Rare Earth Permanent Magnet Manufacturing Facility

Project Overview

An Indian critical minerals consortium and a Japanese permanent magnet technology partner engaged IMARC Engineering to establish a greenfield rare earth permanent magnet (NdFeB) manufacturing facility in Jharkhand.

The project was structured against the Government of India's National Critical Minerals Mission, the parallel institutional framework spanning India Rare Earths Limited (IREL) processing operations and KABIL (Khanij Bidesh India Limited) overseas critical mineral joint ventures, and the strategic imperative of localising rare earth permanent magnet manufacturing given India's near-total import dependence on this category, a single-largest strategic supply-chain vulnerability for the country's EV, wind, and industrial motor sectors.

The project involved establishing 1,600 MT per annum of sintered NdFeB permanent magnet manufacturing capacity across standard, medium-temperature, and high-coercivity grades — targeting the Indian EV traction motor, wind turbine generator, industrial motor, and consumer electronics markets. Site infrastructure was designed for Phase 2 expansion adding a high-temperature grade production line for demanding automotive traction applications and a heavy rare earth grain-boundary diffusion capability that would reduce dysprosium and terbium consumption for high-coercivity products.

Client's Challenges

The client faced several specific challenges in establishing greenfield rare earth permanent magnet manufacturing in India:

• Rare earth feedstock supply security: Structuring a resilient feedstock supply chain covering light rare earths (neodymium, praseodymium) sourced through IREL processing of Indian coastal monazite alongside international supplementary supply, and heavy rare earths (dysprosium, terbium) sourced through KABIL overseas joint venture arrangements and international specialists — in a category where global concentration of processing remains a defining strategic risk.
• Precision magnet metallurgy: Engineering the full NdFeB manufacturing sequence spanning strip casting of the rare earth alloy, hydrogen decrepitation, magnetic-field-aligned pressing, sintering under controlled atmosphere — with tight controls at each step critical to achieving target magnetic properties.
• Grade portfolio and Dy substitution: Delivering the medium-temperature and high-coercivity grades required for EV traction motor and wind turbine generator applications, while progressively minimising dysprosium consumption through grain refinement and eventual grain-boundary diffusion technology in Phase 2, reducing the plant's exposure to heavy rare earth supply concentration.
• Coating and corrosion protection: Engineering the multi-layer surface coating infrastructure (nickel-copper-nickel electroplating, epoxy coating, or aluminium ion-vapour deposition depending on application) required to protect the highly corrosion-susceptible NdFeB base material across the range of end-application environments.
• Critical Minerals Mission compliance: Meeting the emerging National Critical Minerals Mission's investment, production, and value-addition milestones alongside the DPIIT Public Procurement (Preference to Make in India) local content requirements applicable to critical minerals sourcing under central and state government procurement.
• Workforce build-up: Recruiting 380 personnel including rare earth metallurgists, magnet process engineers, precision machining specialists, and quality engineers in the Adityapur industrial ecosystem which hosts the broader Tata Steel and Tata Motors Jamshedpur cluster and its established metallurgical talent base.

What We Did

• Pre-Investment and Strategic Advisory

Our feasibility study evaluated three candidate Indian states — Jharkhand, Andhra Pradesh, and Kerala, with Jharkhand selected on the strength of the surrounding metallurgical ecosystem (with Tata Steel Jamshedpur and the broader Tata Group presence providing established metallurgical talent, rare earth alloy processing know-how, and downstream customer proximity), established JIADA (Jharkhand Industrial Area Development Authority) industrial infrastructure with dedicated heavy-industry plots, proximity to iron and boron raw material sources, the Jharkhand Industrial and Investment Promotion Policy 2021 incentive structure, and access to engineering talent from IIT Dhanbad and NIT Jamshedpur.

CapEx planning of INR 590 Crore covered the strip casting and alloy processing hall, the milling and pressing area, the sintering and heat treatment furnaces, the precision machining zone, the coating and surface treatment area, the magnetic property testing and metrology laboratory, the warehouse, and central utilities. Financial modelling demonstrated post-tax IRR of 20.4 percent at full ramp with a 6.4-year payback.

• Engineering and Design Services

IMARC designed a 28,000 sq.m built-up facility on a 16-acre plot comprising the strip casting hall for rare earth alloy production, the hydrogen decrepitation and jet milling area (engineered to the strict inert atmosphere control required for the highly reactive rare earth powder handling), the magnetic-field-aligned pressing zone, the sintering furnace bank operating under controlled vacuum and inert atmospheres, the precision machining area, the multi-stage coating and surface treatment area covering electroplating and epoxy coating capabilities, the magnetic property testing laboratory with permeameters and Helmholtz coil test setups, and the warehouse and outbound logistics area.

Process utility design covered 8 MW grid demand supplemented by a 2 MW captive rooftop solar array, dedicated inert gas supply (argon and nitrogen) for the reactive powder handling and sintering operations, precision temperature-controlled HVAC across the pressing and coating zones, dedicated fire suppression infrastructure for the hydrogen decrepitation and reactive powder areas, and integrated MES for lot traceability aligned with the strict magnetic property acceptance protocols.

• Procurement and Supply Chain Support

We executed a multi-geography procurement programme across 48 critical vendors. Strip casting and alloy processing equipment was sourced from established Japanese and European rare earth alloy equipment specialists. Jet milling, magnetic-field-aligned pressing, and sintering furnaces were sourced from established Japanese and European specialists with documented references in the global NdFeB magnet industry. Precision machining and surface coating equipment was sourced from a combination of Japanese, European, and Indian specialists. Magnetic property testing infrastructure was sourced from European and Japanese metrology specialists. Feedstock sourcing was structured under the emerging Indian critical minerals framework: light rare earth oxides (Nd2O3, Pr6O11) sourced through IREL and international specialist arrangements, heavy rare earth oxides (Dy2O3, Tb4O7) sourced through KABIL overseas joint venture channels and international specialists, and iron and boron sourced through established Indian metals suppliers. Domestic Content reached 38 percent in Year-1 operations and 44 percent in Year-2 as the IREL feedstock supply ramp progressed and the local supplier base for auxiliary materials matured.

• Project Execution and Site Management

Our turnkey project management delivered 24 months from groundbreaking to first commercial dispatch, coordinating civil construction, mechanical and electrical erection, specialty utility infrastructure installation, equipment integration, and phased commissioning across the strip casting, milling, pressing, sintering, machining, and coating zones. Phased commissioning ran the strip casting and alloy processing hall first (as the highest-value upstream process defining the plant's product capability), followed by the milling and pressing zone, then the sintering furnace bank, then the precision machining and coating areas, and finally the magnetic property testing laboratory with progressive customer product qualification campaigns. Multi-vendor coordination across Japanese, European, and Indian contractors required an 18-strong owner's engineering team supplemented by 12 Japanese resident engineers from the technology partner during the strip casting, sintering, and initial product qualification phases.

• Compliance, Quality and Sustainability

IMARC led certification readiness for the IEC 60404 series covering magnetic material specifications and test methods, with compliance verified across the product portfolio during the first year of operations. It also supported ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, and ISO 50001:2018 certifications, along with supplier qualification programmes for EV motor OEMs, wind turbine OEMs, and industrial motor manufacturers.

Environmental compliance covered Jharkhand State Pollution Control Board Consent to Establish and Operate, Hazardous Waste Authorisation for the rare earth process residues and spent surface treatment chemistry (managed through dedicated recovery and licensed offsite disposal), and Extended Producer Responsibility commitments for end-of-life magnet material recovery aligned with the emerging Indian critical minerals recycling framework.

The facility achieved IGBC Gold certification through 2 MW captive rooftop solar covering approximately 18 percent of facility daytime energy demand, heat recovery from sintering furnace operations and coating bath heating, 62 percent process water reclamation, and 18 percent lower facility energy intensity versus the Chinese rare earth magnet industry benchmark.

Final Results

Operational Performance

The facility achieved mechanical completion in 24 months with first commercial dispatch in month 25. Full 1,600 MT per annum nameplate capacity was reached at 76 percent utilisation by month 20 of operations, with sustained first-pass magnetic property acceptance of 96.8 percent across the standard, medium-temperature, and high-coercivity grade portfolio.

IEC 60404 series magnetic property compliance was verified across product grades in Year-1, customer product qualification audits were successfully completed with three EV motor manufacturers, two wind turbine OEMs, and two industrial motor customers, and the facility became the first sizeable operational NdFeB manufacturing site in India under the emerging critical minerals framework.

Financial Outcomes

Final CapEx of INR 560 Crore delivered 5.1 percent savings against the INR 590 Crore budget through optimised civil packaging, disciplined Indian-fabrication leverage across the structural and specialty utility scope, and multi-vendor procurement across the specialty equipment supply base.

Year-2 revenue of INR 760 Crore was generated at an EBITDA margin of 15 percent, consistent with established global rare earth permanent magnet manufacturer reporting and supported by the strategic-materials pricing premium and the emerging Indian EV traction and wind turbine demand pipeline.

Market Access

Long-term supply commitments were signed with three Indian EV motor manufacturers covering the growing EV traction motor demand pipeline, two wind turbine OEMs supplying the Indian wind energy build-out programme, and two industrial motor customers serving the domestic industrial motor and appliance segments.

Export share reached 22 percent of revenue by Year-2 through entries into ASEAN markets where the emerging non-China REPM supply source is structurally valued by regional EV, wind, and industrial motor manufacturers. The facility positioned itself as a strategically important non-China source of NdFeB permanent magnets aligned with the broader friend-shoring dynamics in the global critical minerals supply chain.

Sustainability Impact

Our integrated design, combining 2 MW captive rooftop solar covering approximately 18 percent of facility daytime energy demand, heat recovery from the sintering furnace bank and surface coating bath operations, variable-frequency drives across HVAC and process systems, and LED lighting throughout, achieves 18 percent lower facility energy intensity versus the Chinese rare earth magnet industry benchmark.

Process water reclamation reaches 62 percent through closed-loop cooling and coating rinse recovery. The facility holds IGBC Gold certification and operates structured end-of-life magnet material recovery partnerships with the supplied EV motor and wind turbine customer base, aligning with the emerging Indian circular economy framework for critical minerals and creating a foundational recycling pathway for future Indian magnet supply.

Strategic Impact

The project established the first sizeable Indian rare earth permanent magnet manufacturing capability under the National Critical Minerals Mission framework, addressing what has historically been the single-largest strategic supply-chain vulnerability for India's EV, wind, and industrial motor sectors, near-total dependence on Chinese NdFeB imports.

Year-2 revenue of INR 760 Crore, IEC 60404 series compliance across the grade portfolio, secured EV motor and wind turbine OEM customer qualifications, and the emerging IREL feedstock supply pathway led the client to approve Phase 2 expansion comprising a high-temperature grade production line for advanced automotive traction applications and a heavy rare earth grain-boundary diffusion capability that would reduce dysprosium consumption.

IMARC Engineering's end-to-end EPCM advisory, combining rare earth metallurgy and magnet engineering, feedstock supply chain design across the IREL and KABIL institutional framework, Critical Minerals Mission scheme navigation, and IEC magnetic property compliance readiness, enabled the client to anchor a strategically important Indian industrial asset in a category where global concentration and manufacturing complexity have historically deterred first-time Indian entrants.