Boston Metal Bra (IFC-50739)

Regions
  • Latin America and Caribbean
Geographic location where the impacts of the investment may be experienced.
Countries
  • Brazil
Geographic location where the impacts of the investment may be experienced.
Specific Location
Coronel Xavier Chaves, Sao Joao del Rei
Whenever identified, the area within countries where the impacts of the investment may be experienced. Exact locations of projects may not be identified fully or at all in project documents. Please review updated project documents and community-led assessments.
Financial Institutions
  • International Finance Corporation (IFC)
International, regional and national development finance institutions. Many of these banks have a public interest mission, such as poverty reduction.
Project Status
Proposed
Stage of the project cycle. Stages vary by development bank and can include: pending, approval, implementation, and closed or completed.
Bank Risk Rating
B
Environmental and social categorization assessed by the development bank as a measure of the planned project’s environmental and social impacts. A higher risk rating may require more due diligence to limit or avoid harm to people and the environment. For example, "A" or "B" are risk categories where "A" represents the highest amount of risk. Results will include projects that specifically recorded a rating, all other projects are marked ‘U’ for "Undisclosed."
Voting Date
Jul 30, 2025
Date when project documentation and funding is reviewed by the Board for consideration and approval. Some development banks will state a "board date" or "decision date." When funding approval is obtained, the legal documents are accepted and signed, the implementation phase begins.
Borrower
Boston Electrometallurgical Corporation Brasil Ltda
A public entity (government or state-owned) provided with funds or financial support to manage and/or implement a project.
Sectors
  • Climate and Environment
  • Industry and Trade
  • Mining
The service or industry focus of the investment. A project can have several sectors.
Investment Type(s)
Loan
The categories of the bank investment: loan, grant, guarantee, technical assistance, advisory services, equity and fund.
Investment Amount (USD)
$ 50.00 million
Value listed on project documents at time of disclosure. If necessary, this amount is converted to USD ($) on the date of disclosure. Please review updated project documents for more information.
Loan Amount (USD)
$ 50.00 million
Value listed on project documents at time of disclosure. If necessary, this amount is converted to USD ($) on the date of disclosure. Please review updated project documents for more information.
Project Cost (USD)
$ 217.00 million
Value listed on project documents at time of disclosure. If necessary, this amount is converted to USD ($) on the date of disclosure. Please review updated project documents for more information.
Other Related Projects
Primary Source

Original disclosure @ IFC website

Updated in EWS Jul 2, 2025

Disclosed by Bank Jun 30, 2025


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Project Description
If provided by the financial institution, the Early Warning System Team writes a short summary describing the purported development objective of the project and project components. Review the complete project documentation for a detailed description.

As stated by the IFC, Boston Metal was founded in 2012 as a spinout from the Massachusetts Institute of Technology. The company patented the Molten Oxide Electrolysis (MOE), an electrochemical process that uses direct electric current and an anode to separate chemical compounds into their constituent parts. In 2022, BM established a subsidiary named Boston Electrometallurgical Corporation Brasil Ltda (“BMB”) in Minas Gerais, Brazil to recover high-value metals from by-products of mining and metallurgical operations that do not currently have an economically viable processing alternative due to the low concentration of the minerals of interest.

BMB is developing its project in three phases: pilot (Phase 0), industrial phase 1 (Phase I) and industrial phase 2 (Phase II). Facilities are in the municipality of Coronel Xavier Chaves, 3.5km from the urban center and 14km away from Sao Joao del Rei. In 2023, IFC invested in BM to further develop the MOE technology platform and expand operations in the United States and Brazil. Based on IFC’s supervision to date, the company’s environmental and social (E&S) performance has been satisfactory.  

IFC is considering a C Loan of US$50 million to finance industrial Phases I and II (“the Project”). The Project requires up to US$100 million in debt financing, and IFC is mobilizing the remaining balance of US$50 million in parallel loans. Upon the completion of industrial Phase II, BMB will have the capacity to produce over 11,000 tons per year of high value metals, including ferro tin (FeSn), ferro tantalum niobium (FeTaNb), ferro tantalum (FeTa) and ferro niobium (FeNb).

Phase I will include one electric furnace 3MVA and one electrolytic cell of 60kA (MOE) for processing approximately 7000 tons of metallurgical slag annually; Phase II will add one additional electric furnace 18MVA and four 300kA electrolytic cells (MOE) that will increase processing capacity to over 81 000 tons of slag per year. Charcoal will be used to produce part of the energy needed for the electric furnace and limestone will be used as a fluxing agent to remove impurities in the process. Processed steel scrap will be added to adjust the Fe content in both FeNb and FeTa alloys, ensuring the desired composition. Two transmission lines will connect the new facility to the national power electrical grid, located approximately 1.3km from the site. The project will use slag, a byproduct of mining and metallurgical processes primary composed of metal oxides and silica and up to %5 of naturally occurring radionuclides, namely Uranium and Thorium. After MOE processing, sludge (that is, the slag remaining from the MOE process) will still contain valuable oxides such as Zirconium and Rare Earth Metals that could be recovered in the future once appropriate technology becomes available.  Phase I is currently under construction and operations are expected to start in the second semester of 2025. Operations of Phase II are anticipated to commence in 2026. In the production process, the slag will be dried before being fed into an electric arc furnace for melting and where FeSn ferroalloy will be produced. The molten slag will be then transferred to an electrolysis cell to produce ferroalloys such as ferro tantalum niobium (FeTaNb), ferro tantalum (FeTa) and ferro niobium (FeNb). After MOE electrolysis, the sludge will be solidified, dried, and sent back to the slag owner. Recovered ferroalloys can be poured into ingots or other forms and temporarily stored for shipment to customers.                                                  

Investment Description
Here you can find a list of individual development financial institutions that finance the project.

As stated by the IFC, the estimated total cost of the Project is US$217 million. Of this amount, lenders are expected to contribute US$100 million, while the remaining funds will be sourced from equity and generated cash flow.

IFC is considering a C-Loan of US$50 million with a 10-year term and a 2-year grace period to support BMB's Project. Moreover, IFC is mobilizing additional US$50 million in parallel loans.

Private Actors Description
A Private Actor is a non-governmental body or entity that is the borrower or client of a development project, which can include corporations, private equity and banks. This describes the private actors and their roles in relation to the project, when private actor information is disclosed or has been further researched.

As stated by the IFC, the Company’s Sponsor is Boston Electrometallurgical Corporation, founded in 2012 in Woburn, Massachusetts, USA. Boston Metal boasts Tier 1 investors, including Microsoft, Aramco, BMW, Breakthrough Energy Ventures, Vale, BHP, and IFC.

Private Actor 1 Private Actor 1 Role Private Actor 1 Sector Relation Private Actor 2 Private Actor 2 Role Private Actor 2 Sector
BHP Billiton Ltd Investor Mining invests in Boston Metal Parent Company Mining
BMW Group Investor Industry and Trade invests in Boston Metal Parent Company Mining
Boston Metal Parent Company Mining owns Boston Electrometallurgical Corporation Brasil Ltda Client Mining
Breakthrough Energy Ventures LLC Investor Finance invests in Boston Metal Parent Company Mining
Microsoft Corporation Investor Communications invests in Boston Metal Parent Company Mining
Saudi Aramco Investor Energy invests in Boston Metal Parent Company Mining
Vale SA Investor Mining invests in Boston Metal Parent Company Mining

Contact Information
This section aims to support the local communities and local CSO to get to know which stakeholders are involved in a project with their roles and responsibilities. If available, there may be a complaint office for the respective bank which operates independently to receive and determine violations in policy and practice. Independent Accountability Mechanisms receive and respond to complaints. Most Independent Accountability Mechanisms offer two functions for addressing complaints: dispute resolution and compliance review.

General IFC Inquiries - IFC Communications

Address: 2121 Pennsylvania Avenue, NW, Washington DC 20433
Telephone: +1 202-473-3800
Fax: +1 202-974-4384

Client - Boston Electrometallurgical Corporation Brasil Ltda:

Tadeu Carneiro - Chairman & CEO
Phone: +1 (781) 281-7657
Email: Tadeu@bostonmetal.com
Address: Rod. Ver. João Vicente Viêira - Camargos, Cel. Xavier Chaves - MG, 36330-000
Website: https://br.bostonmetal.com/ 

ACCESS TO INFORMATION

You can submit a request for information disclosure at: https://disclosures.ifc.org/#/inquiries

If you believe that your request for information from IFC has been unreasonably denied, or that this Policy has been interpreted incorrectly, you can submit a complaint at the link above to IFC's Access to Information Policy Advisor, who reports directly to IFC's Executive Vice President.

ACCOUNTABILITY MECHANISM OF IFC/MIGA

The Compliance Advisor Ombudsman (CAO) is the independent complaint mechanism and fact-finding body for people who believe they are likely to be, or have been, adversely affected by an IFC or MIGA- financed project. If you submit a complaint to the CAO, they may assist you in resolving a dispute with the company and/or investigate to assess whether the IFC is following its own policies and procedures for preventing harm to people or the environment. If you want to submit a complaint electronically, you can email the CAO at CAO@worldbankgroup.org You can learn more about the CAO and how to file a complaint at http://www.cao-ombudsman.org

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How it works