A series of chemical-looping combustion (CLC) tests were conducted in a thermogravimetric analysis (TGA) reactor to investigate the potential of a Chinese sulfur-containing lean …

 — Identification of iron ore brand is one of the most important precautions against fraud in the international iron ore trade. However, the identification of iron ore brand can be sophisticated, due to fact that the role played by multi-component in iron ore brand identification was unclear. This study aims to establish an objective approach to identify …

 — In the steelmaking industry, iron concentrate with a sulfur content of less than 0.3% is in need. Due to the world's increasing demand for high-grade iron ore, mineral resources are nearly exhausted. Therefore, iron ores with a sulfur content higher than 0.3% have to be applied in industrial production [3], [4].

Removal of Sulfur From Iron Ore with Physical and Chemical Methods Buğra ÇAVUŞOĞLU 1 Hüseyin KARACA*1 1Department of Chemical Engineering, Inonu University, ... The analysis of the raw iron ore (wt.%) Fe FeO Al2O3 SiO 2 Na 2O K2O P S Cu SSOx Spyritic 63,02 20,31 0,11 5,37 0,07 0,09 0,02 5,505 0,01 0,048 5,457 RESULTS AND …

This document specifies a barium sulfate gravimetric method for the determination of the sulfur content of iron ores. This method is applicable to a concentration range of a mass fraction of sulfur from 0,01 % to 3,9 % in natural iron ores, iron ore concentrates and agglomerates including sinter products. 2 Normative references

 — Experiments on chemical-looping combustion of a sulfur-containing gaseous fuel with iron ore as the oxygen carrier were performed by thermogravimetric analysis …

 — Significance and Use 4.1 These test methods for the chemical analysis of metals and alloys are primarily intended to test such materials for compliance with compositional specifications. It is assumed that all who use these test methods will be trained an ... Sulfur, Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt Alloys by …

 — This work investigates the usage of graded iron ore tailing sands (GIOT) as aggregates in cemented mortar to reduce the pollution of iron ore tailings (IOT) and shortage of river sands. Fresh and hardened properties of graded tailings cemented mortar (GTCM) with partial replacement of standard sands (SS) by GIOT were investigated, by …

A series of chemical-looping combustion (CLC) tests were conducted in a thermogravimetric analysis (TGA) reactor to investigate the potential of a Chinese sulfur-containing lean iron ore as the oxygen carrier. Two main products of solid-fuel pyrolysis and gasification, namely, CH4 and CO, were selected as the reducing gases. Consecutive …

 — The sulfur element in the ore mainly enters the solution as S 2− form under high-pressure and high-alkali dissolution conditions, which accounts for more than 90% …

This document specifies a combustion/titration method for the determination of the sulfur content of iron ores. This method is applicable to sulfur contents between 0,002 % …

Lecture 16 Material balance in roasting: Contents of

 — The inclusion of small amounts of silicon, phosphorus and sulphur in iron ores or concentrates can have a profound effect on the steel making process and thus on the final iron and steel products.

In this study, Both of as-mined and concentrate of the iron ore were extensively characterized by polarizing microscopy, chemical analysis, and X-ray diffraction in order to figure out the process mineralogy of Iranian high sulfur iron ore and to find a suitable upgrading procedure for this type of iron ore. 2. Experimental 2.1.

 — Prediction of Sulfur Removal from Iron Concentrate Using Column Flotation Froth Features: Comparison of k-Means Clustering, Regression, Backpropagation Neural Network, and Convolutional Neural …

 — ABSTRACT: A series of chemical-looping combustion (CLC) tests were conducted in a thermogravimetric analysis (TGA) reactor to investigate the potential of a …

 — In this research, an effort is made to separately introduce the various processes, industrial practices, and fundamental research activities to remove sulfur from iron ores, concentrates, or roasted iron …

Dioxins generated by iron and steel industry account for the majority of industrial dioxins emissions. This study compares the performance of different additives (including calcium sulphate dehydrate CaSO4·2H2O; calcium polysulphide CaSx; ammonium sulphate (NH4)2SO4; 4-methylthiosemicarbazide H3C-SC(NH)2NH2 and thiourea H2NCSNH2) …

 — High-sulfur iron ore was grinded and sieved through 50 mesh screen (300 μm opening). Iron and sulfur contents of dried powder were determined by chemical methods, because XRF analysis is not accurate for sulfur containing ores. ... This quantitative analysis indicates that the ore is relatively low grade and has a high amount …

 — Description and properties of common iron ore minerals. Iron ore minerals are rocks or minerals that contain iron in concentrations high enough to be economically extracted. Common iron ore minerals include: Hematite (Fe2O3): Hematite is the most abundant and important iron ore mineral. It is typically steel-gray to black in color and …

 — Sulphur removal in steelmaking becomes less efficient when it is done further down the process chain. It is therefore important, from a process and economical point of view, to remove most of the sulphur …

 — The straw-type biomass, as a green and alternative reductant for the suspension magnetization roasting (SMR) of iron ores, is proposed. The roasted products are investigated at a roasting temperature of 750 …

The neutralization of strongly alkaline pH conditions and acceleration of mineral weathering in alkaline Fe ore tailings have been identified as key prerequisites for eco-engineering tailings-soil formation for sustainable mine site rehabilitation. Acidithiobacillus ferrooxidans has great potential in neutralizing alkaline pH and accelerating primary mineral …

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 — Iron ore contains typically 0.01% sulphur and is only a minor source of sulphur in the steelmaking process Citation 2, Citation 8. In the BF-BOF process there are four process steps where sulphur can be removed: ... A. Ziebik and K. Lampert, M. Szega: 'Energy analysis of a blast-furnace system operating with the Corex process and CO2 …

 — Sulfur, the 10 th most abundant element in the universe and the 14 th most abundant element in the Earth's crust, is the defining element of sulfide minerals and provides insights into the origins of these minerals through its stable isotopes. The insights come from variations in the isotopic composition of sulfide minerals and related …

 — Characterization of Agbaja iron ore was carried out using optical microscopy, scanning electron microscopy with energy-dispersive X-ray spectroscopy, X‐ray fluorescence spectrometry, powder X-ray diffraction, thermal gravimetry, and differential scanning calorimetry. The ore consists of a matrix of gangue minerals composed …

 — investigated iron ore OC. 2. EXPERIMENTAL SECTION 2.1. Materials. The OC selected is a natural iron ore from Harbin, Heilongjiang Province, China. Prior to the experiments, the iron ore was crushed and sieved to a broad size range of 0.25−0.65 mm and then calcined at 970 °C for 2 h under an oxidizing atmosphere. The calcination …

The chemical analysis of ore/processed products speaks of their suitability for various mineral based industries. ... SULPHUR ANALYSER 184 5. METHODS OF ANALYSIS USING INDUCTIVELY COUPLED PLASMA (ICP) INSTRUMENT ... variety of crucibles made of platinum, gold, nickel, iron, zirconium, palladium, silica, porcelain etc. There are …

The high-sulfur iron ore tailing (SIOT) is typically regarded as abundant mining waste due to its heavy metal and dust pollution. ... The Scanning-Electron-Micro scope (SEM) and Energy Dispersive X-ray Analysis (EDX) tests were conducted. The sample was mounted on conductive adhesive and coated with gold for 45 seconds at 10 mA using a Quorum ...