· low-temperature molten iron dephosphorization process for low-headroom hot metal ladle; adjustable throat valve is used to control the desulfurizing agent injection speed to achieve precise and continuous injection flow adjustment; dynamic pressure difference injection control technology is used to achieve stable injection operation; double spray …

 · Abstract: The lime-based slag system is generally applied to the treatment of pre-dephosphorization of molten iron, which mainly composed of CaO, FemOn, CaF2, etc. However, the CaF2 contained in the slag always results in the serious lining erosion and the environmental hazard caused by fluorine-containing dephosphorization by-product, which …

 · To extract the valuable elements from the steel slag, a novel approach has been proposed by modification treatment to provide the stronger driving forces and accelerate the reduction. Three types of dephosphorization steel slags were reduced using carbon-saturated iron bath to extract iron and phosphorus simultaneously. During the process of …

investigation of ductile iron dephosphorization in mali Dephosphorization and Desulfurization of Molten Ductile desulfurization and dephosphorization of the ductile iron without any …

 · Ductile iron with R m = 700 MPa we can get with metal No 4, which contain 0,058 % Mg rem or with metal No 5, which contain 0,052 % Mg rem. Data in Figure 1 show that the variant No 1 is an optimum chemical composition of metal for getting ductile iron with R m 450 MPa. The variant No 2 is suitable for getting ductile iron with R m. More

INVESTIGATION OF DUCTILE IRON PROPERTIES . Ductile iron with R m = 700 MPa we can get with metal No 4, which contain 0,058 % Mg rem or with metal No 5, which contain 0,052 % Mg rem. Data in Figure 1 show that the variant No 1 is an optimum chemical composition of metal for getting ductile iron with R m 450 MPa.

Ductile Iron is a type of cast iron known for its impact and fatigue resistance, elongation, and wear resistance due to the spherical (round) graphite structures in the metal. Ductile Iron is also called ductile cast iron, spheroidal graphite cast iron, or nodular cast iron. An Innovation In an Important Industry

 · Ductile iron possesses the processing advantages of grey iron, such as low melting point, good fluidity, castability and machinability, and engineering advantages of steel, including high strength, ductility and …

Dephosphorization Treatment of High Phosphorus . ley high phosphorus iron ore used in this investigation The chemical composition The dephosphorization treatment of the pre reduced iron ore by me chanical ductile material and the gangue phase was a …

To be published in the Gazette of India Extraordinary . Subject Sunset Review anti dumping investigation concerning imports of 'Ductile Iron Pipes' originating in or exported from …

 · The phosphorus content in the steel, produced through induction furnace route using DRI, is reported to be in the range of 0.06 to 0.1 %. According to BIS standard, the phosphorus content in any...

 · For every 0.01% increase in phosphorus content, the ductile-brittle transition temperature increases by 4 to 4.5°C. Therefore, the lower the content of phosphorus in ductile iron, the better, and should be less than 0.08% in general. For more important castings, the phosphorus content should be less than 0.05%. 5.

We investigated the effect of direct reduced iron (DRI) addition on dephosphorization of molten steel by electric arc furnace (EAF) slag at 1823 K (1550 °C). Various phenomena such as CO gas evolution and slagmaking by gangue oxides in DRI were experimentally observed at each reaction step.

dephosphorization technique for the top and bottom blowing converter by adopting a mathematical model of dephospho- rization combined with a FeO generation model. 1)In this technique, (FetO) generation is the most important control item for enhancing dephosphorization by generating a high- er dephosphorization capacity slag. The main …

 · 2. The phosphorus and sulfur can be eliminated simultaneously from the ductile iron melt by use of this process. 3. By keeping all other factors affecting constant the …

High quality Si53Ba12Ca12 Ductile Iron Inoculation Blocky Style Iron Dephosphorization Agent from China, China's leading ferro silicon zirconium product, with strict quality control barium silicon factories, producing high quality barium silicon products.

 · The optimum dephosphorization conditions were 37.79% FeO, 6.24% Na2CO3, 9.89% MnO, with basicity of 4.50 and reaction temperature of 1387℃, the dephosphorization rate was 97.30% with relative error of 2.70%.

The dephosphorization of high phosphorus iron ore has been researched in many countries, such as physical separation, 6,7,8,9,10) bio-leaching, 11,12) flotation, 13,14) hydrometallurgical process. 15,16) But the oolitic structure of the ore prevents the effective use of physical concentration and flotation separation, and necessitates the use ...

 · The dephosphorization treatment of the pre-reduced iron ore by mechanical crushing and screening methods was evaluated as a function of the initial reduction condition, screen size, and the mechanical property of the reduced iron ore phase. Full Text PDF [3230K] Copyright © 2011 by The Iron and Steel Institute of Japan

 · On the other hand, the dephosphorization is mainly completed from 5 to 10 min in the case of divided addition of iron oxide (Pattern B). The reason for this is the interfacial oxygen potential under the Pattern A is as high as about 1.64 × 10 −11 atm, which is about two times higher than that of the Pattern B.

Melted iron, Puddled iron, The total dephosphorization is 61 per cent., of which 46 per cent. is due to the action of fusing it on the bed of the furnace with oxide of iron. Only 15 per …

PDF Dephosphorization Treatment of High . The difference in the milling and dephosphorization The dephosphorization of high phosphorus iron ores by behavior …

 · Dephosphorization - an overview | ScienceDirect Topics. · From the viewpoint of technological process, there are three types of hot metal dephosphorization: Type I: Dephosphorization pretreatment and decarburization are completed in two converters, respectively, as shown in Fig. 6.59, for example, the SRP in the Wakayama …

73 Phase Investigation of Austempered Ductile Iron S 1K SWAIN, R 3K PANDA2, J 5P DHAL, S C MISHRA4 and S SEN 1,4,5Department of Metallurgical & Materials Engineering 2Department of Physics 3Department of Chemistry National Institute of Technology, Rourkela-769008, Odisha, India

 · The results revealed that Na 2 CO 3 had the most significant effect on iron recovery and dephosphorization, followed by CaCO 3, the effect of CaF 2 was negligible. …

 · Ductile iron with R m = 700 MPa we can get with metal No 4, which contain 0,058 % Mg rem or with metal No 5, which contain 0,052 % Mg rem. Data in Figure 1 …

 · The slag basicity of first deslagging should be controlled about 1.5, and (FeO) content should be controlled within 15%. In order to control the [P] of molten steel within 0.01mass%, the basicity should be higher than 3.4 and the temperature should be less than 1640°C. KEYWORDS: High silicon hot metal desiliconization dephosphorization

a process for dephosphorization, desulfurization and denitrification of chromium-containing pig iron comprising contacting the melt of said iron with a slag comprising not less than 10% and...

 ·  · From the viewpoint of technological process, there are three types of hot metal dephosphorization: Type I: Dephosphorization pretreatment and …