At RIECO, we harness the power of innovation, engineering excellence, and rigorous research to deliver world-class Flue Gas Desulfurization (FGD) systems. We're …
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DOI: 10.1016/j.jmrt.2022.10.157 Corpus ID: 253391444; Solid waste-based dry-mix mortar using fly ash, carbide slag, and flue gas desulfurization gypsum @article{Duan2022SolidWD, title={Solid waste-based dry-mix mortar using fly ash, carbide slag, and flue gas desulfurization gypsum}, author={Dedan Duan and Hongqiang Liao …
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Mica schist weathered soil possesses a number of poor engineering characteristics, which make it difficult to use as a subgrade material for resource utilization. Therefore, in this study, a new type of curing agent, CFSD (cement–fly ash–slag–desulfurized gypsum), is proposed for this soil. The effects of different curing …
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The semi-dry flue gas desulfurization ash (SFGDA) is an industrial waste generated by the semi-dry desulfurization process, and its resources have been continuously attracted attention. Through the method of heat decomposition, the SFGDA decomposed into CaO and SO2 has emerged as a prominent research topic. This paper …
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F lue gas desulfurization gypsum (FGDG) is a synthetic gypsum that is created during the removal of SO 2 from flue gas by reacting the SO 2 with calcite (CaCO 3) to form calcium sulfite (CaSO 3 ·0.5H 2 O), which is further treated with wet limestone and forced oxidization to form calcium sulfate (CaSO 4 ·2H 2 O) (Laperche and Bigham, …
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Current study proposes an effective way to modify the properties of super-sulfated cement (SSC) paste and mortar with preheated flue gas desulfurization (FDG) gypsum at different temperatures and durations, and different sulfate compositions. Preheated FGDs with temperatures between 25 and 150 °C and durations between 0 …
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Request PDF | On Nov 1, 2019, Haoxin Li and others published Utilization of low-quality desulfurized ash from semi-dry flue gas desulfurization by mixing with hemihydrate gypsum | Find, read and ...
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Effects of dry flue gas desulfurization (FGD) byproduct and FGD gypsum as retarder on the hydration heat emission behavior and mineralogical formation of hydrated products in hydration of clinkers ...
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The synthesis of α-calcium sulfate hemihydrate (α-CSH) from flue gas desulfurization (FGD) gypsum is a good way to realize the comprehensive utilization of FGD gypsum. To obtain α-CSH with the satisfactory performances, a facile hydrothermal-aging pretreatment process for FGD gypsum raw materials was proposed, where FGD …
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Gypsum–urea is a kind of urea product with substantially reduced aqueous solubility and lower hygroscopicity that increases the soil retention time of urea and thus enhance its environmental sustainability. Here, gypsum–urea was prepared using bulk industrial solid waste flue gas desulfurization (FGD) gypsum as a raw material in a …
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Fly ash–slag-based alkali-activated materials have excellent mechanical performance and a low carbon footprint, and they have emerged as a promising …
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The semi-dry flue gas desulfurization ash (SFGDA) is an industrial waste generated by the semi-dry desulfurization process, and its resources have been …
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Gypsum plasters are among Poland's most-widely used finishing materials for walls inside buildings. Gypsum binder, which is the main binder used in these materials, can be obtained by the calcination of calcium sulfate dihydrate mined from natural deposits or as a by-product from the flue gas desulfurization (FGD) process of sulfur dioxide …
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Performance Characterization and Composition Design Using Machine Learning and Optimal Technology for Slag–Desulfurization Gypsum-Based Alkali-Activated Materials July 2024 Materials 17(14):3540
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1. Introduction. Flue gas desulfurized gypsum mainly comes from thermal power plants, smelters, and large-enterprise boilers, and contains industrial by-products …
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Recovering gypsum from flue gas desulfurization (FGD) plants is becoming more important as the ... Capacity per machine 5 tons/hour 11 tons/hour Number of machines with standby 6 3 Residual Moisture 6% 6% (with steam dewatering) ... Total Costs/Ton of Dry Gypsum (Estimated) 1.13 – 1.24 1 ROTARY VACUUM FILTERS
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Semi-dry flue gas desulfurization ash (SFGDA) is an abandoned Ca and S resource that is currently stacked without appropriate disposal methods. A technology with industrialization potential, SFGDA, and iron ore thermal processing is an effective approach to obtaining calcium ferrite and industrial sulfuric acid. This study investigated the …
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Bibliometric analysis is a useful tool for evaluating research progress on FGD (flue gas desulfurization) gypsum as a sustainable building material. ... LOI (Loss …
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Abstract: As a recycled material, flue gas desulfurization gypsum has been used to prepare calcium sulfate hemihydrate whisker (CSHW) through hydrothermal synthesis for several decades. However, the subsequent utilization of this resultant material has not yet received considerable attention. In the present research, CSHW was successfully …
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The GGBS-FA AAMs have the characteristic of drying shrinkage and a large number of tiny pores distributed in the matrix, resulting in strength deterioration. ... The paper is aimed to optimize the strength property by incorporating another solid waste of flue gas desulfurization gypsum (DG), which could be regarded as a ternary alkali …
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The effective and safe use of FGD gypsum in agricultural land is still debated in some countries even though its effectiveness in soil management has been reported in many studies. Thus, the changes in …
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Gypsum Dryer Specification. Production capacity: 1.5-59 t/h Supported fuels: steam, coal, natural gas Applicable materials: desulfurization gypsum, phosphogypsum, titanium gypsum, fluorogypsum, salt gypsum, chemical gypsum and other materials.
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Calcium sulfate hemihydrate whiskers (CSHW), a multi-functional and high value-added building material, were prepared with flue gas desulfurization (FGD) gypsum by hydrothermal method, which …
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The gypsum drying machine, specifically engineered to accommodate the characteristics of gypsum, efficiently dries gypsum with high moisture content, thereby enhancing its versatility and application value. ... Gypsum dryers can handle various materials such as desulfurization gypsum, phosphogypsum, titanium gypsum, fluorine gypsum, salt …
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Flue gas desulfurization (FGD) is a critical process for reducing sulfur dioxide (SO2) emissions from industrial sources, particularly power plants. This research …
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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 …
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1. Introduction. 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 …
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There are several ways that CFPPs can reduce SO2 emissions including conventional wet and dry scrubbing technologies. This paper will examine wet flue gas desulfurization …
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Flue gas desulfurization gypsum (FGDG), the by-product of wet and semi-dry desulfurization processes, has been used as an alkali soil amendment in China. We evaluated the change in soil properties, agricultural production and the safety of FGDG as a soil amendment. As a result, soil pH and ESP (exchangeable sodium percentage) …
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To investigate the macroscopic mechanical properties and failure evolution mechanism of desulfurization gypsum–fly ash fluid lightweight soil, a microscale numerical model using PFC2D (Particle Flow Code) was constructed. Uniaxial compression tests were conducted to determine the microscopic parameters of the model, extracting …
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What is desulfurization gypsum. Desulfurization gypsum, also known as FGD gypsum (flue gas desulfurization gypsum), is an industrial by-product gypsum obtained by desulfurization and purification of flue gas generated after combustion of sulfur-containing fuel (coal, oil, etc.), and its composition is calcium sulfate dihydrate (CaSO 4.2H 2 O).. …
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Desulfurization gypsum dryer, also known as gypsum drying machine, is widely used for drying in industries such as cement, mining, building materials, chemical, food, fertilizer production, etc. In order to control the temperature of the dryer, we install a thermocouple on the feeding and discharging ends, the temperatures of the feeding and ...
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