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The production of steel slag, a by-product of the steel refining, keeps increasing rapidly and it reached 90.42 million tons in China, but its comprehensive utilization ratio is only 22% and far ...
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A novel dry slag granulation process based on a spinning disc is being developed by CSIRO. This process utilises centrifugal force to break up molten slag into droplets, which pass through cooling air and finally solidify into granules. In this process the sensible heat of slag is recovered as hot air. In the present work, a previously ...
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the soil of the typical non-ferrous metal slag field in a dry-hot valley in Huili City, Sichuan Province, China. The contents of six heavy metals (Pb, As, Cu, Zn, Ni, Cr) and their associ-
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The objective of the present study was to investigate the characteristics of dry shrinkage and temperature shrinkage of cement-stabilized steel slag (CSS). The steel slag was intended to be utilized to replace the macadam in cement-stabilized base course to reduce dry shrinkage and temperature shrinkage of semi-rigid base materials.
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Gas quenching dry slag granulation process is an energy-saving environmental protection method for waste utilization and waste heat recovery of molten slag, and the molten slag is broken up by supersonic airflow into droplets in this process. This paper performed the numerical investigations on the breakup behavior of slag by the coupled level-set and …
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Many restrictions exist, however, on the utilization of steel slag. When steel slag is used internally, in steel plants, the most obvious problem is that of the enrichment of P and S (Drissen et al., 2009).The Bhilai Steel Plant in India was shut down because of its high S and P content (Das et al., 2007).The amounts of free lime and free MgO are …
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Alkali treatment improve the hydration activity of RO phases with a K m > 0.89.. Carbonation promotes the RO phases hydration due to the increase in Mg-leaching induced by CO 2 dissolution.. Substituting cement by ADC_SS achieves 20% increases in strength and 26% decreases in expansion rate.. The alkali excitation reaction of silica …
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Section snippets Materials. The chemical composition of fly ash (FA) and steel slag (SS) is shown in Table 1. Fig. 1(a) shows the main phase of FA, including quartz, mullite, calcium oxide and corundum, and Fig. 1(b) shows the main phase of SS including Ca 2 Fe 2 O 5, CaSiO 4, CaFeO 2, RO and Ca 12 Al 14 O 33.. The physical and …
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Experimental Investigation of Sintering Flue Gas Desulfurization with Steel Slag Using Dry CFB Method Zhou, Jian An; Zhong, Sheng Jun; Dang, Jun Xiang; Li, Xu; Abstract. Publication: Applied Mechanics and Materials.
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2.1. Materials. ASTM Type 1 cement, fine blast furnace slag powders, and coarse blast furnace slag aggregates were used in this study. The properties of each material are given in Table 1, Table 2 and Table 3, respectively.In general, concrete prepared using blast furnace slag aggregates has a similar compressive strength to concrete based on …
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A novel process consisting of dry slag granulation and endothermic reaction between reactive gases and granulated slag particles has been reported [109-115] that provides the possibility to recover the sensible and chemical energy in molten slag at a temperature over 1773 K. In the process, a rotary cup atomizer (RCA) can granulate molten slag ...
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General Kinematics Dry Slag Cooling Conveyor eliminates popcorn slag, slag pans, and apron conveyors. With GK's Dry Slag System, slag is conveyed, cooled indirectly, and …
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This paper describes the proposed mechanism for LMF and AOD dust formation and how dry slag granulation can overcome the issues associated with dumping and slow cooling. Benefits of dry slag atomization include the ability to directly stabilize the slag, enhance or make metals recovery easier and the opportunity to realize higher slag revenues. ...
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With the GK dry slag system, slag is conveyed and transformed into pancake slag on GK's patented cooling deck conveyor and can immediately be containerized or can be …
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Loibl offers specially designed slag conveyors that enable efficient cooling, transportation and discharge of the slag. Our robust solutions ensure that the slag is transported safely …
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In foreign countries, the investigations of the possibility of dry granulation of slags are carried out for a long time. According to this procedure, hot slags contact with cooling gases (in particular, with air) [6,7,8,9,10].The installations for slag dry granulation (ISDG) prove to be much more efficient because they enable us to (almost completely) …
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Efficiency in reutilization of Ca-based waste for carbon capture has gained high interest. Besides, the CO 2 capture mechanism will be influenced by several operating parameters. Observation of carbonation by Ca-based slags (desulfurization slag/De-S, electric arc furnace/EAF slag, and bottom ash/BA) in this study indicated that De-S had …
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The alkali exciters were NaOH solution, Na 2 SiO 3 solution, and calcium carbide slag. Na 2 SiO 3 was supplied by Henan Plutonium Run New Material Co., Ltd. The total alkali and total silica content of the anhydrous sodium silicate was ≥94%, NaOH was provided by Xinjiang Zhongtai Chemical Co., Ltd. with 98% analytical purity, and calcium …
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This paper performed the numerical investigations on the physical mechanism of ligament mode breakup of molten slag at the spinning disk edge by volume of fluid methodology, the piecewise line interface calculation scheme is utilized to track the air-slag interface location. Ligament spacing, length and tip diameter, and droplet size have been analyzed, a …
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There are also three methods of adding the alkaline component to slag: in an aqueous solution, in the solid state by mixing dry alkali powder with slag or in the solid state where dry alkali powder is ground together with the slag (Moseson et al., 2012; Wang et al., 1994; Yang et al., 2008).
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In stainless steel production, slag from argon oxygen decarburization (AOD) converters is dumped on to the ground and then slowly cooled. The slag undergoes phase transformation from β-dicalcium silicate (β-C2S) to γ-dicalcium silicate (γ-C2S) at approximately 500 °C to 450 °C, resulting in slag volume expansion, disintegration, and …
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introduce the Ecomaister-Hatch dry slag granulation process, and elaborate on future applications of the technology in the processing of argon oxygen decarburization and
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In dry slag conveying, the combustion residues are cooled with air instead of water. Loibl's LASH DRYPRON® efficiently separates fine and coarse ash, which …
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Dry slag extractor is the main equipment of slag removal system of coal-fired boiler in thermal power plant. It cools the high-temperature slag produced by the boiler, and …
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Based on these findings, the Li slag was treated by the dry digestion (DD) method followed by dissolution in water. The silicon leaching efficiency was significantly reduced from 50% in the direct leaching experiment to 5% in the DD experiment followed by dissolution, while the high leaching efficiency of lithium was maintained. ...
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In this investigation, the dry–wet-cycled sulfate resistance and hydration products of steam-cured and standard-cured steel-slag mortars were investigated. Strength loss, porosity change, and microstructure of mortars prepared by replacing 20% of cement with steel slag (SS) were analyzed and compared with pure cement (PC) mortars. The …
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Find out all of the information about the General Kinematics product: cooling conveyor . Contact a supplier or the parent company directly to get a quote or to find out a price or …
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Dry granulation is an attractive alternative to water quenching because of saving energy and reducing water consumption. In many dry granulation technologies, the high-temperature molten slag is atomized to slag particles, and the thermal energy from high-temperature slag particles is recovered by physical and chemical methods.
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General Kinematics Dry Slag Cooling Conveyor eliminates popcorn slag, slag pans, and apron conveyors. With GK's Dry Slag System, slag is conveyed, cooled indirectly, and …
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182 Journal of Sustainable Metallurgy (2019) 5:181–194 1 3 suchasairblasting,rotarydrum(s),andspinningdisc/ cup.Theslagdropletswerethenquenchedandsolidied
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