coal. It is usually regarded as waste, but its use in various industries contributes to minimizing environmental effects.
Dolachar Specifications
| Chemical Parameter | Result | Unit |
|---|---|---|
| GCV | 2000-2500 | Kcal/ Kg. |
| Carbon | 14-18 | % |
| Hydrogen | 3-5 | % |
| Nitrogen | >1 | % |
| Sulphur | 1-1.5 | % |
| Moisture | 1-3 | % |
| Ash | 40-45 | % |
Conclusion
Dolachar, which is a waste product of sponge iron production, was previously a waste material but is now a precious resource for power generation, cement, and road construction industries. Not only does its use decrease industrial waste, but it also helps save costs and make the environment sustainable. By utilizing Dolachar, industries are able to save energy and reduce their carbon footprint.
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