By making research easy to access, and puts the academic needs of the researchers before the business interests of publishers. Although the construction industry does use some slag as an aggregate, most is simply discarded. It is a recovered industrial by-product of an iron blast furnace. SSS, stainless steel slag; SS, steel slag; LS, ladle slag; W, wollastonite; NP, neutralization power; RR, reactivity rate, expresses the percentage of corrective material that reacts in 3 months; ECC, effective calcium carbonate. The steel industry generates large volumes of slag, which are considered as an environmental problem; it is necessary to increase the use of this waste in new processes to avoid disposal in landfills. Silicon may bring benefits to plants such as reduction of foliar diseases; improvement in pest control; increase in photosynthetic capacity due to the silicon benefit to the architectural activity of the plant, leaving the leaves more upright [32]; and improvement in the use of water by the plant [35]. Steel LD slag can also be used in fertilizers for agricultural applications (Das et al., 2007). When the slag is cooled through a process called vitrification, it crystallizes, forming … Chemically, blast-furnace slag is the nonmetallic Slag - Usage • Slag aggregates are approved for a number of uses although there are restrictions. The increase of heavy metals, such as cadmium (Cd), chromium (Cr), nickel (Ni), mercury (Hg), lead (Pb), and arsenic (As), was insignificant compared to the application of 8 t/ha [32]. The steel slag, ladle slag, and stainless steel slag (chemical characterization in Tables 1 and 2) applied as soil acidity correctives, at the dose necessary to raise the initial soil saturation to 70%, did not change the soil metals content evaluated at 12 and 23 months after the application of residues, and the Pb content decreased with the application of residues [7]. Steel LD slag can also be used in fertilizers for agricultural applications (Das et al., 2007). Slag processing GGBS; How Is Slag Used? The lighter slag floats on the melt and can absorb and bind unwanted elements from the steel. Slag-based fertilizers applied in Si-deficient paddy soil improved rice growth, productivity, and brown spot resistance [39]. So, this chapter aims to emphasize the main aspects of the application of slags to soil chemical attributes as elevation of pH and neutralization of Al3+ toxic in acid soils and increase nutrient content as phosphorus, calcium, magnesium, some micronutrients, and silicon. Contact our London head office or media team here. Slag cement is a hydraulic cement formed when granulated blast furnace slag (GGBFS) is ground to suitable fineness and is used to replace a portion of portland cement. Help us write another book on this subject and reach those readers. Especially in densely populated The chemical evaluation of soil acidity correctives for agricultural purposes consists of the following determinations: neutralization power (NP) and calcium and magnesium contents [8]. The presence of heavy metals in steel slag is one of the problems with its use that at high levels, it can become toxic and limit its use in agricultural activities. 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