— 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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— Moreover the indexes were elevated to a higher level in FGD gypsum prepared CSW test The morphology of the two CSWs before surface modification can be found in Fig 11 showing a finer size and larger specific surface area of the FGD gypsum prepared CSW which was considered to be beneficial for its property Moreover after a
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— Introduction In the industrial production of China the processing of phosphate rock volcanic eruptions kerosene combustion and aluminum smelting will lead to flue gas emissions containing a large amount of SO 2 is a highly irritating gas Because SO 2 is freely soluble in water and enters the respiratory tract it can generate
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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 uses calcium silicate absorbent
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— An industrially feasible process was proposed to produce α calcium sulfate hemihydrate α HH from FGD gypsum without any additives In this process an AlCl3 solution was used to promote the conversion of calcium sulfate dihydrate DH to hexagonal prismatic α HH with high strength at atmospheric pressure The phase transition kinetics
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— Post combustion flue gas desulfurization and denitrification technologies are essential in achieving the full compliance of fine particulate matter aerodynamic diameter less than μm air quality standards by 2030 in China as sulfur dioxide SO2 and nitrogen oxides NOX are the main precursors of Some studies have
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— Desulfurization gypsum is a kind of solid waste with CaSO 4 ‧2H 2 O as the main component produced in the process of limestone based flue gas desulfurization About 100 million tons of desulfurization gypsum was produced every year in China Wang et al 2020 On the one hand it has a high content of Ca 2 and is suitable for CO 2
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ash and slag powder especially mortars mixed with large amounts of fly ash and slag powder have obvious early mechanical properties Reduction seriously restricts the large scale application of fly ash and slag powder in mortar Desulfurized gypsum is an industrial by product gypsum obtained after flue gas desulfurization in coal
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Content from these authors the physicochemical amelioration effects in the salt affected soil with desulfurization gypsum cement fine powder CFP and waste concrete WC were reported Sodic soil in Yinchuan China was used in amelioration test Waste cement fine powders CFP ≦200 µm waste concrete particles WCP ≦ mm 1
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— The purpose of this study is to prepare water resistant block from flue gas desulfurization gypsum [FGD] A water resistant agent prepared from granulated blast furnace slag GBFS high calcium
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— Desulfurization gypsum based composite cementitious materials were prepared by adding certain proportions of sulfoaluminate cement mineral powder quick lime retarder and water reducer into the
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— Carbide slag is a wet powder sample from Zhenyuan ASUS Precious Metals Development Co Ltd The calcium carbide slag was dried ground passed through a 200 mesh sieve and placed in a three necked flask and a certain amount of water was added at the set solid to liquid ratio to carry out a desulfurization experiment at room
— Flue gas desulfurization gypsum FGDG is an industrial by product generated during the flue gas desulfurization process in coal fired power plants According to Leiva et al 2010 gypsum panels of 100% FGDG passed the European standards for physiochemical density moisture content water adsorption capacity resistance to
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