Tag Archives: low-carbon steel

BHP and HBIS Group exploring alternate electrified pathways of steel production

Environmental, Mineral processing, Steel and iron ore, , , , , , , , , ,

BHP has signed an agreement with China’s HBIS Group Co Ltd (HBIS), one of the world’s largest steelmakers, to trial direct reduced iron (DRI) production and use of BHP iron ores in blends and progress a separate enhanced lump stage 2 trial aimed at lowering blast furnace (BF) carbon emissions.

To support the development of alternate electrified pathways of steel production for a wider range of iron ores, under this new agreement, the parties aim to trial commercial-scale DRI production using BHP iron ores in blends at HBIS’s newly commissioned DRI plant and then evaluate the performance of the DRI in downstream steelmaking steps. The DRI plant uses hydrogen-rich gas by-products in the steel works to convert ore into a metallic iron product that is further refined for steel.

Additionally, the enhanced lump stage 2 trial will focus on the existing BF steelmaking route, with the aim of reducing carbon emissions by increasing the use of direct charge lump and reducing the need for agglomerated feed which requires fossil fuel energy.

BHP’s latest collaboration agreement with HBIS will tap into the investment of up to $15 million over three years proposed by BHP and HBIS in an earlier Memorandum of Understanding (MoU) signed in 2021.

BHP’s Chief Executive Officer, Mike Henry, said: “HBIS Group is a key partner to BHP and an industry leader in assessing and demonstrating a range of potential pathways to reduce GHG in steelmaking. Our work with customers like HBIS Group, together with our own actions, aims to accelerate progress in reducing greenhouse gas emissions right along the value chain.”

BHP’s Chief Commercial Officer, Vandita Pant, said: “I am delighted to build on our existing partnership with HBIS Group, one of the world’s largest steelmakers and an important customer for BHP’s high quality Pilbara iron ores. DRI is an important element of our pathways to near-zero-emission steel production and in the decarbonisation journey of the steel industry.

“We are working with HBIS Group to demonstrate the use of BHP iron ores in DRI production trials. Together with other collaborations we have underway, including electric smelting furnace (ESF) development, the outcomes are expected to provide pathways to reduce carbon emissions from steel production using BHP’s products.”

This new agreement expands on the work streams laid out in the 2021 MoU between the parties and proceeding announced since; phase 1 research and development work announced in 2022 – in conjunction with HBIS and University of Science and Technology Beijing, a recently completed enhanced lump stage 1 trials at one of HBIS’s plants in Hebei province, and the most recent CCUS pilot trials announced in March this year.

HBIS Chairman, Yu Yong, said: “HBIS and BHP are aligned in their aims to help develop greener, low-carbon solutions that can reduce emissions in steelmaking, leveraging on our long-standing and trusted relationship that we have forged over several years. The agreement signed today is another landmark following our substantive cooperation in areas such as CCUS, and highlights HBIS’s efforts to build a low-carbon raw material supply chain.

“HBIS looks forward to strengthening our comprehensive strategic synergy with BHP in the sustainable development of steel in the years ahead.”

Rio Tinto and Uni of Nottingham partner on biomass-backed low-carbon steelmaking project

Environmental, Mineral processing, Mining industry recognition, Mining services, Power supply for mines, Steel and iron ore, Sustainable mining, , , , , , , ,

Rio Tinto says it is progressing an innovative new technology to deliver low-carbon steel, using sustainable biomass in place of coking coal in the steelmaking process, in a potentially cost-effective option to cut industry carbon emissions.

Over the past decade, Rio Tinto has developed a laboratory-proven process that combines the use of raw, sustainable biomass with microwave technology to convert iron ore to metallic iron during the steelmaking process. The patent-pending process, one of a number of avenues the company is pursuing to try to lower emissions in the steel value chain, is now being further tested in a small-scale pilot plant.

If this and larger-scale tests are successful, there is the potential over time for this technology to be scaled commercially to process Rio Tinto’s iron ore fines, Rio said.

Rio Tinto Iron Ore Chief Executive, Simon Trott, said: “We are encouraged by early testing results of this new process, which could provide a cost-efficient way to produce low-carbon steel from our Pilbara iron ore. More than 70% of Rio Tinto’s Scope 3 emissions are generated as customers process our iron ore into steel, which is critical for urbanisation and infrastructure development as the world’s economies decarbonise. So, while it’s still early days and there is a lot more research and other work to do, we are keen to explore further development of this technology.”

Rio Tinto’s process uses plant matter known as lignocellulosic biomass, instead of coal, primarily as a chemical reductant. The biomass is blended with iron ore and heated by a combination of gas released by the biomass and high efficiency microwaves that can be powered by renewable energy.

Rio Tinto researchers are working with the multi-disciplinary team in the University of Nottingham’s Microwave Process Engineering Group to further develop the process.

The university’s Head of Department, Chemical and Environmental Engineering, Professor Chris Dodds, said: “It is really exciting to have the opportunity to be part of a great team working on a technology that, if developed to commercial scale, has the potential to have a global impact through decarbonising key parts of the steel production process.”

The use of raw biomass in Rio Tinto’s process could also avoid the inefficiencies and associated costs of other biomass-based technologies that first convert the biomass into charcoal or biogas, the company said.

Lignocellulosic biomass includes agriculture by-products (ie wheat straw, corn stover, barley straw, sugar cane bagasse) and purpose-grown crops, which would be sustainable sources for the process. Importantly, the process cannot use foods such as sugar or corn, and Rio Tinto says it would not use biomass sources that support logging of old-growth forests.

Trott added: “We know there are complex issues related to biomass sourcing and use and there is a lot more work to do for this to be a genuinely sustainable solution for steelmaking. We will continue working with others to understand more about these concerns and the availability of sustainable biomass.”

If developed further, the technology would be accompanied by a robust and independently accredited certification process for sustainable sources of biomass, Rio said.