Page 38 - Technology Compendium
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CSIR-IMMT/EXM - 09
Recovery of tungsten from secondaries
Advantages / Salient Technical Features Application/Uses
• Secondaries such as tungsten alloy scrap, tungsten • Defence, High temperature resistant alloys,
spent catalyst and tailings can be processed to Steel, Light bulb, Electronics, Machinery, etc.
recover W using this technology
• High pure tungsten powders at 99.9% purity and Scale of Development
CQAM-58 specifications for Military Applications • Pilot scale testing. (Current TRL Level : 06)
Problem being addressed Commercialization Status
• India has no primary resource for tungsten production. • Technology delivered to DMRL (DRDO)
• Tungsten is strategically important for defence and
industrial purposes. Techno-economics
• Utilization of secondary resources such as scrap will • Recycling of majority of the chemicals
fulfil AtmaNirbhar Bharat • Low quantity of make-up chemicals.
• Low operation cost
Environmental Considerations (if any) • High demand for high-pure 99.9% tungsten
• Environmentally benign processes metal powders in the market - economically
profitable.
Major Raw Materials to be Utilized
• Alloy scrap, spent catalysts or tailings. Sodium Technology Package
Chloride, Sodium Carbonate Hydrochloric acid - • Process know-how, Basic Engineering
major chemicals required for processing. Package
IPR Status / Details (India/Abroad)
• NA
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