Viw Magazine

Men's Weekly

.

  • Written by Dominique Hes, Senior Lecturer in Sustainable Architecture, University of Melbourne
Shutterstock

Despite a wealth of evidence to the contrary, some still propagate the myth that the world will need Australian coal for decades to come. Last weekend Opposition Leader Anthony Albanese joined in, saying thermal and metallurgical coal mining and exports would continue after 2050, even with a net zero emissions target.

Metallurgical coal (or “coking coal”) is mined to produce the carbon used in steelmaking, while thermal coal is used to make steam that generates electricity.

Albanese argues there’s no replacement for metallurgical coal, but this is not the case. The assertion stems from a fundamental misunderstanding of modern steelmaking, and places Australian manufacturers at risk of missing out on massive opportunities in the global shift to a low-carbon economy.

Just as thermal coal can be replaced with clean energy from renewables, we can use low-emissions steel manufacturing to phase out metallurgical coal.


Read more: Labor’s climate policy is too little, too late. We must run faster to win the race


The problem with steel

Steel is the second-most polluting industrial material in the world after cement, causing 7-9% of global emissions.

Australia manufactures a relatively small amount of steel – 5.3 million tonnes, or 0.3% of world output. Yet, we’re one of the biggest exporters of raw materials for steel production.

There is potential to not only strengthen Australia’s steel manufacturing industry, but also to grow it using the ore (rock containing metals like iron) we currently export and our extensive renewable energy sources.

Doing so would work to our manufacturing strengths, history, abundant resources, and would cater to the future low-carbon market that will still require steel.

There are a few ways we can do this.

Recovering waste

Seventy-two per cent of the world’s virgin steel (steel made from ore, not from recycled material) is created from a high emissions manufacturing process – via the integrated steel-making route. This involves a blast furnace and a basic oxygen furnace, using coal, coke, iron ore and gas.

We can replace the coal and coke with rubber tyres that would otherwise end up in landfill, as shown by University of NSW’s Professor Veena Sahajwalla, who dubbed this process “green steel”.


Read more: Stemming the tide of trash: 5 essential reads on recycling


Right now we can also boost the recovery of steel from landfills in greater percentages. According to a 2018 national waste report, Australia generated an estimated 67 million tonnes of waste in 2016-17.

Steel makes up 2.5% of this. That’s more than 1.5 million tonnes, enough to build 150,000 buses.

‘Direct reduction’ from renewable hydrogen

But the best way to reduce emissions in steel manufacturing is to shift to “direct reduction”. This process produces more than 60 million tonnes of primary steel each year.

And almost 50 plants around Australia already make steel this way. It results in 40% lower greenhouse gas emissions, while supporting a viable and thriving manufacturing industry, which uses our own raw materials rather than exporting them.


Read more: Enough ambition (and hydrogen) could get Australia to 200% renewable energy


Here’s how it works. Direct reduction removes the oxygen in ore, which produces metallic iron. The chemical reaction that drives this process uses carbon monoxide and hydrogen, sourced from greenhouse gases – reformed natural gas, syngas or coal.

But there’s no reason these fossil fuels can’t be entirely replaced with renewable hydrogen in the near future.

We’ve seen this from two leading direct-reduction technologies, called Midrex and Energiron. Both use fossil fuels, but also with a high proportion of hydrogen. In fact, Energiron facilities can already use up to 70% hydrogen, and they’ve also trialled 100% hydrogen.

The source of this hydrogen is critical, it can be made from fossil fuels, or it can be made using renewable energy.


Read more: For hydrogen to be truly 'clean' it must be made with renewables, not coal


At least five companies in Europe are also working on producing low emissions steel. What’s more, three companies (SSAB, LKAB and Vattenfall) are collaborating to progress the technology, creating the “world’s first fossil-free steel-making technology, with virtually no carbon footprint” – called the “HYBRIT system”.

In fact, SSAB recently announced they’re bringing their plans forward to will produce fossil-free steel by 2026.

A new Aussie industry

The key message is this: it is possible to create low-emissions steel, without metallurgical coal. And it is already happening.

With the support of industry and government, non-metallurgical, low-emissions steel could provide an opportunity to create jobs, develop a decarbonised industry and extend the steel market’s contribution to Australia’s economy.

Not to mention what products we can produce from the steel – adding value in many more ways than just exporting ore – and taking advantage of an increasing consumer demand for low carbon products. This is especially relevant for communities transitioning away from fossil fuels.

There’s not much stopping low-emissions steel from forming a core new Australian industry. Australia must address the costs involved in transitioning the infrastructure, to upgrade plants and processes.

But it needs to start with working from facts – and effective government support and vision.


Read more: How hydrogen power can help us cut emissions, boost exports, and even drive further between refills


Dominique Hes is affiliated with Beyond Zero Emissions.

Authors: Dominique Hes, Senior Lecturer in Sustainable Architecture, University of Melbourne

Read more https://theconversation.com/albanese-says-we-cant-replace-steelmaking-coal-but-we-already-have-green-alternatives-126599

Designing the Ideal Healthcare Environment with a Professional Medical Centre Fitout

When it comes to healthcare spaces, functionality, hygiene, and patient comfort take top priority. An intelligently designed medical centr...

Stay Comfortable Year-Round with Ducted Cooling Melbourne

When the temperature starts to rise, having a reliable and efficient cooling system becomes a priority. With unpredictable weather and sud...

Best Practices for Content Ownership and Tagging Across Departments

Image by kaboompics on Freepik The bigger and more complex content ecosystems grow, the more valuable ownership and tagging become. In ent...

Understanding Public Liability Insurance Australia: What You Need to Know

Image by rawpixel.com on Freepik The necessity of public liability insurance in Australia is that it acts as a financial safeguard for busi...

How HID Proximity Cards Improve Workplace Security Without Slowing Down Access

In today’s workplaces, security is non-negotiable, but so is speed. Companies are under pressure to protect their people, property, and ...

Unlock Business Insights Faster with Power BI Tools

In this digital age where data drives the consumer landscape, businesses are shipping huge amounts of data every day. To remain competit...

Why Split System Installation Is a Smart Choice for Home Climate Control

Temperature control is essential for comfort, and when it comes to efficient, versatile cooling and heating, a split system is one of the ...

The Ultimate Guide to Door Replacement: Everything You Need to Know

Image by freepik Sure, swapping out a door is a fairly easy task, but it requires careful consideration of options for materials, designs...

Common Web Development Issues Perth Businesses Face (and How Agencies Fix Them)

Image by freepik Let's be honest, in the bustling heart of Perth's business scene, a website that's not up to scratch is like trying to he...

Life With Clear Aligners: 10 Small Changes That Make a Big Difference

Image by tonodiaz on Freepik Clear aligners have transformed orthodontics, offering a nearly invisible way to straighten teeth without the...

Choosing the Right Hair Loss Treatment for Your Needs

Millions of people experience hair loss globally, and it can be a major cause of emotional discomfort and self-consciousness. Hair loss ca...

Cardboard Display Boxes: An Effective Solution for Retail Presentation

In the competitive world of retail, how products are presented can be just as important as the products themselves. Cardboard display boxe...

Why Hiring a Skilled Shopify Web Developer Can Transform Your Online Store

Shopify has become one of the most popular e-commerce platforms due to its ease of use, powerful features, and scalability. However, creat...

Selling a Home Left 1 in 3 Aussies in Tears, Survey Finds

New research on selling property found that more than 1 in 3 people who sold a property in the past two years admitted to crying at some poi...

Brisbane Motor Vehicle Accident Lawyers & Motorbike Accident Claims

Motorbike accidents in Brisbane can lead to severe injuries and complex legal challenges, given the vulnerability of riders on the road. F...

Jesse Martin, OAM Sets Sail Again with Portland Roads - Sailing the Whitsundays

Jesse Martin OAM shot to fame in 1999 as the world’s youngest sailor to circumnavigate the globe – solo, unassisted and non-stop. No...

Why Modern Roller Shutters Are the Perfect Solution for Your Home or Business

Whether you're looking to secure your home or make your business more energy-efficient, modern roller shutters are a smart choice. In this...

Everything You Need to Know About the EWPA Yellow Card

The EWPA Yellow Card is an important certification in the construction and workplace safety sectors. It plays a key role in ensuring worke...

From Residential to NDIS to Commercial: How Mr Window Cleaning Covers Every Window

Not all window cleaning jobs are created equal. A quiet suburban home, a bustling retail store, and a property under an NDIS plan each com...

How Timely Duct Inspections and Repairs Improve HVAC Efficiency

You have cranked up the air conditioning, but your home still feels unevenly cooled or stuffy. Sound familiar? Many homeowners jump straig...