1. Introduction. The iron and steel industry is a pillar of the national economy and represents its degree of development [1].However, the insufficiency of high-quality iron ore resources seriously threatens the safety of the iron and steel industry [2].China, the world's largest iron ore consumer and steel producer, manufactured 1.018 billion tons of …
TANG Jing-fang, FU Lin-tao, LI Fu-zhi. The Application of NID Desulfurization Process in 3rd Sintering Plant of WISCO [J]. Sintering and Pelletizing, 2009, 34(5): 13 (in Chinese). Google Scholar Cappel F. EOSR Flue Gas Circulation Optimizes Sintering—A New Craft to Strengthen the Environment Protection of Iron Ore …
[Show full abstract] size, froth velocity, froth colour and froth stability) in the column flotation was discussed during desulfurization of an iron ore using response surface methodology.Image ...
A straightforward alternative to iron ore desulfurization involves. acid leaching, where the reduction of sulfur content is directly. proportional to H. 2. SO. 4. concentration and reaction time ...
There are four stages where sulphur can be removed: in the blast furnace (BF), during hot metal (HM) pretreatment, in the converter …
Establishing a green biodesulfurization process for iron ore concentrates in stirred tank and leaching column bioreactors using Acidithiobacillus thiooxidans. Front Bioeng Biotechnol. ... We then compared the At. thiooxidans-mediated desulfurization process, with and without air supply, under potassium limitation, varying the initial …
Iron ore sintering is an important part of a long steelmaking process with sulfur dioxide emissions accounting for 40%–80% of the total sulfur dioxide emissions in steel companies [1,2,3,4].Semi-dry flue gas desulfurization technology combines the characteristics of wet and dry flue gas desulfurization processes, and it has significant …
Ultrasonic technology is being increasingly explored in minerals processing. In this paper, ultrasonic treatment was introduced as a novel method for microbial desulfurization of sulfide ores. A …
Various studies have been increasingly performed on the reduction of sulfur content of iron ores and concentrates. The presence of sulfur in these materials causes technical problems in steel and alloys and environmental issues in the sintering of iron ore process. The achievement of higher sulfur removal rates has been an important goal …
The reagents used in iron ore flotation, including starch, amines and fatty acids, and the mechanisms of their interactions with the minerals in iron ore are examined.
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 ores.
The Desulfurization of Magnetite Ore by Flotation with a Mixture of Xanthate and Dixanthogen Jun Yu, Yingyong Ge * and Xinwei Cai ... However, in the practice of iron ore flotation, the loss of valuable mineral in tailings is the major problem confronting the iron ore industry. Thus, the reagent suit is formulated
1. Introduction. During the coal combustion and utilization, the sulfur, such as pyrite and organic sulfur in coal is a key issue for the environmental protection (Restrepo et al., 2015).The sulfur in coal is removed or controlled by three major methods, i.e. removal of sulfur by coal preparation or cleaning techniques prior to utilization (Eliot, 1978), sulfur …
In this work, Mn ore was mixed with the wastewater anode solution of electrolytic Mn (ASEM, instead of water) and utilized as the desulfurizer for simultaneous SO 2 removal from flue gas and Mn extraction. The effects of Fe 2+ and Fe 3+ on Mn leaching and flue gas desulfurization were investigated. For MnO 2 and Mn 2 O 3 …
Based on our knowledge, desulfurization of iron ores using various physical and chemical processes and their potentials, Various studies have been increasingly performed on the …
1. Introduction. Iron has wide industrial applications in many aspects of the social economy, such as steel making. Iron ore is abundant in iron-containing minerals and mainly occurs in the form of rocks, magnetite (Fe 3 O 4), haematite (Fe 2 O 3), siderites (FeCO 3) and limonite (2Fe 2 O 3 ·nH 2 O) [1, 2].Zinc and lead are commonly found in …
The low-temperature wet oxidation behavior of semi-dry desulfurization ash from iron ore sintering flue gas in ammonium citrate solution was investigated for efficiently utilizing the low-quality ...
Realization of low temperature and high efficiency oxidation of CaSO 3 is the key to solve the issue of ecological hazards caused by semi-dry sintering flue gas desulfurization ash. The subcritical hydrothermal technology was employed for the oxidation of CaSO 3, achieving 89.83% of CaSO 3 at 180 °C, 2 MPa for 120 min with a …
Direct application of high-sulfur fuels and ores can cause environmental pollution (such as air pollution and acid rain) and, in serious cases, endanger human health and contribute to property damage. In the background of preserving the environment, microbial desulfurization technologies for high-sulfur fuels and ores are rapidly …
A typical of the high sulfur iron ore from Inner Mongolia, China, iron grade of 53.06% and sulfur content is 2.76%, the main metal mineral in the ore is magnetite, followed by magnetic pyrite ...
The low-temperature wet oxidation behavior of semi-dry desulfurization ash from iron ore sintering flue gas in ammonium citrate solution was investigated for efficiently utilizing the low-quality desulfurization ash. The effects of the ammonium citrate concentration, oxidation temperature, solid/liquid ratio, and oxidation time on the wet …
In this work, the feasibility study of desulfurization process for iron ore used in the pelletizing plant was carried out in the fourth line of the Gol-e-Gohar Complex. Two methods were examined ...
Calcium-based desulfurization ash (CDA) is mainly produced in dry and semi-dry flue gas desulfurization processes. The property of CDA is extremely unstable because its main component, calcium sulfite, makes it difficult to be directly applied to the field of building materials. ... The filling material is made of iron ore overflow tailings as ...
Iron ore desulfurization is the process of removing sulfur from iron ore that contains sulfur compounds. Sulfur is a common impurity in iron ore, and the presence of sulfur compounds can adversely affect the ironmaking process and product quality. Therefore, desulfurization is an essential link in the iron ore pretreatment process.
Iron ore sintering is the main SO 2 emission process in iron and steel industry. The flue gas of iron ore sintering has been cleaned by desulfurization equipment, which causes high capital and operation cost. A novel technology of reducing SO 2 emission of flue gas during iron ore sintering process by adding urea into granules …
The low-temperature wet oxidation behavior of semi-dry desulfurization ash from iron ore sintering flue gas in ammonium citrate solution was investigated for …
In 2021, globally roughly two third of the steel is produced via the BF-BOF steelmaking process, where iron ore is reduced by carbon (coal and coke) in the blast furnace (BF), …
One option involves roasting the sulfur content in iron ore using an oxidant, usually oxygen, and heat in a thermal decomposition process. In this operation, sulfur …
Desulfurization using thermal decomposition is a side process in iron ore sintering where the iron ore concentrate turns to roasted pelletized iron ore and this has been considered by many researchers.[55–59] All the reactions associated with pellet desulfurization may be divided into four steps: the dissociation of sulfides; their oxidation ...
Research Article. Optimal hot metal desulphurisation slag considering iron loss and sulphur removal capacity part I: fundamentals. Frank N. H. Schrama., …
پست الکترونیک: [email protected]
نشانی: شماره 1688، جاده شرقی گاوک، منطقه جدید پودونگ، شانگهای، چین.
کپی رایت © 2024.cryptod تمامی حقوق محفوظ است.نقشه سایت