Therefore, the use of steel slag as agricultural lime material and/or mineral fertilizer is of great importance (Hemalatha 2013; Wen et al. 2020). The slag formed as a result of the steelmaking ...
Others benefits of using steel slag as a fertilizer are increased biotic and abiotic stress resistance particularly drought, and contributions to healthy growth and …
The comprehensive utilization rate of steel slag in the United States was relatively high, reaching 84.4%, with the majority being utilized for road construction and …
Ferrous slag is currently underutilized. Although the construction industry does use some slag as an aggregate, most is simply discarded. However, slag could be used to treat acid soils or acid mine drainage. Doing so would both offset the cost of restoring abandoned mine areas, as well as decrease steel manufacturers' current waste footprint.
Steel slag containing a small amount of harmful heavy metal elements such as Cr 6+, Pb 2+ is of the main factors hindering the application of steel slag in agriculture [7, 8].China's Official GB8173-87—Standard for Controlling Pollutants in Agricultural Fly Ash, based on the total concentration of heavy metals, but the total concentration of …
The feasibility of steel slag used as an iron fertilizer was studied in a pot experiment with corn. Slag alone or acidified slag was added to two Fe-deficient calcareous soils at different rates ...
Slag is used as a soil amendment due to its high. Ca and Mg content, and on the other hand, it is used directly as a ra w material for the production of silicon. …
diamond paste. The resin-embedded specimen of slag fertilizer with the gold vapor deposition film removed was used for the static pad-dy field test. 2.1.2 Placing and collecting the slag fertilizer in the paddy field The resin-embedded specimen of slag fertilizer (before place-ment in the paddy field) is shown in . Fig. 1.
AgroSilicio, a product of Harsco Environmental, has developed a low-carbon fertilizer made of recycled steel slag. The steel industry by-product has reduced Brazil's carbon footprint by more than 80,000 tons, the equivalent of planting 570,000 trees.; Harsco Environmental LATAM regional president to present the solution at the United National …
Steel slag, an unavoidable by-product in iron and steel production, may soon finds its way into agricultural land as soil nutrient, potentially cutting down India's dependence on fertiliser imports.
In studies on the determination of the efficiency of using steel slag as Fe fertilizer, it has been revealed that very significant increases in yield and plant Fe intake are achieved depending on the application dose in calcareous soils with Fe deficiency. Xian & Qingsheng (2006) applied steel slag directly and in the acidified form to ...
The Si fertilizers tested in this study were supplied by the following companies: Elkem A and Elkem B from Elkem International Trading (Shanghai) Co., Ltd., China, Steel slag from Harsco-Tisco Science and Technology Company, China, Fulibang from Shanxi Fubang Fertilizer Limited Company, China, Shanjia 1 and Shanjia 2 from …
Steel slag has been widely used as amendment and silicon fertilizer to alleviate the mobility and bioavailability of heavy metals in soil. The objective of this study was to evaluate the influence of particle size, composition, and application rate of slag on metal immobilization in acidic soil, metals uptake by rice and rice growth.
Steel slag is a large discharge of industrial waste slag. Chinese effective utilization rate of steel slag is only 20%, causing great harm to the environment and economy.
Table 2 – 3 show that application of both iron slag (Q) and steel slag (H) fertilizers significantly increased dry weight of leaf and stem, and grain yield compared with the control (Si 0) treatment. However, there was no significant difference among different application rates of silicon (except Si 0). Dry weight of leaf and stem showed no ...
Steel mill services firm Harsco Environmental has been producing and selling AgroSilicio, a low-carbon fertilizer made from steel slag, in Brazil in cooperation with the government of a Brazilian state. Harsco, a division of Philadelphia-based Enviri Corp., has been invited by the Brazilian state of Minas Gerais to make a presentation on the ...
Accelerants can effectively enhance the performance of anaerobic digestion (AD) system. The effects of optimized steel slag as accelerant in the AD of cow manure and the fertility utilization of the digestate were investigated. Results show that all steel slags collected from different iron and steel companies (slag-1, slag-2, and slag-3) …
Figure 2 Preparation of slag fertilizer in epoxy resin, and electron probe micro-analyzer (EPMA) analysis. Steel slag fertilizers were embedded in epoxy resin. Epoxy resin was ground and polished to expose the cross section of each fertilizer. After the first EPMA analysis, this resin specimen was set in paddy soil for 75 d.
Notably, steel-making slag and blast furnace slag have been extensively utilized as raw materials for fertilizer production, mostly in Japan, Korea, and China. Fertilizers made …
The steel slag fertilizer was applied as the basic fertilizer in each season before rice transplanting. First, steel slag fertilizer was incorporated well with 5.0 kg soil in each plastic pot. These pots were incubated for 30 days after addition of slags and watered daily with distilled water to maintain 2–3 cm submergence throughout the ...
Steel slag as an iron fertilizer for corn growth and soil improvement in a pot experiment, project supported by the National Natural Science Foundation of China (No. 30270800). Pedosphere. 2006; 16 (4):519-524. ISSN 1002-0160. DOI: 10.1016/S1002-0160(06)60083-0; 14.
The iron-making and steel-making industries produce four types of slags, named after the processes from which they are produced (Fig. 2): Blast Furnace Slag (BFS), Basic-Oxygen Furnace Slag (BOFS), Electric-Arc Furnace Slag (EAFS), and Ladle Furnace Slag (LFS), and the type of slag produced is dependent on the desired steel …
Highlights A steel slag-compost fertilizer is useful for restoring seaweed-bed in barren coast. The structural features of HA in the fertilizer were analyzed by TMAH-py-GC/MS. The decrease of phenol moieties and the enrichment of sulfur were observed with slag. Detection of marker acids supports the contribution of sulfate reducing bacteria. …
It has been well documented steel slag is a good silicon fertilizer material; it cannot only improve the fertility ofsoil but also enhance the growth and yield ofcrops and the resistance of plants to disease (Seebold et al. 2001; Datnoff et …
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 ...
Others benefits of using steel slag as a fertilizer are increased biotic and abiotic stress resistance particularly drought, and contributions to healthy growth and high yields (Susilawati et al. 2015). Therefore, the application of steel slag to crop land is an attractive disposal with high economic and environmental benefit.
As a product of waste steel industries, slags are high in CaO, P2O5, SiO2, MgO, MnO, and Fe oxides, which can be used for fertilizer applications (Wang and Cai 2006;Ning et al. 2016;Das et al. 2020).
In China, the first steel slag fertilizer program invested by Taiyuan Iron and Steel Group and Harsco Corporation of the USA started building in 2011 …
Steel slag phosphate fertilizer was made from basic steel slag by crushing and grinding. Its main components were Ca 4 (PO 4) 2, Ca 2 SiO 4, and some metal elements such as magnesium, iron, and manganese. For acid soil, steel slag phosphate fertilizer was an excellent base fertilizer, which could improve soil fertility. The release …
Steel slag has been widely used as amendment and silicon fertilizer to alleviate the mobility and bioavailability of heavy metals in soil. The objective of this study was to evaluate the influence of particle size, composition, and application rate of slag on metal immobilization in acidic soil, metals uptake by rice and rice growth. The results …
The steel slag fertilizer was applied as the basic fertilizer in each season before rice transplanting. First, steel slag fertilizer was incorpo-rated well with 5.0 kg soil in each plastic pot. These pots were incubated for 30 days after addition of slags and watered daily with distilled water to maintain 2–3 cm submergence
cate fertilizer made from blast furnace slag began to decrease sharply in the early 1970s. According to Nippon Slag Association's statistics on the use of slag in 2012, the total …
Steel slag is the main solid waste generated in the steel-making process, accounting for 15 to 20% of crude steel output [1]. ... Si, and P, as well as other plant-growth-friendly elements, and can be utilized to manufacture fertilizer [11,12]. Steel slag displays great potential for CO 2 sequestration owing to the large amount of CaO-based ...
The feasibility of steel slag used as an iron fertilizer was studied in a pot experiment with corn. Slag alone or acidified slag was added to two Fe-deficient calcareous soils at different rates ...