In general, the content of iron in nickel sulfide ore is high, and it is rich in precious metals and other refractory metals. Ionic liquid can achieve selective extraction of copper, cobalt, and nickel [68, 69]. The remaining slag mainly contains iron oxide and preliminarily enriched precious metals and refractory metals.
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A novel ambient condition production of superior strength, non-abrasive, non-sticky iron ore pellets devoid of undesirable fines under the compression stress of 4 kN is presented.
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iron ore resources and technical conditions, later develop-ment of thick-bed sintering technology in China results in a thickness of 200–300 mm for a long period compared with Europe and Japan. Since 21st century, thick-bed sintering Comprehensive Technologies for Iron Ore Sintering with a Bed Height of 1 000 mm to Improve Sinter Quality, Enhance
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Request PDF | Comprehensive evaluation of sintering basic characteristics of iron ore based on grey relational analysis | Sintering basic characteristics of fourteen iron ores were comprehensively ...
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Comprehensive Recovery of Valuable Metals from Lead-zinc Tailings by Flotation; Genetic diversity of bacteria in bioremediation system of iron mine tailing by Robinia pseudoacacia - Ryegrass - Trifolium repens; Experimental and Computational Assessment of the Strength Properties of Mont Wright Tailings Matrices for Use as …
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Abstract. This paper presents a comprehensive study on the production and reduction of high-quality iron ore pellets characterized by a basicity index nearing 0.5 …
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The concept of UHPC was put forward by Larrard et al., 1994 and has received continuous attention in the construction industry and also achieved exponential improvements in various properties such as a compressive strength > 120 MPa [ Dingqians [8], [7]] flexural strength more than 50 MPa [9], possessing a minimum tensile strength …
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This section reviews and describes the use of the techniques mentioned in "General Ore Characterization Tests and Their Principles" section for characterization of iron ore samples of various origins, resulting in valuable inferences. The primary characterization tool used in …
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The research on whether can iron ore tailing improve the compressive strength of alkali- activated slag ing concrete is conducted. The experiment shows that too little or too much powder from iron ore tailing will reduce the compression strength of alkali activated slag concrete, when powder from iron ore tailing achieving optimal …
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The effects of gas composition and the extent of reduction on the compressive strength of direct reduced iron (DRI) were investigated. Gas mixtures containing different proportions of hydrogen, carbon monoxide, water vapor, carbon dioxide and methane were tested. The structure of laboratory and industrial DRI was examined …
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Figure 7 presents the peak shear strength envelopes of dry iron ore tailing at 30% and 80% relative densities. ... Bai J, Li L (2010) Innovative methodology for comprehensive utilization of iron ore tailings. Part 1. The recovery of iron from iron ore tailings using magnetic separation after magnetizing roasting. J Hazard Mater …
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Accurate prediction of carbon efficiency is a prerequisite for achieving energy saving and consumption reduction in an iron ore sintering process, and is the key …
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DOI: 10.1016/J.APPLTHERMALENG.2017.11.148 Corpus ID: 92992707; Prediction of sinter yield and strength in iron ore sintering process by numerical simulation @article{Zhang2018PredictionOS, title={Prediction of sinter yield and strength in iron ore sintering process by numerical simulation}, author={Bin Zhang and Jiemin Zhou and …
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The effect of iron ore tailing substitution and deactivated ZSM-5 as auxiliary ing materials on the ing properties is investigated. In addition, the mineral …
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Tables 3 and 4 show the particle size distributions of the raw materials. It was shown that the iron ore fine had a relatively large size, with the size larger than 8 mm amounting to 16.97%. On the other hand, the dusts had much smaller sizes, as confirmed by their finenesses larger than 1200 cm 2 /g. Table 4 also shows the ballability indexes …
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Mineralogical characterization helps in identifying the mineral distribution in the ore sample and provides the textural information, in turn assisting in determining the …
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This paper presents a comprehensive study on the production and reduction of high-quality iron ore pellets characterized by a basicity index nearing 0.5 and diameters ranging from 1 to 2 cm.
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well as ore processing. Keywords Iron ore · Characterization · SEM–EDS · XRD · XRF · FTIR Introduction The most common element that makes up rock formations is iron, which accounts for about 5 percent of the earth's crust. India alone has a signicant reserve of iron ore in the world [1]. The two most common iron minerals, hema-
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Thick-bed sintering can take advantage of the self-storage effects of the materials layer to lower the consumption of solid fuels, reduce the emission of gaseous pollutants such as NOx, COx, SOx, etc., while increasing the output of the sintering process and improving the sinter strength.1–3) Since the 1950s, it has been the consensus for steel enterprises …
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Semantic Scholar extracted view of "A semi-supervised linear-nonlinear prediction system for tumbler strength of iron ore sintering process with imbalanced data in multiple working modes" by Xiaoxia Chen et al. ... To develop a smelting process for the comprehensive utilization of high-chromium vanadium−titanium magnetite (HCVTM), …
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After drying, green balls are preheated at 800°C for 10 min, pellets with compressive strength of 581 N/pellet are achieved, preheated pellets were directly reduced at 1050°C for 80 min, and directly reduced iron assaying 90.33% of total iron and 85.05% of metallic iron and 94.15% of metallization degree are achieved.
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The situations, characteristics, and status of iron ore tailing resources in China are presented. The approaches of comprehensive utilization of iron ore tailings have been analyzed. It has been proved that the comprehensive utilization of iron ore tailings is efficient, socially beneficial and improves environment situation. The scopes of …
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The iron ore pellets, as a raw material in the ironmaking process, whose microstructure can be divided into two parts: the mineral and the pores. Many research results indicate that the mineral constituents have …
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Learn about the world's iron ore production, trade, reserves, and challenges in this chapter from a book on iron ore mining and processing. Find out the key players, …
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Iron ore tailings have become one kind of the most hazardous solid waste. In order to recycle iron in the tailings, we present a technique using magnetizing roasting process followed by magnetic separation. After analysis of chemical composition and crystalline phase, according to experimental mechanism, the effects of different …
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In order to comprehensive utilization of iron ore tailings, this experimental research was to investigate the possibility of using the residues after iron recovery from iron ore tailings as raw materials for the preparation of cementitious material, abbreviated as TSC, including analyses of its mechanical properties, physical properties and …
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This study using natural ores combines in situ X-ray diffraction experiments in model sinter systems with laboratory-based compact sinter tests to examine the links …
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This practice not only helps in reuse of the waste material but also creates a cleaner and greener environment.This study aims to focus on strength aspects of Self-compacting concrete (SCC) which has been prepared by partially replacing cementitiousmaterial by red mud (RM) and in the same mix, partially replacing sand by Iron Ore Tailings(IOT).
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A laboratory study is carried out to characterize the effect of basicity (varying 1.5–3.5) on magnetite iron ore pellets containing TiO2 (content 5%). Green pellets are made by the laboratory scale balling disc and roasted at a horizontal tube furnace with 1220 °C. Thermogravimetric analysis ('TG') is used to analyze the thermal decomposition of …
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Iron ore tailings (IOT), as one of the main mining wastes, is produced after multiple crushing and magnetic separation on iron ore [15]. In China, stored IOT has reached 5 billion tons and is growing steadily at a rate of over 0.3 billion tons per year, whereas only 20 % of them has been reused [16] .
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Steel was the fundamental material for industrial development, and the steel industry's growth was linked to the separation of mining and sorting of vast iron ore resources [1, 2].Over the past few decades, China's iron and steel industry has rapidly developed, leading to an annual discharge of over 6 billion tons of iron tailings …
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In order to reveal the correlation between the fundamental sintering characteristics of iron ores and their real sintering behaviours, a comprehensive evaluation index is proposed based on the measurement of four high temperature indexes, ie assimilation temperature, liquid phase bonding strength, liquid fluidity and calcium ferrite formation percentage, …
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