Double-slag refining process

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August undefined, 2024

WebThe principle of tin smelting is the chemical reduction of tin oxide by heating with carbon to produce tin metal and carbon dioxide gas. In practice, the furnace feed contains the tin oxide concentrate, carbon in the form of anthracite coal or coke, and limestone to act as a flux and a slag-producing agent. In a typical reverberatory process ... WebMar 1, 2009 · A study on the production of low phosphorus steel by double slag operation in 210 t converter was carried out. A phosphorus content of less than 0.005% (mass percent) was obtained before tapping. About 80% phosphorus could be removed by the first slag after 5 min. High Fe3+ content and high basicity in the first slag were in favor of …

BACKGROUND REPORT SECONDARY COPPER SMELTING, …

WebNov 1, 2024 · Global Nickel (Ni) smelters’ have been experiencing profit losses for nearly a decade due to the 2008 recession still impacting the industry, oversupply, and fluctuating ore quality. This paper proposes to aid the Ni smelters with the lattermost issue, presenting an optimum pricing index model for purchasing raw Ni ore materials. The model is … Webearly stage of converter steelmaking process and conclu-ded that the double slag-retaining method can reduce the consumption of raw materials by lowering the phosphorus content of steel. K. Yoshida[11] developed a simple refining process (SRP) by using two 250t capacity top and bottom Aonan Zhao, Liqiang Zhang, Naqash Ali, Chaojie Zhang col tina hayes

Converter Process - an overview ScienceDirect Topics

WebAug 1, 2013 · To produce the steel with phosphorus less than 0.007% (mass percent), the double slag process has been optimized in basic oxygen furnace (BOF). … WebAug 8, 2024 · The kinetic investigation of the dephosphorization in the new double slag converter steelmaking process was carried out based on the coupled reactions model combining with a heat balance temperature model for the 220-ton industrial experiment. The calculated results of [%C], [%Si], [%P] in the hot metal, and the slag compositions are in … WebElectric Arc Furnace Process. In the electric arc furnace process, the electric arc furnace oxidizing slag is firstly produced when the iron scrap is melted and refined into steel, and then the electric arc furnace reducing slag is produced in the ladle refining furnace. From: Carbon Dioxide Sequestration in Cementitious Construction Materials ... colt industries sealant

Modeling of Ladle Refining Process Considering Mixing and …

Electric Arc Furnace Process - an overview - ScienceDirect

WebMay 1, 2024 · For current converter steelmaking method (such as single slag method, double slag method and duplex process), the Si content of hot metal is below 1.0 mass%. When Si content of hot metal is higher than 1 mass%, more lime should be added to modify the basicity of slag. ... After refining in BOF 1, the silicon content of the semi-steel is … Weba slag, which is skimmed off. Slags are processed in an electric furnace prior to discard to recover nickel. Process gases are cooled, and particulates are then removed by gas … colt industries incWebrefining of lead compounds to produce lead. Modern direct smelting processes include QSL, Kivcet, AUSMELT, and TBRC. Primary Lead Processing The conventional … colt inbred family

"WebElectric Arc Furnace Process. In the electric arc furnace process, the electric arc furnace oxidizing slag is firstly produced when the iron scrap is melted and refined into steel, and … " - Double-slag refining process

Double-slag refining process

Lead and Zinc Smelting - International Finance Corporation

Electroslag remelting (ESR), also known as electro-flux remelting, is a process of remelting and refining steel and other alloys for mission-critical applications in aircraft, thermal power stations, nuclear power plants, military technology and others. The electroslag remelting (ESR) process is used to remelt and refine steels a… WebApr 8, 2024 · A tapping process model of the steel from the basic oxygen furnace (BOF) addressing the reactions in the ladle is proposed. In the model, the effective equilibrium reaction zone (EERZ) method is applied to describe the steel/slag interfacial reaction. The equilibrium reactions in the bulk steel (steel/inclusion/lining wear) and slag (liquid …

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WebMentioning: 2 - Considering the importance of dephosphorization process in ironmaking and steelmaking, this paper attempted to estimate the phosphate capacities of different systems. Mass triangle model could approach the properties of multi-component systems without the parameter for every component. This present work also extended the mass triangle …

WebJun 21, 2024 · DRP is a converter-type molten-iron pretreatment process that allows extra scrap iron to be used in converters, which results in fewer CO 2 emissions in … WebJan 5, 2024 · A low-basicity slag (~1.5–2.0) in the dephosphorization stage is required in double-slag process. The dephosphorization ratio reached a maximum of 71 % when the slag basicity was 1.7. The end ...

WebMar 2, 2024 · Therefore, the steelmaking process is divided into two steps: primary smelting and refining. Primary refining: The charge is melted, dephosphorized, decarburized and main alloyed in an oxidizing atmosphere furnace. Refining: Degas, deoxidize, desulfurize, remove inclusions and fine-tune components in a container of vacuum, inert gas or … http://www.aimnet.it/la_metallurgia_italiana/2024/nov-dic/zhao.pdf

WebThe remaining slag is cooled, ground, and combined with water and chemicals that facilitate flotation. ... dewatering, and concentration. Leaching is used to recover copper from slime, a byproduct of electrolytic refining. In this process, sulfuric acid is circulated through the slime in a pressure filter. Copper dissolves in the acid to form a ...

WebJul 4, 2024 · JFE Steel Uses Double-Slag Refining to Cut CO2 Emissions Japan’s second largest steel maker JFE Steel Corporation has announced that increased use of scrap … dr theiss vitamin dWebThe oxidation of carbon and silicon and optimization of dephosphorization during the refining process were studied through industrial practice and theoretical calculation. … dr theiss vitamin d3 k2WebJan 5, 2012 · Slag-remaining and double slag steelmaking technology in one converter (MURC) (Ogawa et al., 2001). 1. ... It used a premelted refining slag in the ladle on which liquid steel was poured from the furnace. The process thus utilized the kinetic energy of the tapping stream to mix the steel and slag to an emulsion in the ladle. ... Development of ... dr theiss vitamin b spray pznWebOct 9, 2024 · Picture 1, typical ladle furnace. 2) Vacuum treatment. a) VD and VOD process. Whenever a higher melt purity and a reduction of non-wanted steel elements are needed, a vacuum melt treatment is ... dr theiss vitamin c sprayWebApr 14, 2024 · The side-blown bath smelting process involves gas–slag–matte three-phase flow, ... : Wu X, Wang S, Hu J, Wang H, Xiao Q, Deng G and Li D (2024) Analysis on … dr. theiss vitamin d sprayWebFire refining and electrolytic refining are used to purify blister copper even further. In fire refining, blister copper is usually mixed with flux and charged into the furnace, which is maintained at 1100°C (2010°F). Air is blown through the molten mixture to oxidize the copper and any remaining impurities. The impurities are removed as slag. dr theiss vitamin c serumWebJan 1, 2016 · The “Slag-Remaining+Double-Slag” BOF steelmaking process has been developed and applied in Shougang Corporation, Ltd., by which consumption of lime and … dr theiss vitamin d3 spray