dephosphorization of high phosphorus manganese ores 100

  • The Manganese Ore Resources in China and their Prospecting

    The Manganese Ore Resources in China and their Prospecting Chen Renyi, Bai Qin The manganese ores in China contain high levels of phosphorus and iron. Among all ore mines prospected, ore mines with phosphorus exceeding standard account for 49.6%, those with iron exceeding standard account for 73%, and those reach the high-grade

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  • Selective recovery of phosphorus from acid leach liquor of

    There is huge amount of high phosphorus iron ore resources in many iron ore production areas, such as West Australia, Brazil, South Africa and Central South of China.1–5 According to the statistical survey, the reserves of high phosphorus iron ore reach 7.45 billion tons in China, and among them more than 4

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  • Dephosphorization of high

    morphosed ores of southern Orissa and Andhra Pradesh, however, phosphorus occurs in a more complex state and dephosphorization of these ores requires more drastic chemi-cal treatment, such as roasting with caustic soda6or sodium carbonate7at 800 C followed by leaching in water to remove soluble sodium phosphate.

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  • Dephosphorization of high

    morphosed ores of southern Orissa and Andhra Pradesh, however, phosphorus occurs in a more complex state and dephosphorization of these ores requires more drastic chemi-cal treatment, such as roasting with caustic soda6or sodium carbonate7at 800 C followed by leaching in water to remove soluble sodium phosphate.

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  • Dephosphorization of phosphorus

    Dephosphorization of phosphorus-rich manganese ores by selective leaching with dilute hydrochloric acid. Int. J. Miner. Process., 8: 359--375. Leaching of three high-phosphorus manganese ore samples from central India with dilute hydrochloric acid (0.1--0.6 M) has been found to reduce their phosphorus contents below the specified limit of 0.12%.

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  • SELECTIVE REMOVAL OF PHOSPHORUS FROM HIGH

    is the weight pct of phosphorus as phosphate in slag, (p O 2) is the partial pressure of oxygen. From the equation (2) it is obvious that to promote dephosphorization the favorable conditions are: i) a high activity coefficient of phosphorus (f [P]) and a high oxygen partial pressure ( ), ii) a high

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  • Dephosphorization reaction

    Steel, the higher the carbon and phosphorus caused by the brittleness of the more serious. Ordinary steel, the provisions of the phosphorus content of not more than 0.045%, high quality steel requires less phosphorus. Phosphorus, mainly in the pig iron from iron ore in the phosphate.

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  • Mechanism of phosphorus removal in beneficiation of high

    iron ore, and the phosphorus content was reduced from 0.126% in the raw ore to 0.042% in the concentrate. KANUNGO and MISHRA [16] employed the process of roasting with sodium chloride followed by leaching in dilute nitric acid to dephosphorize high-phosphorous manganese ores from Southern Orissa and Andhra Pradesh India.

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  • Dephosphorization of high carbon ferromanganese using

    The phosphorus level was reduced to 0.18 % from an initial level of 0.56 % when the reaction was carried out at 13000C using 16 Wt % BaCO3-BaF2 fluxes. The manganese loss was restricted in the range of 2-5%. However, it was found that the degree of dephosphorization decreased significantly with increase in the initial silicon content of the alloy.

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  • DEVELOPMENT OF A PROCESS FOR DEPHOSPHORISATION OF HIGH

    CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The bulk of high carbon ferromanganese produced in India continue to have more than 0.35 % phosphorus since they are produced by carbothermic reduction process. The low phosphorus manganese ores are deplet-ing fast and ferromanganese manufacturers will have no option but to use medium and low grade ores having high

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  • Dephosphorization of high phosphorus oolitic hematite by

    Kanungo and Mishra (2000) investigated the dephosphorization of high phosphorus manganese ores in India. In these high phosphorus manganese ores, the phosphorus can be reduced to 0.15% or less by roasting the ores with 2–6 wt% NaCl at 750–800 C followed by leaching in 0.5–0.75 M HNO 3 at 40–60 C for a period of 15–20 min. Nwoye (2009) established a valid and precise model to evaluate

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  • Dephosphorization Treatment of High Phosphorus Iron Ore by

    The difference in the milling and dephosphorization The dephosphorization of high phosphorus iron ores by behavior observed from the two size-reduction methods pre-reduction, air jet milling and screening methods was applied in the present work can be

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  • Processes for phosphorus removal from iron ore

    They evaluated the reduction of the phosphorus content of a Brazilian iron ore with an initial phosphorus content of 0.82%. The best result was obtained with dodecyl amine (approximately of

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  • Experimental Study on Desilication of the High

    The dephosphorization rate and iron yield of high-phosphorus oolitic hematite exceeding 87.8% and 91.8% by the way of carbothermal reduction in the microwave field and a further fine-grinding and magnetic separation.

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  • Production of (Mn,Fe)

    Abstract. The dephosphorization process for high P iron ores have recently been studied employing several methods. However, the researches of phosphorus removal about the high P manganese ores have seldom done as many as which of the high P iron ores.

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  • This ore was mixed with a Hudson ore of lower phosphorus and higher manganese content. These two ores provided the proper any regularity. The Germans were the only customers and at times of high - demand purchased it for use abroad. The company ceased functioning because

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  • THE EFFECTIVENESS OF DEPHOSPHORIZATION WITH

    Effective dephosphorization in the steelmaking processes (including EAF process) requires optimal content of iron oxides in the slag (ideally 20 - 35 wt%) [3, 4]. It also requires lower temperatures and higer values of slag basicity [2, 3].

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  • Ore in a sentence (esp. good sentence like quote, proverb)

    177+9 sentence examples: 1. The FCMC cyclo-microfroth flotation column is a kind of new effective separation equipment for fine particle ore. 2. In this paper, the importance of dephosphorization process in treatment of high phosphorus ore is analyze

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  • Dephosphorization of high

    However, due to the higher phosphorus contents of the manganese ores from Nishikhal mines in southern Orissa, and because of their apparent resistance to dephosphorization by roasting with Na 2 CO 3 alone, a mixture of Na 2 CO 3 and NaCl was found to be necessary to reduce the phosphorus content to below 0.15%.

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  • technology process of removal of phosphorus from iron ore

    iron ore using bacteria, giving a yield of above 80% within 30-45 days In countries having high phosphorus-iron ore, the highlighted dephosphorization process is capable of providing a reliable technical support; giving good dephosphorization at low cost Phosphorus removal using some biological processes have. Get Info

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  • A Strategy for utilisation of low grade high phosphorus

    Subramanian, M and Seetharamayya, O and Harman, C N (1983) A Strategy for utilisation of low grade high phosphorus manganese ores in the production of high carbon ferro manganese. In: Proceedings of the Seminar on Problems and Prospects of Ferro-Alloy

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  • EXPERIMENTS ON THE DEPHOSPHORIZATLON OF HIGHLY ALLIED

    The practical application of dephosphorization is discussed in the paper. Using the method of austenitic manganese steel waste re-melting, we get inevitable, phosphorus contents that exceed the admissible limits. The phosphorus increases the hardness

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  • Dephosphorization of high carbon ferromanganese using

    The phosphorus level was reduced to 0.18 % from an initial level of 0.56 % when the reaction was carried out at 13000C using 16 Wt % BaCO3-BaF2 fluxes. The manganese loss was restricted in the range of 2-5%. However, it was found that the degree of dephosphorization decreased significantly with increase in the initial silicon content of the alloy.

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  • Reaction Behavior of Phosphorus in Coal

    The acid leaching or bio-leaching is used for the dephosphorization of high phosphorus-containing iron ore. It was reported that acid leaching of high phosphorus-containing iron ores could dramatically reduce the phosphorus content in concentrates [13–16]. For example, the hydrochloric acid leaching of an iron ore containing 1.16% phosphorus removed 98% phosphorus at a particle size of passing 0.147

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  • Parameters Affecting the Production of High Carbon

    Blends of local manganese ores and imported manganese sinter are used at SMC for producing the high carbon ferromanganese. The local manganese ores are law and medium grades with Mn/Fe ratio ranges between 3 and 5.5. Manganese to iron ratio is very important in

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  • Steel

    Refining—that is, removal of carbon, manganese, and silicon from the metal—was achieved by a reaction between the slag (to which iron ore was added) and the liquid metal in the hearth of the furnace. Initially, charges of 10 tons were made, but furnace capacity gradually increased to 100 tons and eventually to 300 tons.

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  • ENV. SCI CHPT. 15 Flashcards

    6) The difference between a high-grade ore and a low-grade ore is the: a) amount of a particular mineral within the ore. b) relative abundance of the ore worldwide. c) relative ease with which the ore can be mined. d) type of minerals present within the ore. e) distribution of the ore worldwide.

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  • Reducing Dephosphorization of SiMn Alloy Melt and

    High manganese steels are of interest due to their good mechanical properties including superior strength and good ductility [1]. Accordingly, the demand for ultra-low phosphorus manganese alloys such as FeMn and SiMn alloys has recently increased. However, the conventional oxidizing dephosphorization (de-P) technique is not applicable to manganese

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  • phosphorus percent in spong iron ore

    Different Types of Iron Ore - Mineral Processing Metallurgy. A Bessemer ore carrying 52% of iron must not have more than .052% of phosphorus and the sulphur should not exceed .04%. But since the presence of phosphorus in pig iron increases the fluidity and tends to make sound castings, ores high in phosphorus are used in making foundry pig iron.

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  • US3402041A

    United States Patent ice 3,402,041 PROCESS FOR REMOVING PHOSPHORUS FROM IRON ORES Ignatz L. Feld, Tuscaloosa, Ala., and Thomas W. Franklin and William M. Larnpkin, New Orleans, La., assignors to the United States of America as represented by the Secretary of the Interior No Drawing.

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