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].
Semantic Scholar extracted view of "Synergistic effect of red mud, desulfurized gypsum and fly ash in cementitious materials: Mechanical performances and microstructure" by Yaguang Wang et al. ... Red mud, a by-product of alumina production, has a great impact on the environment due to its high alkalinity. In this paper, ...
1. 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.SO 2 is a highly irritating gas. Because SO 2 is freely soluble in water and enters the respiratory tract, it can generate …
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 …
Tens of millions of tons of desulfurized gypsum can be produced in China every year. Desulfurization gypsum is used as an admixture to replace part of cement in concrete. And the smaller the particle size of desulfurized gypsum, the better the mechanical properties of cement mortar. The compressive and flexural tests show that the cement mortar with …
DOI: 10.1016/J.CEJ.2017.06.180 Corpus ID: 103613075; Utilization of semi-dry sintering flue gas desulfurized ash for SO2 generation during sulfuric acid production using boiling furnace
China Desulfurized Gypsum wholesale - Select 2024 high quality Desulfurized Gypsum products in best price from certified Chinese Gypsum Powder manufacturers, China Gypsum suppliers, wholesalers and factory on Made-in-China ... Desulfurized Gypsum Powder Production Line with Adcanced Technology US$ 130000-655000 / …
gypsum was divided into deta il, and its comprehensive utili-zation status was analyzed.14) Secondly, some progress has been made in the research of desulfurized gypsum as a waterproofing agent, and a new type of building gypsum-based waterproofing agent has been prepared.15) In addi-tion, a new type of high-efficiency inorganic composite
@article{Li2020PreparationCA, title={Preparation, characterization and application of red mud, fly ash and desulfurized gypsum based eco-friendly road base materials}, author={Yong Li and Xiaoming Liu and Ze Peng Li and Yongyu Ren and Yaguang Wang and Wei Zhang}, journal={Journal of Cleaner Production}, year={2020}, …
Abstract. 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 gypsum (FGDG) annually, which …
Flue gas desulfurized gypsum (FGDG) is a waste material produced in the power stations during the flue gas desulfurization process. In China, a small amount of FGDG is used as cement additives or for gypsum boards, but there still exist a mass of FGDG due to the lack of reusing methods. Also, the waste fly ash (WFA) is another …
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 …
DOI: 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
Background Gypsum is a valuable resource for farmers, supplying essential calcium and sulfur for plant growth. It serves as a crucial soil amendment, particularly in …
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 …
The utilization of solid wastes (SWs) as a potential resource for backfilling is not only conducive to environmental protection but also reduces the surface storage of waste. Two types of SWs, including fly ash (FA) and desulfurized gypsum (DG), were used to prepare cementitious backfilling materials for underground mined-out areas. …
Red mud (RM), fly ash (FA) and desulfurized gypsum (DG) are harmful solid wastes that need to be treated. In this study, RM, FA, DG were used as the main raw materials to prepare road base materials based on the different (CaO + Na 2 O)/(SiO 2 +Al 2 O 3) molar ratio, and its mechanical properties, durability, microstructure and …
Flue gas desulfurized gypsum (FGDG) is an industrial by-product discharged from thermal power plants, smelters, and large-scale enterprise boilers. It is produced when sulfur is removed from flues gases in the flue gas desulfurization (FDG) system, and the formation processes are shown by the following equations (Liu et al., …
Most of the mercury in the fly ash and desulfurization gypsum produced from coal-fired plants exists in unburned carbon in the form of sulfur-, chlorine-, and ... Production and resource utilization of flue gas desulfurized gypsum in China - A review. Environ Pollut, 288 (2021), Article 117799, 10.1016/j.envpol.2021.117799. View PDF …
Liu, S., Liu, W., Jiao, F., Qin, W., & Yang, C. (2021). Production and resource utilization of flue gas desulfurized gypsum in China - A review.
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 …
Flue gas desulfurization gypsum (FGDG) is a type of industrial auxiliary gypsum obtained by desulfurization and purification of flue gas generated after the combustion of sulfur-containing fuel (e.g., …
The synergistic effect of red mud – desulfurized gypsum - fly ash was found. ... In 2020, China's cement production will be about 2.37 billion tons, and its CO 2 emissions will be about 1.466 billion tons, accounting for about 14.30% of the total CO 2 emissions [10], [11]. Therefore, the use of solid waste to prepare cementitious materials …
Given the great environmental pressure brought by the massive stacking of solid waste, red mud and desulfurized gypsum were used to prepare cementitious materials. In this paper, three different material ratios with a 60% content at different curing ages (7 d, 14 d, and 28 d) were utilized to prepare the composite soil. To explore the …
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, …
The desulfurized gypsum produced by Baotou Huaneng Power Plant is selected. The cement clinker produced by Inner Mongolia Jidong Cement Plant is selected. The hydrogen peroxide produced by three factories of Tianjin Huadong reagent was selected for analysis. See Table 1 for composition of main
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 …
This research aims to study the utilization of waste from power plants, construction and demolition, and agriculture by varying the ratios of flue-gas desulfurization (FGD) gypsum, construction and demolition waste (CDW), and oil palm trunks (OPT) in concrete production. This research used these as the raw materials for the production …
Desulfurized gypsum is incorporated into the slag or mixed with a grinding blast furnace slag (GGBs), and electric arc furnace reduction slag (EAFRS) is mixed to manufacture …
Abstract: To resolve problems caused by the accumulation of flue gas desulfurization gypsum (FGDG) in the environment, a polymer material was prepared …
The production of flue gas desulfurization gypsum poses a serious threat to the environment. Thus, utilizing gypsum-based self-leveling mortar (GSLM) stands …
Flue gas desulfurized gypsum mainly comes from thermal power plants, smelters, and large-enterprise boilers, and contains industrial by-products produced …
The utilization rate of gypsum in sintering was calculated, and the results showed that gypsum decomposition was the limiting factor in the reaction mechanism of calcium ferrite synthesis, the optimal raw material ratio for the formation of calcium ferrite was 30.4% desulfurization gypsum produced in sintering, 31.7% iron ore, 11.1% blast ...
According to the China Electricity Council (Pan et al., 2015), the production of FGD-gypsum has been increased sharply since 2005, as shown in Fig. 2. And it can be expected that more and more FGD gypsum will be produced in the future for stricter and stricter regulation on the SO 2 emission limit. Download: Download high-res image (156KB)
Li et al. (2017) used desulfurized gypsum as a raw material to investigate the effects of reaction time, temperature, crystal type control agent, sulfuric acid ... and new CSWs with super-large aspect ratios were produced. When the temperature was raised to 130 °C and 140 °C, the products initially exhibited crystals with a large aspect ratio
Desulfurization gypsum is an industrial by-product produced during the process of wet flue gas desulfurization using limestone–gypsum in coal-fired power …
Desulfurized gypsum (DG), an industrial by-product primarily composed of calcium sulfate (CaSO4) with a global annual production of 280 million tons, can react with leached alumina in an alkaline environment to produce needle-like ettringite [28], [33]. Ettringite exhibits significant volume expansion and can densify microstructure.
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 …
DOI: 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 …
The 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), …