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·Desulfurization gypsum has the same properties as natural gypsum and can be widely used in building materials agriculture material synthesis soil When the amount of desulfurized ash was 10% the ventilation volume was 220 mL/min and the roasting temperature was 900 °C the sulfur escape rate reached %
·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 pot and
·This study aims to investigate the subsurface gravel ditches and desulfurization gypsum DG as amelioration methods for alkalized solonchak soils in Gansu Jingyuan of China 37°02 N 104°96 E
·The test takes the cementing system composed of ordinary Portland cement and desulfurized building gypsum as the research object and the research is carried out based on the mechanism of the
·To effectively solve the problem of recovery and utilization of flue gas desulfurized gypsum FGDG a new method for preparing SO2 gas by adding a mixture of FGDG and pyrite into a boiling furnace and utilizing its high temperature waste heat is proposed Using the FactSage Reaction module and the Equilib module the pyrolysis behavior of FGDG
·Desulfurization gypsum DG is an industrial solid waste obtained by using lime to recover SO 2 gas in flue gas Its chemical reaction process is shown in equation 1 Due to the limited effective treatment methods a large amount of DG dumped has an unavoidable negative impact on environment [13] The main chemical composition of DG is CaSO 4 ·2H 2 O which
·The resulted optimum factor was the mass ratio of red mud / desulfurized gypsum whiskers as 2 1 with silane coupling agent dosage as % at 900 °C and the maximum absorption capacity of Pb II reached 173 −1 at 298 K 2 was analytical reagent grade and used without further purification provided by Sinopharm Chemical Shanghai
Ting an Zhang in Separation and Purification Technology 2022 4 Wet desulfurization technology In China wet flue gas desulfurization technology is a more mature and widely used desulfurization technology The semi hydrate content of desulfurized gypsum is adjusted as a natural plaster substitute for producing gypsum board wallboard [107]
·The evolution of the morphology is determined by the preferential adsorption of the modifier on different surfaces of the α HH gypsum crystals These results and fundamental understanding should provide useful information for improving the synthesis of α HH gypsum using flue gas desulfurized gypsum
·Feng J Jiang S The discussion of desulfurization gypsum and its comprehensive utilization[J] Nonmet Mine 2000;23 6 18 20 MATH Google Scholar Hou K Using flue gas desulfurization gypsum in power plant as cement retard replacing natural gypsum [J] Cement 2005;10 21 3 Google Scholar
·Flue gas desulfurized gypsum FGDG is an industrial by product discharged from thermal power plants smelters and large scale enterprise boilers These results highlight potential applications of TiG and biomass waste derived adsorbents in P purification and recovery Effects of flue gas desulfurization gypsum incorporation and curing
Flue gas desulfurization gypsum FGDG is an industrial by product generated during the flue gas desulfurization process in coal fired power plants ceramics molding and construction often requiring high temperatures processes and further purification Sumner 1993 Lu et al 2016 growth and yield using desulfurized gypsum in the
·The treatment of flue‐gas desulfurization FGD gypsum a common solid waste material that is often affected by chloride ions typically occupies large amounts of land causes resource waste
·Using desulfurized gypsum and steel slag as raw material make desulfurized gypsum steel slag composite gelled material by adding cement triethanolamine aluminium sulfate compound activator
·Like natural gypsum the application of flue gas desulfurization gypsum FGDG with irrigation provides economic and environmental value Wang and Yang 2018; Watts and Dick 2014 FGDG is of low cost because it is a side product of sulfur removal from fuel combustion in coal fired power plants and does not require mining and processing
·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
·Production and resource utilization of flue gas desulfurized gypsum in China A review Environ Pollut Pub Date 2021 07 17 DOI / Sen Liu 1 Wei Liu 1 Fen Jiao 1 Wenqing Qin 1 Congren Yang 1 Affiliations
DOI / Corpus ID 268406079; Removing residual chlorine in water using carbon based material derived from co pyrolysis of cotton stalk and desulfurized ash
·The minimum mercury concentration in desulfurized gypsum is mg/kg and the maximum concentration in desulfurized gypsum is mg/kg The mean mercury concentration of desulfurized gypsum is mg/kg which exceeds that of coal The minimum mercury content in desulfurized wastewater is μ g/L and the maximum is μ g/L
·Jason Gold net aldehyde board is a paper gypsum board product with formaldehyde purification function launched by Jason for the high end home improvement market It uses high purity environmental protection desulfurized gypsum and high strength environmental protection yellow paper as the main raw materials and the product itself does not
·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 Chuanhui Biological Technology Co
·Silage and flue gas desulfurized gypsum as additives improve green waste composting Author links open overlay panel Wan Yang a b Zexin Yin a b Lu Zhang a b Show more Add to Mendeley FGDG is a by product produced from the desulfurization and purification of the flue gas generated by the burning of sulfur containing materials [23]
·Comparative Analysis of Hydration Expansion Performance of Desulfurized gypsum baseda/β Gypsum Jixiu Zhang 1 Ye Zhang 1 Yuanchao Miao 1 and Saihong Duan 1 Gypsum has micro expansion characteristic during the process of hydration and solidification and there are certain differences in the hydration expansion characteristics of
·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 and 24 h were used to replace
