The Source of hydrogen The main ways for hydrogen to enter the liquid steel are: through the rust on the scrap steel surface (xFeO?yFe3O4?2H2O); Hydrogen in ferroalloy; Water in carburizer, deoxidizer, mulch, insulation, slagging agent (Ca(OH)2), bitumen and tar; Ladle, tundish and injection pipe undried; Spray coating of ingot mould;…
Ladle furnace is mostly used in the refining of bearing steel, alloy structural steel, tool steel, spring steel, carbon steel and other steel types. Electric arc furnace, LF and CCM combine into a high efficiency short process production line with remarkable refining effect. The LF can refine the liquid with…
SME team overcome the impact of COVID-19 and are working hard to ensure the project progress smoothly. All projects are going ahead normally by the schedule. The rolling mills and facilities are to be shipped to Ethiopia.
For the electric furnace steelmaking, ingredients is related to whether the melting can smoothly operate andcost of the production. The reasonable ingredients can shorten melting time. Firstly it should carefully calculate correctly and accurate weighing the charge, next the size of the furnace charge should be fit proportionally. Thirdly various ingredients…
In principle, investors of EAF-steelmaking project should check carefully whether there are enough prerequisite conditions, then make a thoughtful plan of the project. Following five crucial factors should be primarily reviewed: 1.Product positioning Product positioning mainly includes product kinds, specifications and product quantity. It is difficult for a steel plant…
Steelmaking production is progressing towards more clean and more high efficiency along with many technologies put into practical application. Scrap crushing and sorting technology Scrap is mixed with ferrous metals, non-ferrous metals, non-metals, and should be crushed and sorted before charging into the furnace. Apart from separation, the paint and coating…
Scrap is the main material for EAF steelmaking. Scrap quality has a direct impact on steel quality, cost and furnace productivity. Therefore scrap should meet following requirements before charged. The surface of scrap steel should be clean and less rust, sand and other sundries in scrap will reduce the conductivity…
Generally, in the steelmaking process classification of the EAF is based on specific working features. such as nature of power supply, furnace lining type, charging mode, output power of furnace transformer and tapping mode of molten steel. Common the EAF can be classified by its below features. Power supply nature:…
Scrap steel is the primary raw material for arc furnace smelting. However, social (recycled) scrap often contains high levels of harmful elements such as Cu, Sn, As, and Pb, which are difficult to remove. The partial substitution of scrap steel with alternative materials—such as hot metal (pig iron), direct reduced…
Dans le processus de fusion pratique, les deux types de fours ont leurs avantages et leurs inconvénients respectifs. Efficacité thermique Le four à induction (IF) présente un rendement thermique supérieur et permet de chauffer rapidement les matériaux de charge. En revanche, le four à arc électrique (EAF) perd une quantité…
