Europe accounts for 8.3 % (103.9 Mta) of production, North America 2.5 % (30.8 Mta). 10 shows the market trend since 2007 according to data from the Slag Cement Association (SCA). The cheapest means of transport is by water (Fig. Usage in sinter mix -Steelmaking slag contains high percentage of CaO (mostly above 50 %). 61 %, utilization as a building material (road construction, earthworks, hydraulic engineering) accounts for the largest amount, followed by recycling in metallurgical processes with 18.5 % and use as fertilizer with 9.7 %. By international comparison, these figures give Japan a leading position. In South Korea, the production of blast furnace slag grew significantly in the years leading up to 2017. The oxidation of slag was carried out in both solid and liquid states, attempting to optimize the conditions of each. Fig. The following report provides an overview of the recycling quantities with current worldwide market data and trends. This website uses cookies. In total, there are around 600 Mta of slags from the steel industry worldwide, of which 58 % are BFS and 42 % are steelworks slags. Iron and steel slags are by-products of steel production. Slag imports accounted for 5.2 % of the total in 2017. Interested in the latest information on the processing of recyclables? Fig. By-products, scrap and the circular economy Steel is the only major material group today that can meet tomorrow’s challenge of a fully circular economy due to its high recyclability, whereby 85-90% of steel products are recovered at their end of life and recycled to produce new steel. In 2019, the industry came under pressure due to pollution problems, and steel production fell by 1.5 % compared to the previous year. The volume instability caused by free lime exposure to moisture means that the reuse of steelmaking slag is often limited as many potential applications, and the leaching behavior of steelmaking slag is important for environmental considerations. 15. Steelmaking plants continuously strive to reduce the environmental load in the steelmaking process, resulting in the recycling of energy, water, and other byproducts. Steelworks slag is increasingly finding use as a substitute for gravel and grit in concrete production. The majority (83.7 %) was granulated blast furnace slag (slag sand) used for cement production, while a further 1.2 % of slag sand went into the production of concrete. In 2018, the country produced about 225 Mta of blast furnace slag and about 122 Mta of steelworks slag after 200 Mta and 81.5 Mta respectively in 2010. Charging an LD converter with molton pig iron, 1 Steel industry processes resulting in slag formation, 2 Worldwide pig iron production by region/country, 4a Utilization of blast furnace slag in Germany, 4b Utilization of steelworks slags in Germany, 5 Granulation process in the Danieli-Corus slag granulator, 6 Recycling of blast furnace slag in Europe (Euroslag), 11 Recycling of blast furnace slag in Japan, 13 Recycling of steelworks slag in China in 2017, [5], 14 Availability of blast furnace slag in South Korea, 15 Recycling of blast furnace slag in South Korea, 16 INBA granulating plant at ThyssenKrupp in Hamborn, 18 Granulated blast furnace slag grinding plant in Duisburg-Schwelgern. Depending on which of these production processes is used, one speaks of blast furnace slag or steelworks slag. In 2018 and 2019, we therefore invested in new non-ferrous metal separators and in “Stratego”, the most efficient metal finishing machinery on the market. In Brazil, by-products from the steel industry consist of 42 % blast furnace slag, 27 % steelworks slag and 31 % other by-products such as dusts, sludges, etc., according to figures from the Brazil Steel Institute for 2017. 16, China: Springer, 2009. The slag derived from stainless steel production presents particular challenges, owing to the handling of fines in its cooled state. This steel can be recycled. Kulwant Kingh, Sunil Pandey. At the heart of our commitment to recycling is the fact that the very material we make every day is the single most recycled material on the planet with an overall recyclability rate of 86%. Reducing Generation and Discharge of Byproducts at JFE Steel. The steel industry in North America has been recycling steel scrap for more than 150 years. In the USA, about 17.0 Mta of iron and steel slag was produced in 2019, after 15.7 Mta in 2016. In the USA, the slag is processed at a total of 129 locations by 28 companies. 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