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desulfurization of iron equipment

Full article: Optimal hot metal desulphurisation slag

The definition of iron losses during the HMD process is the amount of Fe that is (unwantedly) removed during the HMD process (mostly during the skimming). Iron losses can mount up to 0.5–2.5% of the total hot metal weight.The achievement of higher sulfur removal rates has been an important goal since the development of sulfur removal techniques. In this research, an effort is Desulfurization of Iron Ores: Processes and Challenges

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Sulphur removal in ironmaking and oxygen steelmaking

There are four stages where sulphur can be removed: in the blast furnace (BF), during hot metal (HM) pretreatment, in the converter and during the Request PDF Desulfurization of Iron Ores: Processes and Challenges Various studies have been increasingly performed on the reduction of sulfur content of Desulfurization of Iron Ores: Processes and Challenges

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Desulfurization characteristics and mechanism of iron oxide

To date, many desulfurization methods have been developed, among which the dry desulfurization technology shows good application prospects [4]. One In this work, to study the desulfurization performance of non-aqueous chelating iron system, DES was applied as the solvent of iron/alcohol amine system, Study on the desulfurization performance of iron

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Full article: Optimal hot metal desulphurisation slag

The optimal hot metal desulphurisation (HMD) slag is defined as a slag with a sufficient sulphur removal capacity and a low apparent viscosity ( ηslag) which leads to low iron In this work, the desulfurization process of high-sulfur anthracite coal is discussed, and the desulfurization method of “reduced iron powder + heat treatment Desulfurization mechanism of high-sulfur coal by heating reduced

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Desulfurization of Iron Ores: Processes and Challenges

The achievement of higher sulfur removal rates has been an important goal since the development of sulfur removal techniques. In this research, an effort is made to Desulphurisation of Iron JOHN PARRY Nature 48,427–428 ( 1893) Cite this article 578 Accesses Metrics Abstract THE elimination of sulphur from iron and the chemical Desulphurisation of Iron Nature

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Technologies for biogas desulfurization An overview of recent

For the iron-oxide scrubber, there was no significant difference in the H2S concentrations in the pre-scrubbed (450 ± 42 ppm) and post-scrubbed (430 ± 41 ppm) biogas due to the use of scrap iron2. Amine method. The active amine desulfurization system is mainly used to remove H2S gas from natural gas to avoid corrosion of equipment in the subsequent process. Acid gas enters the amine absorber and reacts with H2S Removal Equipment Field Gas Treatment

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(PDF) Demetallization and desulfurization of heavy oil

nickel and iron removal varies over a wide range — for nickel from 57.2 to 71.6%, for iron — from 35.2 to 69.1%. The maximum degree of extraction of metals is observed at a temperature of 340Similarly, promotion activated carbon with iron enhances its desulfurization ability for the gases [23]. Thus, this work investigated the combination of the ODS and adsorption processes for the desulfurization process of the heavy naphtha fraction with a high sulfur concentration (600 ppm) using iron-promoted activated carbon Desulfurization of heavy naphtha by oxidation ScienceDirect

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Desulfurization of Pig Iron and Steel, Metallurgist DeepDyve

Metallurgist, Vol. 44, Nos. 11–12, 2000 NEWS OF THE RUSSIAN ACADEMY OF NATURAL SCIENCES P. I. Yugov, A. Romberg, and D. Yang The companies Ahlmamet (Germany) and Remacor (U.S.), with the participation of the Russian Academy of Natural Sciences, organized and convened the IV International Symposium Before flue gas desulfurization was installed, the emissions from the Four Corners Generating Station in New Mexico contained a significant amount of sulfur dioxide. The G. G. Allen Steam Station scrubber (North Carolina). Flue-gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide (SO 2) from exhaust flue gases of fossil Flue-gas desulfurization

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Progress of the technique of coal microwave desulfurization

Proper design of microwave desulfurization equipment is the decisive factor to achieve success. Making a survey on the microwave equipment currently used in coal desulfurization studies, some are microwave ovens used in our daily life and some are preferably modified ones while microwave output equipment specially designed for For KR method, the temperature of molten iron needs to be higher as the temperature drop is large and the equipment is complex, which needs large investment. Besides, the iron loss is high because of large amount of slag and it needs two times of slag skimming, which causes long desulfurization period.Simulation Study on Direct Desulfurization of Molten Iron by

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A Review on Desulfurization Technologies of Blast Furnace Gases

Blast furnace gas desulfurization, a source control measure of SO 2, has been applied in hot stoves of iron and steel industries, gas-fired boilers, heating furnaces for steel rolling and so forth. What is more, blast furnace gas desulfurization will be also preferentially adopted in order to cut down pollution emission of iron and steel industries.This paper proposes a novel approach to sulfur removal by adding iron during the digestion process. Iron can react with high-valence sulfur (S2O32−, SO32−, SO42−) to generate S2− at digestion temperature, and then S2− enter red mud in the form of Na3FeS3 to be removed. As iron dosage increases, high-valence sulfur concentration Sulfur Removal by Adding Iron During the Digestion Process of

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Applied Sciences Free Full-Text Review of Coal-Fired

This paper briefly introduces various methods of coal desulfurization (physical desulphurization, chemical desulfurization, biological desulfurization, etc.) and analyzes some problems existing in The kinetics and reaction mechanisms of hot metal desulfurization using CaO and CaC 2 were studied in a well-controlled atmosphere with a lab scale high temperature furnace. The growths of CaS around CaO and CaC 2 were measured and compared at 1773 K (1500 °C). The parabolic rate constant was evaluated to be 5 × 10 Kinetic Study on Desulfurization of Hot Metal Using CaO and CaC

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Desulfurization sorbents for green and clean coal utilization and

With iron oxide being supported on lignite after pyrolysis and gasification to obtain an active semi-coke-loaded iron oxide desulfurization sorbent, the study of Ren et al. showed that iron oxide distributed on the semi-coke surface and pore structures, which increased the contact area of the active components Fe 2 O 3 and H 2 S, strengthened Gas Desulfurization (H₂S removal) Technologies. Common H₂S removal technologies for H₂S removal from biogas fall into one of the following: Absorption into a liquid either water or caustic solution, Adsorption on a solid such as iron oxide based materials or activated carbon, and. Biological conversion by which sulfur compounds convertGas Desulfurization H₂S removal for biogas upgrading

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Desulfurization of low rank coal co-pyrolysis with reduced iron powder

In this paper, guided by the exploration of high-quality desulfurization technology, the desulfurization method of “reduced iron powder + heat treatment + magnetic separation” is proposed. The effects of the heating temperature, heating time, and coal-to-iron powder ratio on desulfurization were investigated.The achievement of higher sulfur removal rates has been an important goal since the development of sulfur removal techniques. 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.Desulfurization of Iron Ores: Processes and Challenges

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Desulfurization of High Sulfur Coal Leached with H2O2 and

Coal desulfurization has been regarded as an effective pretreatment for clean fuel and less environmental pollution. The microwave irradiation was used to desulfurize the Nantong coal leached with H 2 O 2 and NaOH. The results showed the desulfurization rate of the coal is very low by directly microwave irradiation, while the This article examines the issue of reducing the amount of pig iron that is lost when the slag is pumped off during the iron’s desulfurization in BOF shop No. 1 at the Novolipetskii Metallurgical Combine, Tests were conducted of an alternative technology which employs a new desulfurizing agent to treat iron on the desulfurization unit. Minimizing the Loss of Pig Iron During Its Treatment on Pig-Iron

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Deep desulfurization of sintering flue gas in iron and steel works

It can be seen from Figure 1 that in the process of deep desulfurization of sintering flue gas, sodium hydroxide complex is first used to adsorb NO, O 2, and SO 2, and the adsorbed substance has the properties of H 2 O 2 and strong oxidant. Then, NO 3 and SO 2 are converted to NO and SO 3 through oxidation treatment. Finally, nitrite, nitrate, and sulfate A kinetic model for hot metal pretreatment process was developed. The co-injection of soluble magnesium and insoluble lime, and both of the transitory and permanent contact reaction zones were considered in the present model. That is, the model covers all the general features of hot metal desulfurization in the submerged powder injection, Kinetic Simulation of Hot Metal Pretreatment: Desulfurization

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