Production and resource utilization of flue gas desulfurized gypsum …
DOI: 10.1016/j.envpol.2021.117799 Corpus ID: 236531280; Production and resource utilization of flue gas desulfurized gypsum in China - A review. @article{Liu2021ProductionAR, title={Production and resource utilization of flue gas desulfurized gypsum in China - A review.}, author={Sen Liu and Wei Liu and Fen Jiao …
Heavy metal pollution risk of desulfurized steel slag as a soil
Therefore, it could be expected that DS could be used as the amendment of saline-sodic soil. As a soil amendment, the use of desulfurized gypsum has been widely studied (Chen et al., 2001; Clark et al., 2001; Cui et al., 2021; Koralegedara et al., 2019; Zhao et al., 2019). It could alleviate the harms of high alkalinity and excessive salinity ...
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 …
Reclamation of saline-sodic soil properties and improvement …
The desulfurized gypsum not only has a high content of gypsum (> 900 g kg − 1) but also has a low price < 50¥ t − 1. We therefore conducted a study to determine how effective desulfurized gypsum is at reducing sodicity, improving the physical and chemical properties of the soil, and improving the growth and yield of rice in these saline ...
Solidification and Release Characteristics of Heavy Metals in Gypsum …
Heavy metals in flue gas desulfurization (FGD) gypsum from coal-fired power plants are at risk of releaching during the processes of stockpiling and resource utilization. In this study, the effects of organosulfur chelators dithiocarbamate (DTC) and trisodium trithiocyanate-15 (TMT-15) on the solidification characteristics of heavy metals …
(PDF) The Key Application Technology of Desulfurized Gypsum …
The results show that adding desulfurized gypsum, which accounts for 6% to 8% of the total mass of the cementitious material, has no adverse effect on the workability and can significantly improve ...
Gas Desulfurization Gypsum-Based Polymer Materials
the limestone gypsum flue gas desulfurization process, 2.7 ton of desulfurized gypsum can be generated for each 1 ton of SO2 removed [3]. A 300 MW coal-fired thermal power unit discharges about 30,000 ton of desulfurized gypsum every year (assuming 1.0% sulfur in coal) [4]. A substantial amount of desulfurized gypsum …
Application of flue gas desulfurization gypsum improves multiple
FGDG: flue gas desulfurization gypsum. Numbers denote response ratios which are converted to percentage changes (%) and are marked with stars (*) to indicate whether the responses are statistically significant. Lines and arrows denote the main impacts of FGDG application on soil properties, crop yields, plant seedling emergence, …
Summary of research progress on industrial flue gas desulfurization
The semi-hydrate content of desulfurized gypsum is adjusted as a natural plaster substitute for producing gypsum board, wallboard [107]. The modified treatment of desulfurized gypsum with cement, inorganic waste, straw fiber and other wastes can be used to manufacture high-insulation and compression-resistant wall materials [108] .
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;
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Salalah International Gypsum Co. L.L.C., or SIG in short, is the leading natural gypsum producer & exporter from Sultanate of Oman. We are located at Salalah in the Dhofar governorate, which is the southernmost part of Oman. Our gypsum mines are located at Thumrait, around 80 km from Salalah city. SIG's gate way to the world is the Port of ...
A Study on the Mechanical Properties and Hydration Process …
Paste backfill prepared with ultrafine tailings often faces difficulties in meeting engineering requirements. To address the challenge of using ultrafine tailings, this work utilized a slag cemented ultrafine tailings paste backfill (SCUPB) composed of slag, Portland cement, and desulfurized gypsum as the cementitious materials, with a …
Synergistic effect of red mud, desulfurized gypsum and fly …
The RM was pretreated using our previous method [15], and the FA was not pretreated and the DG was dried at 105℃.After that, the RM, DG and FA were used to supplementary cementitious materials to replace cement in equal amounts, and the mortar test blocks of RM-cement, RM-FA-cement and RM-FA-DG-cement were prepared …
Reclamation of saline-sodic soil properties and improvement of rice
Desulfurized gypsum, a by-product of thermal power plants for removal of sulfur from coal, may be used as an external source of Ca2 + for reclamation of saline-sodic soil in this plain because it ...
Coatings | Free Full-Text | Study on the Micro Mechanism of …
To investigate the macroscopic mechanical properties and failure evolution mechanism of desulfurization gypsum–fly ash fluid lightweight soil, a microscale numerical model using PFC2D (Particle Flow Code) was constructed. Uniaxial compression tests were conducted to determine the microscopic parameters of the model, extracting information …
Flue Gas Desulfurization Gypsum: Implication for Runoff and …
Gypsum was effective in reducing concentration and load in one of the two study years: P and NH 4 –N in 2009 (up to 83%) and NO 3 –N in 2011 (up to 73%). A …
Recent advances in flue gas desulfurization gypsum …
The main purpose of the use of FGDG as a fertilizer is to provide Ca and S for plant growth. ... Synthetic dyes, used in several industries, are prevalent water …
Synergistic effect of red mud, desulfurized gypsum and fly …
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. ... byproduct gypsum is a general term for byproducts discharged from industrial production with calcium sulfate as the main …
Heavy metal pollution risk of desulfurized steel slag as a soil
The by-product of wet flue gas desulfurization, desulfurized steel slag (DS), had chemical characteristics like natural gypsum that can be used to improve saline-sodic soil.
What are the main problems in the use of desulfurized gypsum
Aug 13, 2020 Main uses of power plant desulfurization gypsum The difference between desulfurized gypsum powder and general gypsum powder is the difference in physical composition The desulfurized gypsum powder also contains silica, sodium oxide, calcium carbonate, calcium sulfite, limestone, calcium chloride, magnesium chloride, etc …
About us
SIG is the leading natural gypsum producer & exporter from Sultanate of Oman. We are located at Salalah in the Dhofar governorate, which is the southernmost part of Oman. Our gypsum mines are located at Thumrait, around 80 km from Salalah city. SIG's gate way to the world is the Port of Salalah.
Gypsum in Oman
At the same year, Gypsum was the 30th most exported product in Oman. The main destination of Gypsum exports from Oman are: India ($81.1M), Bangladesh ($17.5M), Japan ($16.5M), Vietnam ($16.2M), and Indonesia ($15M). The fastest growing export markets for Gypsum of Oman between 2021 and 2022 were India ($25.7M), Nepal …
Global Gypsum Supply Top 10
Jonoub Gypsum's Lamerd mine in Fars boasts 70Mt of gypsum reserves.Meanwhile, Samim Derakhshan controls 60Mt of gypsum reserves in neighbouring Hormozgan Province, where it aims to establish a 1Mt/yr mine. The Iranian gypsum wallboard industry is a relatively minor customer for producers' gypsum, of …
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. ...
A comprehensive review of flue gas desulphurized gypsum: …
5. FGD gypsum can be partially substituted for cement to produce high-strength building materials, reducing the carbon footprint and building materials cost, thus contributing towards the circular economy. 6.The low bulk density of FGD gypsum enables its use in lightweight building materials with a higher degree of insulation for wall …
Crystals | Free Full-Text | Use of Flue Gas Desulfurization Gypsum …
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 of …
A comprehensive review of flue gas desulphurized gypsum: …
5. FGD gypsum can be partially substituted for cement to produce high-strength building materials, reducing the carbon footprint and building materials cost, …
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 …
Production and resource utilization of flue gas desulfurized gypsum …
The 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 …
Effects of Fluorogypsum and Flue-Gas Desulfurization …
In 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) …