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The investigation of phosphorus chemical bond in the

2015.6.15  The chemical shift of Р2р-levels is driven by phosphorus chemical bond with cations being present in manganese ores and being in different valence state; formation of island, ring and chain orthophosphates and di-orthophosphates; transfer of electron density from the

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A Strategy for utilisation of low grade high phosphorus

2020.5.6  to decrease phosphorus content in manganese ores by hydro-metallurgical method. These studies show that the phosphorus content of some high phosphorus

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STUDY OF THE BEHAVIOR OF PHOSPHORUS IN THE

2023.8.17  Manganese ores in Russia are characterized by low manganese (18–25%) and high phosphorus contents (0.2–0.3%). Manganese mining in Russia is still in its nascent

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EXPERIMENTS ON THE DEPHOSPHORIZATLON OF

2022.10.12  The phosphorus results in steel from the metallic charges which can be between 45-98% recycled wastes of manganese steel. Another source to introduce the

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Study of the Behavior of Phosphorus in the Production of Manganese ...

2023.7.24  In this research, we investigate the possibility of phosphorus removal into the gas phase during production of manganese ferroalloys. This will make it possible to involve

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Removal of Phosphorus from High-Phosphorus Manganese

2019.11.13  Magnetic separation is a method to remove phosphorus and improve manganese grade of high-phosphorus manganese ore, and it relies on a differences in

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Dephosphorization of phosphorus-rich manganese ores by

1981.10.1  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

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Phosphorus removal from manganese ore by plasma treatment

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

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1 INTRODUCTION 1.1 Manganese Ore Production in

2021.3.26  Manganese is added in the form of its ore during ironmaking or as ferromanganese alloy at the steelmaking stage. There are four main types of ferromanganese

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Large-Scale Formation of Manganese, Phosphorus, and

2024.3.29  Manganese ore of the Datangpo Formation rapidly deposited after the termination of Sturtian glaciation. The metallogenic process was the result of the coupling

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Manganese Ore - an overview ScienceDirect Topics

Manganese ore is a mineral used in iron making to regulate the manganese content of the hot metal within the required range. ... of ores from different sources is common practice to reach the desired manganese-to-iron ratio and to control the level of deleterious elements, particularly phosphorous. The use of sinter as a source of manganese is ...

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1 INTRODUCTION 1.1 Manganese Ore Production in

2021.3.26  1.1 Manganese Ore Production in South Africa ... phosphorus levels in these steels are a prerequisite for improved physical properties. Sulphur in the steel should be less than 0.01% (0.006 - 0.01%) because the sulphide and oxide inclusions adversely affect the mechanical properties of steel products. On

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Assessing the environmental footprints of the manganese

2023.3.8  Increasing demand for manganese and rapid depletion of high-grade manganese ores grow attention to other resources. However, environmental impacts and techno-economic issues are the main challenges regarding manganese extraction from low-grade ores. This study investigated the environmental impacts of manganese recovery from low-grade ores and the

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A green method for Mn2+ and NH4+-N removal in electrolytic manganese ...

2021.9.1  High concentrations of manganese (Mn 2+) and ammonia nitrogen (NH 4 +-N) in electrolytic manganese residue leachate (EMRL) have seriously polluted the environment.In this study, electric field and phosphorus ore flotation tailings (POFTs) were used for Mn 2+ and NH 4 +-N removal in EMRL firstly.The effects of the liquid acid ratios, reaction temperature, current

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The Problem of Phosphorus in the Production of

2024.7.7  708 STEEL IN TRANSLATION Vol. 50 No. 10 2020 DASHEVSKII et al. A significant part of phosphorus contained in man-ganese ores is in the structure of ore grains; it is asso-

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The mobility of phosphorus, iron, and manganese through

2015.12.19  The management of external nutrient inputs to eutrophic systems can be confounded due to a persistent pool of phosphorus (P) in lake sediments. The behaviors of P and trace metals depend largely on the reductive dissolution of amorphous iron (Fe) and manganese (Mn) (oxy)hydroxides in sediments; however, a holistic understanding of these dynamics in

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Manganese Metallurgy - SpringerLink

2023.6.27  Manganese in natural manganese ores mostly exists in the form of oxides, carbonates, and silicates. Manganese minerals with industrial value mainly include pyrolusite (MnO 2), psilomelane (mMnOMnO 2 nH 2 O), manganite (Mn 2 O 3 H 2 O), braunite (Mn 2 O 3), and hausmannite (Mn 3 O 4), as well as rhodochrosite (MnCO 3) and rhodonite (MnOSiO

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Study of the Behavior of Phosphorus in the Production of Manganese ...

2023.7.24  Economic growth in developing countries, China in particular, has led to an increase in steel production and consumption in recent years. This trend is stimulating the demand for manganese ferroalloys. High-grade manganese ores from Australia, Africa, and South America are being supplied in larger quantifies to Asian ferroalloy plants, which used to

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Extraction and separation of manganese and iron from

2019.1.15  In order to obtain specification-level Mn-bearing concentrates with higher Mn/Fe mass ratio or manganese solutions with lower content of iron ion, many works have been conducted for selective extraction and separation of Mn and Fe from the Fe-Mn ores. ... and 49.6% of the manganese resources contain a high content of phosphorus (P/Mn > 0.005 ...

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The investigation of phosphorus chemical bond in the

2015.6.15  chemical bond in the manganese-ore minerals are of great importance. The member of the Academy of Sciences A.G. Betekhtin [1], in his earlier papers, gave suggestions that the ma-jor part of phosphorus in the manganese ores is bonded with manganese and this bond is distinguished by absorption nature. The investigations [2-4] established the ...

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The Problem of Phosphorus in the Production of Manganese Ferroalloys

2020.10.1  A process for dephosphorization of manganese-containing oxide melts with carbon monoxide was developed and studied for the first time. Thermodynamic analysis showed that, under equilibrium ...

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Manganese ore pre-reduction using a rotary kiln to

2019.2.28  Manganese ore pre-reduction using a rotary kiln to manufacture super-low-phosphorus ferromanganese D. Teguri, K. Saito, and Y. Miyauchi ... York ore is both low in phosphorus and high in Mn/Fe, just like the sintered manganese ore ("E" in figure 1) that we had been using. However, because York ore ...

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Reduction Mechanisms in Manganese Ore Reduction

2015.7.22  Manganese ores are highly heterogeneous and contain various minerals with different levels of contained manganese and iron and therefore the ore reduction behavior is not uniform. Both phase chemistry and phase morphology at the reaction interface, at micron scale, must be investigated to understand the reaction mechanism effects in manganese ore

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Development of a Smelting Reduction Process for Low

2020.8.3  Manganese alloys are important raw materials for steelmaking. However, selective mining of high-grade manganese ore resources has resulted in a scarcity of these high-grade Mn ores (Mn: >42; Mn/Fe: >5). The present research work is carried out to explore a new smelting reduction process to produce high-Mn/Fe synthetic Mn ore from low-grade

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A new metallogenic model for the giant manganese deposits

2022.10.1  The primary (level-I) Nanhua rift basin contains multiple tectonic units of various scales. For instance, the western segment of Nanhua rift basin contains ... Exploration models of ancient natural gas seep sedimentary-type manganese ore deposit: A case study of the Nanhuanian “Datangpo” type manganese ore in the conjunction area of Guizhou.

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Occurrences, Distribution, and Evaluation of Manganese

2021.8.16  The Mn deposits examined in this study are located in the Banswara district, which lies in the southernmost part of the Rajasthan state of India (Fig. 1) [].The district lies in between 23° 11′ N to 23° 56′ N latitude and 73° 58′ E to 74° 49′ E longitudes while the manganese belt in the district lies in between 23° 10′–23° 20′ N to 74° 15′–74° 25′ E (Fig. 2) [].

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Morphological Enrichment and Environmental Factors

2024.8.12  Bioavailable heavy metal and their efficient phytoremediation in mining areas have major implications for environmental and human health. In this study, we investigated 12 dominant plants in a typical Mn ore area of Zunyi, Guizhou Province, China, to determine the heavy metal contents, morphologies, and environmental factors affecting Mn, Cd, Pb, Cu, Zn,

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Ecotoxicological consequences of manganese mining

2023.1.1  Moreover, it has been studied that in urban and rural areas where the level of significant manganese pollution can rise to 0.01–0.07 μg/m3 and in areas near the Ferro- and silico- manganese industries the level can rise to >0.5 μg/m3 in 24 h [3].

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Determining the Conditions for Selective Iron Recovery by

2021.4.24  Abstract The results are presented for the thermodynamic simulation of reductive roasting of ferromanganese ore with a high phosphorus content in the presence of solid carbon. The simulation has been performed using a TERRA software package. An effect of the process temperature in the range of 950–1300 K at a carbon content amounting to 8.50–8.85

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Optimization of manganese-rich slag extraction from

2022.9.19  content in the manganese ore was 27.7 mass%, the iron content was 18.1 mass%, and the manganese–iron ratio was 1.53. According to the manganese grade, Mn/Fe ratio, and content of impurity elements, the manganese ore is low-manganese high-iron ore, and the silica content in the ore is high (5.54 mass%). As seen in Table 2, the particle size of

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