Effect of Arsenic and Copper+Arsenic on High Temperature Oxidation and Hot Shortness Behavior of C–Mn Steel

Xin, Wenbin; Song, Bo; Yang, Zhou; Yang, Yunfeng; Li, Longfei

doi:10.2355/isijinternational.isijint-2016-002

Cited by 16 publications

(8 citation statements)

References 19 publications

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“…Moreover, As was found to segregate t interface between the matrix and the oxide scale of the micro-alloyed steel [21]. It wa reported [9] that As and (As + Cu) accelerate the oxidation of C-Mn steels and induc shortness. Surface cracking is most severe at 1050 °C.…”

Section: Introductionmentioning

confidence: 98%

“…Surface cracking is most severe at 1050 °C. As promotes internal oxidation facilitates the grain-boundary oxidation at temperatures above 1000 °C [9]. In Fe-0.3 Cu alloys, the presence of up to 0.1 wt % As did not induce grain-boundary cracking The scrap received by steel plants comes from the recycling industries and should be pre-processed in several steps, including collecting, sorting and mechanical preparation via magnetic separation, fragmentation, physical separation, etc.…”

Section: Introductionmentioning

confidence: 99%

“…It is well known that routinely manufactured steel using recycled scrap leads to an overall increase in the impurity concentrations of Cu and Sn, in particular, though the presence of other impurities, like As and Sb, is not negligible [9][10][11][12]. Although there is a great deal of knowledge about residual Cu and Sn in steel, a shortage of recent studies on other, less common elements at residual levels has been identified [8].…”

Section: Introductionmentioning

confidence: 99%

“…Arsenic (As) can originate from several resources, such as complex iron ore, scrap steel, ferroalloys, and other furnace charges [9][10][11]. The effects of residual element As on the properties of steels are receiving more and more attention [9,[11][12][13][14][15][16][17]. In a micro-alloyed steel resulting from a compact strip production (CSP) process, As was found to segregate at the grain boundaries when the steel was annealed in the temperature range 950-1100 • C [18,19].…”

Section: Introductionmentioning

confidence: 99%

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Kinetics of Arsenic Surface Segregation in Scrap-Based Silicon Electrical Steel

Petrovič

2020

Metals

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The segregation kinetics of surface-active, residual elements are investigated in an in situ study of annealing scrap-based silicon electrical steel sheet where the arsenic (As) surface segregation is highlighted. During annealing in the temperature range of 300–950 °C, different kinds of interactions between the segregated residual elements were observed. Attractive interactions between the segregands produced co-segregation, e.g., between Sn and Sb, whereas repulsive interactions resulted in site competition, e.g., between Sn and As. These competing interactions are strongly time dependent. In spite of there being twice as much Sn compared to As in the bulk material, the As prevailed in the surface enrichments of the polycrystalline silicon steel at 950 °C. The intensity of the As surface segregation in the temperature range 800–950 °C is proportional to the calculated amount of γ-austenite phase in the (α + γ) steel matrix. The detected phenomenon of the As versus Sn site competition could be valuable for the texture design and surface engineering of silicon steels with a thermodynamically stable two-phase (α + γ) region.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Kinetics of Arsenic Surface Segregation in Scrap-Based Silicon Electrical Steel

Petrovič

2020

Metals

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“…For example, arsenic reduces the quality of raw materials, affects the extraction of metal, interferes with the purity of the product, and poses serious environmental hazards [1]. Arsenic has an adverse effect on steel; for instance, the surface hot shortness increases, and the reduction of area and impact toughness decrease with the increase of arsenic content in steel [3][4][5][6]. Under the hot rolling or welding conditions, the arsenic in the steel leads to the increase in the content of arsenic at grain boundaries and the expansion of welding cracks [4,[7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Arsenic Removal from Arsenopyrite-Bearing Iron Ore and Arsenic Recovery from Dust Ash by Roasting Method

Cheng

Zhang

2019

Processes

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In most cases, arsenic is an unfavorable element in metallurgical processes. The mechanism of arsenic removal was investigated through roasting experiments performed on arsenopyrite-bearing iron ore. Thermodynamic calculation of arsenic recovery was carried out by FactSage 7.0 software (Thermfact/CRCT, Montreal, Canada; GTT-Technologies, Ahern, Germany). Moreover, the arsenic residues in dust ash were recovered by roasting dust ash in a reducing atmosphere. Furthermore, the corresponding chemical properties of the roasted ore and dust ash were determined by X-ray diffraction, inductively coupled plasma atomic emission spectrometry, and scanning electron microscopy, coupled with energy-dispersive X-ray spectroscopy. The experimental results revealed that the arsenic in arsenopyrite-bearing iron ore can be removed in the form of As 2 O 3 (g) in an air or nitrogen atmosphere by a roasting method. The efficiency of arsenic removal through roasting in air was found to be less than that in nitrogen atmosphere. The method of roasting in a reducing atmosphere is feasible for arsenic recovery from dust ash. When the carbon mass ratio in dust ash is 1.83%, the arsenic removal products is almost volatilized and recovered in the form of As 2 O 3 (g).Processes 2019, 7, 754 2 of 12 decreasing greatly in the earth, and arsenic-bearing ore needs to be comprehensively utilized through ore blending. Some metallurgical enterprises at home and abroad, such as Peru, Chile, Philippines, France, Mexico, and China, have adopted some arsenic-bearing ore in the metallurgical industry [11]. When these arsenic-bearing ores are used, they are faced with the problem of arsenic removal from ores and the problem of arsenic-bearing dust treatment from the point of view of environmental protection.Arsenic can be removed from arsenic-bearing ore by a roasting or sintering method due to the volatile nature of arsenic and its compounds [12]; thus, some scholars have explored the appropriate arsenic removal conditions by performing roasting or sintering experiments. Yin et al. and Lu et al. studied arsenic removal from copper-silver ore using a roasting method [13,14], and the impact of different parameters (e.g., temperature, atmosphere, and roasting time) on the arsenic removal ratio was also evaluated. Lu et al. investigated arsenic removal from arsenic-bearing iron ore during the sintering process [15,16]. The effects of temperature, bed depth, gas pressure, and coal ratio on arsenic removal during the sintering process were studied, and the reasonable technical parameters were obtained. In addition to the arsenic removal tests by roasting and sintering methods, a number of scholars also carried out thermodynamic calculations on arsenic removal, and discussed the arsenic-bearing products and suitable conditions for arsenic removal. Chakraborti and Lynch analyzed the As-S-O vapor system [17] and further identified the importance of bed depth in the rapid release of arsenic from arsenical materials under an oxidizing atmosphere. Contreras et al. ev...

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