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Update on slag in the US, May 2023
31 May 2023Heidelberg 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.
US: Swede-based Bruks Siwertell has received a conveyor system order for use at the integrated Capitol Aggregates cement plant in San Antonio, Texas. The order has been placed by Borton, a construction company.
Three new conveyor systems will modify the site’s existing material transport system and the addition of a new storage silos. They are all standard widths of 91cm. The C-810 type conveyor will be 148m in length and will transfer clinker to a bucket elevator at a rated capacity of 150t/hr. The 84m long C-940 type conveyor will have a rated capacity of 200t/hr and will transfer clinker to the silo reclaim, while the C-975 type conveyor will be 40m long and connect to an existing conveyor. It will also have a rated capacity of 200t/hr.
The conveyors are being fabricated in Mexico and will be delivered to the operator later in 2023.
Alamo Cement launches solar power unit in Texas
03 March 2023US: Alamo Cement has completed a new solar power unit that supports its integrated cement plant in San Antonio, Texas. The unit has a capacity of 17,800MWhr and is situated on an 18 hectare site. It is expected to generate up to 15% of the plant’s annual power consumption and reduce electricity costs.
DG Khan Cement despatches cement to the US
19 January 2023Pakistan: DG Khan Cement despatched its second cement shipment to the US on 18 January 2023. The shipment consisted of 37,500t of low-alkali cement, and is part of an order for 600,000t. The Business Recorder newspaper has reported that DG Khan Cement previously shipped 50,000t to the US in June 2022. The latest delivery is destined for Houston, Texas.
DG Khan Cement's executive director Farid Fazal said that the Pakistan cement industry is position to obtain an over 10% share in the US import market. During 2022, Pakistan and 24 other countries exported cement to the US.
Argos USA orders ship unloader from Bruks Siwertell
11 January 2023US: Argos USA has ordered a 490 M-type ship unloader from Swden-based Bruks Siwertell for cement and fly-ash handling at the Port of Houston in Texas. The unloader will have a continuous rated cement handling capacity of 800t/hr and is designed to accommodate vessels up to 65,000 dwt. It will be assembled on site and is planned for delivery in February 2024. Bruks Siwertell will also supply the complete screw conveyor system for transporting dry bulk material from the unloader to a storage dome, along with support structures and walkways.
US: Cemex USA and RTI International have secured US$3.7m in funding from the US Department of Energy for their Balcones cement plant amine technology carbon capture study. The plant in New Braunfels, Texas, will trial RTI International's non-aqueous solvent (NAS) system, licensed by energy and technology company SLB. Resources News has reported that the system will have a CO2 capture capacity of 670,000t/yr. RTI International's principal project investigator Vijay Gupta said that NAS capture has a 30 - 40% lower energy penalty than preceding solvent-based technologies.
Cemex USA president Jaime Muguiro said "We remain committed to exploring technologies that can help us meet our targets as we build a more sustainable future. We are striving to cut emissions across all our operations, and this study with RTI International is one of the many steps Cemex is taking to achieve our objectives."
Cemex announces raft of carbon capture projects
22 November 2022Mexico: Cemex has announced a raft of new carbon capture projects in Europe and North America. When commissioned, they will bring its total installed CO2 capture capacity to over 3Mt/yr. The projects consist of three front-end engineering (FEED) studies to scale installations of Australia-based Leilac’s direct separation technology at Cemex cement plants in Germany, Poland and the US; a fourth FEED study for 95% capture installation at the Balcones, Texas, cement plant using RTI International's solvent capture technology and a development partnership for the cement industry's most comprehensive carbon capture, utilisation and storage (CCUS) studies at eight further cement plants in Europe, Mexico and the US.
Chief executive officer Fernando González said “CCUS brings together the essence of our strategic priorities: sustainability and innovation. Our Future in Action programme to achieve sustainable excellence and become a net-zero company is all about measurable, verified progress towards the most ambitious decarbonisation pathway in the industry. Although CCUS technologies are not ready to be scaled quite yet, it will take relentless work and innovation to ensure their viability in time to avoid the most damaging effects of climate change.”
GCC announces three new senior leadership appointments
02 November 2022Mexico: GCC has made new appointments to the roles of project director, chief financial and planning officer and general counsel, effective immediately. Luis Carlos Arias will now serve as project director to the company's Odessa, US, cement plant expansion. Arias previously served as the group's chief financial officer. Maik Strecker steps into the role of chief financial and planning officer. Strecker joined GCC as chief planning officer in 2020. He has two decades' previous experience in roles spanning mergers and acquisitions, business development, product line management, operations and sales and marketing. Lastly, Cesar Conde will serve as GCC's general counsel. Conde has worked for the group since 2006.
GCC's CEO Enrique Escalante said "I am confident these executives bring proved strategic and execution leadership to the Company, and I look forward to the challenges and opportunities ahead."
Construction of largest 3D printed building in the US commences
16 September 2022US: COBOD says that construction of the largest 3D printed building in the US using its 3D printing technology has commenced at a site in Houston, Texas. The building is the country’s first two-storey residential building constructed using the method. PERI handled the order for contractor CIVE and architect HANNAH.
CIVE president Hachem Domloj said “Having the opportunity to be the engineers and general contractor for the first two-storey 3D printed structure in the US has been an honour. We can see how this technology and our team’s approach is providing the scalability to larger commercial developments. Collectively, we're changing the way our country builds, and paving the way for more affordable housing, higher structural integrity and faster building capabilities. The possibilities of 3D printing are endless!”
US cement shipments grow by 4% to 52.4Mt in first half of 2022
08 September 2022US: Total US cement shipments grew by 4% to 52.4Mt in the first half of 2022 from 50.4Mt in the same period in 2021. Data from the United States Geological Survey (USGS) shows that local shipments and imports rose by 3.5% to 44.1Mt and 7% to 8.31Mt respectively. The largest sources of imports of cement and clinker were Turkey at 4.57Mt, Canada at 2.19Mt, Mexico at 1.28Mt, Greece at 1.23Mt and Vietnam at 0.94Mt. The largest cement producing states in the reporting period, in descending order, were Texas, California and Missouri.