Displaying items by tag: Indonesia
Suvo Strategic Minerals develops cement from nickel slag
10 October 2024Indonesia: Suvo Strategic Minerals has reported successful laboratory tests in collaboration with Makassar State University (UNM) in Indonesia, transforming nickel slag into a ‘high-strength, low-cost and low-carbon’ cement, according to The Sydney Morning Herald. The trials used slag from PT Huadi Nickel-Alloy Indonesia's operations in South Sulawesi, achieving a compressive strength of 37.5MPa after seven days. The company is now looking to conduct further testing and will provide the results to PT Huadi, with the aim of forming a partnership for the commercialisation of low-carbon cement using nickel slag.
Aaron Bank, executive chair of Suvo Strategic Minerals, said “We are excited to have commenced this workstream in Indonesia testing the byproduct of one of the country’s largest mining companies, with our ultimate goal being to manufacture an environmentally-friendly and low-carbon alternative to Portland cement. Achieving up to 37.5MPa after only seven days is an outstanding first round trial result for the company and could provide an entry into a large industry.”
Indonesian government prepares to allow nickel and copper slag for building material production
28 May 2019Indonesia: Fajar Harry Sampurno, the State-Owned Enterprises (SOE) Ministry's undersecretary for mining, strategic industries and media affairs, says that the Environment and Forestry Ministry will issue rules stating that mineral waste such as slags resulting from processing nickel and copper ores could be used as raw material for the production of bricks, asphalt, concrete and cement. Mineral waste including copper and nickel slags are currently categorised as hazardous and toxic waste (B3), requiring special handling, according to the Jakarta Post newspaper.
Harjanto, the Industry Ministry's metal, machinery, transportation equipment and electronic industries director general, said the volume of nickel slag, which at present totals 20Mt/yr, would increase ‘sharply’ within the next few years when new mineral smelters currently under construction start operating. The government expects the construction of 31 smelters to be completed by 2021. At the end of 2018 27 smelters were operating, of which 17 are nickel smelters.
Indonesia: Krakatau Semen Indonesia (KSI) is targeting strategic infrastructure projects for its slag cement products. The company’s ground granulated blast furnace slag (GGBFS) no longer requires special permission to be used, according to the Antara news agency. The joint venture between Krakatau Steel and Semen Indonesia operates a 0.69Mt/yr slag grinding plant at Cilegon in Banten.
Semen Indonesia launches slag cement
22 September 2017Indonesia: Semen Indonesia has launched a new slag cement product under the brand ‘Maxstrength Cement.’ The cement producer said it was the first Portland Slag cement produced in the country. The company can producer 1500t/day of the slag cement and it is intended for use in large scale infrastructure projects that require high flexural strength, such as bridges or road flyovers.
Krakatau Semen Indonesia launches slag-grinding plant
04 September 2017Indonesia: Krakatau Semen Indonesia (KSI), a joint venture between Krakatau Steel and Semen Indonesia, has launched a slag grinding plant in Cilegon, Banten. The 0.69Mt/yr ground granulated blast furnace slag (GGBFS) plant had an investment of US$31m, according to the Jakarta Post newspaper. Construction at the site started in 2014. Both the companies running the venture are state owned and they own an equal share each in the plant.
Indonesia: PT Krakatau Semen Indonesia has ordered a slag grinding mill from Loesche for its Cigading grinding plant in Cilegon, Banten. Krakatau Semen will use a Loesche mill with an LDC classifier to grind ground granulated blast furnace slag to a fineness of 4500cm²/g. The scope of supply for this contract also includes the raw material transport system, the mill dust extraction system, the reject system and the silo equipment. The mill is scheduled for operation by the first quarter of 2017.
Subsidiaries of Loesche are participating in the contract. Loesche ThermoProzesstechnik is supplying the grinding plant with a hot gas generator type LF-36L (fully inline) for the combustion of industrial diesel oil. Automation of the plant is supplied by Loesche Automatisierungstechnik. Loesche Indonesia will provide a service contract including personnel services. In addition, Loesche will monitor the local production as well as the assembly and commissioning.
PT Krakatau Semen Indonesia was founded in November 2013 as a state-run company. In a joint venture with PT Semen Indonesia, PT Krakatau Semen Indonesia is building its first plant of this type with a planned production of 0.75Mt/yr.
Indonesia: Krakatau Semen is set to start producing ground granulated blast furnace slag (GBFS) at its Cilegon plant by December 2016. The joint venture between Krakatau Steel and Semen Indonesia is due to produce 300,000t/yr of slag powder, according to Bisnis Indonesia. The company has invested US$36m into building the plant. Construction started in 2014.