Recovery of Valuable Metals from Spent Lithium‐Ion ...
Recovery of Valuable Metals from Spent Lithium‐Ion Batteries by Smelting Reduction Process Based on MnO‐SiO 2 ‐Al 2 O 3 Slag System Ren Guoxing. Changsha Research Institute of Mining & Metallurgy, Changsha, 410012 Hunan, China.
Results Presentation
disrupted supply from Brazil and Australia; Coking coal prices also firmed up in Mar'19 Steel prices have begun rebounding amidst raw material cost push and improved sentiments with jump in Chinese domestic demand 50 70 90 110 100 150 200 250 Apr-17 Oct-17 Apr-18 Oct-18 Apr-19 Premium HCC - China CFR Iron Ore, Fe 62%, China CFR (RHS) 40 55 70 85
Basic Oxygen Furnace Gas Recovery and Cleaning System ...
Fig 1 Schematic of gas recovery system in a basic oxygen furnace. Suppressed combustion systems can be largely divided into two types namely (i) the OG-type and (ii) the IC (IRSID-CAFL) type. The OG type system basically has no space between the throat and the hood skirt, and controls pressure at the closed throat.
Webinar presentation Markers: Med Basin, Persian Gulf ...
clinker. Japan remained the largest exporter of slag In the 1Q2021, on a yearly basis, ex-works prices showed wide regional variations, with Western Europe showing a sharp recovery Cement prices are expected to decline while clinker prices are showing a robust increase The CW index price for gray cement is expected to
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Slag in Tangshan Steel 40.30 15.38 12.73 2.54 9.05 1.88 14.06 1.01 Slag in Angang Steel 45.37 8.84 8.79 3.29 7.98 2.31 21.38 0.72 Slag in Baoshan Steel 41.42 8.74 7.66 1.04 10.29 3.03 21.58 1.66 The main mineral components of steel slag are tricalcium silicate, dicalcium silicate, dicalcium
Phosphorus partitioning and recovery of low-phosphorus ...
The Linz-Donawitz (LD) steelmaking process produces LD slag at a rate of about 125 kg/t. After metallic scrap recovery, the non-metallic LD slag is rejected because its physical/chemical properties are unsuitable for recycling. X-ray diffraction (XRD) studies have indicated that non-metallic LD slag contains a substantial quantity of mineral phases such as di- and tricalcium silicates.
Cutting-Edge By-Product Recycling for Iron- & Steelmaking ...
Ferrous briquetting – Recycling of by-products. Our solution for recycling of the by-products uses a cold briquetting process, with proven equipment and application of a suitable binder selected for each application, to ensure highest possible product quality of briquettes that can be charged into a DRI plant, blast furnace, Corex or LD (BOF) converter.
Mixture of Granite Waste and LD Steel Slag for Use in ...
A great amount of granite waste and steel slag is generated daily in Brazil, being those constituted mainly by SiO2 and CaO, respectively. The objective of this work was to characterize the ...
(PDF) A Kinetics Study on the Hydrometallurgical Recovery ...
In this research, recovery of vanadium from LD (Linz– Donawitz) converter slag of steelmaking plant was investigated. The leaching residue was characterized by XRD and XRF techniques. The maximum vanadium recovery was achieved at optimum leaching conditions of 70 °C, S/L: 1/15, sodium hydroxide concentration: 3 M and leaching time: 150 minutes.
Tata Steel - Natural capital
Blast furnace slag and steelmaking (LD) slag utilisation: Annually, Tata Steel handles ~17 MnTPA of by-products, which are converted and sold across 20+ product categories. The key solid waste generated during an integrated steel plant operation are the blast furnace and LD slag, which, if not utilised would require to be stored in engineered ...
PRODUCTION, CHARACTERISTICS AND USE OF …
The densities of metal and liquid slag are significantly different, so the slag will be separated from the metal. The density of the ferrochrome slag is between 2.5- 2.8 g/cm 3 and that of ferrochrome 6.8 g/cm 3. The viscos-ity of slag is a function of the pressure and temperature. The viscosity also has an …
Overview Of The VILD-project, Vanadium Recovery From LD ...
The Swedish iron ore contains about 0.1%V. In a blast furnace the vanadium is reduced to the hot metal which has a V-content of about 0.3%. During the LD-process, the vanadium is oxidised and ends up in the LD-slag. The high V-content, 2-3%V in the slag leads to a very limited external application of the slag in Sweden. At the same time it is a huge loss of an important resource.
Virtual conference information for Global Slag Conference ...
2.10 Presentation 9: 'Enhancing the value of LD Slag fines through sustainable means – Yellow gypsum: a green product from non-metallic LD Slag fines and its advantages to agriculture soils,' Shrenivas Ashrit, Tata Steel Limited 2.25 Q&A - 5 mins. 2.30 Moderator's comments 2.35 Session end. 2.35 onwards - 'Exhibition time' and Zoom hangout
Slag recycling - recovery
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. 92 % of the approximately 8.8 Mta of blast furnace slag …
RECOMMENDED GUIDELINES FOR IRON & STEEL SECTOR …
Doc. No: SG/39, Rev no: 00 Page 4 of 32 3.5 Auxiliary units: 3.5.1 Ladle preparation of all steel &HM ladles minor, major repairs, Preheating& preparation activities done to smooth batch process of steel making 3.5.2 Slag yard: All BOF & Secondary steel slag handling in liquid condition 3.5.3 Scrap yard: Receiving & Preparing of various scrap kinds to feed BOF
Recovery of heavy metals from Indian LD slag using ...
Recovery of heavy metals from Indian LD slag using acidophilic and heterotrophic bacteria: A comparative study Neha Garg1, Suparna Mukherji1 1Environmental Science and Engineering Department, Indian Institute of Technology, Bombay, Powai, 400076, India Keywords: Bioleaching, Indian steel slag, LD slag, Acidithiobacillus ferrooxidans, Pseudomonas aeruginosa
Optimization and dissolution kinetics of vanadium recovery ...
Alkaline roasting-alkaline leaching process was used to recover vanadium from LD (Linz Donawitz) converter slag. The independent leaching parameters investigated were liquid to solid ratio (L/S) (10–20 mL/g), temperature (40–60°C), NaOH concentration (1.0–3.0 M), and time (60–120 minutes). Response surface methodology (RSM) was utilized to optimize the leaching parameters and …
KBR awarded technology contract for ash re-crystallization ...
KBR, Inc. (Houston) has been awarded a technology contract by Valmet AB for the engineering and supply of an Ash Re-Crystallization plant for LD Cellulose S.A.'s 500,000-ton/yr pulp-mill project located in Minas Gerais, Brazil.. Under this contract, KBR will provide the license, engineering design and proprietary equipment using its leading Ecoplanning crystallization technology for the new ...
Mixture of Granite Waste and LD Steel Slag for Use in ...
A great amount of granite waste and steel slag is generated daily in Brazil, being those constituted mainly by SiO2 and CaO, respectively. The objective of this work was to characterize the material formed after melting and cooling of the mixture of granite waste and LD steel slag, with basicity (CaO/SiO2) of 1.0, aiming to evaluate the technical feasibility of this to the Portland cement ...
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Since large quantities of lime is used in LD-steelmaking and most of the CaO exists in bound crystalline form with other constituents in slag but LD slag can also contain pockets of free lime (CaO). This free lime can absorb water to form hydrated lime Ca(OH) which expands and swell, making the LD slag volumetrically unstable overtime.
LafargeHolcim to leave Brazil? - Cement industry news from ...
Written by David Perilli, Global Cement 21 April 2021. Print. LafargeHolcim retained its ability to surprise this week with the news that it may be making preparations to leave Brazil. Local press in Minas Gerais revealed on 20 April 2021 that the company was …
Review on the innovative uses of steel slag for waste ...
The composition of the ladle slag (LD) differs from those of BOF and EAF slag. ... International Seminar on Application of Steel Slag, 2010. Belo Horizonte – MG – Brazil. ... Blanpain B, Guo M (2017) Valorization of BOF steel slag by reduction and phase modification: metal recovery and slag valorization. Metall Mater Trans B, 48(3):1602–1612.
International comparison of Brazilian regulatory standards ...
In Brazil's most populous cities, São Paulo and Rio de Janeiro, PM 2.5 concentrations exceed WHO guidelines by 60% and 360%, respectively. LD vehicles, particularly those powered with diesel engines, are an important source of primary PM emissions, and emissions of HC and NO X from the LD fleet also contribute to the formation of secondary ...
Recovery of high grade iron compounds from LD slag by ...
The combination of Low and High Intensity Magnetic Separation (LIMS and HIMS) of ground LD slag at 63 mu m in wet process may recover ferromagnetic particles (iron oxides) at LIMS and paramagnetic particles at HIMS, while the non-magnetic fraction contains mostly calcium silicates.From this investigation, two flow-sheets of treatment of LD slag ...
Factors confine the productivity of LD - Converter
The LD-Converter is the key component in the steel production process in an integrated steel plant like Pakistan Steel. The productivity of a steel plant is dependent to a large extent on the availability of the Converter (BOF) for production. A view of working platform of 130 ton LD-Converter (Elevation + 8 meter).
Recycling our waste | ArcelorMittal
One of these is Linz-Donawitz (LD) slag. At a major steel unit, such as the one in Tubarão, Brazil, we produce as much as 800,000 tonnes of LD slag every year, and ArcelorMittal has been researching ways to re-use this material. After a comprehensive study of its properties, we now make as many as 30 new products from LD slag.
(PDF) Recycling of LD Slag
Recycling of LD slag having 45-50% lime is still a challenging task because of its high phosphorus (P2O5) content (>3.0%) which makes it unfit to be used as a flux in iron and steelmaking processes.
Investing in an eco-friendly alternative to cotton and ...
This will create a pipeline of robust investments that can accelerate the Brazilian economy's recovery from COVID-19. The financing will increase sustainability standards for Brazil's pulp industry and the plantation forestry sectors through LD Celulose's adoption of IFC's Environmental and Social Performance Standards.
Management of solid wastes from steelmaking and ...
The LD slag has a generation of approximately 200 ... Globally, the main focus is placed on zinc recovery. In Brazil, however, as the generated dust still contains low levels of zinc, proposals are normally aimed at the iron recovery. Hence, ...
Characterization of steel slag by SEM-EDS, XRD, and INAA ...
The steel slag composite sample of the Linz-Donawitz (LD) process was collected in a steelwork localized in the Iron Quadrangle, Minas Gerais, Brazil. The steel slag sample was characterized by instrumental neutron activation analysis (INAA), using the nuclear research reactor TRIGA MARK I …