Research on the method of improving the influence of chloride ion on the performance of desulfurized gypsum products [J]. New building materials. 2014, 11: 41-45.
ادامه مطلبDOI: 10.1016/j.conbuildmat.2024.137061 Corpus ID: 270530557; Properties and microstructure of soil solidified by titanium slag-flue gas desulfurized gypsum-Portland cement composites as solidifiers
ادامه مطلبFrom the experiment, it was found that the highest compressive strength of concrete brick specimens was 45.18 MPa, which was produced from 5.5% gypsum without CDW and OPT, while 26.84 MPa was the ...
ادامه مطلبFlue 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 ...
ادامه مطلبCurrent 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 …
ادامه مطلبThe production of flue gas desulfurization gypsum poses a serious threat to the environment. Thus, utilizing gypsum-based self-leveling mortar (GSLM) stands out as a promising and effective approach to address the issue. β-hemihydrate gypsum, cement, polycarboxylate superplasticizer, hydroxypropyl methyl cellulose ether (HPMC), retarder, …
ادامه مطلبThe use of waste to capture CO 2 has been on the rise, to reduce costs and to improve the environmental footprint. Here, a flue gas desulfurization (FGD) gypsum waste is proposed, which allows us ...
ادامه مطلبIn order to explore the influence of the types of waste gypsum on the properties of alkali slag cement, fluorogypsum (FG) and flue-gas desulfurization (FGD) gypsum were comparatively investigated. Moreover, the action mechanisms of FG and FGD gypsum on the properties of alkali slag cement were analyzed. The results …
ادامه مطلبThe main utilization method of FGD gypsum is still used in construction materials (Ye et al., 2019). As an auxiliary material or instead of natural gypsum, it can be widely used in concrete, walls, concrete, etc. It is the best way to use desulfurized gypsum in large quantities, but its economic value is relatively low (Pedreno-Rojas et …
ادامه مطلبGypsum shipments from the Sultanate of Oman, currently the world's biggest exporter of the industrial mineral, are projected to grow exponentially over the …
ادامه مطلبAlawi Zawawi, Vice Chairman of USG Boral Zawawi Gypsum, a leading player in the export of natural gypsum, said that Oman has the potential to export …
ادامه مطلبOman Gypsum quarry is located 19 km South of Thumrait city, Salalah. Thumrait is the nearest city. Quarry is located 4 Km (well graded road) away from the Muscat- Salalah dual carriage main highway. Nearest sea port for shipment is Salalah Port. This is well connected with high quality road network of Oman. Salalah Port is located 82.0 Km from …
ادامه مطلبThe occurrence of Hg(I) was widely evident in various solid matrices, including desulfurized gypsum, fly ash, phosphorus powder in used fluorescent lamp, PM2.5, soil, and plant, despite Hg(I ...
ادامه مطلبThis study evaluated the effects of FGD gypsum on soil physical and chemical properties and heavy metal concentrations after 17 years. Established in 2001, …
ادامه مطلبIn 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 …
ادامه مطلبWhat 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 …
ادامه مطلبdesulfurized gypsum mortar system has explored the composition of cement, FA, and FGD through experiments [4]. The cement content is initially set at 10%-20% of the cementitious material, and FA is added. The amount is 10% to 60%, and the FGD is 20% to 70%; methyl cellulose ether is blended at 0.1% of the mass of ...
ادامه مطلبSoluble P 2 O 5 and fluorine in phosphogypsum can jeopardize the environment and even human health. The application in building materials is a pathway to consume phosphogypsum on a large scale. However, the presence of soluble phosphorus causes significant retardation that reduces the early strength of building materials …
ادامه مطلبWith steel slag and desulfurized gypsum as main raw material,mixed appropriate amount slag and compound addition a little of activator,and based on orthogonal test,we explored the slag dosage,the proportion of the combined admixture activator and the desulfurized gypsum dosage impact on the performance of clinker-free cementing material,such as …
ادامه مطلب1 Citations. Abstract. With emission control becomes more and more stringent, flue gas desulphurization (FGD) is commonly employed for desulfurization. …
ادامه مطلبLiu, S., Liu, W., Jiao, F., Qin, W., & Yang, C. (2021). Production and resource utilization of flue gas desulfurized gypsum in China - A review.
ادامه مطلبDOI: 10.1016/j.conbuildmat.2023.131840 Corpus ID: 258997305; Effects of hybrid fibers on properties of desulfurized gypsum-based composite cementitious materials @article{Lv2023EffectsOH, title={Effects of hybrid fibers on properties of desulfurized gypsum-based composite cementitious materials}, author={Fangtao Lv …
ادامه مطلبThe weighed fly ash, desulfurized gypsum, cement and silt are poured into the mixer for dry mixing for about 1 min. Next, pour half of the weighed water and stir for 30 s, followed by adding the remaining water and mixing for about 3 min to create a desulfurization gypsum–fly ash fluidized lightweight soil slurry. Pour the slurry into a test ...
ادامه مطلبIt is a natural material which makes it environmentally safe to use. GGC Agriculture Gypsum is the ultimate easy-to-use and affordable option to enhance the sulfur content and treat the dangerous salts. It is a well-proven solution that can achieve many beneficial results ... P.O.Box 485, Postal Code: 211,Salalah, Sultanate of Oman (+968) 23219355.
ادامه مطلبThe 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 …
ادامه مطلبXiao et al. [27] utilized β-hemihydrate gypsum and sulfoaluminate cement in GSLM preparation, resulting in a well-connected structure and robust mechanical …
ادامه مطلبThe desulfurized gypsum application rates varied between 0 and 50 t·hm-2 across six treatment levels, based on the soil Na + and Mg 2+ exchange capacity. A control group was included at 0 t·hm-2. Each treatment consisted of five experimental plots, including three for soil profile sampling and two for backfilling to mitigate the impact of ...
ادامه مطلبThe fastest growing export markets for Gypsum of Oman between 2021 and 2022 were India ($25.7M), Nepal ($2.29M), and Indonesia ($1.5M). Imports In 2022, Oman imported $559k in Gypsum, becoming the 130th largest importer of Gypsum in the world. At the same year, Gypsum was the 854th most imported product in Oman.
ادامه مطلبFlue gas desulfurized gypsum (FGD gypsum), mainly originates from thermal power plants, smelters, and large-scale enterprise boilers. This article reviews …
ادامه مطلبA monolayer adsorption capacity of 39.2 mg/g was reported with the use of gypsum. Even though the underlying mechanism was described as adsorption, a detailed explanation was not given. ... (Oriza sativa L.) growth and yield using desulfurized gypsum in the west of Songnen Plain, northeast China Geoderma, 187–188 (2012), ...
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