The Study of Slurry Erosion Wear Behaviour of Coal Bottom Ash Slurry Handling Pipeline

2019 ◽  
pp. 697-710 ◽  
Author(s):  
Satish R. More ◽  
Sudeep P. Ingole ◽  
Dhananjay V. Bhatt ◽  
Jyoti V. Menghani
Keyword(s):  
Bottom Ash ◽  
Wear Behaviour ◽  
Erosion Wear ◽  
Slurry Erosion ◽  
Coal Bottom Ash

scholarly journals Computational analysis of solid particle-erosion produced by bottom ash slurry in 90° elbow

2019 ◽  
Vol 252 ◽  
pp. 04008
Author(s):  
Jashanpreet Singh ◽  
Jatinder Pal Singh ◽  
Mandeep Singh ◽  
Miroslaw Szala
Keyword(s):  
Bottom Ash ◽  
Outer Wall ◽  
Wall Region ◽  
Erosion Wear ◽  
Slurry Erosion ◽  
Low Velocity ◽  
Drag Forces ◽  
Shape Pattern ◽  
Discrete Phase ◽  
Computational Fluid Dynamics Cfd

Present work is devoted to investigation of the slurry erosion wear in a 90° elbow by using commercial Computational fluid dynamics (CFD) code FLUENT. Discrete phase erosion wear model was used to predict erosion in 90° elbow by solving the governing equations through Euler-Lagrange scheme. Particle tracking was considered by using standard k-ε turbulence scheme for the flow of bottom ash slurry. Erosion wear in elbow was investigated along with velocity distribution and turbulence intensity. The radius-to-diameter (r/D) ratio was taken as 1.5. Results show that erosion rate increases with increase in velocity. Present numerical simulation model holds close agreement with previous studies. Distorted patterns appeared at low velocities. The V-shape pattern appeared on the outer wall of elbow at high velocities. The low velocity region occurs around circumference of elbow wall at outer wall of elbow due to stimulation of the drag forces near the wall region.

scholarly journals Reactivity of Ground Coal Bottom Ash to Be Used in Portland Cement

J ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 223-232
Author(s):  
Esperanza Menéndez ◽  
Cristina Argiz ◽  
Miguel Ángel Sanjuán
Keyword(s):  
Fly Ash ◽  
Coal Fly Ash ◽  
Bottom Ash ◽  
Blended Cement ◽  
Coal Ash ◽  
Pozzolanic Reaction ◽  
Natural Sand ◽  
Coal Bottom Ash ◽  
Novel Material ◽  
Pozzolanic Properties

Ground coal bottom ash is considered a novel material when used in common cement production as a blended cement. This new application must be evaluated by means of the study of its pozzolanic properties. Coal bottom ash, in some countries, is being used as a replacement for natural sand, but in some others, it is disposed of in a landfill, leading thus to environmental problems. The pozzolanic properties of ground coal bottom ash and coal fly ash cements were investigated in order to assess their pozzolanic performance. Proportions of coal fly ash and ground coal bottom ash in the mixes were 100:0, 90:10, 80:20, 50:50, 0:100. Next, multicomponent cements were formulated using 10%, 25% or 35% of ashes. In general, the pozzolanic performance of the ground coal bottom ash is quite similar to that of the coal fly ash. As expected, the pozzolanic reaction of both of them proceeds slowly at early ages, but the reaction rate increases over time. Ground coal bottom ash is a promising novel material with pozzolanic properties which are comparable to that of coal fly ashes. Then, coal bottom ash subjected to an adequate mechanical grinding is suitable to be used to produce common coal-ash cements.

scholarly journals A Review of the Utilization of Coal Bottom Ash (CBA) in the Construction Industry

2021 ◽  
Vol 13 (14) ◽  
pp. 8031
Author(s):  
Syakirah Afiza Mohammed ◽  
Suhana Koting ◽  
Herda Yati Binti Katman ◽  
Ali Mohammed Babalghaith ◽  
Muhamad Fazly Abdul Patah ◽  
...  
Keyword(s):  
Human Health ◽  
Construction Industry ◽  
Bottom Ash ◽  
High Volume ◽  
Coal Bottom Ash ◽  
Substitute Material ◽  
Physical And Chemical ◽  
Vast Range

One effective method to minimize the increasing cost in the construction industry is by using coal bottom ash waste as a substitute material. The high volume of coal bottom ash waste generated each year and the improper disposal methods have raised a grave pollution concern because of the harmful impact of the waste on the environment and human health. Recycling coal bottom ash is an effective way to reduce the problems associated with its disposal. This paper reviews the current physical and chemical and utilization of coal bottom ash as a substitute material in the construction industry. The main objective of this review is to highlight the potential of recycling bottom ash in the field of civil construction. This review encourages and promotes effective recycling of coal bottom ash and identifies the vast range of coal bottom ash applications in the construction industry.

Aspects of moisture kinetics of coal bottom ash in concrete

2007 ◽  
Vol 37 (2) ◽  
pp. 231-241 ◽  
Author(s):  
L.B. Andrade ◽  
J.C. Rocha ◽  
M. Cheriaf
Keyword(s):  
Bottom Ash ◽  
Coal Bottom Ash ◽  
Kinetics Of

Immobilization of Metal Ions from Acid Mine Drainage by Coal Bottom Ash

2017 ◽  
Vol 228 (9) ◽  
Author(s):  
Varinporn Asokbunyarat ◽  
Eric D. van Hullebusch ◽  
Piet N. L. Lens ◽  
Ajit P. Annachhatre
Keyword(s):  
Acid Mine Drainage ◽  
Metal Ions ◽  
Mine Drainage ◽  
Bottom Ash ◽  
Coal Bottom Ash ◽  
Acid Mine
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