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US: Holcim US has announced plans for a 25MW solar power plant to serve 75% of the electricity needs of its Alpena cement plant in Michigan. The company says that the installation at the Alpena plant will be the largest in the US Midwest Region. Holcim US chose NorthStar Clean Energy to build the array, which it says will eliminate 25,000t/yr of CO₂ emissions.

Other planned projects at the Alpena cement plant include an upgrade to the plant's dock in order to accommodate larger vessels and reduce the number of trips in its Great Lakes transport operations.

Holcim US' senior vice president, manufacturing, Michael Nixon said “As Holcim is showing in Alpena, the path to net-zero carbon emissions requires a blend of proactive solutions. Whether it’s using alternative fuels or implementing renewable energy from solar power, we are committed to reducing our reliance on fossil fuels — a goal that will benefit the environment as a whole and the Alpena community we have called home for more than 115 years.”

Chile: Cemento Polpaico plans to invest US$67m in expanding its operations, with a focus on its Cerro Blanco cement plant in Santiago. Work will include the construction of a solar power plant and the expansion of the plant's limestone quarry. Meanwhile, Cemento Polpaico will upgrade the plant's kiln to increase its alternative fuel (AF) substitution rate to 75% from 13%. The upgrade will increase the production line's clinker capacity by 13% and reduce its CO₂ emissions by 20,000t/yr. Additionally, the producer will build a new 3000t cement silo.

Argentina: Holcim Argentina has commissioned its new 120,000t/yr mortar plant at its Malagueño cement plant in Córdoba. The plant cost US$5m to build. It is equipped with six 100t raw material silos and eight 1t additive silos. It also has a 2000l mixer, three packing machines and an automated palletiser. Holcim Argentina says that the plant will produce its Tector Adhesive and Tector Revoques ranges of mortar.

Holcim Argentina chief executive officer Christian Dedeu said “This new plant is aligned with our purpose of generating progress for people and the planet, accompanied by a diversification of our product portfolio. It consolidates us as the leading company in innovative solutions for construction.”

Cement producers in Bangladesh received a surprise at the start of June 2023 when the government budget proposed increasing the duty on imported clinker. The Bangladesh Cement Manufacturers Association (BCMA) reacted this week by calling for the duty on clinker to be reduced, while also calling for the same for a non-adjustable advance income tax (AIT) applied to associated imports and sales.

During a press conference, reported upon by the Financial Express newspaper and other media, BCMA president Alamgir Kabir said that the customs duty on key raw materials for the sector had previously been around 5% of the import value. However, he argued that the new suggested increased tariff was “disproportionate” because it placed the burden at 12 - 13%. He urged the government to treat the cement sector as a "priority sector" given that it was facing higher prices generally due to the aftermath of the Covid-19 pandemic, the energy shocks from the Russian invasion of Ukraine and negative currency exchange effects.

The BCMA’s latest lobbying call may sound familiar because it follows a similar battle against import charges from late 2022. A supplementary duty was introduced in November 2022 when the National Board of Revenue (NBR) changed the way limestone was coded in response to a significant increase in imports from 2020. At the time, the price of limestone imports reportedly nearly doubled. The BCMA may have won this battle because in March 2023 the NBR withdrew its supplementary duty. It did require that importers submit to further scrutiny including an updated Import Registration Certificate and various tax related requirements.

The timing of the NBR’s decision to relax the limestone duty is telling given that the previous month or so six of the country’s seven publicly listed cement producers reported either falling profits or losses for the second half of 2022 or the year as a whole. Only LafargeHolcim Bangladesh bucked the trend with an increase year-on-year in its annual profit after tax in 2022, although it attributed this to 95% volume growth in its aggregates business.

As discussed previously a characteristic of the cement sector in Bangladesh is that the country has no domestic limestone reserves. It all has to be imported. Arusha Ahmed Khan, Shun Shing Group presented a summary of the national industry at the Global Slag Conference that took place in early June 2023 in Düsseldorf. The country has two integrated cement plants and 36 grinding mills operated by 31 companies with a total capacity of 84Mt/yr. At present around 14Mt/yr of new cement grinding production capacity is planned by UK Bangla Cement, MI Cement, Confidence Cement and Dubai Bangla with commissioning dates expected from mid-2023 to mid-2025. Khan revealed that the government switched from British to European standards in the early 2000s leading to a high level (95%) of blended cements on the market. Use of slag cements has grown as more producers commission vertical roller mills and more uptake of slag and other blended cements using secondary cementitious materials (SCM) is expected in the future.

A key vulnerability for a grinding-heavy cement sector, like the one in Bangladesh, is any burden on imports such as logistic costs, currency exchange effects and government tariffs. Sure enough each of these examples has been reported locally. The government says that its proposed higher import tariff on clinker is the first such change in a decade. Cement producers have reacted, predictably, in a negative manner. Whether the authorities go ahead with the planned increase and how well the cement sector could absorb it remains to be seen. There may never be a good time for a tax rise but the BCMA has been able to present the current period as being especially bad.

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India: JK Lakshmi Cement says that it will invest US$201m in its on-going upgrade to its Udaipur cement plant. When commissioned before April 2024, the upgraded plant will have an integrated capacity of 1.5Mt/yr, and an additional grinding capacity of 1Mt/yr. The Hindu BusinessLine newspaper has reported that the project will help to raise JK Lakshmi’s capacity to 18Mt/yr.

Over the six-year period up to the end of the 2030 financial year on 31 March 2030, JK Lakshmi Cement plans to invest US$972m in growth. This will include both capital expenditure (CAPEX) and acquisitions of new capacity. Planned CAPEX projects include the construction of two new plants, at Kutch in Gujarat and Nagaur in Rajasthan. The producer said that the planned plants will strengthen its position in the West India market. As a result of its investments, JK Lakshmi says that it will become a top-10 Indian cement producer by 2030.

UK: Cemcor has installed a new US$7.54m bag filter at its Cookstown cement plant in County Tyrone. The system will detect signs of bag damage and isolate the affected row of bags for either online maintenance or, if the damage is minor, resealing with process dust.

The Irish News has reported that managing director David Millar said “We are forward thinking at Cemcor and understood it was time to put our money on the line and invest in the plant's efficiencies and sustainable outputs, to protect the environment around us and future-proof the plant itself."

North Korea: State-owned Cheonnaeri Cement has completed a successful upgrade to its 1Mt/yr Cheonae cement plant in South Hamgyong Province. Korean News has reported that the upgrade involved the replacement of the plant's clinker cooler, burners and clinker and raw materials handling systems. A new bucket conveyor has more than doubled raw materials handling capacity.

Cheonnaeri Cement reportedly plans to further expand the capacity of the plant.

Uzbekistan: Bekabadcement is carrying out a 'large-scale' upgrade to its 0.7Mt/yr Bekabadcement plant in Tashkent Region. The producer said that the upgrade involves a 20% capacity expansion of the plant's production line to 2500t/day. Austria-based Unitherm CemCon supplied burners for the upgraded line, while China-based Beijing Triumph International Engineering supplied heat exchanger components and a KC 4.1-0955 cooler. The upgrade also involves the installation of new kiln lining, and will transition the plant's cement production from wet to dry process. Germany-based Christian Pfeiffer previously upgraded the Bekabad cement plant's grinding unit in April 2023.

General director Vasily Korobkin "We see that (parent company) United Cement Group (UCG) is interested in the modernisation and development of the enterprise. The group adheres to international standards, so all plans for the development of the plant are built accordingly." He concluded "We expect to become a modern and successful enterprise in Uzbekistan which is capable of becoming a major player in the cement industry of Central Asia.”

Canada: The district council of Capital Regional District (CRD) says that it expects to resume sending biosolids to Lafarge Canada's Richmond cement plant in early June 2023. This follows a reported reduction in production at the unit in 2023 and 2022, according to the Times Colonist newspaper. The 1.1Mt/yr cement plant previously used biosolids supplied by the CRD as an alternative fuel in its cement production. However, during the current hiatus the biosolids have been sent to landfill instead.

The Richmond cement plant is the site of the CO₂MENT carbon capture and utilisation project. The project proceeded to its third phase, which consists of a capture capacity expansion and the installation of a liquefaction plant, in May 2023.

Heidelberg Materials North America held an official opening ceremony this week for its upgraded slag cement plant and terminal at Cape Canaveral in Florida. The US$24m project added a new roller press to the unit to increase its production capacity. In a statement Chris Ward, the president and chief executive officer of the company, said that it had made the investment to meet sustainability and resilient construction goals. Industrial Accessories Company (IAC) said in mid-2021 that it had been named as the engineering, procurement, and construction (EPC) contractor for the project. It planned to install a hydraulic roller press supplied by FLSmidth. IAC also said it was providing instrumentation equipment, hoppers, bins, belt conveyors, bucket elevators and dust collectors amongst other kit and services.

Other recent US slag cement-related news stories have concerned terminals. In late August 2022 Royal White Cement said it had leased a site on the Houston Ship Channel in Houston, Texas to handle and store approximately 100,000t of multiple cementitous products such as slag, ordinary Portland cement and white Cement. In May 2022 Titan America announced plans to spend US$37m on an upgrade to its Norfolk terminal in Chesapeake, Virginia. The major improvement was to add a 70,000t storage dome, with enlarged truck and railway capacity, to allow the site to import and distribute raw materials such as fly ash, slag and aggregates. Completion on this one was scheduled for some point in 2023. Titan added that the project was similar to the addition of a 70,000t dome under construction at the time at Titan's import terminal in Tampa, Florida.

The United States Geological Survey (USGS) estimates that domestic sales of iron and steel (ferrous) slags in the US amounted to 15Mt in 2022. Sales were around 20Mt in the 2000s but this fell to current levels in the 2010s as blast furnaces closed. In 2022 the USGS noted that, “domestic ground granulated blast furnace slag (GGBFS) remained in limited supply because granulation cooling was known to be available at only two active US blast furnaces while, elsewhere, only one domestic plant produced pelletised slag in limited supply.” It added that the grinding of granulated blast furnace slag was only being carried out domestically by cement companies. Imports of slag were 2Mt in 2022. This is a decline from a peak of 2.6Mt in 2018 but higher than the period 2000 – 2015. The price of slag, meanwhile, hit a high of US$53/t in 2022. This is the highest price recorded by the USGS since at least 2000. It is double that of 2017.

Charles Zeynel of ZAG International noted in the June 2023 issue of Global Cement Magazine that cement producers in Florida, California, Texas, Georgia and the Carolinas are far from steel mills, so they import granulated blast furnace slag (GBFS) and other secondary cementitious materials (SCM). This certainly fits with Heidelberg Materials’ plan to upgrade its slag cement plant and terminal at Cape Canaveral. Also on the US market, Zeynel added that due to rising global demand for SCMs more of the available share of GBFS was being purchased by ‘richer’ markets such as Europe, North America and Australia. He continued that GBFS and GGBFS producers had also started increasing the price of their wares internationally. This too is apparent in the prices published by the USGS.

One final story with links to slag to note this week concerns the launch of the Alliance for Low-Carbon Cement & Concrete (ALCC) in Europe. The group brings together companies producing products or services intended to decarbonise the cement and concrete sectors. Two of the members – Ecocem and Hoffman Green Cement Technologies – are Europe-based slag cement producers. Two other members – Fortera and TerraCO₂ – are companies based in North America that are marketing and selling low-carbon SCMs.

Various start-up companies have been emerging on a regular basis in both North America and Europe with the aim of decarbonising cement and concrete in various different ways. The formation of the ALCC can be seen as part of this trend as the more successful non-traditional cement-concrete-aggregate companies establish themselves. One point that cement producers in North America are likely to be well aware of is that concrete is becoming less linked to clinker as the cost of carbon mounts and the clinker factor of cement lowers. Slag supplies may be finite but Heidelberg Materials North America’s latest investment in Florida is further acceptance that one doesn’t just need clinker to make concrete.

Read Charles Zeynel’s interview on SCM Trends in 2023 in the June 2023 issue of Global Cement Magazine

The 15th Global Slag Conference, Exhibition & Awards take place on 6 - 7 June 2023 in Düsseldorf, Germany