Development of Operating Model for the Design of Stirrer Arms of Slurries: A Review

Okpighe, Sunday Okerekehe; Shadrack, M. U.; Nwosu, H. U.

doi:10.9734/cjast/2022/v41i1931742

Cited by 2 publications

(7 citation statements)

References 31 publications

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“…Also the work of [2] indicated that the TEET static stirrer arm gave the best mixing performance among the stirrer arms considered. This is also duly reported by [3]. As observed by [3], modeling of the TEET static blade into its dynamic equivalent will give an unstable dynamic stirrer due to imbalance of forces.…”

Section: Introduction 11 Statement Of Problemsupporting

confidence: 54%

“…This is also duly reported by [3]. As observed by [3], modeling of the TEET static blade into its dynamic equivalent will give an unstable dynamic stirrer due to imbalance of forces. Consequent on this, the TEET will be approximated to a TETE blade arrangement which will be dynamically stable in operation.…”

Section: Introduction 11 Statement Of Problemsupporting

confidence: 54%

“…The work of [1] indicated that the Two Z stirrer arm gave the best mixing performance among the stirrer arms considered. This is duly reported in [3]. Also the work of [2] indicated that the TEET static stirrer arm gave the best mixing performance among the stirrer arms considered.…”

Section: Introduction 11 Statement Of Problemmentioning

confidence: 69%

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Development of Operating Model for the Design of Stirrer Arms of Slurries: Design and Fabrication of Stirrer Arms

Okpighe

Shadrack

Nwosu

2022

CJAST

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The “Development of Operating Model for the Design of Stirrer Arms of Slurries: Design and Fabrication of Stirrer Arms” is reported. In the previous research titled “Development of Operating Model for the Design of Stirrer Arms of Slurries: A Review”, a research gap was identified to exist between the Two Z and TETE blade stirrer arms. The aim of this current research was to demonstrate a model/design and fabrication of the Two Z and TETE blade stirrer arms with the view of creating a platform for the future comparative tests of these stirrer arms. The specific objectives for this research include the identification and selection of all the materials needed to achieve the aim of the research (including the selection of the mixer that will host the stirrer arms); Design of the Two Z and TETE blades of the stirrer arms (with the application of the Solid Work software) in tandem with the selected mixer; Design calculations for the Two Z and TETE blades; Fabrication of the Two Z and TETE blades of stirrer arms in tandem with the selected mixer; Constitution of the slurry to be mixed and Calibration of the slurry viscosity. All the set objectives for this research were achieved and consequent on the foregoing, the theoretical (predicted or expected) mixing power consumption for the Two Z, TETE and hybrid Two Z – TETE blade stirrer arms were determined. The order of merit analysis for the theoretical (predicted or expected) power revealed the Two Z stirrer arm as the most efficient. Further future work should include empirical performance tests of the Two Z, TETE and hybrid Two Z – TETE stirrer arms. This will establish/validate the level of degree of agreement between the theoretical (expected) and empirical (observed) mixing power consumption of the stirrer arms. Also such tests will highlight the comparative mixing power and energy efficiency of these stirrer arms hence the order of merit of being called to bar.

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Section: Introduction 11 Statement Of Problemsupporting

confidence: 54%

Section: Introduction 11 Statement Of Problemsupporting

confidence: 54%

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Development of Operating Model for the Design of Stirrer Arms of Slurries: Design and Fabrication of Stirrer Arms

Okpighe

Shadrack

Nwosu

2022

CJAST

Self Cite

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“…Previous review of the works of [1] and [2] by [3] revealed that the Two Z and TETE stirrer arms were the most efficient and effective in their category respectively. Consequent on this finding, the design and fabrication of the Two Z and TETE stirrer arms was done by [4].…”

Section: Introduction 11 Statement Of Problemmentioning

confidence: 99%

“…The governing equation for the Order of Merit Analysis is: (3) . where, N is the number of stirrer arms.…”

Section: Introduction 11 Statement Of Problemmentioning

confidence: 99%

Development of Operating Model for the Design of Stirrer Arms of Slurries: Empirical Evaluation of Stirrer Arms

Okpighe

Shadrack

Nwosu

2022

CJAST

Self Cite

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The “Development of Operating Model for the Design of Stirrer Arms of Slurries: Empirical Evaluation of Stirrer Arms” is reported. Previous work reviewed the “Operating Model for the Design of Stirrer Arms of Slurries” and identified the Two Z and TETE stirrer arms as the most effective. Furthermore, subsequent work “Development of Operating Model for the Design of Stirrer Arms of Slurries: Design and Fabrication of Stirrer Arms” designed and fabricated the Two Z and TETE stirrer arms, evaluated the theoretical (expected) Slurry Mixing Power and Order of Merit Analysis. The current work did the empirical evaluation of the Two Z and TETE stirrer arms and also the hybrid Two Z - TETE stirrer arms. The Objectives of this research were: to do the mixing performance tests in terms of mixing time, power and energy consumed by the Two Z blade, TETE blade and Two Z – TETE hybrid blade using the constituted slurry; to validate the theoretical (predicted or expected) mixing power for the Two Z blade, TETE blade and Two Z – TETE hybrid blade by comparison with the empirical power using the Chi Square; to do the Power, Time and Energy order of merit analysis for the Two Z blade, TETE blade and the Two Z – TETE hybrid blade. Using the Philips HR 1565 mixer with the Akamu (pap) (Viscosity calibrated) slurries, the time and current drawn for complete and consistent slurry mixing by each type of stirrer arm (namely: Two Z, TETE and Two Z – TETE) was recorded. Results obtained were analyzed using the Chi Square and the Order of Merit. There was excellent agreement between the adjusted predicted (expected) slurry mixing power (E’) and Observed slurry mixing power (O) at 5% confidence level. Empirical model was developed to predict expected slurry mixing power. The Order of Merit analysis revealed the TETE stirrer arm as the most energy efficient.

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Development of Operating Model for the Design of Stirrer Arms of Slurries: A Review

Cited by 2 publications

References 31 publications

Development of Operating Model for the Design of Stirrer Arms of Slurries: Design and Fabrication of Stirrer Arms

Development of Operating Model for the Design of Stirrer Arms of Slurries: Design and Fabrication of Stirrer Arms

Development of Operating Model for the Design of Stirrer Arms of Slurries: Empirical Evaluation of Stirrer Arms

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