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Kinetics of hot metal desulfurization by bottom-blowing magnesium …

The content of sulfur in commercial pig iron is generally between 400 × 10 −6 and 600 × 10 −6, while that in cast iron is between 40 × 10 −6 and 500 × 10 −6, which means that a controllable desulfurization process for pig iron products is necessary.Magnesium injection is a widely used hot metal pretreatment method with high desulfurization efficiency.

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Effects of nanofiltration on desalination of flue gas desulfurization …

The lime/limestone-gypsum process is widely applied in thermal power plants for flue gas desulfurization [1], [2].A large amount of flue gas desulfurization wastewater (FGDW) was discharged from the desulfurization system to prevent facilities from corrosion and ensure the quality of by-product gypsum [3], [4].Conventional physical and chemical treatment …

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Characteristics of magnesium desulphurization technology

For the magnesium oxide desulfurization technology, the subsequent treatment is more perfect, the regeneration of SO2, to solve the problem of secondary pollution.

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Synergistic effect of the parameters affecting wet flue gas

The desulfurization byproduct of magnesium sulfate (MgSO 4 ), converted from oxidation of magnesium sulfite (MgSO 3 ) by injected air, is generally used as fertilizer or chemical resource raw ...

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Production and resource utilization of flue gas desulfurized …

Flue gas desulfurized gypsum mainly comes from thermal power plants, smelters, and large-enterprise boilers, and contains industrial by-products produced through a wet desulfurization combustion process, where SO 2 gas and lime slurry react under strong oxidation conditions. The main component of this gypsum is calcium sulfate dihydrate, which also …

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(PDF) Flue Gas Desulfurization: Physicochemical and …

The wet scrubbing technologies include wet limestone, lime-inhibited oxidation, limestone forced oxidation, and magnesium-enhanced lime and sodium scrubbing. ... and chemobiological processes for the reduction of the emission of SO2 with recovery of an economic by-product. Flue Gas Desulfurization Approaches 577 Physicochemical Processes for ...

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Magnesium Desulfurization Technology

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. The sulfur dioxide in the smoke would react wit…See more on sbm-mill

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MH53S Mare performances

MH53S Mare is a Magnesium hydroxide suspension specifically engineered to answer the needs of the marine DeSOx EGCS (Exhaust Gas Cleaning Systems): Safety: contrary to alternative alkali sources, MH53S Mare is a non-hazardous material, which contributes positively to crew safety. Reliability: an extremely high purity product of controlled composition Effectiveness: …

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Flue Gas Desulfurization Gypsum

The regeneration of by-products of magnesium oxide desulfurization technology has certain economic benefits [133]. H. Chen et al. used a thermogravimetric analysis (TGA) to study the thermal decomposition and decomposition kinetics of the magnesium-based desulfurization by-product MgSO 3 ·6H 2 O. Magnesium oxide and sulfur dioxide were ...

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Recent advances in process and materials for dry desulfurization …

Although end treatment of wet flue gas desulfurization technologies exhibits high desulfurization efficiency, they are challenged by significant water consumption, complex wastewater treatment, difficulty in handling by-products, and equipment corrosion issues. ... a desulfurization by-product of the magnesium-based desulfurization process, was ...

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Resource utilization of semi-dry flue gas desulfurization ash …

The desulfurization rate (Ds) of SFGDA is defined by the weight change during heat treatment: (2) D s = (1-T S 1 × m 1 T S 0 × m 0) × 100 % where T S0 is the S content in the raw material before calcination, wt%; T S1 is the S content in the raw material after calcination, wt%; D S is the SFGDA desulfurization rate, %; m 0 is the mass of the ...

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Product development of FGD recovered magnesium …

The use of magnesium-enhanced lime avoids the mineral impurities from direct neutralization when using pulverized limestone rock. White, pure FGD synthetic gypsum can be used to produce higher value products such as mineral fillers and industrial plasters. This paper focuses on the product development of the Mg(OH){sub 2} by-product.

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Recovery of magnesium from flue gas desulfurization …

Recovery of magnesium from flue gas desulfurization wastewater using thermomorphic hydrophilicity amines. Author links open overlay panel Wenda Geng a b 1, Juncong Zou a b 1, Qiuya Niu a, ... Meanwhile, the by-products of the treatment are normally not collected, resulting in a waste of resources [25]. Hence, searching for a cheap and efficient ...

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CN103990360A

The invention relates to a resource treatment technology of flue gas pollutants, and aims to provide a continuous concentration purification method for a magnesium oxide desulfurization by-product magnesium sulfate solution. The method is as below: leading out part of magnesium sulfate solution from a desulfurization circulation absorption liquid, adding a filter aid and …

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Studies on magnesium-based wet flue gas desulfurization …

Moreover, magnesium sulfate, which is obtained as the desulfurization product, can be used as an industrial raw material or agricultural fertilizer and has a high economic value [5] [6][7]. To ...

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The Effect of Magnesium Gas Injecting Conditions on the …

Conbination of dilution of magnesium gas by argon gas and use of the injector which has 6 narrow exit holes allows to obtain magnesium efficiency of 74% at a quantity of magnesium of 0.2kg …

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Magnesium Enhanced Quicklime

Magnesium enhanced lime (MEL) plays a critical role in keeping coal-fired boilers in compliance with environmental regulations. It is used in wet flue gas desulphurization (FGD) to reduce sulfur dioxide and other acid gases. MEL is …

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Hydrothermal recovery and reuse of oxidated by-products in …

A large volume of highly concentrated magnesium salt solution is produced during magnesium flue gas desulfurization. Existing method of concentration recovery is relatively …

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Experiment and Mechanism Analysis of Desulfurization with …

To reduce the cost of the current commercial desulfurization and eliminate effluents, the MgO-based desulfurizer fixed bed desulfurization tests were carried out in a dry environment. By means of X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy, the absorption effects of the MgO-based desulfurizer on SO2 …

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Application of recovered magnesium hydroxide from a flue …

Magnesium hydroxide, reclaimed from the flue gas desulfurization system (FGD) at the Zimmer Power Plant, Cincinnati, Ohio, is a weak base, in the form of either a slurry or …

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A review paper: Recent advance catalysts for desulfurization …

Hydrodesulfurization (HDS) is widely applied as an industrial method to eliminate S-compounds in fuel oils. These compounds are changed to matching H 2 S and hydrocarbons in the presence of catalysts such as Ni-Mo/Al 2 O 3 and Co-Mo/Al 2 O 3 at high pressure of 20–100 atm of H 2 and temperature of 300–340 °C. In the following process, H 2 S is separated and …

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Recovery method of magnesium oxide flue gas desulfurization product

Existing magnesium oxide method desulfurization and recovery technological process are as shown in Figure 1.Enter desulfurization in the absorption tower from the flue gas behind the boiler dusting through reheater and pre-wash cooling, flue gas after being purified is sent into smoke stack emission through demist dehydration and hot again the intensification.The desulfurizer …

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WO2019001430A1

Disclosed are a treatment system and method for a process for preparing magnesium sulfate heptahydrate through refining a by-product from desulfurization by magnesium oxide, which are used for recovering magnesium resources in the by-product slurry from desulfurization by magnesium oxide and generating magnesium sulfate heptahydrate. The system comprises a …

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Relevance of the properties and applications of magnesium …

Due to the alkaline and low cost of magnesium hydroxide, it is used in large quantities for waste incineration, desulfurization and denitrification of flue gas in factories, and wastewater treatment. Due to its antibacterial effect, it is also an important filling agent in current dental root canal treatment.

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Effects of steel slag on the properties and microstructure of magnesium …

Magnesium oxysulfate (MOS) cement is a kind of pneumatic cementitious material mixed with light-burned magnesium (LBM) and a certain concentration of magnesium sulfate solution [1]pared with magnesium oxychloride cement, MOS cement offers low thermal conductivity and resistance to high temperatures and steel corrosion [2]pared with …

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The Effect of Magnesium Gas Injecting Conditions on …

reduction of slag and dust as well as recycle and treatment of these by-products are important subjects. Magnesium desulfurization of hot metal itself is a well known technol-ogy,5) but Yang et al.1–4) have shown a possibility of highly efficient magnesium desulfurization of hot metal as shown in Fig. 1. The important concept included in ...

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magnesium desulfurization by-product treatment

Treatment of industrial wastewater produced by desulfurization process ·1 Introduction During the last several decades energy consumption has significantly increased in the world Electricity usage is known to be approximately 24 659 TWh and it is expected to double by 2040 Stern 2011; Koplitz et al 2017 To meet the demand for increasing electricity consumption conventional …

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TIMRIDE-UP

GASTRIC COMFORT FOR HORSE PERFORMANCE Gastric acidity, in certain situations such as intensive training, can create lesions in the stomach lining. These lesions or gastric ulcers can cause pain and poor performance(1). TIMRIDE-UP thanks to its acid neutralisation efficiency, is your horse's ally, for GASTRIC COMFORT at the service of performance. This unique product …

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LIMESTONE FINES AND LIME SLUDGE: FROM BY-PRODUCT …

Similarly, a large amount of lime sludge is produced in the United States from water treatment plants that use lime softening to reduce the calcium and magnesium hardness of the source water.