Displaying items by tag: Mill

US: Ash Grove Cement plans to build a new cement mill at its cement plant in Durkee, Oregon. The project is scheduled to be completed by the end of 2024. The upgrade is intended to allow the plant to manufacture low-carbon cement products.

Serge Schmidt, the president of Ash Grove Cement, said "The transition to low carbon cement production and reducing our environmental footprint is a top priority for Ash Grove Cement. We are always seeking new ways to improve our sustainability performance while providing high-quality cement solutions to our customers. This state-of-the-art finish mill at our Durkee plant will strengthen Ash Grove's position as a leader in low-carbon cement across the Western US."

Bangladesh: Premier Cement Mills has installed an 11,000t/day vertical roller mill (VRM) at its West Mukterpur grinding plant in Munshiganj. The producer said that the expansion will more than double the grinding plant’s capacity to 7Mt/yr.

Energy & Power News has reported that Premier Cement Mills took a loan worth US$32.4m for the construction of the new mill.

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

Burkina Faso: Ciments de l'Afrique (CIMAF) has ordered a Polysius booster mill from Germany-based ThyssenKrupp Industrial Solutions (TKIS) for its grinding plant at Ouagadougou. This is the first industrial reference of the product that promises to allow a greater substitution of clinker with local filler by boosting the fineness and reactivity of the clinker. It will also maintain both cement quality to local standards and production capacity of the exiting ball mill at the unit.

Mohamed Naciri, the Regional General Manager for CIMAF, commented “Burkina Faso is a landlocked country where clinker has to travel at least 1200km to reach Ouagadougou, every technology aiming to decrease the cement clinker factor is welcome, this project is also an important milestone in our decarbonation road map, TKIS is a key partner for CIMAF to decrease our group CO₂ footprint.”

CIMAF owns and operates 13 grinding plants in Africa. It runs plants in Burkina Faso, Cameroon, Chad, Ivory Coast, Gabon, Ghana, Guinea Bissau, Guinea, Mali, and Mauritania. CIMAF's parent company, Omnium des Industries et de la Promotion (OIP), is a cement supplier across north, west, and central Africa, producing about 12Mt/yr. It is the third largest cement producer in Morocco with two integrated plants.

Bangladesh: Aman Cement has held a ceremony to launch a second 5000t/day vertical roller mill at its Unit 2 Siragonj grinding plant in Narayangonj. The plant now has a total production capacity of 10,000t/day, according to the Daily Star newspaper. Germany-based Loesche previously supplied the first mill for the plant.

Morocco: NovaCim’s new 1.4Mt/yr cement plant at Ouled Ghanem near El Jadida has produced its first cement. Denmark-based FLSmidth supplied equipment for the unit including an OK type vertical roller mill, which it says is the first such installation of the product in the country. FLSmidth said in 2019 that it was going to build the plant for TEKCIM in conjunction with the Société Générale des Travaux du Maroc (SGTM). Full commissioning is scheduled for 2023.

India: Germany-based Gebr. Pfeiffer and its subsidiary Gebr. Pfeiffer (India) say they have received a follow-up order from Ultratech Cement for additional mills for new clinker production lines at its Kotputli plant in Madhya Pradesh and its Maihar plant in Rajasthan.

At the Kotputli plant it is planning to supply a MVR 5000 R-4 type mill to grind raw material. This mill can grind approximately 740t/hr to a product fineness of 1.0 % R 212µm with a 4800kW drive. At the Maihar plant a MVR 6000 R-6 type mill will also be supplied to grind raw material. In addition, several MPS 3550 BK type mills will be provided to grind fuel. These mills can grind approximately 45t/hr of pet coke, 90t/hr of coal, or any blend of the two materials. These are equipped with a 1300kW gearbox.

The plant design and the entire customer support will be handled by Gebr. Pfeiffer (India). The core components, such as gearboxes, grinding bowls, the grinding roller suspension system and the grinding rollers, will be supplied from Europe by Gebr. Pfeiffer. The remaining components, such as the foundation parts, the housings, the classifiers and most of the plant components will be provided by Gebr. Pfeiffer (India).

Bangladesh: The Infrastructure Development Company (IDC) has agreed to loan Crown Cement US$25m to help it build a sixth plant. The new unit will use a vertical roller mill, according to the New Nation newspaper. The IDC is a government-owned non-banking financial organisation that finances projects in the infrastructure, renewable energy, and energy efficiency sectors.

US: Bulk material handling equipment supplier MDG America says that it delivered four chain bucket elevators for Drake Cement's upgrade of its Paulden cement plant in Arizona. Drake Cement installed a new vertical mill grinding plant for cement, granulated blast furnace slag (GBFS) and raw materials grinding at the 0.7Mt/yr integrated plant. The supplier says that two of the elevators will work in a pair, conveying material from a feeder belt, while a third will convey it to the new mill. The fourth elevator will then collect the material for further grinding and metal discharge.

Drake cement secured approval to mine pozzolan for use in the Paulden's plants cement production at Bill Williams Mountain earlier in October 2022. As part of minimising the future mine's impacts, Drake Cement has offered to help the US Forestry Service to thin local woodland as part of local anti-fire management efforts.

Russia: Eurocement is investing over Euro3m towards upgrading a mill at its integrated Lipetskcement plant. The main work will add a separator to the mill. The addition will allow the unit to produce finer grades of cement and increase output by 20%. Work on the project started in September 2022 and is expected to be completed in early 2023.