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- Dariba smelting complex
Self-sufficient operations powered by nearby mines
Commissioned in 2010, Dariba Smelting Complex integrates zinc and lead production, leveraging nearby Rajpura Dariba and Sindesar Khurd mines and optimising resource utilisation across multiple metallurgical processes.
Location
Rajsamand, Rajasthan
Metal capacities
Zinc 250 KT | Lead 120 KT annually
Products
Special High-Grade Zinc (HG), Lead
Power
Dariba Smelter supports our integrated zinc operations by supplying surplus calcine to other hydrometallurgical smelters, supporting local industrial growth while optimising by-product utilisation.
Operational excellence through advanced technologies
Roast–Leach–Electrowinning (RLE)
Proven hydro-metallurgical zinc refining producing ultra-pure zinc.
SKS smelt reduction electro-refining
Bottom-blowing lead smelting process for high-quality lead cathodes.
Integrated slag utilisation
Blast furnace slag is processed to produce zinc oxide, with residual slag supplied to cement plants.
The making of every ingot
A hydrometallurgical process that transforms zinc concentrate into ultra-pure zinc through oxidation, leaching, and electrolysis.
Oxidises zinc concentrate; gases sent to acid plant.
Calcine is dissolved to form a zinc sulphate solution.
Removes impurities via cold and hot purification.
Yields high-purity zinc cathodes from zinc solution.
Molten zinc is cast into solid ingots.
Smelts lead concentrate using bottom-blowing oxygen, producing bullion that is refined into pure lead cathodes.
Oxidises zinc concentrate; gases sent to acid plant.
Calcine is dissolved to form a zinc sulphate solution.
Removes impurities via cold and hot purification.
Yields high-purity zinc cathodes from zinc solution.
Molten zinc is cast into solid ingots.
Oxidises zinc concentrate; gases sent to acid plant.
Calcine is dissolved to form a zinc sulphate solution.
Removes impurities via cold and hot purification.
Yields high-purity zinc cathodes from zinc solution.
