CM-PATRACritical Minerals Patent and Technology Research Analytics
CM-PATRA / waste streams
Critical minerals from waste streams
Which wastes Indian patents, funded projects and recent filings try to recover critical minerals from. It is a keyword view over the same dataset, not a new source. Data as of 2026-10-16.
How a record is tagged
A record is tagged with a waste stream when its English title or abstract contains one of the listed phrases. 'Other industrial waste' applies only when no named stream matched. Records with no English text are never tagged, so counts are floors.
This view counts technology and projects, not the waste itself. Published element grades for Indian waste streams are rare, so CM-PATRA does not estimate how much metal any waste holds.
By waste stream
| Waste stream | Patent families | Indian applicant | R&D projects | Journal filings | India-list minerals named |
|---|---|---|---|---|---|
| Slag, dross and smelter residues | 21 | 19 | 13 | 0 | Copper (5), Titanium (3), Selenium / Tellurium (3), Tin (3) |
| Red mud (bauxite residue) | 10 | 8 | 15 | 1 | Titanium (5), Rare earths (4), Copper (1) |
| Spent batteries and black mass | 13 | 13 | 8 | 3 | Lithium (20), Nickel (4), Cobalt (3), Graphite (3) |
| E-waste and electronic scrap | 8 | 8 | 7 | 0 | Copper (5), Rare earths (5), Nickel (2), Tin (2) |
| Spent catalysts | 12 | 11 | 2 | 0 | Platinum-group metals (6), Nickel (5), Silicon (3), Vanadium (3) |
| Coal fly ash and coal rejects | 5 | 5 | 6 | 0 | Silicon (3), Rare earths (1) |
| Mine tailings and dumps | 1 | 1 | 7 | 1 | Silicon (1), Nickel (1) |
| Other industrial waste | 3 | 3 | 4 | 0 | Titanium (2), Gallium / Germanium / Indium (1), Rare earths (1) |
| Magnet scrap | 1 | 1 | 2 | 0 | Rare earths (2), Nickel (1) |
| Phosphogypsum | 1 | 1 | 0 | 0 | Rare earths (1), Potash / Strontium / Phosphate (1) |
Slag, dross and smelter residues
Matched words: slag, dross, flue dust, anode slime, smelter residue, leach residue.
R&D projects (SATYABHAMA and JNARDDC)
- Setting Up of 1 TPD Pilot Plant for the Recovery of Salt from Waste Aluminum Dross · SNTMOM/1445/2025 (also JNARDDC S-61) · Approved without Modification · S&T(Mines) & Industry : Alumicopper Private Limited
- Recovery of Nb2O5 and Ta2O5 from tin ore or slag through a Fluoride-free process · SNTMOM/1403/2024 · Approved with Modification
- Recovery of Selenium, Tellurium and Copper from Processed Anode Slimes Cake of copper refineries · SNTMOM/1353/2024 · Approved with Modification
- Candidate related patent: Hydrometallurgical process for the recovery of tellurium from high lead bearing copper refinery anode slime (mineral: Copper, Selenium / Tellurium; waste stream: Slag, dross and smelter residues; title words: anode, slime, refinery)
- Candidate related patent: A process for recovery of iron from copper slag (mineral: Copper; waste stream: Slag, dross and smelter residues)
- Triazine Derived g-C3N4 Based Separation of Niobium and Tantalum from the Tin Slag- A Fully Scalable Fluoride-Free Process. · SNTMOM/1167/2024 (also JNARDDC S-56) · Approved with Modification · Banaras Hindu University, Varanasi, JNARDDC-, BHU & Industry : LOHUM, Greater Noida
- Utilisation of aluminium dross in synthetic slag preparation for secondary steel making · SNTMOM/1093/2024 (also JNARDDC S-50) · Approved with Modification
- White Hydrogen from scrap aluminum dross transforming industrial waste into a fuel source for the future · SNTMOM/1001/2023 · Approved with Modification
- An optimal approach for the retrieval of value-added substances from secondary aluminum black dross · SNTMOM/991/2023 (also JNARDDC S-49) · Approved with Modification
- Enhanced selective recovery of selenium and tellurium from copper anode slime using secondary mineral waste · SNTMOM/970/2023 · Approved with Modification
- Candidate related patent: Hydrometallurgical process for the recovery of tellurium from high lead bearing copper refinery anode slime (mineral: Copper, Selenium / Tellurium; waste stream: Slag, dross and smelter residues; title words: anode, slime)
- Candidate related patent: A process for recovery of iron from copper slag (mineral: Copper; waste stream: Slag, dross and smelter residues)
- Recovery of metallic values from the discarded copper slag · SNTMOM/564/2021 · Approved with Modification
- Candidate related patent: A process for recovery of iron from copper slag (mineral: Copper; waste stream: Slag, dross and smelter residues)
- Candidate related patent: Hydrometallurgical process for the recovery of tellurium from high lead bearing copper refinery anode slime (mineral: Copper; waste stream: Slag, dross and smelter residues)
- DEVELOPMENT OF NOVEL HYDROMETALLURGICAL TECHNOLOGICAL PROCESS PACKAGE FOR EXTRACTION AND SEPARATION OF NIOBIUM, TANTALUM AND RARE EARTHS FROM COLUMBITE AND TIN SLAG · SNTMOM/513/2021 · Approved with Modification
- Utilization of aluminium dross to achieve zero waste – A benchscale study ( · JNARDDC/S-33 · Completed
- Preparation of low ferric alum from low grade aluminium dross on lab. Scale. (NALCO) · JNARDDC/A-58 · Completed
- Development of a suitable process for conversion of waste aluminium dross into value added product SESA STERLITE, Jharsuguda, Odisha · JNARDDC/A-84 · Completed
Patent families
- A process for recovering aluminium and value-added products from aluminium dross · WO-2026172314-A1 · Eesavyasa Technologies
- A process for recovery of iron from copper slag · WO-2007066350-A1 · CSIR (Council of Scientific & Industrial Research)
- Direct smelting process · AU-2011301784-B2 · Dry Rodney James
- (no English title in the source record) · IN-2015DN00816-A · Loesche Gmbh
- A process for manufacturing aluminum from bauxite or its residue · AU-2013100000-A4 · Gharda Keki Hormusji
- (no English title in the source record) · IN-2014CN04194-A · Tata Steel
- (no English title in the source record) · IN-2014KN03002-A · Alcoa Inc
- Method for recovery of alumina from aluminium dross · WO-2014174527-A1 · Aditya Birla Science & Technology
- Hydrometallurgical process for the recovery of tellurium from high lead bearing copper refinery anode slime · US-2015053572-A1 · CSIR (Council of Scientific & Industrial Research)
- Method and apparatus for handling steel making slag and metal recovery · WO-2015068172-A1 · Prasad Babu Nand
- Smelting process and apparatus · AU-2014366893-A1 · Tata Steel
- Apparatus and method for solder recovery · US-2015368746-A1 · Atul Limaye
- Process for recovering vanadium in the form of iron vanadate from a gasifier slag · WO-2019155430-A1 · Reliance Industries
- Process for obtaining vanadium oxide from a gasifier slag · WO-2019193510-A1 · Reliance Industries
- Effective utilization of jarosite waste · CA-3136907-A1 · Malshe Vinod Chintamani
- A process for recovery of metal from black slag · WO-2022215081-A2 · Mangalam Alloys
- Method for recovery of pure alumina from aluminium dross · WO-2024134582-A1 · Indiano Refractories
- Process to produce alumina from aluminium dross · WO-2024209483-A1 · Runaya Refining Llp
- An extraction process of metals from jarosite · WO-2024241334-A1 · Hindustan Zinc
- A method for recovering metal values from solder dross · WO-2025041020-A1 · Attero Recycling
- Method of processing aluminium dross residue to obtain non-hazardous products therefrom · WO-2025177249-A1 · Indiano Refractories
Red mud (bauxite residue)
Matched words: red mud, bauxite residue, Bayer residue.
R&D projects (SATYABHAMA and JNARDDC)
- Development of Process and Technology of Super Plasma Arc Furnace (SPAF) for Processing and Recovery of Valuables from Red Mud and Ilmenite · SNTMOM/1745/2026 · Recommended to PSCII with Modification
- Candidate related patent: Extraction process for reactive metal oxides (mineral: Titanium; waste stream: Red mud (bauxite residue))
- Candidate related patent: A process for manufacturing aluminum from bauxite or its residue (mineral: Titanium; waste stream: Red mud (bauxite residue))
- Development of supercapacitor devices for grid-level energy storage application based on natural mineral Chalcopyrite and bauxite residue · SNTMOM/718/2022 · Approved with Modification
- Technology development for holistic utilization of red mud for extraction of metallic values and residue utilization · SNTMOM/414/2021 (also JNARDDC S-37) · Approved without Modification
- Bio-electrochemical reclamation of titanium and other rare earth metals from red mud waste using a modified microbial fuel cell approach · SNTMOM/331/2020 · Approved with Modification
- Candidate related patent: Extraction process for reactive metal oxides (mineral: Titanium; waste stream: Red mud (bauxite residue))
- Candidate related patent: A process for manufacturing aluminum from bauxite or its residue (mineral: Titanium; waste stream: Red mud (bauxite residue))
- Development of Alternative flux Material from Red Mud for Steel Dephosphorization · SNTMOM/293/2020 · Approved with Modification
- Red Mud Valorization to Achieve Zero Waste, Conversion of Residue Into Diagnostic X-Ray Shielding Tiles After Recovery of Scandium · SNTMOM/108/2020 (also JNARDDC S-38) · Approved with Modification
- Setting up a Pilot Demonstration Plant for Red Mud Bricks · JNARDDC/N-52 · Ongoing · NALCO, Bhubaneshwar with Manishri Refractories & Ceramics Pvt. Ltd. Cuttack (MRCPL)
- Development of red mud-based pigment & filler for paint and allied industry · JNARDDC/S-63 · Ongoing · S&T(Mines) & Industry : CHEMSPERTS
- Status report on work carried out nationally and internationally on Red Mud to benchmark future investigation in the country ( · JNARDDC/S-28 · Completed
- Development of guidelines for disposal & utilization of red mud for Aluminium industry, (CPCB, Delhi) · JNARDDC/A-14 · Completed
- Management of bauxite residue (AP-7 Red mud project ) (NALCO) a) Bench scale studies for Development of Glass Ceramics & b) Development of light weight aggregates- Foam Products · JNARDDC/A-59 · Completed
- Pilot scale development of process technology for manufacturing of constructional blocks / bricks and artificial ceramic stone chips utilising red mud (NALCO & MRCPL) · JNARDDC/A-65 · Completed
- Setting up of Mini-pilot plant for red mud based light weight foamed bricks at NALCO (NRTC), Bhunbaneswar · JNARDDC/A-87 · Completed
- Utilization and development of process for recovery of strategic rare earths from industrial waste –Bauxite Residue at lab scale, Ministry of Science and Technology (DST) · JNARDDC/P-55 · Completed
- An innovative and viable process for recovery of iron values from red mud and processing of non-iron material for developing value added products – Complete Utilisation of red mud. NALCO · JNARDDC/N-46 · Completed
Patent families
- Extraction process for reactive metal oxides · WO-2004113230-A1 · Jha Animesh
- A process for manufacturing aluminum from bauxite or its residue · AU-2013100000-A4 · Gharda Keki Hormusji
- (no English title in the source record) · IN-2014MN01026-A · Obchestvo S Ogranichennoj Otvetstvennostju Promy Kompanija Tehnologija Metallov
- (no English title in the source record) · IN-2015DN00599-A · Obshchestvo S Ogranichennoy Otvetstvennostyu Obedinennaya Kompaniya Rusal Inzh T Ts
- Method and system for extraction of iron values from red mud · US-2023249981-A1 · Eesavyasa Technologies
- Radiation shielding red mud based hybrid composite panel and process for preparing the same · US-12500007-B2 · CSIR (Council of Scientific & Industrial Research)
- High dense red mud shields for x- and gamma -ray attenuation · EP-4211080-A4 · CSIR (Council of Scientific & Industrial Research)
- System and method for producing magnetite from red mud using two stage reactors · WO-2021214784-A1 · IIT Madras
- An anode composition for enhanced li-ion battery applications and its extraction from red mud · WO-2017072793-A1 · CSIR (Council of Scientific & Industrial Research)
- Method and system for extracting red-mud lumps from slurry · US-2016137521-A1 · Sesa Sterlite Ltd
Recent Indian Patent Office Journal filings
- Green technology for the production of Titanium dioxide from Waste Red Mud · 23/2026 · Jadavpur University
Spent batteries and black mass
Matched words: spent/waste/used battery, black mass, battery recycling, spent cathode.
R&D projects (SATYABHAMA and JNARDDC)
- Techno economic Investigation of Pyro and Hydro metallurgical Metal Recovery methods from Spent Batteries for Chemical Looping CO2 Capture · SNTMOM/1726/2026 · Recommended to PSCII with Modification
- Functional Ceramics for Recovery of Li, Co, and Ni from Spent Lithium-ion Batteries and Commercial Scaleup · SNTMOM/1720/2026 · Status not stated
- Candidate related patent: A method of recovering metals from spent li-ion batteries (mineral: Lithium; waste stream: Spent batteries and black mass)
- Candidate related patent: Process for recovering metal values from spent lithium ion batteries with high manganese content (mineral: Lithium; waste stream: Spent batteries and black mass)
- Candidate related patent: Process for recovery of pure cobalt oxide from spent lithium ion batteries with high manganese content (mineral: Lithium; waste stream: Spent batteries and black mass)
- Triple-Stage Sequential Electrochemical (TRISEL) Cell for Selective Recovery of Li, Co, and Ni from Spent Li-Ion Battery black mass leachate · SNTMOM/1717/2026 · Recommended to PSCII
- Candidate related patent: An apparatus and a method for separation of graphite and black mass from spent lithium-ion batteries (mineral: Lithium; waste stream: Spent batteries and black mass; title words: spent, black, mass)
- Candidate related patent: Method and system for producing precursor material from black mass of spent lithium-ion batteries (mineral: Lithium; waste stream: Spent batteries and black mass; title words: spent, black, mass)
- Candidate related patent: A method of recovering metals from spent li-ion batteries (mineral: Lithium; waste stream: Spent batteries and black mass)
- Sustainable process development for urban mining transition metals from end-of-life Li-ion batteries · SNTMOM/1407/2024 · Approved with Modification
- Candidate related patent: Process for recovery of battery cathode metal oxides from the end-of-life batteries using copper and iron (mineral: Lithium; waste stream: Spent batteries and black mass; title words: end, life)
- Candidate related patent: A method of recovering metals from spent li-ion batteries (mineral: Lithium; waste stream: Spent batteries and black mass)
- Candidate related patent: Process for recovering metal values from spent lithium ion batteries with high manganese content (mineral: Lithium; waste stream: Spent batteries and black mass)
- Development of an efficient process to recover Li, Co and Ni from spent lithium ion batteries. · SNTMOM/1374/2024 · Approved with Modification
- Candidate related patent: A method of recovering metals from spent li-ion batteries (mineral: Lithium; waste stream: Spent batteries and black mass)
- Candidate related patent: Process for recovering metal values from spent lithium ion batteries with high manganese content (mineral: Lithium; waste stream: Spent batteries and black mass)
- Candidate related patent: Process for recovery of pure cobalt oxide from spent lithium ion batteries with high manganese content (mineral: Lithium; waste stream: Spent batteries and black mass)
- Recovery of Metals from Spent Li-Ion Batteries Using Green Reagents · SNTMOM/1193/2024 · Approved with Modification
- Candidate related patent: A method of recovering metals from spent li-ion batteries (mineral: Lithium; waste stream: Spent batteries and black mass)
- Candidate related patent: Process for recovering metal values from spent lithium ion batteries with high manganese content (mineral: Lithium; waste stream: Spent batteries and black mass)
- Candidate related patent: Process for recovery of pure cobalt oxide from spent lithium ion batteries with high manganese content (mineral: Lithium; waste stream: Spent batteries and black mass)
- Closed Loop Recovery of Li and Ni from Spent Batteries, and Sustainable Electrode Development for High-performance Next-generation Indigenous Batteries · SNTMOM/1168/2024 · Approved with Modification
- Preparation of 99 percent pure nickel-cobalt alloy and Ferronickel 66Fe 31Ni from waste batteries and recovery of Rare Earth Elements in the form of oxides · SNTMOM/1162/2024 · Approved with Modification
- Candidate related patent: Process for recovery of pure cobalt oxide from spent lithium ion batteries with high manganese content (mineral: Cobalt; waste stream: Spent batteries and black mass)
- Candidate related patent: Method for recovery of metals and metal alloys from waste lithium-ion batteries (mineral: Nickel; waste stream: Spent batteries and black mass)
- Candidate related patent: Process for recovery of metals and carbon powder from spent lithium ion batteries (mineral: Nickel; waste stream: Spent batteries and black mass)
Patent families
- A method of recovering metals from spent li-ion batteries · WO-2017006209-A1 · Attero Recycling
- Process for recovering metal values from spent lithium ion batteries with high manganese content · WO-2017118955-A1 · Attero Recycling
- Process for recovery of pure cobalt oxide from spent lithium ion batteries with high manganese content · WO-2017145099-A1 · Attero Recycling
- Process for recovery of metals and carbon powder from spent lithium ion batteries · WO-2022101930-A1 · Hydromet Tech Solutions
- A method of removing and safe disposal of electrolyte from spent lithium-ion batteries · WO-2023214366-A1 · Attero Recycling
- Method for recovery of metal oxides/carbonates from assorted waste li-ion batteries · US-2023391632-A1 · C-MET (Ministry of Electronics & IT)
- Method for recovery of metals and metal alloys from waste lithium-ion batteries · US-2024002978-A1 · C-MET (Ministry of Electronics & IT)
- An apparatus and a method for discharging spent lithium-ion battery · WO-2024189564-A1 · Attero Recycling
- A method for producing titanium dioxide from waste lithium titanate batteries · WO-2025012769-A1 · Attero Recycling
- An apparatus and a method for separation of graphite and black mass from spent lithium-ion batteries · WO-2025027540-A1 · Attero Recycling
- A process for production of titanium dioxide from anode material of spent lithium titanate batteries · WO-2025032494-A1 · Attero Recycling
- Process for recovery of battery cathode metal oxides from the end-of-life batteries using copper and iron · WO-2025046622-A1 · IIT Kharagpur
- Method and system for producing precursor material from black mass of spent lithium-ion batteries · WO-2026047633-A1 · BatX Energies
Recent Indian Patent Office Journal filings
- “Process and System for Selective Recovery of Lithium from Lithium Cobalt Oxide - Rich Battery Black Mass” · 36/2026 · Indian Institute of Technology Bombay
- SYSTEM AND METHOD FOR RECOVERY OF VALUABLE METALS AND PRODUCTION OF P - CAM FROM BLACK MASS · 35/2026 · MDK SUSTECH PRIVATE LIMITED
- LITHIUM AND GRAPHITE RECYCLED FROM BLACK MASS · 33/2026 · TOZERO GMBH
E-waste and electronic scrap
Matched words: e-waste, electronic waste/scrap, printed circuit board, WEEE.
R&D projects (SATYABHAMA and JNARDDC)
- Microdroplets-assisted extraction of critical rare earth elements from e-waste · SNTMOM/1724/2026 · Status not stated
- Candidate related patent: Method and system for separation of rare earth elements from secondary sources (mineral: Rare earths; waste stream: E-waste and electronic scrap)
- Candidate related patent: A method for recovery of rare earth elements and base metals from magnet scrap (mineral: Rare earths; waste stream: E-waste and electronic scrap)
- Advancing Circular Economy - Developing polymer inclusion membranes (PIMs) for Rare Earth Element Recovery from E-Waste · SNTMOM/1583/2025 · Status not stated
- Candidate related patent: Method and system for separation of rare earth elements from secondary sources (mineral: Rare earths; waste stream: E-waste and electronic scrap)
- Candidate related patent: A method for recovery of rare earth elements and base metals from magnet scrap (mineral: Rare earths; waste stream: E-waste and electronic scrap)
- Enhancing Recovery of Precious Metals from Electronic Wastes via Lixiviant Metabolic Engineering by Chromobacterium Violaceum and Pseudomonas Balearica · SNTMOM/1398/2024 · Approved with Modification
- Online estimation of gold, copper, platinum, palladium and silver content in recyclable PCBs through vision sensor and deep learning based image processing. · SNTMOM/1341/2024 · Approved with Modification
- Candidate related patent: Method for treating an ammonical copper etching pcb wastewater (mineral: Copper; waste stream: E-waste and electronic scrap)
- Candidate related patent: A method and process of recovering metal values from waste monolithic ceramic capacitors (mineral: Copper; waste stream: E-waste and electronic scrap)
- Candidate related patent: Process for recycling epoxy resins from electronic waste and product thereof (mineral: Copper; waste stream: E-waste and electronic scrap)
- An integrated technology for critical elements recovery from e-waste and debromination of e-waste plastics · SNTMOM/1300/2024 · Approved with Modification
- Sustainable Recovery of Critical and Rare Earth Metals from E-waste using Integrated Aqueous Metallurgy · SNTMOM/1281/2024 · Budget Released
- Candidate related patent: Method and system for separation of rare earth elements from secondary sources (mineral: Rare earths; waste stream: E-waste and electronic scrap)
- Candidate related patent: A method for recovery of rare earth elements and base metals from magnet scrap (mineral: Rare earths; waste stream: E-waste and electronic scrap)
- Development of a two-stage e-waste segregation system using transfer learning · SNTMOM/994/2023 · Approved with Modification
Patent families
- A method for selective separation of precious metals from e-waste and spent nickel catalysts · WO-2026139776-A1 · Neo Seeker Metals
- A method and process of recovering metal values from waste monolithic ceramic capacitors · WO-2017037625-A1 · Attero Recycling
- Process for recycling epoxy resins from electronic waste and product thereof · WO-2017077512-A1 · Attero Recycling
- A process of recovering metal values from chips of waste printed circuit boards (pcbs) · WO-2017046687-A1 · Attero Recycling
- Sequential extraction of metals from printed circuit boards by hydrometallurgical route using the same acid · WO-2020044365-A1 · IIT Madras
- Method and system for separation of rare earth elements from secondary sources · EP-3715482-A1 · Tata Consultancy Services
- A method for recovery of rare earth elements and base metals from magnet scrap · WO-2025219857-A1 · Attero Recycling
- Method for treating an ammonical copper etching pcb wastewater · US-2026109634-A1 · Patel Hiteshkumar
Spent catalysts
Matched words: spent catalyst.
R&D projects (SATYABHAMA and JNARDDC)
- Recovery of Molybdenum, Nickel and Alumina values from spent hydrotreating catalyst of HPCL and Demonstration at Pilot plant (TRL-7) and techno-economic feasibility studies. · SNTMOM/952/2023 · Approved with Modification
- Candidate related patent: Process for recovery of nickel from spent catalyst (mineral: Nickel; waste stream: Spent catalysts; title words: spent, catalyst)
- Candidate related patent: Process for the recovery of nickel from spent catalyst (mineral: Nickel; waste stream: Spent catalysts; title words: spent, catalyst)
- Candidate related patent: Energy efficient system and method for fluidized bed roasting of spent catalyst to recover metal values (mineral: Molybdenum; waste stream: Spent catalysts; title words: spent, catalyst)
- Recovery of sulphur free nickel from pharmaceutical spent catalyst sludge to achieve zero waste · JNARDDC/S-59 · Ongoing · S&T(Mines) & Industry ABN Metal Recycling Pvt. Ltd and VNIT
- Candidate related patent: Zero waste technology for spent catalyst recycling by hydro metallurgy pyrometallurgy combination (mineral: Nickel; waste stream: Spent catalysts; title words: spent, catalyst, zero)
- Candidate related patent: Process for recovery of nickel from spent catalyst (mineral: Nickel; waste stream: Spent catalysts; title words: spent, catalyst)
- Candidate related patent: Process for the recovery of nickel from spent catalyst (mineral: Nickel; waste stream: Spent catalysts; title words: spent, catalyst)
Patent families
- Process for the recovery of palladium from spent silica · US-7108839-B2 · CSIR (Council of Scientific & Industrial Research)
- A process for the recovery of adsorbed palladium from spent silica · CA-2508237-A1 · CSIR (Council of Scientific & Industrial Research)
- Process for recovery of nickel from spent catalyst · US-6733564-B1 · CSIR (Council of Scientific & Industrial Research)
- Process for the recovery of nickel from spent catalyst · WO-03080878-A1 · CSIR (Council of Scientific & Industrial Research)
- Process for recovery of palladium from spent catalyst · US-7473406-B2 · CSIR (Council of Scientific & Industrial Research)
- Process for recovery of palladium from spent catalyst · WO-2004106563-A1 · CSIR (Council of Scientific & Industrial Research)
- Process for recovery of palladium from spent catalyst · KR-20060012657-A · CSIR (Council of Scientific & Industrial Research)
- A process for the recovery of adsorbed palladium from spent silica · KR-20050089807-A · CSIR (Council of Scientific & Industrial Research)
- (no English title in the source record) · IN-2015DN03228-A · Chevron Usa Inc
- Energy efficient system and method for fluidized bed roasting of spent catalyst to recover metal values · WO-2021019564-A1 · Rubamin Private Ltd
- A process for neutralization of spent catalyst · WO-2022123586-A1 · Ongc Petro Additions Ltd
- Zero waste technology for spent catalyst recycling by hydro metallurgy pyrometallurgy combination · WO-2024252341-A1 · Roy Aishwarya
Coal fly ash and coal rejects
Matched words: fly ash, coal ash, bottom ash, coal washery rejects.
R&D projects (SATYABHAMA and JNARDDC)
- Microwave-Assisted Enhanced Recovery of Rare Earth Elements from Fly Ash and Coal Washery Rejects · SNTMOM/1737/2026 · Recommended to PSCII
- Setting up of pilot cum demonstration plant for recovery of alumina and value-added products from fly ash · SNTMOM/1034/2023 · Approved with Modification
- Setting up of a 100 kg Coal Fly-ash Pilot Processing unit to extract high-purity fumed Silica and Aluminium fluoride from CFA · SNTMOM/1014/2023 · Approved with Modification
- Candidate related patent: Process for the production of silica enriched flyash based zeolite-y (faz-y) (mineral: Silicon; waste stream: Coal fly ash and coal rejects)
- Bench scale study on extraction of pure Silica and smelter grade Aluminium Fluoride from Coal Fly Ash (CFA) – · JNARDDC/S-31 · Completed
- Candidate related patent: Process for the production of silica enriched flyash based zeolite-y (faz-y) (mineral: Silicon; waste stream: Coal fly ash and coal rejects)
- Development of Ceramic Proppant form PLK and Fly Ash at Laboratory Scale , NALCO · JNARDDC/A-83 · Completed
- Development of ceramic proppant from low grade materials (Partially LateritisedKhondalite -PLK, Fly ash, etc.) - Phase-II-Scale up studies ( NALCO, Bhubaneswar ) · JNARDDC/N-45 · Completed
Patent families
- Surface-modified zeolite and process for synthesis thereof for sequestration of anions · US-7510659-B2 · CSIR (Council of Scientific & Industrial Research)
- Process for the synthesis of fly ash based zeolite-a · GB-2345056-B · CSIR (Council of Scientific & Industrial Research)
- Process for the production of silica enriched flyash based zeolite-y (faz-y) · GB-2339775-B · CSIR (Council of Scientific & Industrial Research)
- Process for the production of flyash based zeolite y (faz-y) · GB-2339774-B · CSIR (Council of Scientific & Industrial Research)
- Process for the synthesis of flyash based zeolite-Y · US-6027708-A · CSIR (Council of Scientific & Industrial Research)
Mine tailings and dumps
Matched words: tailings, mine waste, overburden, dumps.
R&D projects (SATYABHAMA and JNARDDC)
- A process for preparation of cost-effective nanofluid from bauxite wastes and ferrous-based tailings for HVAC application · SNTMOM/999/2023 · Approved with Modification
- Synthesis of precipitated silica from waste beach sand tailings and its value addition in glass making industries · SNTMOM/967/2023 · Approved with Modification
- Development of a sustainable material using chromite mine overburden and other industrial wastes for stowing or backfilling of underground mines in Sukinda Valley, Odisha · SNTMOM/832/2022 · Approved with Modification
- Recovery of galena, sphalerite from lead zinc tailings by integrated energy efficient ultrafine comminution and novel shear floc-flotation and its impact on downstream Paste fill · SNTMOM/386/2020 · Approved with Modification
- Determination of optimum safe distance of toe of dump from crest of openpit for stability of pit slope under different geo-mining conditions · SNTMOM/90/2020 · Approved with Modification
- Recycling Coal Mine Overburden to Reuse as a Value-Added Building Material to Promote a Circular Economy, by Central Mine Planning and Design Institute (CMP&DI), under S&T Plan of Ministry of Coal, Gov. of India (with Civil Eng. Dept, VNIT, Nagpur, Dept. of Architecture & Planning, BIT Mesra and Civil Eng. Division, CMPDIL, Dhanbad ) · JNARDDC/P-65 · Completed
- Coal mine overburden alkali-activated composites (CMOAAC) for pre-fabricated 3D volumetric construction elements & system thereof (3DVCES); MT-182: Ministry of Coal · JNARDDC/P-67 · Completed
Patent families
- Column thickener and a process thereof for dewatering of iron ore slurry · WO-2016135750-A1 · CSIR (Council of Scientific & Industrial Research)
Recent Indian Patent Office Journal filings
- A METHOD OF PRODUCING A NICKEL CONTAINING IRON ALLOY FROM A CHROMITE OVERBURDEN ORE · 30/2026 · TATA STEEL LIMITED
Other industrial waste
Matched words: industrial waste, industrial by-product, waste stream (when no stream above matches).
R&D projects (SATYABHAMA and JNARDDC)
- Extraction of Gallium from Titanium and Iron ore Industrial wastes · SNTMOM/1171/2024 (also JNARDDC S-51) · Approved with Modification · CSIR NIIST, MoM, CSIR to NIIST & V.V Titanium Pigments Pvt. Ltd
- Pilot Plant Extraction of Rare Earth Elements (Scandium, Neodymium, and Europium) from KMML Titanium industrial waste · SNTMOM/1024/2023 · Approved with Modification
- Synergistic utilization of aluminium industrial wastes for development of geopolymeric building materials. S&T Mines & Swarnalata Holdings, Raipur · JNARDDC/S-21 · Completed
- Recycling of industrial wastes into Glass Ceramic Products (Building materials and Technology Promotion Council, New Delhi) · JNARDDC/A-26 · Completed
Patent families
- Process for complete conversion of multiple industrial wastes to sustainable alternatives and usable products · WO-2016108245-A1 · Kandhari Harish
- Novel trialuminum hydroxy chloride of formula al3(oh)4cl5 and process for the preparation thereof from industrial waste · US-2020180972-A1 · Nagar Nareshkumar Ishwarlal
- A novel process for preparation of synthetic hydrotalcite from industrial waste · EP-2890641-B1 · CSIR (Council of Scientific & Industrial Research)
Magnet scrap
Matched words: magnet scrap/waste, NdFeB scrap, spent magnet.
R&D projects (SATYABHAMA and JNARDDC)
- Biohydrometallurgical Extraction of REEs from NdFeB Magnet Waste Utilizing Acidogenic Fungal Systenms · SNTMOM/1741/2026 · Recommended to PSCII
- Candidate related patent: A method for recovery of rare earth elements and base metals from magnet scrap (mineral: Rare earths; waste stream: Magnet scrap)
- Sustainable Recovery of Nd from Nd-Fe-B Magnet Scraps Through Alloy Assisted Extraction and Selective Distillation · SNTMOM/1706/2026 · Recommended to PSCII
Patent families
- A method for recovery of rare earth elements and base metals from magnet scrap · WO-2025219857-A1 · Attero Recycling
Phosphogypsum
Matched words: phosphogypsum.
Patent families
- Method for recovering rare earth metals (rems) from phosphogypsum industrial waste · WO-2026120423-A1 · Lohum
Candidate link: the patent family and the R&D project name at least one India-list mineral in common, and they also share a waste stream or at least two content words in their English titles (mineral names and common words such as process, method, recovery are ignored). Up to five best matches are shown per project. Links are computed by rule, not confirmed with the project team or the applicant.