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slag coal rheology

Flow properties and rheology of slag from coal

Jul 01, 2010 Slag samples have been analyzed by X-ray fluorescence, X-ray diffraction, and scanning electron microscopy. The rheological behavior of the slag has been investigated experimentally using a high-temperature rheometer at temperatures between 1200 °C and 1340 °C.

Rheological Investigation of Coal Ash :: Anton-Paar

Rheological Investigation of Coal Ash Coal ash is a by-product of coal combustion in thermal power plants. This material not only settles as sediment to the bottom of the boiler and is blown out with the flue gas; but it also settles on the reactor walls, creating coal ash slag.

Flow properties and rheology of slag from coal

The high-temperature rheology of bituminous coal slag in the reducing atmosphere was investigated in this study. The characteristics of slag sample were analyzed by multi-techniques. The

Measurement of the Viscosity of Coal-Derived Slag Using

Flow properties and rheology of slag from coal gasification. Fuel 2010, 89 (7), 1709-1715. https://doi/10.1016/j.fuel.2009.07.013 Wenjia Song, Lihua Tang, Xuedong Zhu, Yongqiang Wu, Yongqiao Rong, Zibin Zhu, Shuntarou Koyama. Fusibility and flow properties of coal ash and slag.

Rheological evolution and crystallization response of

The evolution of the time dependence of rheological behaviors, including the viscosity and yield stress of the molten coal ash slag containing 0–35.51 vol % crystals at decreasing temperatures (1400–1280°C) and within 1.05 × 10 5 s, were investigated.

RHEOLOGICAL ANALYSIS OF BLAST FURNACE SLAG BEARING

result of elements entering slag from the outside (e.g. coal dust, carbides, nitrides insoluble in slag). of the dynamic viscosity coefficient as a rheological property of the liquid or solid-liquid multi-component slag systems. Rheology is a study of the material deformation and its transition to plastic state. Rheology focuses on such

Analysis of solid phase formation and its impact on slag

Sep 01, 2017 Another aspect of slag rheology is the sharp increase in viscosity of some slags below their temperature of critical viscosity (Tcv). A multitude of definitions has been developed in order to determine Tcv.

Viscosity and Structural State of Iron in Coal Ash Slags

This article is cited by 30 publications. Tao Xu, Sankar Bhattacharya. Mineral Transformation and Morphological Change during Pyrolysis and Gasification of Victorian Brown Coals in

Viscosity of slags with solids: The effect of solids

Jul 16, 2019 The viscosity of slags containing crystallized solids is always of great interest for materials scientists working in high-temperature slag processing, as it strongly affects slag

Rheological evolution and crystallization response of

The evolution of the time dependence of rheological behaviors, including the viscosity and yield stress of the molten coal ash slag containing 0–35.51 vol % crystals at decreasing temperatures (1400–1280°C) and within 1.05 × 10 5 s, were investigated. Non‐Newtonian behaviors, including shear thinning, become obvious with an increasing

RHEOLOGICAL ANALYSIS OF BLAST FURNACE SLAG BEARING

result of elements entering slag from the outside (e.g. coal dust, carbides, nitrides insoluble in slag). of the dynamic viscosity coefficient as a rheological property of the liquid or solid-liquid multi-component slag systems. Rheology is a study of the material deformation and its transition to plastic state. Rheology focuses on such

Viscosity and Phase Transformation in Coal Ash Slags near

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Measurement and Significance of the Flow Properties of

Effect of crystal formation in liquid slag, 43 Effect of temperature, 45 For typical coal-ash slags, fig. 24 Typical curve for thixotropic plastic, fig. 21 Poise, definition, 5 Rotating-bob viscometer method, 35 Rheology of coal-ash slag, 39 Silica In slag, 23, 53, figs. 27, 28, table 4 Ratio to alumina, figs. 27, 28 Silicon compounds in ash, 5

High Temperature Rheological Characteristics of Iron and

0.95 kg/kWh, 0.87 kg/kWh and 0.6 kg/kWh for coal, oil and natural gas-based power generation, respectively. Despite the differences on how iron, steel and electricity are pro- Rheology, Iron and steel making slag, High temperature, Gas emission, Waste heat recovery Check for

Rheology of Alkali-Activated Mortars: Influence of Particle

AAS and AAFA mortars rheology has been investigated comparing the findings with the results for OPC mortars. 2. Experimental 2.1. Materials The alkali-activated mortars studied were AAS, with blast furnace slag (BFS) as the precursor, and AAFA, prepared with coal fly ash (FA), whilst OPC mortars were used as the reference. Table1

A critical review of ash slagging mechanisms and viscosity

Apr 26, 2020 Song W, Tang L, Zhu X, Wu Y, Zhu Z, Koyama S. Flow properties and rheology of slag from coal gasification. Fuel, 2010, 89(7): 1709–1715. Article Google Scholar 140. Seok S H, Jung S M, Lee Y S, Min D J. Viscosity of highly basic slags. ISIJ International, 2007,

Slag Behavior in Gasifiers. Part I: Influence of Coal

This study briefly introduces coal properties and operating conditions used in major commercial entrained-flow gasifiers in IGCC plants; identifies and discusses the key coal quality and operating conditions impacting slag flow behavior; summarizes the coal quality criteria and operating conditions for use in entrained-flow gasifiers.

Experimental Investigation and Modeling of the Viscosity

Nov 10, 2017 Song W, Tang L, Zhu X, Wu Y, Zhu Z, Koyama S (2010) Flow properties and rheology of slag from coal gasification. Fuel 89:1709–1715. CAS Article Google Scholar 22. Oh MS, Brooker DD, de Paz EF, Brady JJ, Decker TR (1995) Effect of crystalline phase formation on coal slag viscosity. Fuel Process Technol 44:191–199

[PDF] Physical and computational studies of slag behavior

This work details an investigation of how to modify slag flow so as to maintain a clear line of sight across the reaction section of an entrained-flow coal gasifier. Physical and computational models were developed to study methods of diverting the molten slag that flows vertically down the walls of the reactor. The physical models employed silicone oil of varying viscosity.

VIS 413 High Temperature Viscometer TA Instruments

Coal Ash / Slag. In coal-fired power plants, coal gasification plants, and waste incineration plants ash and slag must be removed from the boiler. As feedstock is continuously supplied the slag must be continuously removed from the process. The best way to achieve this is to let the molten slag flow into a quenching bath from which it can be

Minerals Free Full-Text Rheology of Alkali-Activated

The effect of two precursors (slag and fly ash), different particle size distribution, and three types of aggregate (siliceous sand, limestone, and recycled concrete) on alkali-activated material (AAM) mortar rheology were studied and compared to their effect on an ordinary Portland Cement (OPC) mortar reference. Stress growth and flow curve tests were conducted to determine plastic viscosity

Slag Cement Association

Slag cement is a recovered byproduct of the iron manufacturing process and can be used to replace a portion of portland cement in concrete mix design. The use of slag cement has demonstrated long-term performance enhancements allowing designers to reduce the environmental footprint of concrete while ensuring improved performance and increased

(PDF) Review of availability of source materials for

Fly ash and blast furnace slag (slag cement) are byproducts of coal combustion and iron production, respectively. Metakaolin, on the other hand, is a manufactured material. Puertas et al. (2017) investigated the effect of mixing time on rheology and compressive strength of alkali-activated slag concrete in comparison with OPC concrete. The

RHEOLOGICAL ANALYSIS OF BLAST FURNACE SLAG BEARING

result of elements entering slag from the outside (e.g. coal dust, carbides, nitrides insoluble in slag). of the dynamic viscosity coefficient as a rheological property of the liquid or solid-liquid multi-component slag systems. Rheology is a study of the material deformation and its transition to plastic state. Rheology focuses on such

High Temperature Rheological Characteristics of Iron and

0.95 kg/kWh, 0.87 kg/kWh and 0.6 kg/kWh for coal, oil and natural gas-based power generation, respectively. Despite the differences on how iron, steel and electricity are pro- Rheology, Iron and steel making slag, High temperature, Gas emission, Waste heat recovery Check for

A critical review of ash slagging mechanisms and viscosity

Apr 26, 2020 Song W, Tang L, Zhu X, Wu Y, Zhu Z, Koyama S. Flow properties and rheology of slag from coal gasification. Fuel, 2010, 89(7): 1709–1715. Article Google Scholar 140. Seok S H, Jung S M, Lee Y S, Min D J. Viscosity of highly basic slags. ISIJ International, 2007,

High Temperature Rheological Characteristics of Iron and

Nov 16, 2020 Song W, Tang L, Zhu X, et al. (2010) Flow properties and rheology of slag from coal gasification. Fuel 89: 1709-1715. Jiang T, Liao D, Zhou M, et al. (2015) Rheological behavior and constitutive equations of heterogeneous titanium-bearing molten slag. International Journal of Minerals, Metallurgy, and Materials 22: 804-810.

Slag Behavior in Gasifiers. Part I: Influence of Coal

This study briefly introduces coal properties and operating conditions used in major commercial entrained-flow gasifiers in IGCC plants; identifies and discusses the key coal quality and operating conditions impacting slag flow behavior; summarizes the coal quality criteria and operating conditions for use in entrained-flow gasifiers.

Influence of High-Temperature Liquid on Phase Composition

Mar 16, 2020 1. Introduction. Coal gasification slag is an inevitable byproduct from entrained-flow coal gasification [], which is comprised of coal ash, fluxing agent and residual carbon.According to the literature, the studies on coal gasification slag mainly focused on three aspects: (1) general characterization of the slags, such as composition, morphology, particle size distribution and thermal

Experimental Investigation and Modeling of the Viscosity

Nov 10, 2017 Song W, Tang L, Zhu X, Wu Y, Zhu Z, Koyama S (2010) Flow properties and rheology of slag from coal gasification. Fuel 89:1709–1715. CAS Article Google Scholar 22. Oh MS, Brooker DD, de Paz EF, Brady JJ, Decker TR (1995) Effect of crystalline phase formation on coal slag viscosity. Fuel Process Technol 44:191–199

(PDF) Review of availability of source materials for

Fly ash and blast furnace slag (slag cement) are byproducts of coal combustion and iron production, respectively. Metakaolin, on the other hand, is a manufactured material. Puertas et al. (2017) investigated the effect of mixing time on rheology and compressive strength of alkali-activated slag concrete in comparison with OPC concrete. The

HIGH TEMPERATURE VISCOMETER

Coal Ash / Slag In coal-fired power plants, coal gasification plants, and waste incineration plants, ash and slag must be removed from the boiler. As feedstock is continuously supplied the TA Instruments is the market leader in thermal analysis and rheology with a broad portfolio of complementary measurement technologies. Some of the

VIS 413 High Temperature Viscometer TA Instruments

Coal Ash / Slag. In coal-fired power plants, coal gasification plants, and waste incineration plants ash and slag must be removed from the boiler. As feedstock is continuously supplied the slag must be continuously removed from the process. The best way to achieve this is to let the molten slag

Upcycled “CO 2-negative” concrete for construction

Jun 09, 2017 rheology and workability of fresh upcycled concrete formulations (i.e ., “mixing ratios” between the fly ash-portlandite-slag particulate blends, additional fine aggregates, water and chemical admixtures (as needed )). • Develop and identify and optimal shape stabilization process for fabrication of prismatic upcycled concrete geometries

Coal slag universal fluid Shell Oil Company

A rheology control agent in the context of a drilling fluid keeps solids from settling out and may be viewed as a viscosifier. The preferred viscosifier for the universal drilling fluid include biopolymers and clays. The silicates also function as viscosifiers as well as borehole stabilizers. Coal slag

Listiani Artha Jr. Project Engineer PT.Pertamina

Researching about coal and petroleum coke slag rheology. Participated in training (2015- KIMS’ thermodynamic software training, Factsage), seminars (2015 Green

Electrical resistivity of coal-bearing rocks under high

The above publications attribute the success of these electrical/electromagnetic geophysical techniques to the changes in resistivity with thermal history of coal, that is, the large decrease of resistivity in the burning centre lies in the pyrolysis of coal at high temperature, which in turn leads to the higher carbon content of coal char