Displaying items by tag: Japan

Japan: Sumitomo Osaka Cement has formulated a set of medium-term goals and long-term policies in order to enable it to achieve carbon neutrality, in line with the Japanese government’s target, by 2050. These consist of a 30% reduction in energy-derived carbon dioxide (CO₂) emissions intensity between 2005 and 2030 and efforts toward carbon neutrality in energy and process-derived emissions by 2050. These efforts include: “reduction to the limit of fossil energy, development and introduction of process-derived CO₂ emission reduction technology, carbon-free electric power, technology development and supply expansion related to low-carbon cement and concrete products, development and supply of innovative bonding materials and development and introduction of innovative technology related to carbon capture, utilization and storage (CCUS).”

Philippines: Japan-based Taiheiyo Cement has approved plans for the installation of a new 3.0Mt/yr production line at its integrated San Fernando cement plant in Cebu. The project at subsidiary Taiheiyo Cement Philippines (TCPI) will cost around US$280m.

The company said that it decided to build the upgrade in response to four-year demand growth of 30% to 32Mt/yr in 2019 from 24Mt/yr in 2015, in line with economic growth in the Philippines. It said, “Despite demand shrinking in 2020 due to the effects of the coronavirus pandemic, it is expected to rise again with strong gross domestic product (GDP) recovery, estimated to be 5% in 2021, and the massive infrastructure investment programme ‘Build Build Build’.”

The company added, “The new line will offer significant advantages in terms of energy efficiency and will reduce CO₂ emissions from energy use in clinker production by more than 10% compared with the efficiency of the current line. Additionally, it is expected that the higher quality clinker produced with the new line will enable a reduction in the clinker factor and thereby realise a further CO₂ reduction per tonne of cement produced.” The line has the potential for expansion to 5.0Mt/yr production capacity.

Japan: Sumitomo Osaka Cement says that independent tests have confirmed that the radioactivity levels of cement produced at its 0.9Mt/yr Tochigi plant in Sano, Tochigi Prefecture are “below the lowest detectable limit,” meaning that the product is safe. The company said, “We hope that you will continue to use our products with peace of mind.”

Production at the plant was disrupted in 2011 when it was discovered that it was co-processing sewage sludge sourced from near the Fukushima Daiichi Nuclear Power Plant in Ōkuma, Fukushima Prefecture. The power plant suffered a nuclear meltdown following the Tōhoku earthquake and tsunami in 2011 that led to widespread radioactive fallout.

Japan: Sumitomo Osaka Cement has started using Michibiki, a Japanese satellite positioning system, as part of a demonstration project by its limestone mining operations to improve efficiency. At present the company uses so-called ‘internet of things’ technology such as yard inventory management by drone and rough stone quality management by heavy equipment, including loaders and dump trucks, equipped with Global Positioning System (GPS) tablet terminals. The group operates eight limestone mines in Japan and it mines 20Mt/yr.

In case you missed it, last week we covered a news story about Taiheiyo Cement’s plans to step up its lithium-ion battery recycling business at its integrated Tsuruga plant. It’s the latest step in the Japan-based cement producer’s collaboration with recycling company Matsuda Sangyo. The work is timely given that electric cars accounted for 2.6% of global car sales in 2019 and this share is growing. Many of these electric vehicles use lithium-ion batteries and moving away from fossil fuel powered transport creates new problems such as how to manage old batteries that can no longer be used.

Figure 1: Lithium-ion battery recycling process by Taiheiyo Cement and Matsuda Sangyo. Source: Translated from Taiheiyo Cement CEMS technical magazine.

Taiheiyo Cement and Matsuda Sangyo have been working on their process since 2011. First, they dismantle the batteries to extract base metals and plastics. They then heat the batteries in a dedicated ‘roaster’ using waste heat from the cement production process, before crushing and sorting them to remove cobalt, lithium, aluminium and scrap iron. Hydrogen fluoride produced in this stage is sent to the kiln where it is detoxified by calcium. Remaining elements from the battery that are not reclaimed are then used as an alternative fuel by the cement plant.

Taiheiyo Cement says that its roasting equipment can process up to 10t/day but it’s difficult at this stage to assess what demand for this service they might encounter. If, one estimate of 2m/yr used lithium-ion batteries by 2030 is correct and Taiheiyo Cement’s processing rate doesn’t get much higher, then 500 cement plants could possibly solve this problem. Yet, Taiheiyo Cement and Matsuda Sangyo have made no mention of the economics of their process. Other recycling methods also exist and research into new ones is ongoing. Cement plants recycling batteries might be economic compared to these alternatives or it might not, only time will tell.

The wider point here is that here is yet another industrial and logistical process that can potentially be linked to cement production. It follows well known ones, such as using alternatives fuels or captive power plants, or more novel ones, such as CO₂ or hydrogen networks. In each case the business of making cement changes as new methods are learned, new commodities are sought and new markets are connected. The cement company then has a choice about how involved it wants to become with each new process. The classic example here is the waste processing companies that surround co-processing, with some cement companies having their own dedicated subsidiaries, for example LafargeHolcim and Geocycle.

As it all becomes more complicated the role of a cement plant slowly becomes redefined. If a cement plant disposes of municipal waste and car batteries for its local community, generates electricity from its solar or wind plant for a nearby city and uses its CO₂ to either produce biofuels, plastics or baking soda is it still just a cement plant? The pivot by building materials manufacturers in recent years from a focus on cement to concrete suggests that once the societal or economic conditions are right it could change. For the time being cement plants remain cement plants but give it a thought next time you buy a new car.

Japan: Taiheiyo Cement recorded a net profit between 1 March 2020 and 30 June 2020, the first quarter of the 2021 financial year, of US$30.6m, down by 42% year-on-year from US$52.6m in the first quarter of the 2020 financial year. Sales fell by 3% to US$1.88bn from US$1.94bn. The company said that the coronavirus outbreak affected sales in all regions.

Japan: Taiheiyo Cement is starting large-scale recycling of large lithium-ion batteries at its integrated Tsuruga plant. It has been developing the process with Matsuda Sangyo since 2011 using exhaust gases from clinker production as part of dismantling, crushing and sorting processes to extract precious metals from the batteries. Taiheiyo Cement, its subsidiary Tsuruga Cement and Matsuda Sangyo started a recycling business in April 2020 following certification by the Japan Auto Recycling Partnership (JARP).

Japan: A proposal by Mitsubishi Group on researching CO₂ injection into concrete has been approved for a grant from the New Energy and Industrial Technology Development Organisation (NEDO). This joint project between Mitsubishi Group, Kajima Corporation, and Chugoku Electric Power aims to improve the existing technology so that it can be applied to the reinforced and cast-in-place concretes used in building construction. At present the group said that current carbon-recycling techniques are mainly used for unreinforced concretes, such as concrete blocks.

Mitsubishi Group has already been involved in the development of concrete projects that take advantage of carbon-recycling, including a zero-emission concrete called CO₂-SUICOM. It added that carbon capture, utilisation and storage (CCUS) technologies, including carbon-recycling, are an excellent opportunity for the company to use its strengths between industries that both emit and use CO₂.

Japan: Sumitomo Osaka Cement is working on a three year CO₂ mineralisation research project from 2020 to 2022 with Yamaguchi University, Kyushu University and the New Energy and Industrial Technology Development Organisation (NEDO). The initiative plans to develop the technology to build a process that captures CO₂ exhaust from cement and power plants and then mineralises it with calcium-containing waste materials. It intends to use the process practically in 2030.

Japan: Taiheiyo Cement has installed three BWZ bucket elevators and a Louise TKF drag chain conveyor supplied by the Hong Kong-based subsidiary of Aumund at its new power plant at Ofunato. The cement producer uses both biomass and coal at the plant.

Two elevators and the drag chain conveyor are used to transport palm kernel shells (PKS) and palm empty fruit bunches (EFB), which are used as alternative fuels in the power plant. Each has a capacity of up to 150t/hr. The conveying concept is designed so that the different materials are kept apart and enter the silo buffer tanks separately. The third bucket elevator is used for coal handling. It is a gravity discharge type BWZ-S elevator with a capacity of up to 35t/hr.