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 was to improve. comprehensive properties of GSL and prepare qualied desulfurized building gypsum-based self-leveling
Flue gas desulfurization gypsum (FGD Gypsum) is an industrial byproduct derived from the desulfurization of flue gas produced by the combustion of sulfur-containing fuels (mainly coal) …
Applying solid waste resources as backfill material can reduce both the cost of backfill and the environmental problems caused by solid waste landfills. In this paper, the synergistic reaction effects of solid waste modified magnesia slag (MMS), coal gasification slag (CGS), and desulfurized gypsum …
As a relatively fast-setting building material, desulfurized gypsum is difficult to use. Citric acid, sodium gluconate, and sodium tripolyphosphate were used to design and prepare a desulfurized gypsum paste containing single or combined retarders. The ef
Request PDF | On Jul 1, 2024, Jianhua Wang and others published The effects of desulfurized gypsum on the mechanical properties of dredged clay with high initial water content stabilized by ...
Gypsum powder is one of the five major gel materials, occupies an important position in the national economy, widely used in construction, building materials, industrial molds and art models, chemical industry and agriculture, food processing and medicine beauty and many other applications, is an important industrial raw materials.
Therefore, the hazards of trace elements in the sludge to the surrounding environment during landfill should be considered. Introduction. The composition, or mixture, of coal is extremely complex. Coal consists basically of all the elements common in nature, including many that are trace [1]. ... and then enriched in the desulfurized gypsum and ...
It will not only destroy the ecological environment, but also do great harm to the human body (Pimentel Lages et al. 2018; Zhang et al. 2019a, b; Mchabe et al. 2021). At …
The rapid expansion of coal-fired power plants has led to a significant increase in the production of flue gas desulfurization (FGD) gypsum, a byproduct of sulfur dioxide emission control processes [1], [2].With annual global output reaching millions of tons, FGD gypsum poses substantial environmental challenges due to its large-scale accumulation and potential …
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 ...
The use of cementitious materials to improve clay is a common technique in engineering. However, the effectiveness of these materials, particularly desulfurized gypsum, on clays with different ...
The "Desulfurized Gypsum Market" reached a valuation of USD xx.x Billion in 2023, with projections to achieve USD xx.x Billion by 2031, demonstrating a compound annual growth rate (CAGR) of xx.x ...
The use of cementitious materials to improve clay is a common technique in engineering. However, the effectiveness of these materials, particularly desulfurized gypsum, on clays with different mineral compositions remains unclear, resulting in a lack of theoretical basis for their application in engineering. This study investigated the synergistic effects of …
The desulfurized gypsum sample was sourced from a coal-fired power plant. Initially, the samples were dried in an oven at 45°C for 24 hours to eliminate external moisture. After drying, the primary chemical composition of the desulfurized gypsum, as displayed in Table 1, consisted predominantly of CaSO 4 ·2H 2 O at
This paper conducts sequential batch extraction experiments on phosphorus gypsum, titanium gypsum and desulfurized gypsum to explore their leaching characteristics and evaluate the hazards of the ...
the "Desulfurized Gypsum Market" will hit USD 47.33 Billion by 2031, with a significant CAGR of 6.73% over the 2024-2031 period, starting at USD 30 Billion in 2023. This growth can be attributed ...
1. Introduction. BPG is an industrial solid waste primarily composed of calcium sulfate. Its main components include desulfurized gypsum (DG), phosphogypsum (PG), and titanium gypsum (TG), with smaller amounts of fluorogypsum, salt gypsum, and others [1,2,3].Figure 1 shows the distribution proportions of BPG sources in China. BPG contains various impurities and harmful …
Geopolymer as a low-carbon binder can effectively reduce carbon emissions and improve industrial waste utilization. To optimize the performance of GGBS-FA binary …
salinized soil, desulfurized gypsum, aeolian sand, soil CO 2 and N 2O emission fluxes, comprehensive greenhouse effect salinized soil, comprehensive greenhouse effect 1 Introduction Climate change is one of the serious challenges facing mankind, and with the increase in global temperature, the issue
Generation of desulfurized gypsum Introduction. The lime-limestone powder is added to water to make a slurry, as an absorbent with a pump into the absorption tower and full contact and mixing with the flue ga. ... crystallize to form a mixture of gypsum dihydrate and calcium sulfite. It is then sent to the gypsum silo for stacking with a conveyor.
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The Role of Cellulose Ether in Controlling Hydration Heat of Desulfurized GypsumCellulose ether is a widely used additive in the construction industry due to its ability to control the hydration heat of desulfurized gypsum. This article aims to explore the effect of cellulose ether on the hydration heat of desulfurized gypsum and its role in
Geopolymer is an emerging green cementitious material that can be used to stabilize dredged clay (DC) as construction materials. This paper presented an experimental study on the effects of desulfurized gypsum (DG) on the mechanical properties (e.g., stress-strain characteristics, unconfined compressive strength (UCS) and water stability) of stabilized DC …
Calcium(II) sulfate dihydrate, Gypsum stone, Hydrated calcium sulfate, Mineral white [Note: Gypsum is the dihydrate form of calcium sulfate; Plaster of Paris is the hemihydrate form.] White or nearly white, odorless, crystalline solid.
Recycling industrial solid waste for mine backfill is one of the best ways to achieve green production in multiple industries. In this paper, the desulfurization gypsum (DG) as an activator is combined with the modified magnesium slag-fly ash cementitious paste backfill (MFPB) technology for the co-disposal of solid waste and goaf treatment, and the influence of …
Phosphogypsum(PG) is one of the typical bulk industrial solid wastes generated in the phosphate chemical industry. Due to its huge production volume and immature resource treatment technology, a large amount of PG can only be stored and disposed in slag yards, and its impact on the ecological environment is becoming increasingly significant during long-term storage.
However, during the past decade, the rate of beneficially used FGDG has gradually decreased, while its production has drastically increased. The presence of …
Industrial byproduct gypsum (BPG) is a secondary product that is mainly composed of calcium sulfate discharged during industrial production. BPG primarily consists of desulfurized gypsum ...
The study investigated the impact of red mud / desulfurized gypsum whiskers mass ratio, coupling agent dosages and calcination temperature on the Pb(II) adsorption by desulfurized gypsum whiskers ...
The desulfurized gypsum from power plant flue gas is the largest resource of industrial by-product gypsum. By adopting advanced processes such as drying and calcination, it is applied in gypsum ...
Gypsum powder is one of the five major gel materials, occupies an important position in the national economy, widely used in construction, building materials, industrial molds and art models, chemical industry and agriculture, food processing and medicine beauty and many other applications, is an important industrial raw materials.
mortar. Desulfurized gypsum is an industrial by-product gypsum obtained after flue gas desulfurization in coal-fired or oil-fired power plants [1]. Its main components and physical and chemical properties are basically the same as natural gypsum, with higher purity and smaller particle size. Since desulfurized gypsum contains water
The 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 ...
New Jersey, United States,- Desulfurized gypsum, also known as FGD gypsum (flue gas desulfurization gypsum), is a byproduct of the flue gas desulfurization process used to remove sulfur dioxide ...