Welcome to American Journal of Industrial Engineering

American Journal of Industrial Engineering is a peer-reviewed, open access journal that provides rapid publication of articles in all areas of Industrial Engineering. The aim of the journal is to provide academicians, researchers and professionals a platform to share cutting-edge development in the field of Industrial Engineering.

ISSN (Print): 2377-4320

ISSN (Online): 2377-4339

Editor-in-Chief: Ajay Verma

Website: http://www.sciepub.com/journal/AJIE

   

Article

Reliability Level of Smelting Gross Energy Requirement (SGER) Dependence on Direct Fuel Input and Process Free Energy Change

1Department of Metallurgical and Materials Engineering, NnamdiAzikiwe University, Awka, Nigeria

2Department of Industrial Physics, Ebonyi State University, Abakiliki, Nigeria

3Department of Metallurgical and Materials Engineering, Enugu State University of Science & Technology, Enugu, Nigeria

4Metallurgical Training Institute, Onitsha, Nigeria


American Journal of Industrial Engineering. 2014, 2(2), 21-28
doi: 10.12691/ajie-2-2-1
Copyright © 2014 Science and Education Publishing

Cite this paper:
C. I. Nwoye, M. O. Nwankwo, E. M. Ameh, N. E. Idenyi, L. C. Oshionwu, S. A. Abella. Reliability Level of Smelting Gross Energy Requirement (SGER) Dependence on Direct Fuel Input and Process Free Energy Change. American Journal of Industrial Engineering. 2014; 2(2):21-28. doi: 10.12691/ajie-2-2-1.

Correspondence to: C.  I. Nwoye, Department of Metallurgical and Materials Engineering, NnamdiAzikiwe University, Awka, Nigeria. Email: nwoyennike@gmail.com

Abstract

This paper presents an assessment of the reliability level of Smelting Gross Energy Requirement (SGER) dependence on the direct fuel input and free energy change during industrial processing of engineering materials and minerals. A two-factorial polynomial-logarithmic model was derived and validated for empirical analysis of the dependent-independent variable relationship, which invariably aided reliability level evaluation. The validity of the model; ζ = - 0.071 ϑ 3 + 1.9885 ϑ 2 + 9.3181 ϑ - 0.0035 ɤ + 0.006 ln ɤ + 15.586 was rooted on the core model expression ζ - 15.586 = - 0.071ϑ 3 + 1.9885ϑ2 + 9.3181ϑ - 0.0035 ɤ + 0.006 ln ɤ where both sides of the expression were correspondingly nearly equal. The derived model was used to generate results of SGER, and its trend of distribution was compared with that from experimental results as a means of verifying its validity. The results of this verification translated into very close alignment of curves and significantly similar trend of data point’s distribution for experimental and derived model-predicted results. Evaluations from generated results indicated that SGER per unit direct fuel input & free energy change as obtained from experiment and derived model were 8.9260 and 9.0471 & 15.7474 and 15.9609 respectively. The evaluated measure of variability in experimental and model-predicted data sets relative to direct fuel input and free energy change were 121.6667 and 119.7662 as well as 123.1929 and 120.6838 respectively. Deviational analysis indicated that the maximum deviation of model-predicted SGER from the experimental results was less than 9.6%. This translated into over 90% operational confidence and reliability level for the derived model as well as 0.9 reliability coefficient for the SGER dependence on direct fuel input and free energy change accompanying the smelting process.

Keywords

References

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Article

The Optimization of Copper Utilization during Copper Removing of Technical Lead

1Faculty of Geosciences, University of Mitrovica

2American University in Kosova, Prishtinë


American Journal of Industrial Engineering. 2015, 3(1), 1-5
doi: 10.12691/ajie-3-1-1
Copyright © 2015 Science and Education Publishing

Cite this paper:
Ahmet Haxhiaj, Egzon Haxhiaj. The Optimization of Copper Utilization during Copper Removing of Technical Lead. American Journal of Industrial Engineering. 2015; 3(1):1-5. doi: 10.12691/ajie-3-1-1.

Correspondence to: Ahmet  Haxhiaj, Faculty of Geosciences, University of Mitrovica. Email: ahaxhiaj52@yahoo.com

Abstract

In order to have increased utilization of copper during the decoppering process of technical lead in lead refinery in Trepça two samples have been analyzed with the same chemical composition. Furthermore, identical parameters have been used for both samples which are: the quantity of technical lead, the process temperature, the quantity of brimstone loaded, the mixing time and the time of removal of schlicker, and the dismantle of rings formed in the walls of caldron for refinery. After the removal of brimstone schlicker and chemical analyses one calculates the balance of melting phases and decoppering and the scale of copper utilization. The majority of copper is removed from technical lead with the oxide schlicker, one part with the liquation and remaining part by decoppering with brimstone. The paper reflects on increasing utilization of copper in the decoppering of technical lead which is achieved with effective engagement of human factor.

Keywords

References

[1]  Haxhiaj A, Rizaj M, Elezi D. The Management of Slag and Lead Losses with Slag in Port-Piri Furnace. Prishtinë: ALB-Shkenca Institute, International Annual Meetings, 2008.
 
[2]  Agolli F. Metalurgjia e Metaleve me Ngjyrë. Prishtinë, 1985.
 
[3]  Kumbara H. Metalurgjia e Metaleve me Ngjyra, Pjesa e parë. Tiranë, 1979.
 
[4]  Đokič V. Savremini Procesi u Metalurgiju Bakra, Olova i cinka. Titova, Mitrovica, 1982.
 
[5]  Smirinov P.M. Rafinirovanje Sfinca i Perera Potka Polu Produktov. Moskva: Metalurgija, 1975.
 
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[6]  Recykling of Metallferous Materials. Birmingen: Conference Organized by Institution of Mining and Metalurgy, 1990.
 
[7]  Vraçar R, Nikoliç B. Ekstraktivna Metalurgija Olova Nauçna Kniga, Beograd, 1995.
 
[8]  Haxhiaj A, Drelich J. Constituens and Porosity of Lead Concentrate Pellets Produced in the Trepce Plant. San Diego, California: 2nd International Symposium on High-Temperature Metallurgical Processing, 2011.
 
[9]  Institution ‘lead-zinc’ in Trepça.
 
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Article

Product Design and Development of Dual Table

1Department of Industrial Engineering and Management, Khulna University of Engineering & Technology, Khulna, Bangladesh

2Department of Mechanical Engineering, Khulna University of Engineering & Technology, Khulna, Bangladesh


American Journal of Industrial Engineering. 2015, 3(1), 6-15
doi: 10.12691/ajie-3-1-2
Copyright © 2015 Science and Education Publishing

Cite this paper:
Md. Maksudul Islam, Lipon Kumar Sarkar, Md. Sajibul Alam Bhuyan, Sayed Shafayat Hossain. Product Design and Development of Dual Table. American Journal of Industrial Engineering. 2015; 3(1):6-15. doi: 10.12691/ajie-3-1-2.

Correspondence to: Md.  Maksudul Islam, Department of Industrial Engineering and Management, Khulna University of Engineering & Technology, Khulna, Bangladesh. Email: maksudkhandakar@gmail.com

Abstract

Product design is a crucial task and its development requires systematic path for the successful development of the product. To withstand in the competitive market, it is crying need to improve and enhance the feature or part of products in all seasons. Actually it is very difficult and challenging issue to launch a new product or derivative of a product in the market for first moment. In this research work, we have tried to create a new platform of existing derivative product (dual table) by following a systematic and sophisticated way. Here, numerous quality tools &strategic selecting tools like QFD, HOQ, SCAMPER, Cause and Effect diagram, Concept Screening, Concept Scoring and so on are used for giving a successful portfolio for further development of the product. To keep pace with the competitive marketing situation, an economic analysis has been accomplished for profitable launching of the product. Innovative changes in the conventional table contribute and accelerate the design and development of dual table.

Keywords

References

[1]  Karl T. Ulrich & Steven D. Eppinger, [2004] “Product Design and Development”, 3rd Edition, Tata Mcgraw Hill.
 
[2]  Dr.M.Ahsan Akhtar Hasin, [2007] “Quality control and Management”, 1st Edition, Bangladesh Business Solutions, Dhaka.
 
[3]  “Designing Customer Satisfaction with Quality Function Deployment”.http://members.questline.com/Article.aspx?articleID=3135.
 
[4]  Ahasan Habib, Ghazi Abu Taher and Moumita Saha; [2013] “MULTIFUNCTIONAL COMPUTER TABLE”, IJRET: International Journal of Research in Engineering and Technology; Vol. 02, Issue 10, Oct-2013.