المنتجات الساخنة
Mechanism and Prevention of Disintegration of AOD Stainless Steel Slag
网页2013年4月1日 AOD (Argon Oxygen Decarburization) slag is a by-product of the stainless steel refining process. The leaching toxicity of chromium from AOD slag cannot be ignored in the recycling process of the AOD slag. To assess the leaching toxicity of the AOD slag,
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AOD slag treatments to recover metal and to prevent
网页production. The slag dusting should also be prevented that will facilitate slag handling and uses of the AOD slag as building materials.
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Mechanism and Prevention of Disintegration of AOD Stainless Steel Slag
网页2013年4月1日 Now more than 80% stainless steels are produced by AOD refining, which is becoming the main refining means. Higher basicity and larger amount of slag are
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AOD slag treatments to recover metal and to
网页2005年1月1日 Abstract. Laboratory treatment tests of AOD slag from stainless steelmaking have been carried out by MiMeR, Minerals and
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Carbonation of argon oxygen decarburization stainless steel slag
网页2020年5月20日 AOD slag in the present work was directly collected from the slag tank under the AOD furnace after stainless-steel refining. The AOD slag was disintegrated
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Treatments of AOD slag to produce aggregates for road
网页2011年1月1日 PDF On Jan 1, 2011, Qixing Yang and others published Treatments of AOD slag to produce aggregates for road construction Find, read and cite all the
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Toxicity assessment of the utilization of AOD slag as a
网页2021年12月15日 The use of AOD slag as mineral fertilizer has aroused rare attention in plant nutrition and toxicology. AOD slag has the chemical compositions of CaO, SiO 2,
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Treatments of AOD Slag to Produce Aggregates for
网页tapped AOD slag may result in slag disintegration or dusting, which is related mainly to formations of dicalcium silicate (C2S). The C2S may form when the content ratio of CaO
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Dissolution Behavior of Fluorine from AOD Slag after Treatments
网页2014年7月1日 PDF AOD slag samples from steel works of Outokumpu Stainless Company were used to study F-dissolution relating to treatments for volume
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Effect of Modified Argon Oxygen Decarburization (AOD) Stainless Steel
网页The stainless steel slag of argon oxygen decarburization (AOD) is a kind of alkaline waste with cementitious activity phase, which can change the β C 2 S to γ C 2 S phase in the
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Mechanism and Prevention of Disintegration of AOD Stainless Steel Slag
网页2013年4月1日 AOD (argon oxygen decarburization) slag, which is the by-product of the stainless steel refining process, is a recyclable slag because of its high content of calcium and silicon. The leaching toxicity cannot be ignored in the recycling process because the slag contains a certain amount of Cr.
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Carbonation of argon oxygen decarburization stainless steel slag
网页2020年5月20日 1. Introduction. Argon oxygen decarburization (AOD) slag, which is generated during the stainless-steel refining process, is a by-product of the steel industry (Li et al., 2017a).AOD slag is a kind of alkaline material characterized by a dominance of Ca-bearing silicate phases, and the minerals include γ-dicalcium silicate, fluorite and
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Mechanism and Prevention of Disintegration of AOD Stainless Steel Slag
网页2013年4月1日 The disintegrating problem during the cooling process of AOD stainless steel slag is caused by the 2CaO SiO phase transformation from α'-C S to γ-C S. By means of adjusting the basicity of the AOD stainless steel slag from 2 to 1. 5 by adding quartz sand, disintegrating of slag was prevented. But the adding amount must arrive at 15% which
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AOD slag treatments to recover metal and to prevent
网页The solid AOD slag of around 1.2 kg was charged in the MgO crucible and a thermocouple was just above the slag to measure the temperature during heating. By referring to the temperature
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Life cycle assessment to evaluate the environmental
网页2018年2月27日 The valorisation of AOD-slag to produce new construction materials is a promising route to lower the environmental impacts of cement and concrete industries. but further treatments are required in order to activate its binding properties. Recent research investigates the potential of AOD-slag and other crystalline SSS to be used as binders
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Mechanism and Prevention of Disintegration of AOD Stainless Steel Slag
网页2013年4月1日 The disintegrating mechanism of the AOD slag was analyzed in detail, and experimental research on prevention of disintegrating of AOD stainless steel slag was developed by adjusting the basicity of the slag and adding the quartz sand and borax. Yang Q X, Engström F, Tossavainen M, et al. AOD Slag Treatments to Recover Metal
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Evolution of Non-Metallic Inclusions in Al-Killed Stainless Steelmaking
网页2021年3月31日 The evolution of non-metallic inclusions (> 10 µm) for the Al-killed steel in the stainless steelmaking is described.The effects of the slag basicity at the AOD/VOD process, Ca treatment, raw materials (dolomite and spent refractory), reoxidation and vacuum condition on the evolution of the non-metallic inclusion were investigated using
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DISSOLUTION BEHAVIOR OF FLUORINE IN AOD SLAG
网页The AOD slag samples after the modifications gained the volume stability and mechanical properties required for its utilization as construction materials [2-4].
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Dissolution behavior of fluorine in AOD slag from the
网页@inproceedings{Yang2012DissolutionBO, title={Dissolution behavior of fluorine in AOD slag from the production of stainless steel after treatment for volume stabilization}, author={Qixing Yang and Fredrik Engstr{\"o}m and Bo Bj{\"o}rkman and Jian Li Li and An-jun Xu}, year={2012} } Qixing Yang, F. Engström, +2 authors An-jun Xu; Published 2012
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Dissolution Behavior of Fluorine from AOD Slag after Treatments
网页AOD slag samples from steel works of Outokumpu Stainless Company were used to study F-dissolution relating to treatments for volume stabilization. Results from the slag tests and sample characterizations indicate that the slag re-melting with or without reduction and granulation with either water or gas have rather small effects on F leaching, as well as
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Accelerated mineral carbonation of stainless steel slags for
网页2013年9月1日 AOD slag Ca-conversion increased from 30% to 49%, and pH decreased from 10.6 to 10.1, while CC slag Ca-conversion increased from 61% to 73% and pH decreased from 10.8 to 9.9. The enhancement effect of ultrasound was attributed to the removal of passivating layers (precipitated calcium carbonate and depleted silica) that
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Carbonation of argon oxygen decarburization stainless steel slag
网页2020年5月20日 This study focuses on evaluating the carbonation potential of argon oxygen decarburization (AOD) slag and analyzing influence mechanism of carbonation on chromium leachability.Static thin-film accelerated carbonation and sequential leaching tests were carried out. Results show that the liquid to solid (L/S) ratio was the most influencing
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A Novel “Two-Step” γ → α′L → β Phase Springer
网页2023年2月3日 Regulating the phase transformation of γ → β in dicalcium silicate (C 2 S) can effectively improve the hydration activity and recycling rate of AOD slag; however, the evolution law for γ → β in C 2 S has not been extensively investigated. In this study, a novel “two-step” γ → α′ L → β phase transformation method in C 2 S was designed based on
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Evolution of Non-Metallic Inclusions in Al-Killed Stainless Steelmaking
网页2021年3月31日 The evolution of non-metallic inclusions (> 10 µm) for the Al-killed steel in the stainless steelmaking is described.The effects of the slag basicity at the AOD/VOD process, Ca treatment, raw materials (dolomite and spent refractory), reoxidation and vacuum condition on the evolution of the non-metallic inclusion were investigated using
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A Review of Circular Economy Prospects for Stainless
网页Then the slag is tapped to a slag pot, and lime and uorspar are added into the converter to form basic liquid slag for a short desulfurization treatment with intensive Ar stirring. In addition to the composition of AOD slag in Table 1, the slag after reduction can contain several percent uorspar. After tapping into the ladle, CaO and CaF 2 are
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Dissolution Behavior of Fluorine from AOD Slag afte r
网页2016年9月29日 AOD slag [4]. Early work on the AOD slag carried ou t by some of the present authors aimed mainly at the dusting prevention [2, 3]. The present work is thus undertaken to investigate dissolution behavior of F from AOD slag treated for dusting prevention a nd by the plant slag granulation.
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Fertilizer Efficiency and Risk Assessment of the Utilization of AOD
网页2022年1月29日 Argon oxygen decarburization (AOD) slag is the by-product of the stainless steel refining process, which has caused considerable environmental stress. In this work, the utilization of AOD slag as mineral fertilizer for alfalfa (Medicago sativa L.) and perennial ryegrass (Lolium perenne L.) planting were investigated by pot experiments. The morpho
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Dissolution behavior of fluorine in AOD slag from the
网页@inproceedings{Yang2012DissolutionBO, title={Dissolution behavior of fluorine in AOD slag from the production of stainless steel after treatment for volume stabilization}, author={Qixing Yang and Fredrik Engstr{\"o}m and Bo Bj{\"o}rkman and Jian Li Li and An-jun Xu}, year={2012} } Qixing Yang, F. Engström, +2 authors An-jun Xu; Published 2012
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Dissolution Behavior of Fluorine from AOD Slag after Treatments
网页AOD slag samples from steel works of Outokumpu Stainless Company were used to study F-dissolution relating to treatments for volume stabilization. Results from the slag tests and sample characterizations indicate that the slag re-melting with or without reduction and granulation with either water or gas have rather small effects on F leaching, as well as
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AOD不锈钢渣粉化机理及抑制粉化实验研究.pdf 5页 原创力文档
网页2015年11月30日 Utilization 2015 年 7 月 AOD 不锈钢渣粉化机理及抑制粉化实验研究 1 2 1 2 2 赵海泉 ， ，齐渊洪 ，史永林 ，冯焕林 （ 钢铁研究总院 先进钢铁流程及材料国家重点实验室 ，北京 ； 山西太钢不锈 钢股份有限公司 技术中心，太原 ） 1. 100081
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