Technical Report UDC 669 184 28 Nippon Steel
Steelmaking Slag for Fertilizer Usage Kimio ITO* Abstract Both blast furnace slag and steelmaking slag have been utilized as raw materials for fertilizer Fertilizers made of blast furnace slag or steelmaking slag are categorized in slag silicate fertilizer, byproduced lime fertilizer, slag phosphate fertilizer or iron matter of special Steel slag, an unavoidable byproduct in iron and steel production, may soon finds its way into agricultural land as soil nutrient, potentially cutting down India’s dependence on fertiliser importsSteel slag may now be used as fertiliser for soil The LD steel slag as fertilizer in agriculture Steel LD slag can also be used in fertilizers for agricultural applications (Das et al, 2007) The efforts have been made in Tata steel that LD slag after grinding to 300 mesh, can be used as a soil conditioner in paddy field, tea gardens etc (Basu et al, 2002)An Overview of Use of LinzDonawitz (LD) Steel Slag
Possible Uses of Steelmaking Slag in Agriculture: An
Steelmaking slag deriving from BOF process (using the LinzDonawitz (LD) converter) comes from the pig iron refining process, wh ich converts molten pig iron and steel scraps into high quality steel Most slags from steel pl ant derive from this pr ocess, with an average of 150200 kg of slag generated per tonne of st eel produced Interestingly, the TN contents of all digestates with steel slag were higher than those of bioorganic fertilizer, while the TP and TK contents were much lower than bioorganic fertilizer, which is a similar phenomenon found in the work of Yun et al (Yun et al, 2019) This finding means that the TP and TK contents in the digestate with steel Steel slag as accelerant in anaerobic digestion for slag volumes have been reduced on commercial scale from about 140 kg/tonne steel to 60 kg/tonne steel Moreover, model predictions have shown that, in principle, all slag can be recycled and the phosphorous extracted to produce fertilizer This development is of particular significanceIndustrial uses of slag—The use and reuse of iron and
Steel slag in China: Treatment, recycling, and
Steel slag fertilizer was applied at a rate of 200 and 400 g m −2, which led to an increased yield of about 8% for the rice planted compared with the rice planted without the slag fertilizer application; this increase extended another 4% when the applied amount of slag was doubled (Gao et al, 2015) Steel slag, however, contains trace Scrap steel reclamation – Steelmaking slag contains around 10 % scrap steel, which can be reclaimed through crushing, sorting, magnetic separation and screening process This steel can be recycled Usage in sinter mixSteelmaking slag contains high percentage of CaO (mostly above 50 %) It can be used as fluxing agent in the iron ore Properties and Uses of Steelmaking Slag – IspatGuru * Senior Manager, Head of Dept, Planning Coordination Dept, Slag Cement Div 261 Marunouchi, Chiyodaku, Tokyo 1008071 1~8 A figure of 1~8 shown at the right side shoulder of an author’s name denotes the number of the chapter of his authorship in this report Overview of Slag Usage Technology Development at Various WorksTechnical Report UDC 669 1 054 82 Overview of Slag
Guide for the National Slag
A steel slag from Maryland was reported to have a CCE of 55 % (Kerins, 2008) Munn (1998) studied steel slag, metallic steel slag, and blast furnace slag and reported CCEs of 80, 65, and 81 %, respectively Beck and Daniels (2008) reported CCEs of 49 and 18 % for fine and coarse steel Steelmaking slag deriving from BOF process (using the LinzDonawitz (LD) converter) comes from the pig iron refining process, wh ich converts molten pig iron and steel scraps into high quality steel Most slags from steel pl ant derive from this pr ocess, with an average of 150200 kg of slag generated per tonne of st eel producedPossible Uses of Steelmaking Slag in Agriculture: An LD steel slag as fertilizer in agriculture Steel LD slag can also be used in fertilizers for agricultural applications (Das et al, 2007) The efforts have been made in Tata steel that LD slag after grinding to 300 mesh, can be used as a soil conditioner in paddy field, tea gardens etc (Basu et al, 2002)An Overview of Use of LinzDonawitz (LD) Steel Slag
An Overview of Utilization of Steel Slag ScienceDirect
Univ Iron Steel Technol( in Chinese) 2011;20(3):2236 [17] Zhang AH Study on steprecycling use of metallurgy slag (in Chinese, dissertation) Xian: Xian University of Architecture and technology; 2005 [18] Ozeki S Properties and usage of steel plant slag Encosteel: steel for sustainable development International Iron and Steel Univ Iron Steel Technol( in Chinese) 2011;20(3):2236 [17] Zhang AH Study on steprecycling use of metallurgy slag (in Chinese, dissertation) Xian: Xian University of Architecture and technology; 2005 [18] Ozeki S Properties and usage of steel plant slagAn Overview of Utilization of Steel Slag百度文库 How to Garden With Basic Slag Basic slag (CaSiO3) is produced through the openhearth method of steelmaking and is used to amend highly acidic soil Its pHraising effect is similar to that of How to Garden With Basic Slag Home Guides SF Gate
Technical Report UDC 669 1 054 82 Overview of Slag
* Senior Manager, Head of Dept, Planning Coordination Dept, Slag Cement Div 261 Marunouchi, Chiyodaku, Tokyo 1008071 1~8 A figure of 1~8 shown at the right side shoulder of an author’s name denotes the number of the chapter of his authorship in this report Overview of Slag Usage Technology Development at Various Works Piles of steel slag, a solid waste generated from the iron and steel industry, could be seen due to no utility found for the past century Steel slag has now gained much attention because of its new applications The properties of slag greatly influence its use and thus had got varied applications The chemical composition of steel slag varies as the mineral composition of raw material such as Review on the innovative uses of steel slag for waste Tu X(1), Aneksampant A(1), Kobayashi S(1), Tanaka A(1), Nishimoto R(1), Fukushima M(1) A consecutive early ricelate rice rotation experiment was conducted to test the impacts of steel slag on soil pH, silicon availability, rice growth and metalsimmobilization in paddy soil Steel Slag Steel slag is produced during the steel making process where, after air cooling, a dense rock material is disadvantages of steel slag koziwarm
The use and advantages of slag voestalpine
LD slag has a series of advantages over natural rock in the field of road construction Greater hardness Slag has a greater PSV (Polished Stone Value): ie, greater resistance to wear This is the result of its mineral composition The consequences: less wear and longer road lifetimes Roads constructed using LD slag demonstrate reduced rutting MSDS: Slag Page 3 of 6 Revised: 03/01/14 Section 4: FIRST AID MEASURES Eye Contact: Rinse eyes thoroughly with water for at least 15 minutes, including under lids, to remove all particles Seek medical attention for abrasions Skin Contact: Wash with cool water and a pH neutral soap or a mild skin detergent Seek medicalMSDS: Slag Material Safety Data Sheet
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