As good quality ores of low phosphorus are depleted, the phosphorus content in manganese ores increases, and thus, the development of a new dephosphorization technology is needed. For this purpose, the removal of phosphorus compounds by vaporization directly from manganese ores using a plasma system was investigated in …
The metallic iron content of the pig iron is the most important parameter to determine the usefulness of the same. Pig iron contains around 90-92% metallic Fe. The proper determination of the ...
There are abundant manganese mineral resources in Chengkou and Xiushang County, Chongqing City, as well as a phosphorus content that is over the national standard; thus, the mass percent of phosphorous in Si-Mn alloys produced from manganese ores is over 1%. This can easily result in "cold brittleness" and reduce the steel quality when the …
optimum conditions for dephosphorization. Key words: Manganese ores, Phosphorous removal, Roasting Introduction It was demonstrated in previous work by the authors that, …
The achieved degree of dephosphorization of the accompanying manganese alloy is about 70%, the manganese content in the alloy - 64.6%. The …
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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.
High-phosphorus iron ore is not used because of its high phosphorus content. Phosphorus is mainly present in fluorapatite. In this work, the phosphorus vaporization that occurs during the carbothermal reduction of fluorapatite was investigated. The thermodynamic principle of vaporization, which removes phosphorus during …
Kanungo and Mishra (2000) investigated the dephosphorization of high phosphorus manganese ores in India. In these high phosphorus manganese ores, …
Study on Slag Forming Route of Dephosphorization in Combined Blown Converter Metals . 10.3390/met11081160
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In the present study, the dephosphorization of Fe-Ni-Si melt by CaO-saturated CaO-CaF2 slag was investigated, from which it was found that the dephosphorization efficiency increases as increasing the… Expand 2 Phosphorus removal from manganese ore by plasma treatment Su-Hyun Hwang Materials Science 2011
Abstract Because conventional (physical) methods of ore dressing are not suitable for reducing the phosphorus contents of high-phosphorous manganese ores from Andhra Pradesh (AP) and the adjoining area in southern Orissa, India, the adoption of chemical methods becomes imperative.
Acid leaching is a method to remove phosphorus and improve manganese grade of high-phosphorus manganese ore, and it …
The melting temperature and viscosity of magnesium reduction slag were calculated by using Factsage thermodynamic software. The composition range of the magnesium-slag-based dephosphorizing agent was analyzed by drawing a multiphase diagram of the slag system. The Box–Behnken high-temperature …
Dephosphorization of phosphorus-rich manganese ores by selective leaching with dilute hydrochloric acid. Int. J. Miner. Process., 8: 359--375. Leaching of three …
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%.Various process parameters, such as concentration of acid, liquid/solid ratio, temperature and period of leaching, particle size …
The mass fraction of manganese and phosphorus is 17.83%, and 0.4%, respectively, P/Mn = 0.224, the result reveals the material is a typical high‐phosphorus manganese ore. The phase...
Extremely rich manganese ores are deposited in Chengkou and Xiushan, two counties of Chongqing city in China. However, those ores are low-quality due to high phosphorus in them, resulting in that Mn-based alloys, produced by them, generally contain high phosphorus around 1 wt.%.
Among the reserves of refractory iron ores, high‑phosphorus oolitic iron ore (HPOIO) have reached 20 billion tons; however, the oolitic structure and complex bonding between iron and phosphorus in HPOIO hinder its utilization [ [3], [4], [5] ]. Many processes have been designed to enrich HPOIO.
High-phosphorus manganese ores provide an important source of manganese, which is regarded as an irreplaceable material in the steel industry. The ammonia-ammonium carbonate leaching method was …
High-phosphorus iron ore resource is considered a refractory iron ore because of its high-phosphorus content and complex ore phase structure. Therefore, the development of innovative technology to realize the efficient utilization of high-phosphorus iron ore resources is of theoretical and practical significance. Thus, a method for …
Dephosphorization of steel is critical due to the rising prices ( rise in past five years) of iron ore, which has resulted in the use of lower grade iron ores [ 1 ]. Increased phosphorus (P) content in steel imparts cold shortness and leads to poor ductility, toughness, formability, and embrittlement [ 2, 3 ].
Abstract. Because conventional (physical) methods of ore dressing are not suitable for reducing the phosphorus contents of high-phosphorous …
A method for dephosphorizing iron oxide-bearing material containing phosphorus comprising (a) mixing with the material an additive selected from the group consisting of alkaline earth metal...
Hils et al. [ 7] proposed a dephosphorization method in the early stages of an integrated process of silicomanganese alloy production. The authors suggested a process of carbon reduction and consequent separation of phosphorus into the metal phase from a mixture of manganese ore and iron ore.
The composition of iron concentrate obtained: 64.12% Fe and 0.07% phosphorus with an iron recovery of 96.83%, and a rate of dephosphorization of 74.08%. Figure 2 shows a flowsheet for concentration by reductive sintering and removal of phosphorus. Figure 2 Reductive sintering for phosphorus removing. 2.2.3.4 Mixed processes
The phosphomolybdate blue spectrophotometric determination of phosphorus in ferromanganese was studied. Guimeng alloys, an electric high - carbon, ferromanganese, low ferromanganese smelting sales. The utilization of water quenched slag ferromanganese blast furnace is discussed.
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%.
PMID: 25822597. DOI: 10.1007/s12010-015-1592-4. Abstract. High-phosphorus iron ore is traditionally dephosphorized by chemical process with inorganic acids. However, this …
The contents of impurities, especially that of phosphorus, in manganese metal or in ferromanganese used in steelmaking are an important factor that affects product quality. More than 80% of phosphorus in the manganese products is introduced from manganese ore, the rest coming from coke and lime. Once it is absorbed into a molten manganese ore
Figure 12.3.1: Three Common Ores. (left) Iron ore, (middle) Manganese ore – psilomelane, and (right) Lead ore – galena and anglesite. Alloys An alloy is a mixture composed of two or more elements, at least one of which is a metal. You are probably familiar with some alloys of copper (such as brass and bronze) and iron (steel) .
S.B. Kanungo and B.R. Sant, Dephosphorization of phosphorus-rich manganese ores by selective leaching with dilute hydrochloric acid, Int. J. Miner. …
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 the concentration of dissolved …
Strict monitoring and prediction of endpoints in a Basic Oxygen Furnace (BOF) are essential for end-product quality and overall process efficiency. Existing control models are mostly developed based on thermodynamic principles or by deploying advanced sensors. This article aims to propose a novel hybrid algorithm for endpoint temperature, carbon, and …
Because conventional (physical) methods of ore dressing are not suitable for reducing the phosphorus contents of high-phosphorous manganese ores from Andhra …