Process for desulfurization of ferrous metal melts - Armco ...

A process for magnesium desulfurization of ferrous metal melts in a vessel comprising the provision of a fluid, high sulfur capacity slag wherein the weight ratio of slag constituents associated with sulfur to slag constituents associated with oxygen is greater than 0.8, followed by addition of magnesium to the melt in an amount sufficient to combine with the sulfur in the melt, transfer to ...

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Improvement of Desulfurization Efficiency of Molten Iron ...

Based on the desulfurization process of molten iron with magnesium vapor produced in situ by the aluminothermic reduction of magnesium oxide, methods for improving the desulfurization efficiency ...

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Desulfurization – XINTAI

Magnesium oxide method: Magnesium oxide: Magnesium oxide and water toproduce magnesium hydroxide,and then react with S2O to generatemagnesium sulfate, soluble: 1. High desulfurizationefficiency. 2. No fouling. 3. No corrosive. Compared to double-base operation costs are higher, lower than other methods.

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Application

Magnesium oxide desulfurization process was widel. Applications of Calcium Carbonate. 1. Introduction of Calcium Carbonate Calcium carbonate, or CaCO3, is found throughout the world and is one of the most commonly occurring minerals. In its natur. Limestone-Gypsum FGD Wet Desulphurization. 1. Introduction of Flue-gas Desulfurization

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Effect of magnesium injection process on hot metal ...

Magnesium injection is a widely used hot metal pretreatment method with high desulfurization efficiency. However, the traditional magnesium particulate injection process has certain problems, such as insufficient kinetic conditions in a molten pool, a short residence time of the desulfurizer in the reactors and splashing caused by rapid gasification of magnesium particulate, …

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Treball Final de Grau - Universitat de Barcelona

firing process. The reuse of by-products like Low Grade Magnesium Oxide (LG-MgO) during the calcination of magnesite for flue gas desulfurization (FGD) can generate a loop process optimizing the efficiency and revaluating those by-products. FGD is the widest applied measure for SO2 reduction. It allows an industrial plant to

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Solution

Magnesium Oxide Desulfurization Technology. Magnesium oxide desulfurization technology is a promising desulfurization process, which is relatively mature. Magnesium oxide desulfurization process was widely used all over the world. Among them, more than 100 projects have been applied in Japan. 95% of Taiwan's power plants […] Learn More >>

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CN108373315B - Device and method for producing magnesium ...

The invention provides foamed products, a production device and a method thereof, wherein the device comprises a flue gas desulfurization device, a slurry storage device, a reaction device, a magnesium oxide supply device, a sulfuric acid supply device, a waste ash supply device, a slag charge supply device, a foaming component supply device, other additive supply devices and a mixing ...

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Reutilization of low-grade magnesium oxides for flue gas ...

The aim of this research work was to assess the desulfurization capacity of some of these magnesium oxide by-products. In particular, the study will focus on the flue-gas desulfurization from magnesite calcination, which would close the cycle of the process using the own by-products in the gas treatment system.

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Desulfurization Technology in the Blast Furnace Raceway by ...

nesium oxide in the steelmaking process, report that this desulfurization is highly effective. We studied the possibility of desulfurization using the magnesium gas generated by reducing the mixture of pul-verized coal and magnesium oxide in the high-temperature region …

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Summary Report: Sulfur Oxides Control Technology Series ...

-------f I Introduction The magnesium oxide (MgO) flue gas desulfurization (FGD) process (Figure 1) is a sulfur dioxide (SO2) recovery system that uses a recircu- lating MgO slurry to remove SO2 from stack gas. The slurry reacts with SO2 to form magnesium sulfite (MgS03), which is then heated to regenerate MgO.

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Improvement of desulfurization efficiency of molten iron ...

12%Based on the desulfurization process of molten iron with magnesium vapor produced in situ by the aluminothermic reduction of magnesium oxide, methods for improving the desulfurization efficiency of magnesium ( η S,Mg) have been studied.

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Magnesium Desulfurization Technology

Magnesium Desulfurization Technology Magnesium Desulfurization & Its Advantages. Magnesium desulfurization refers that after the magnesite is calcined, the resultant--- magnesium oxide as desulfurization absorbent would be produced by seriflux production system into magnesium hydroxide which is then fully mixed with smoke in desulfurization absorbing tower.

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Improvement of desulfurization efficiency of molten iron ...

Based on the desulfurization process of molten iron with magnesium vapor produced in situ by the aluminothermic reduction of magnesium oxide, methods for improving the desulfurization efficiency of magnesium (η S,Mg) have been studied.. By use of the mixed-control model of gas- and liquid-phase mass transfer developed in a previous article, it is shown that η S,Mg can be improved by reducing ...

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US4490341A - Flue gas desulfurization process - Google Patents

A wet scrubbing process for desulfurization of waste gas which employs calcium carbonate reactant in the presence of a magnesium compound wherein the magnesium compound is obtained from partially calcined, magnesium-containing limestone.

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Reutilization of low-grade magnesium oxides for flue gas ...

The commonly used desulfurization processes are mainly classified as pre-combustion and post-combustion processes [6]. At present, the most effective technique to control SO 2 emissions is flue gas desulfurization (FGD) [4]. It consists of scrubbing the exhaust gases with an alkaline component.

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Application of magnesium flue Gas Desulfurization ...

Firstly, the magnesium hydroxide slurry is made by hydration of magnesium oxide from flue gas desulphurization process by magnesium method. The slurry is circulated to the absorption tower by pump. The sulfur dioxide in the flue gas is absorbed with magnesium hydroxide to form magnesium sulfite containing crystalline water and a small amount of ...

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Desulfurization of Molten Iron with Magnesium Vapor ...

of magnesium oxide was injected directly into molten iron with argon carrier gas. The effects of temperature, pellet mass, initial sulfur concentration and carrier gas flow rate on desulfurization were studied experimentally. A mathe-matical model for analyzing this desulfurization process was developed and the mechanism of desulfurization ...

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Flue gas desulfurization process - The M. W. Kellogg Company

United States Patent 4490341. A wet scrubbing process for desulfurization of waste gas which employs calcium carbonate reactant in the presence of a magnesium compound wherein the magnesium compound is obtained from partially calcined, magnesium-containing limestone. Cares, Ronald W. (Houston, TX) The M. W. Kellogg Company (Houston, TX) 423/169.

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Studies on magnesium-based wet flue gas desulfurization ...

Highlights A systematical study on a novel magnesium-based WFGD process with a spray scrubber. Na 2 S 2 O 3 was found effectively to inhibit the oxidation of desulfurization byproduct. The desulfurization efficiency could reach a high level above 90%. A desulfurization process model was established by the double-film theory. The desulfurization process was found to be controlled …

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Magnesium Oxide - Liaoning Dan Ding Industrial Group Co., Ltd.

For the limestone gypsum system, the liquid-to-gas ratio is generally above 15 L/m3, and the magnesium oxide is below 7 L/m3, so that the magnesia desulfurization process can save a large part of the cost. At the same time, the sale of by-products of magnesium oxide …

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Magnesium Oxide Wet Scrubbing System for Flue Gas ...

The SO 2 is absorbed in the scrubber slurry and forms insoluble magnesium sulfite (MgSO 3 ) as in the equation below. MgO(s)+ SO 2 (g)→MgSO 3 Oxygen injected at the base of the scrubber further oxidizes the MgSO 3 to magnesium sulfate (MgSO 4 A bleed line from the scrubber recirculation line carries the slurry to a centrifuge where MgSO 3

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Prevention of Resulfurization in Desulfurization Process ...

The mechanism of resulfurization in the desulfurization process with magnesium vapor produced in situ by aluminothermic reduction of magnesium oxide was clarified in the present work.

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Theoretical and experimental investigation on improvement ...

12%Flue gas desulfurization (FGD) technologies are applied to minimize SO 2 emission to the atmosphere and prevention of acid rains. Magnesium oxide (MgO) is one of the common sorbents to capture sulfur dioxide in FGD. Pore blockage and incomplete conversion are the main problems of sorbents such as CaO and MgO.

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High Activity Magnesium Oxide Used In Flue Gas …

3. Magnesium oxide desulfurization characteristics: Magnesium oxide desulfurization is a promising desulfurization process, which is mature and has abundant sources of raw materials. The reserves of magnesium oxide in China are considerable. Therefore, magnesium oxide can be used as desulfurizer in desulfurization …

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[Mechanism and technology of recovery flue gas ...

It can be concluded that magnesium desulfurization process is controlled by the mass transfer of sulfur dioxide at the gas-liquid interface, especially the chemical absorbent reaction in liquid ...

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China Magnesium Oxide For Flue Gas Desulfurization ...

Application: Magnesium Oxide For Flue Gas Desulfurization, MgO is calcined from raw magnesite at arround 900℃. Magnesium Oxide 92%, due to high acititvity, it is recomended to used to solve many enviromental problems, such water treatment, soil decontamination, Flue Gas Desulfurization.

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China Magnesium Oxide Flue Gas Desulfurization Suppliers ...

Magnesium Oxide Flue Gas Desulfurization . Flue gas desulfurization process . The process, form, and mechanism of wet flue gas desulphurization in various countries are almost the same, mainly using limestone (CaCO3), lime (CaO) or sodium carbonate (Na2CO3) and other grout as detergent to wash the flue gas in the reaction tower, so as to remove SO2 in the flue gas. This process has a history ...

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(PDF) Desulfurization of Molten Iron with Magnesium Vapor ...

Numerous studies were carried out to study the effect of magnesium on the desulfurization and the control of oxide inclusions. Yang et al. [11] studied the desulfurization of molten iron with ...

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Application of magnesium flue Gas Desulfurization ...

the design of magnesium flue gas desulfurization process includes flue gas system, preparation and transportation system of magnesium oxide desulfurizer slurry, sulfur dioxide absorption system, desulfurization tower emptying system, magnesium sulfite dehydration system, water supply and drainage system, miscellaneous and instrument compressed …

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Clean Energy Project Tech Group_clean energy_power ...

At the beginning of 2000, the desulfurization system of Zhangzhou Power Plant, which was changed to NSW process, was completed and put into operation: only the raw water was retained, and the raw materials such as magnesium oxide were completely abandoned.

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Reutilization of low-grade magnesium oxides for flue gas ...

The residual solids obtained at the end of the process were mainly composed of unreacted magnesium and calcium compounds and reaction products CaSO 4 ·2H 2 O and MgSO 4 ·6H 2 O which can be used as fertilizers. Therefore, the reutilization of these by-products in a wet flue gas desulfurization process is a feasible and sustainable choice that ...

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Performance of Magnesium Hydroxide-Gypsum Flue Gas ...

The ordinary wet magnesium hydroxide flue gas desulfurization (FGD) process is a throwaway process that discharges magnesium sulfate in the wastewater. It is the most popular process for all FGD plant sizes because of its simplicity and low initial cost, while being exposed to increasing environmental restrictions and higher absorption medium ...

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CN106467387A - A kind of magnesium processes ...

CN106467387A CN201510512552.5A CN201510512552A CN106467387A CN 106467387 A CN106467387 A CN 106467387A CN 201510512552 A CN201510512552 A CN 201510512552A CN 106467387 A CN1064673

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Synergistic effect of the parameters affecting wet flue ...

Nevertheless, the synergistic effect of the most important parameters affecting the degree of desulfurization using magnesium oxide by-products has not yet been reported. The aim of this paper is to verify whether or not there is a synergistic effect between the variables on the final results of the wet FGD process or parameters affecting its ...

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Experiment and Mechanism Analysis of Desulfurization with ...

In all the methods, a wet magnesium oxide method is developed and popularized. Wet magnesium oxide is the reaction of MgO and water to produce a magnesium hydroxide slurry for flue gas desulfurization. This method has a high efficiency and does not clog the device but the desulfurization effluents are large and difficult to deal with.

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China Caustic Calcined Magnesite 92% Suppliers, Producer ...

Magnesium oxide wet desulfurization, sulfur dioxide in the flue gas reacts with magnesium hydroxide to generate magnesium sulfite to achieve the desulfurization effect, magnesium sulfite physical property belongs to the insoluble substance, which is partially converted into magnesium sulfate under the action of the oxidation fan.

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Manufacturing - TIMAB Magnesium

Magnesium oxide and hydroxide are used in the production of fuel additives to prevent low and high temperature corrosion by capturing and neutralizing vanadium and sulfur compounds in the combustion process. We offer reliable grades of Magnesium oxide and Magnesium hydroxide with low impurity levels, suitable for fuel additives production.

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magnesium processing | Techniques & Methods | Britannica

magnesium processing, preparation of magnesium ore for use in various products.. Magnesium (Mg) is a silvery white metal that is similar in appearance to aluminum but weighs one-third less. With a density of only 1.738 grams per cubic centimetre, it is the lightest structural metal known. It has a hexagonal close-packed (hcp) crystalline structure, so that, like most metals of this structure ...

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