آخرین محصولات
Production and resource utilization of flue gas desulfurized …
Flue gas desulfurized gypsum (FGD gypsum), mainly originates from thermal power plants, smelters, and large-scale enterprise boilers. This article reviews …
Flue gas desulfurization gypsum: Study of basic mechanical, …
The results of basic characterization of the studied material using the vacuum water saturation method are shown in Table 2.The measurements of cumulative pore volume in Fig. 1, which are performed in the dependence on water/gypsum (w/g) ratio, show that porosity increases very fast with the increasing amount of water in the mixture …
Influence of Calcined Flue Gas Desulfurization Gypsum and …
The desulfurized gypsum also dissolved SO 4 2 ... Both of these reasons could cause some damage to the hardened system. Considering the composition of F1, the excessive sulfate to alumina ratio could favor the stability of ettringite and promote the deposition of gypsum at a later age. This is the main reason for the compressive …
Preparation, characterization and application of red mud, fly …
DOI: 10.1016/j.jclepro.2020.124777 Corpus ID: 226335113; Preparation, characterization and application of red mud, fly ash and desulfurized gypsum based eco-friendly road base materials
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 1, Fade Wu 1, Ying Wang 1, Pengqi Wang 1, Danjun Tan 1, Ming Jian 1 and Liang He 1. ... Analyzing the rules of fracture and damage, and the characteristics of the acoustic emission signal of a …
Characterization of flue gas desulphurized (FGD) gypsum of …
XRD, SEM and elemental characterization of FGD gypsum. X-ray diffraction analysis revealed that the characteristic peaks at 2θ value of 11.8, 20.8 and 23.5 (Fig. 2a) of the FGD gypsum 1 suggested ...
Silage and flue gas desulfurized gypsum as additives …
In this sense, silage (SG) and flue gas desulfurized gypsum (FGDG) are two good choices as composting additives. SG is made from the roughage obtained by cutting corn, sorghum, and other forage crops and grass; the roughage is then subjected to anaerobic fermentation by lactic acid bacteria, which results in the generation of SG [19].
Improvement in Water Resistance of Desulfurized …
Ltd.); Desulfurization gypsum (Huainan Thermal Power Plant). The content of -hemihydrate gypsum and dihydrate gypsum are 71.4% and 14.7%, respectively. Meanwhile, the chemical composition and phase XRD spectrum of the desulfurized gypsum are shown in Table 1 and Fig. 1, respectively; the TG-DSC analysis curve is shown in Fig. 2;
Properties and microstructure of soil solidified by titanium …
An innovative approach suggests using titanium slag and flue gas desulfurized gypsum as substitutes for Portland cement for soil solidification. This study systematically evaluates the effects of titanium slag-flue gas desulfurized gypsum-Portland cement composite (TS-FGD-OPC composite) solidifier on the performance of …
Study on desulfurized gypsum used as cement retarder
Effect of desulfurized gypsum treated with hydrogen peroxide on setting time of Portland cement 3.4. The influence of the mixture of desulfurized gypsum and natural gypsum on the setting time of ...
Sustainable effects of gypsum from desulphurization of flue …
This study evaluated the effects of FGD gypsum on soil physical and chemical properties and heavy metal concentrations after 17 years. Established in 2001, …
Polymers | Free Full-Text | Mechanical Properties and
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 …
South Korea Desulfurized Gypsum Market By Application
South Korea Desulfurized Gypsum Market By Application Construction Agriculture Cement Drywall Others In South Korea, the desulfurized gypsum market is segmented by application into several key areas.
Production and resource utilization of flue gas desulfurized gypsum …
Flue gas desulfurized gypsum (FGD gypsum), mainly originates from thermal power plants, smelters, and large-scale enterprise boilers. This article reviews the production in China and the latest beneficial utilizations of FGD gypsum. China is a large coal-consuming country and has always had serious SO 2 emissions. Therefore, the …
Synergistic effect of red mud, desulfurized gypsum and fly …
DOI: 10.1016/j.conbuildmat.2023.133302 Corpus ID: 261794915; Synergistic effect of red mud, desulfurized gypsum and fly ash in cementitious materials: Mechanical performances and microstructure
Germany Desulfurized Gypsum Market By Application
Germany Desulfurized Gypsum Market By Application Construction Agriculture Cement Production Waste Management Others Desulfurized gypsum, a byproduct of flue gas desulfurization in power plants ...
Application Amount of Desulfurized Gypsum from Coal …
In order to protect national grain safety and ecological safety and develop a sustainable economy,it is important to improve alkaline land with desulfurized gypsum from coal fired power plants.Representative lightly alkalized soil,medium-alkalized soil and seriously alkalized soil in Xidatan of Ningxia Province were selected in the research and used in …
Performance Analysis and Improvement of Gypsum …
Three batches of desulfurized gypsum with different chloride ion content were used to prepare gypsum board. According to JC/T 2074-2011 "Flue Gas Desulfurization Gypsum", the chloride ion contents in
Improvement of Saline-Alkaline Soil via Flue Gas …
Flue gas desulfurization gypsum (FGDG) is an effective soil amendment. However, some heavy metals present in FGDG may enter soil or groundwater due to …
Study on improving properties of desulfurized gypsum …
Two kinds of inorganic reinforcing materials, single Portland cement clinker, compound Portland cement clinker and mineral powder, were used to analyze the effects of desulfurized gypsum on the properties of desulfurized gypsum based cementation material. The results show that either single Portland cement clinker or compound …
Application of Flue Gas Desulfurization Gypsum and Its …
The 11 major electricity-generating coal combustion stations in the northern Great Plains have the potential to produce almost 1 million Mg of flue gas desulfurization …
High value-added utilization of desulfurized building gypsum …
The utilization of desulfurized building gypsum as raw material for gypsum-based self-leveling mortar (GSL) is limited by its low strength and poor water resistance. The objective of this study is to enhance comprehensive properties of GSL and prepare qualified desulfurized building gypsum-based self-leveling mortar that can be …
A comprehensive review of flue gas desulphurized gypsum: …
Flue Gas Desulphurized Gypsum (FGDG) is a by-product generated by the thermal power industry to remove sulfur dioxide (SO 2) from flue gas emissions.This paper provides a comprehensive review of flue gas desulphurized (FGD) gypsum production, property, and applications in the construction industry.
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 ...
Deterioration of mechanical properties and damage …
Jianguo Fan () Author & Article Information. Physics of Fluids 36, 036619 (2024) https://doi/10.1063/5.0198747. Article history. Share. Tools. Flue gas …
The Key Application Technology of Desulfurized …
mortar. Desulfurized gypsum is an industrial by-product gypsum obtained after flue gas desulfurization in coal-fired or oil-fired power plants [1]. Its main components and physical and chemical properties are basically the same as natural gypsum, with higher purity and smaller particle size. Since desulfurized gypsum contains water
Desulfurization gypsum uses and properties
Desulfurized gypsum contains partially unreacted CaCO 3 and partially soluble salts, such as potassium salts and sodium salts. The presence of these impurities promotes the hydration process of cement. Meanwhile, …
Improvement of Saline-Alkaline Soil via Flue Gas Desulfurization Gypsum
[21] Tobert HA and Watt DB 2014 Impact of flue gas desulfurization gypsum application on water quality in a coastal plain soil J Environ Qual 43 273-280. Google Scholar [22] Tong ZJ, Li QS and Zhou YS 2009 Effects of desulfurized gypsum on heavy metal desorption and speciations in tidal flat reclaimed soil Eco and Environ Sci 18 2172 …
Research on saline-alkali soil amelioration with FGD gypsum
As we know, coal is the dominant energy in Chinese energy mix. Almost all of the coal-fired power plants are required to equip desulfurization facility to remove SO 2 in the flue gas, as illustrated in Fig. 1.The most popular desulfurization technology is wet-FGD using limestone, with the product called FGD-gypsum, which main content is CaSO 4. ...
Silage and flue gas desulfurized gypsum as additives …
In this sense, silage (SG) and flue gas desulfurized gypsum (FGDG) are two good choices as composting additives. SG is made from the roughage obtained by cutting corn, sorghum, and other forage crops and grass; the roughage is then subjected to anaerobic fermentation by lactic acid bacteria, which results in the generation of SG [19] .
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