Displaying items by tag: Queensland

In Australia and New Zealand, four producers operate a total of six integrated cement plants, with another 13 grinding plants situated in Australia. This relatively small regional cement industry has been on a decades-long trajectory towards ever-greater sustainability – hastened by some notable developments in recent weeks.

Oceania is among the regions most exposed to the impacts of climate change. In Australia, which ranked 16th on the GermanWatch Global Climate Risk Index 2021, destructive changes are already playing out in diverse ways.¹ Boral reported 'significant disruption' to its operations in New South Wales and southeast Queensland due to wet weather earlier in 2022. This time, the operational impact was US$17.1m; in future, such events are expected to come more often and at a higher cost.

Both the Australian cement industry and the sole New Zealand cement producer, Golden Bay Cement, have strategies aimed at restricting climate change to below the 2° scenario. Golden Bay Cement, which reduced its total CO₂ emissions by 12% over the four-year period between its 2018 and 2022 financial years, aims to achieve a 30% reduction by 2030 from the same baseline. The Australian Cement Industry Federation (CIF)'s 2050 net zero cement and concrete production roadmap consists of the following pathways: alternative cements – 7%; green hydrogen and alternative fuels substitution – 6%; carbon capture – 33%; renewable energy, transport and construction innovations – 35% and alternative concretes – 13%, with the remaining 6% accounted for by the recarbonation of set concrete.

Australia produces 5.2Mt/yr of clinker, with specific CO₂ emissions of 791kg/t of clinker, 4% below the global average of 824kg/t.² Calcination generates 55% of cement’s CO₂ emissions in the country, and fuel combustion 26%. Of the remainder, electricity (comprising 21% renewables) accounted for 12%, and distribution 7%. Australian cement production has a clinker factor of 84%, which the industry aims to reduce to 70% by 2030 and 60% by 2050. In New Zealand, Golden Bay Cement's main cement, EverSure general-purpose cement, generates CO₂ at 732kg/t of product.³ It has a clinker factor of 91%, and also contains 4% gypsum and 5% added limestone.

Alternative raw materials

Currently, Australian cement grinding mills process 3.3Mt/yr of fly ash and ground granulated blast furnace slag (GGBFS). In Southern Australia, Hallett Group plans to commission its upcoming US$13.4m Port Augusta slag cement grinding plant in 2023. The plant will use local GGBFS from refineries in nearby Port Pirie and Whyalla, and fly ash from the site of the former Port Augusta power plant, as well as being 100% renewably powered. Upon commissioning, the facility will eliminate regional CO₂ emissions of 300,000t/yr, subsequently rising to 1Mt/yr following planned expansions. Elsewhere, an Australian importer holds an exclusive licencing agreement for UK-based Innovative Ash Solutions' novel air pollution control residue (APCR)-based supplementary cementitious material, an alternative to pulverised fly ash (PFA), while Australian Graphene producer First Graphene is involved in a UK project to develop reduced-CO₂ graphene-enhanced cement.

Golden Bay Cement is investigating the introduction of New Zealand's abundant volcanic ash in its cement production.

Fuels and more

Alternative fuel (AF) substitution in Australian cement production surpassed 18% in 2020, and is set to rise to 30% by 2030 and 50% by 2050, or 60% including 10% green hydrogen. In its recent report on Australian cement industry decarbonisation, the German Cement Works Association (VDZ) noted the difficulty that Australia's cement plants face in competing against landfill sites for waste streams. It described current policy as inadequate to incentivise AF use.

Cement producer Adbri is among eight members of an all-Australian consortium currently building a green hydrogen plant at AGL Energy’s Torrens Island gas-fired power plant in South Australia.

Across the Tasman Sea, Golden Bay Cement expects to attain a 60% AF substitution rate through on-going developments in its use of waste tyres and construction wood waste at its Portland cement plant in Northland. The producer will launch its new EcoSure reduced-CO₂ (699kg/t) general-purpose cement in November 2022. In developing EcoSure cement, it co-processed 80,000t of waste, including 3m waste tyres. The company says that this has helped in its efforts to manage its costs amid high coal prices.

Carbon capture

As the largest single contributor in Australia's cement decarbonisation pathway, carbon capture is now beginning to realise its potential. Boral and carbon capture specialist Calix are due to complete a feasibility study for a commercial-scale carbon capture pilot at the Berrima, New South Wales, cement plant in June 2023.

At Cement Australia's Gladstone, Queensland, cement plant, carbon capture is set to combine with green hydrocarbon production in a US$150m circular carbon methanol production facility supplied by Mitsubishi Gas Chemical Company. From its commissioning in mid-2028, the installation will use the Gladstone plant's captured CO₂ emissions and locally sourced green hydrogen to produce 100,000t/yr of methanol.

More Australian cement plant carbon capture installations may be in the offing. Heidelberg Materials, joint parent company of Cement Australia, obtained an indefinite global licence to Calix's LEILAC technology on 28 October 2022. The Germany-based group said that the method offers effective capture with minimal operational impact.

Cement Australia said “The Gladstone region is the ideal location for growing a diverse green hydrogen sector, with abundant renewable energy sources, existing infrastructure, including port facilities, and a highly skilled workforce." It added "The green hydrogen economy is a priority for the Queensland government under the Queensland Hydrogen Industry Strategy.”

Logistics

Australian and New Zealand cement facilities' remoteness makes logistics an important area of CO₂ emissions reduction. In Australia, cement production uses a 60:40 mix of Australian and imported clinker, while imported cement accounts for 5 – 10% of local cement sales of 11.7Mt/yr.

Fremantle Ports recently broke ground on construction of its US$35.1m Kwinana, Western Australia, clinker terminal. It will supply clinker to grinding plants in the state from its commissioning in 2024. Besides increasing the speed and safety of cement production, the state government said that the facility presents 'very significant environmental benefits.'

Conclusion

Antipodean cement production is undergoing a sustainability transformation, characterised by international collaboration and alliances across industries. The current structure of industrial and energy policy makes it an uphill journey, but for Australia and New Zealand's innovating cement industries, clear goals are in sight and ever nearer within reach.

References

1. Eckstein, Künzel and Schäfer, 'Global Climate Risk Index 2021,' 25 January 2021, https://www.germanwatch.org/en/19777

2. VDZ, 'Decarbonisation Pathways for the Australian Cement and Concrete Sector,' November 2021, https://cement.org.au/wp-content/uploads/2021/11/Full_Report_Decarbonisation_Pathways_web_single_page.pdf

3. Golden Bay Cement, 'Environmental Product Declaration,' 12 May 2019, https://www.goldenbay.co.nz/assets/Uploads/d310c4f72a/GoldenBayCement_EPD_2019_HighRes.pdf

Australia: Cement Australia’s Gladstone cement plant in Queensland will host a study of methanol production from green hydrogen and captured CO₂. Japan-based Mitsubishi Gas Chemical Company will supply its green methanol production technology, while hydrogen and oxygen feedstocks will be sourced locally. Cement Australia and Mitsubishi Gas Chemical Company will collaborate on commercialisation of their green methanol. Cement Australia said that carbon capture and its utilisation in value added products is a strategic pillar of the company’s decarbonisation roadmap.

The cement producer said “The Gladstone region is the ideal location for growing a diverse green hydrogen sector, with abundant renewable energy sources, existing infrastructure, including port facilities, and a highly skilled workforce. The green hydrogen economy is a priority for the Queensland government under the Queensland Hydrogen Industry Strategy.”

Australia: Boral has updated the market that ‘exceptional’ wet weather on the East coast of Australia ‘significantly’ disrupted its New South Wales and South East Queensland operations in February and early March 2022. The Australian newspaper has reported that CEO Zlatko Todorcevski has forecast that the disruption to cement production and deliveries will have a negative impact of US$17.1m on the producer’s earnings in the first quarter of 2022. Coal and diesel costs have also risen ‘sharply’ so far in the quarter, to partly offset which the company has raised its cement prices. It now forecasts full-year earnings from continuing operations, excluding property, of US$108 – 115m.

Australia/UK: InterGroup Mining has secured just under Euro60m from Luxembourg-based investment group GEM Global Yield as part of a share subscription facility. The Australia-based mining company says it will use the funds primarily for the ongoing development and commercialisation of its Brilliant Brumby kaolin and gold project in Queensland. The company hopes to sell the kaolin for use in cement and concrete production or as a feedstock for high purity alumina (HPA). It says it will be able to drawdown the funds over a 36-month term following a public listing of its common stock.

Neil Miller, the chairman of InterGroup said, “The GEM facility provides a major accelerator for InterGroup as we continue to prove up the scale of our Brilliant Brumby project and the optimal development path for the co-mining opportunity of kaolin and gold. It likewise enables us to continue our important research and development work into the new carbon reduction markets of potential scale that our minerals serve and which complement their existing known end markets.” InterGroup is currently working towards a potential stock market flotation in the second half of 2021.

The Queensland state government in Australia took a blunt approach to health and safety earlier this month when a report it commissioned said that it expected 12 deaths to occur in the mines and quarries sector over the next five years unless changes were made. This is far removed from the usual news stories that industry magazines like Global Cement and others cover. Typically, these are either plants or companies reaching Lost Time Injury (LTI) milestones or sad (but thankfully rare) reports of death.

The forecast in Queensland was based on a review of fatalities in the sector that the state commissioned from Sean Brady, Department of Natural Resource, Mines and Energy, looking at the years 2000 to 2019. Year-by-year the figures were significantly lower than those occurring in the 1900 to 2000 period but didn’t appear to have any discernable pattern. However, when presented as a 12-month rolling sum of fatalities, a two to three year cycle seemed to occur. Brady then went on to look at how the fatalities happened, how the industry behaved and reacted and what could be done to improve the situation. His recommendations included looking more deeply at the causes of seemingly unrelated accidents and then changing overall organisational behaviour and insight through methods such as adopting principles of High Reliability Organisational theory, simplifying the reporting system and changing the standard safety indicators like LTI.

That last point is interesting given the prevalence of LTI indicators on corporate sustainability reports in the cement industry. The point that Brady cites here is that LTI can become a measure of how well injuries are managed, not how safely an organisation is performing. For example, the definition of what an injury is can be manipulated, leading to distortion, as can workers being brought back to work before they recover or into lighter duties. Instead he recommends that ‘serious accidents’ be used in place of LTI. These are defined as incidents that result in a fatality or incidents where an individual requires admission to hospital for treatment of an injury. The preference here is based on so-called ‘serious accidents’ being unambiguous and transparent because they are defined by a third-party medical practitioner.

Wider critiques of health and safety measurements have identified under-reporting of incidents arising from safety incentive programmes, safety culture, employee perceptions of reporting and workplace bullying. This isn’t to say that the LTI measure is not fit for purpose. It has undoubtedly led to higher safety conditions around the world, with reduced injury and mortality from working conditions, and it allows for comparisons between organisations. Yet, any health and safety metric or indicator could be liable to bias or manipulation either unconsciously or consciously. Serious accidents, for example, could be potentially undermined by an organisation having its own medical centre and would also suffer from different health care systems in different locations. Throw in different legislative frameworks around the world and comparing countries can also start to become confusing.

This tension between data and real-life safety is acknowledged by the Global Cement and Concrete Association (GCCA) in its sustainability guidance from late 2018. It distinguishes between so-called ‘lagging’ indicators, like LTI and fatalities, which show the effectiveness of a safety programme after the fact and the importance of continual safety improvement plans that aim to prevent adverse events before they happen. It is easy to become lost in a dust storm of facts and figures on health and safety but, as the Queensland authorities and the GCCA agree, measuring health and safety is a means to an end. The aim is zero harm to everyone involved.

Australia: An initial public offering by Wagners has been threatened from plans by a rival company to build a cement grinding plant and terminal in Brisbane, Queensland. Wagners operates its own 0.8Mt/yr grinding plant in the city and commentators mentioned by The Australian newspaper have speculated that this increased competition locally could damage its aspirations. However, Wagners believes that the new plant is unlikely to be built. The 0.2Mt/yr project from brick and tile maker Brickworks, in a consortium with Newman Quarrying and the Neilsen Group, remains in the planning stage.