System analysis of slag utilisation from vanadium recovery in an integrated steel plant

Lundkvist, Katarina; Brämming, Mats; Larsson, Mikael; Samuelsson, Caisa

doi:10.1016/j.jclepro.2012.09.002

Cited by 41 publications

(18 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A recent analysis of BOF slag recycle limits highlighted the role of phosphorus and permitted limit in hot metal and BOF slag practice. 43) Low phosphorus loading from incoming raw materials favors higher recycle rates leading to lower BF coke rate and lower limestone consumption. Other elements including vanadium and chromium have also been reported to be elements limiting BOF slag recycle.…”

Section: Discussionmentioning

confidence: 99%

Role of Ferrous Raw Materials in the Energy Efficiency of Integrated Steelmaking

Hooey

Riesbeck²,

Wikström

et al. 2014

ISIJ Int.

View full text Add to dashboard Cite

The role of ferrous raw materials and iron ore agglomeration in energy consumption of integrated steelmaking has been evaluated using a system-wide model. Four steelplant cases were defined: typical European steelplant with sinterplant; Nordic steelplant with sinterplant; European steelplant with sinter:pellet ratio of 50%, and Nordic steelplant charging pellets and a small amount of briquettes. Energy consumption in the mining system were estimated from published statistics at 150 MJ/t for lump ore and sinter fines, 650 MJ/t for pellets made from magnetite and 1 050 MJ/t for pellets made from hematite. An integrated steelplant model including all major unit operations was used to calculate overall system energy consumption from iron ore mining to hot rolled coil. Adjustments were made accounting for energy benefit of ground granulated blast furnace slag in cement production, energy required for cement production required for briquetting, and excess BF and BOF gas producing electricity in a 32% efficient power plant. The system-wide net adjusted energy in the first three steeplant cases showed marginal improvement with use of high grade sinter fines and decrease of pellet/sinter ratio to 50% compared to typical European case. Nordic steelplant charging pellets and briquettes had a reduction in system-wide energy of 5% to 8% for charging pellets from hematite or magnetite respectively compared to the typical European steelplant charging sinter and pellets made from hematite ore. Replacement of sinter with pellets was mainly responsible for the improvement with smaller contributions from magnetite ore in pelletizing.

show abstract

Section: Discussionmentioning

confidence: 99%

Role of Ferrous Raw Materials in the Energy Efficiency of Integrated Steelmaking

Hooey

Riesbeck²,

Wikström

et al. 2014

ISIJ Int.

View full text Add to dashboard Cite

show abstract

“…About 12–15 wt% of V 2 O 5 and 2–5 wt% of Cr 2 O 3 can be contained in the vanadium slags . The conventional industrial practice for extracting vanadium from vanadium slag involves an oxidation roasting of Na 2 CO 3 –Na 2 SO 4 –NaCl‐added vanadium slag powder in air at about 800 °C followed by a hot water leaching .…”

Section: Introductionmentioning

confidence: 99%

An Innovative Method to Increase Vanadium Extraction from Vanadium Slag by Increasing the Porosity of Roasted Pellet

Fang

Shen

et al. 2020

steel research int.

View full text Add to dashboard Cite

Vanadium extraction from vanadium slag is significantly increased using only NaOH‐added pellet roasting to replace the traditional powder roasting previously. To solve some issues relevant to pellet holes, an innovation process to increase vanadium extraction from vanadium slag by increasing the porosity of roasted pellet is proposed presently. For the pellet added only with Na2CO3 and roasted at 800 °C for 2 h, the melting point of Na2CO3, the pellet porosity, and the vanadium extraction are 851 °C, 6.3%, and 74%, respectively. For the roasted pellet with an optimal NaOH–Na2CO3 additive having a mole ratio of NaOH/(NaOH + Na2CO3) of 0.9, the melting point of additive, the pellet porosity, and the vanadium extraction are 300 °C, 29.6%, and 98.7%, respectively. It is confirmed that the vanadium extraction is proportional to the pellet porosity, maximum of which can be attained by optimizing mole ratio of NaOH to Na2CO3. Both the low melting point and the large alkaline of added NaOH–Na2CO3 mixture are the two possible reasons resulting in the formation of pellet holes.

show abstract

“…Nadirov et al studied on the recovery of value metals such as zinc, copper, and iron from copper smelter slag by ammonium chloride treatment [7]. Furthermore, manifold researches for recovery of valuable resources such as high grade iron, cobalt, nickel, and vanadium were carried out to date [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Superconducting magnetic separation of ground steel slag powder for recovery of resources

Kwon¹,

Kim²,

Ha³

et al. 2017

Progress in Superconductivity and Cryogenics

View full text Add to dashboard Cite

Steel slag has been considered as an industrial waste. A huge amount of slag is produced as a byproduct and the steel slag usually has been dumped in a landfill site. However the steel slag contains valuable resources such as iron, copper, manganese, and magnesium. Superconducting magnetic separation has been applied on recovery of the valuable resources from the steel slag and this process also has intended to reduce the waste to be dumped. Cryo-cooled Nb-Ti superconducting magnet with 100 mm bore and 600 mm of height was used as the magnetic separator. The separating efficiency was evaluated in the function of magnetic field. A steel slag was ground and analyzed for the composition. Iron containing minerals were successfully concentrated from less iron containing portion. The separation efficiency was highly dependent on the particle size giving higher separating efficiency with finer particle. The magnetic field also effects on the separation ratio. Current study showed that an appropriate grinding of slag and magnetic separation lead to the recovery of metal resources from steel slag waste rather than dumping all of the volume.

show abstract

System analysis of slag utilisation from vanadium recovery in an integrated steel plant

Cited by 41 publications

References 20 publications

Role of Ferrous Raw Materials in the Energy Efficiency of Integrated Steelmaking

Role of Ferrous Raw Materials in the Energy Efficiency of Integrated Steelmaking

An Innovative Method to Increase Vanadium Extraction from Vanadium Slag by Increasing the Porosity of Roasted Pellet

Superconducting magnetic separation of ground steel slag powder for recovery of resources

Contact Info

Product

Resources

About