The effect of increasing MgO content in dendromass on ash fusibility and corrosion of corundum refractory castable

Plešingerová, Beatrice; Vadász, Pavol; Medved, D. B.; Sučik, Gabriel; Macháček, Jan; Popovič, Ľuboš; Ivánová, Dana; Bakajsová, Radka

doi:10.1016/j.ceramint.2022.04.155

Cited by 5 publications

(4 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The values of the slagging and fouling indices of ash are determined by their chemical composition. It follows that reducing the reactivity and the stickiness of ash particles can be achieved by changing the chemical composition of the ash, e.g., by adding minor amounts of inhibitors to the fuel [26]. The effect of increasing MgO, CaO, and Al 2 O 3 content in bio-ashes on the change in the values of some indices determining the inclination to ash slagging and fouling has been verified.…”

Section: Discussionmentioning

confidence: 87%

“…The combustion of biomass, specifically wood chips, may be accompanied by a relatively high degree of unburned carbon (up to about 20%) [26]. One way to increase efficiency is to intensify the combustion process by enriching the air with oxygen [27].…”

Section: Introductionmentioning

confidence: 99%

“…The increase in temperature will affect the intensity of physico-chemical reactions, interactions of ash particles, the movement of flue gas, and the corrosion of refractory lining and metal parts of boilers. A possible way to prevent bio-ash slagging and agglomeration is to use additives that are added to the fuel to raise the melting point of the bio-ash [4,[25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Study of Dendromass Ashes Fusibility with the Addition of Magnesite, Limestone and Alumina

et al. 2023

Self Cite

View full text Add to dashboard Cite

The fusibility of ash from woodchip combustion is characterised in the present work. The impact of the increase in MgO, CaO, and Al2O3 content in the bio-ash on the classification of ash into categories according to slagging and fouling indices was evaluated. The ash was characterized based on the chemical composition using slagging and fouling indices. However, these ash composition changes did not assign the ash into categories of the indices FU, SR, RS, and B/A (fouling, slagging, slag viscosity, basicity), with less ash inclination to slagging and fouling. The indices were primarily derived for ashes from coal combustion. The indices values characterizing the ash were compared with measured results of ash melting according to STN ISO 540. The measured ash fusibility values showed that the addition of magnesite, limestone, and alumina to dendro-ashes increases the DT (temperature of deformation), HT (temperature of hemisphere), and the AFI (ash fusibility index). There is no conformity between the values of the indices and the measurement of ash fusibility temperatures. In terms of temperatures in the combustion chamber, the measured sintering (Tsin) and DT are suitable for evaluating the tendency of ash to slagging and fouling as well as an accretion of ash particles sticking to the lining.

show abstract

Section: Discussionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study of Dendromass Ashes Fusibility with the Addition of Magnesite, Limestone and Alumina

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

“…A corrosive material is placed in the hole and at a temperature above 1450°C in an electric furnace; the corrosive material is allowed to react with the walls of the analysed lining for several hours. [10,11] dealt with the effect of corrosion of the masonry due to biomass slag in their works. Within the electric furnace, it is possible to place several analysed samples at the same time; therefore this evaluation method is used most often.…”

Section: Methods Of Testing Corrosion Of Liningsmentioning

confidence: 99%

Methods for Determining Thermal-mechanical Wear of Refractory Materials

Dzurňák¹,

Jablonsky²,

Varga³

et al. 2022

ATPET

View full text Add to dashboard Cite

The presented article deals with methods of testing refractory materials that are currently most often used for testing low-temperature corrosion caused by biomass ash. The article deals with the effect of the chemical composition of biomass on melting temperatures and what standards are used to evaluate these processes. The article also discusses the methods of testing the abrasion of the surfaces of refractory materials. The article points out that at the same time the testing methods are not sufficient for evaluation and that the testing conditions do not reflect the operating parameters achieved in real devices.

show abstract

Analysis of corrosion of corundum refractory castables in relation to increased MgO content in dendromass ashes

Plešingerová

Medved

Vadász

et al. 2023

Ceramics International

View full text Add to dashboard Cite

The effect of increasing MgO content in dendromass on ash fusibility and corrosion of corundum refractory castable

Cited by 5 publications

References 21 publications

Study of Dendromass Ashes Fusibility with the Addition of Magnesite, Limestone and Alumina

Study of Dendromass Ashes Fusibility with the Addition of Magnesite, Limestone and Alumina

Methods for Determining Thermal-mechanical Wear of Refractory Materials

Analysis of corrosion of corundum refractory castables in relation to increased MgO content in dendromass ashes

Contact Info

Product

Resources

About