High value-added utilization of desulfurized building …
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 …
A comprehensive review of flue gas desulphurized gypsum: …
The GSLM benchmark mix ratio was determined as follows: 94% of desulfurization building gypsum, 6% of cement, 0.638% each of water reducer and retarder, 0.085% each of HPMC and deer ...
Oman Cement Company – Oman Cement Company
Oman Cement Company has won His Majesty Cup for the best five factories in Sultanate of Oman ten times right from the year of inception i.e., 1991.environment conservation. ... Oman Cement Company Award Best Environmental Initiative which aimed at highlighting the role of companies in serving the environment and creating a sense of shared ...
Coatings | Free Full-Text | Effect of Polyethylene-Grafted …
Semidry desulfurization and wet desulfurization in a furnace are usually used in the circulating fluidized bed boiler in the power production of thermal power plants, and these two approaches lead to high calcium content in the fly ash and bottom slag of circulating fluidized beds and produce abundant flue-gas desulfurized (FGD) gypsum …
Study on desulfurized gypsum used as cement retarder
The influence of the mixture of desulfurized gypsum and natural gypsum on the setting time of cement It can be seen from Figure 5 that the setting time tends to decrease with the increase of the ...
Effect of cellulose ether on hydration heat of desulfurized gypsum
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
High value-added utilization of desulfurized building …
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
Properties and microstructure of soil solidified by titanium …
The Portland cement-fly ash-desulfurized gypsum composite solidifier brings the dredged soil to have higher strength and good resistance to dry-wet cycles [24]. Titanium slag is the residue after the titanium extraction from high titanium-type blast furnace slag. Currently, there are 80 million tons of titanium slag in China, with an annual ...
Superfine Desulfurization Gypsum can Improve the Strength …
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. …
The Key Application Technology of Desulfurized …
The experimental study of the cement-fly ash-desulfurized gypsum mortar system has explored the composition of cement, FA, and FGD through experiments [4]. The cement content is initially set at 10%-20% of the cementitious material, and FA is added. The amount is 10% to 60%, and the FGD is 20% to 70%; ...
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 …
Effects of hybrid fibers on properties of desulfurized gypsum …
PVAF played a better role than BF in crack resistance and toughening, hence contributing more. When the content of PVFA and BF increased to 0.5% and 0.75%, …
Influence of Calcined Flue Gas Desulfurization Gypsum …
of desulfurized gypsum conforms to the concept of green and low-carbon development. Therefore, full research on the comprehensive performance of desulfurized gypsum in ... The chemical composition of P.II.52.5 Portland cement, FGD gypsum, and fly ash (wt/%). Item CaO SiO2 Al2O3 Fe2O3 MgO SO3 TiO2 K2O Portland cement …
High value-added utilization of desulfurized building gypsum …
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 …
High value-added utilization of desulfurized building gypsum …
High value-added utilization of desulfurized building gypsum as self-leveling mortar: the comprehensive effect of cement
Experimental study on the desulfurized gypsum and steel …
With steel slag and desulfurized gypsum as main raw material,mixed appropriate amount slag and compound addition a little of activator,and based on orthogonal test,we explored the slag dosage,the proportion of the combined admixture activator and the desulfurized gypsum dosage impact on the performance of clinker-free cementing material,such as …
Effects of flue gas desulfurization gypsum incorporation and …
The mass ratio of MgO to MgSO 4 ·7H 2 O is 2.61:1, CA was taken as 0.5 % of the mass of MgO. FGDG was used as an external admixture, with 0 %, 15 %, 18 …
Effects of hybrid fibers on properties of desulfurized gypsum …
This paper presents an experimental study and micro-mechanism discussion on gypsum role in the mechanical improvements of cement-based stabilized clay (CBSC).
Synergistic effect of red mud, desulfurized gypsum and fly …
DOI: 10.1016/j.conbuildmat.2023.133302 Corpus ID: 261794915; Synergistic effect of red mud, desulfurized gypsum and fly ash in cementitious materials: Mechanical performances and microstructure
Superfine Desulfurization Gypsum can Improve the Strength of Cement
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 …
Effects of flue gas desulfurization gypsum incorporation and …
The mass ratio of MgO to MgSO 4 ·7H 2 O is 2.61:1, CA was taken as 0.5 % of the mass of MgO. FGDG was used as an external admixture, with 0 %, 15 %, 18 %, 22 %, 25 % and 28 % of the total mass of cementitious material mixed into cement, and the water/solid ratio was taken as 0.4, and the mixing ratio was listed in Table 2.In the …
About | Raw / Natural Gypsum Mining Company Oman
GMC is the first Company in the Sultanate of Oman, which supplies raw gypsum with high purity (above 90 %) to the Cement Companies throughout the Gulf Area, India, Japan, Vietnam, Indonesia & African countries. GMC is the sole dealer to Raysut Cement Company in the Sultanate of Oman since 1999 with the annual contract
Utilizations of preheated flue gas desulfurization gypsum …
The early age ambient temperature hydration of a hybrid cement formulation containing very high volumes of coal fly ash (~80% by dry mass) and activated by Na2SO4 is presented.
Effects of Different Admixtures on the Mechanical and …
mass ratio of composite phase change material to desulfurization gypsum was 1:3. Li et al. [19] modified desulfurized gypsum insulation materials by using hydrogen peroxide as the ing agent, and glass fibers were added to improve their thermal properties. The corresponding results showed that the minimum thermal …
Recent advances in flue gas desulfurization gypsum …
Concrete/cement and asphalt production. Natural gypsum can be used in concrete production as a replacement for calcium ... FGDG plays a major role in soil …
Experimental Study on Desulfurized Gypsum Modified …
The influences of desulfurization gypsum on the properties of both Magnesium oxychloride cement (MOC) pastes and MOC abrasive tools were investigated in this study. By incorporating desulfurization gypsum in the MOC pastes, the compressive strength of MOC paste improved slightly. With 5% gypsum addition, the flexural strength of MOC pastes …
Effects of Fluorogypsum and Flue-Gas …
In order to explore the influence of the types of waste gypsum on the properties of alkali slag cement, fluorogypsum (FG) …
High value-added utilization of desulfurized building gypsum …
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.
Effect of Mineral Admixtures on Physical, Mechanical, and
The production of flue gas desulfurization gypsum poses a serious threat to the environment. Thus, utilizing gypsum-based self-leveling mortar (GSLM) stands out …
Analysis of Strength and Microstructural Characteristics of …
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. …
Utilizations of preheated flue gas desulfurization gypsum …
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. …
Effects of flue gas desulfurization gypsum incorporation and …
DOI: 10.1016/j.conbuildmat.2022.128718 Corpus ID: 251521813; Effects of flue gas desulfurization gypsum incorporation and curing temperatures on magnesium oxysulfate cement @article{Li2022EffectsOF, title={Effects of flue gas desulfurization gypsum incorporation and curing temperatures on magnesium oxysulfate cement}, …