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Vietnam imports desulfurized gypsum to meet building …

On April 17, a train loaded with desulfurized gypsum slowly pulled out from Bijie East Station and was transported to Fangchenggang Station in Guangxi to realize the export of bulk solid waste. This train is Guizhou's first complete desulfurization gypsum foreign trade train. The desulfurization gypsum loaded on the train will be transported ...

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Utilization of low-quality desulfurized ash from semi-dry …

This work aimed to investigate the feasibility of utilizing the low-quality desulfurization ash from semi-dry flue gas desulfurization by mixing with α-hemihydrate gypsum, and then the environmental issues resulted from low-quality desulfurized ash from semi-dry flue gas desulfurization can be resolved, and both economic and …

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Preparation and characterization of industrial solid waste …

The materials used for the preparation of geopolymer come from a wide range of sources, among which the bulk industrial solid waste is one of the cheapest and most readily available raw materials. Steel slag (SS), fly ash (FA) and desulfurization gypsum (DG) are both by-products of the industrial production process.

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Mechanical Properties and Coagulation Characteristics of …

In the limestone gypsum flue gas desulfurization process, 2.7 ton of desulfurized gypsum can be generated for each 1 ton of SO 2 removed . A 300 MW coal-fired thermal power …

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Flue gases: Gypsum dewatering in desulphurisation

The combustion of sulphur containing fossil fuels requires downstream flue gas cleaning, which is often accomplished by wet processes. This is where the raw flue gas is cleaned in an absorption …

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Performance Analysis and Improvement of Gypsum Board …

Chloride ion has an important influence on the performance of gypsum board prepared by desulfurization gypsum, especially in wet environment. Therefore, this paper analyzed the influence of chloride ion on the bonding propertiesof gypsum board and studied the ways to improve the bonding properties of gypsum board prepared by desulfurization gypsum …

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Desulfurized Gypsum Market Share: 2031 Findings

The Desulfurized Gypsum Market size was valued at USD xx.x Billion in 2023 and is projected to reach USD xx.x Billion by 2031, growing at a CAGR of xx.x% from 2024 to 2031.. Desulfurized Gypsum ...

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Leaching Characteristics of Trace Elements in Desulfurization Gypsum

FGD gypsum was collected from a 200 MW coal-fired power plant and chemical composition of the gypsum is shown in Table 1 pH of leaching solution is shown in Table 2.Leaching solution was prepared by mixing NaOH, CH 3 COOH and deionized water, for example, 1# solution: Mixed 80 mL 1N NaOH solution, 6 mL glacial acetic acid …

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Mechanical Properties and Coagulation Characteristics of …

In the limestone gypsum flue gas desulfurization process, 2.7 ton of desulfurized gypsum can be generated for each 1 ton of SO 2 removed . A 300 MW coal-fired thermal power unit discharges about 30,000 ton of desulfurized gypsum every year (assuming 1.0% sulfur in coal) . A substantial amount of desulfurized gypsum is generated as a by-product ...

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Effects of flue gas desulfurization gypsum incorporation and …

Flue gas desulfurization gypsum is used to add to magnesium oxysulfate cement. • The macro and micro effects of the flue gas desulfurization gypsum admixture and curing temperature on magnesium oxysulfate cement was discussed. • Under 40 °C curing, MOSC exhibited an increase in strength as well as a significant improvement in …

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Performance Analysis and Improvement of Gypsum Board …

Performance Analysis and Improvement of Gypsum Board Prepared from Desulfurized Gypsum with High Chloride Ion Content, Dongjie Yin, Fade Wu, Ying Wang, Pengqi Wang, Danjun Tan, Ming Jian, Liang He

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Microwave drying of flue gas desulfurized (by-product) gypsum

The objective of this research by the U.S. Bureau of Mines (USBM) was to determine the technical feasibility and associated pilot-scale data for drying powdered flue gas desulfurized (FGD) gypsum with microwave energy at a frequency of 2.45 GHz.

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The abatement of fine particles from desulfurized flue gas …

The objectives of this work were to investigate the fine particle removal performance by heterogeneous vapor condensation coupling TIS technique after wet limestone-gypsum desulfurization process. The essential supersaturation was established by adding steam (105 °C, 0.1 MPa) or humid air (20 °C, 90%RH) into desulfurized flue …

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High value-added utilization of desulfurized building gypsum …

Desulfurized building gypsum (DBG) has great application potential and can be used to produce lightweight plastering gypsum (LPG). In this work, DBG was modified by adding different proportions of ...

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Solidification and Release Characteristics of Heavy Metals in Gypsum …

After curing the desulfurized gypsum from coal-fired power plants via the chelation method, the group with the best curing effect (i.e., the group with an 8% mass fraction) was selected for the experiment on the environmental release characteristics. The effects of the water contents (0%, 5%, and 15%), initial pH values (pH = 6, 8, 10, and 12 ...

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Influence of Calcined Flue Gas Desulfurization Gypsum and …

At present, the industrial utilization of desulfurized gypsum has become one of the main research directions of scholars. Comprehensive utilization of …

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Experimental Study on the Carbonation Properties of Dry …

of dry desulfurized gypsum, indicating that the dry desul-furized gypsum did not have a specific microstructure. The mean particle diameter was about 20 µm. 3.2. Carbonization of dry desulfurized ...

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Properties and microstructure of soil solidified by titanium …

The Portland cement-fly ash-desulfurized gypsum composite solidifier brings the dredged soil to have higher strength and good resistance to dry-wet cycles [24]. Titanium slag is the residue after the titanium extraction from high titanium-type blast furnace slag. Currently, there are 80 million tons of titanium slag in China, with an annual ...

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Primary study on functional desulfurized gypsum …

In this paper, the functional gypsum fiberboard is produced with desulfurized gypsum and fiber materials. The new type of gypsum fiberboard was produced through semi-dry process. The experimental ...

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A brief review on flue gas desulfurization gypsum recovery …

Abstract. The past several years have witnessed great progress in utilization of industrial waste gypsum. Newly developed carbonation technology toward CaCO 3 preparation …

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Desulfurized Gypsum Market Research Report 2024

The "Desulfurized Gypsum Market" reached a valuation of USD xx.x Billion in 2023, with projections to achieve USD xx.x Billion by 2031, demonstrating a compound annual growth rate (CAGR) of xx.x ...

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Flue Gas Desulfurization Gypsum

The semi-hydrate content of desulfurized gypsum is adjusted as a natural plaster substitute for producing gypsum board, wallboard [107].The modified treatment of …

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Application of Desulphurized Gypsum with Straw to Improve

Urban dust samples were taken from the playgrounds of 27 schools located in the urban area of the city of Murcia (S.E. Spain). Their color and degree of magnetism were determined, as well as their ...

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Application of desulfurization gypsum as activator for …

Recycling industrial solid waste for mine backfill is one of the best ways to achieve green production in multiple industries. In this paper, the desulfurization gypsum (DG) as an activator is combined with the modified magnesium slag-fly ash cementitious paste backfill (MFPB) technology for the co-disposal of solid waste and goaf treatment, …

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Investigation on the effects of desulfurization gypsum on …

Preparation, characterization and application of red mud, fly ash and desulfurized gypsum based eco-friendly road base materials. Clean. Prod., 284 (2021), Article 124777, 10.1016/j.jclepro.2020.124777. View PDF View article View in Scopus Google Scholar. Meskini et al., 2021.

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Evaluation of FGD Gypsum as a Soil Amendment

Use of a wet scrubber results in the byproduct flue gas desulfurized (FGD) gypsum. Currently, FGD gypsum represents one of the largest non-mined supplies in the US. The US-EPA estimated that 12 million tons were produced in 2006, with about 9 million tons beneficially reused. It is estimated that 80% of the reused material was for the ...

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Effects of hybrid fibers on properties of desulfurized gypsum …

The undisturbed desulfurization gypsum after screening was calcined at 180 °C for 2 h and sealed at room temperature for about 7 d to form semi-hydrated desulfurized gypsum. Fig. 1 shows the microscopic morphology and X-ray diffraction (XRD) diagram of desulfurization gypsum. The quicklime was taken from Yibin …

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Experimental Study on Desulfurized Gypsum Modified …

The influences of desulfurization gypsum on the properties of both Magnesium oxychloride cement (MOC) pastes and MOC abrasive tools were investigated in this study.