Computer/Mathematical Modelling in Materials Processing Operations

Sahai, Yogesh

doi:10.1080/08827509208952691

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…The proposed symbolism can be very helpful in many applications, including writing computer programs, and algorithms (e.g., Sahai, 1992;Szekely and Trapaga, 1994;Ashby, 1996;Ketata and Rockwell, 2008;Miljanovic and Vujic, 2008), allowing fast communication, indicating existence of other option to be considered.…”

Section: Introductionmentioning

confidence: 99%

A Proposition of Symbolism of Non-Ideal Separations Followed by Analytical Procedures for Description of Separation Processes

Kowalczuk

Drzymala

2011

Mineral Processing and Extractive Metallurgy Review

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A notation system is proposed to characterize separation systems. Four elements were taken into account: quantity and quality of separation products, component type in the products and feed, as well as the value of feature utilized for separation. The proposed symbolism consists of two parts. The first part describes separation procedure while the second one describes the way separation results are analyzed and presented. For instance, symbol 3[F n,5 P i,2 XejjUP(Re FPjXek jRc FPj ) (j ¼ 1...5, k¼Cu) V 4 ]2 indicates that three identical feeds (F) were separated twice (2) non-ideally (n) into five (j ¼ 1.5) products (P), which were further separated ideally (i) into two (k ¼ 1 . . . 2) chemical components (Xe) (for instance, Cu and remaining elements). The results of separation were analyzed as cumulative recovery Re of Cu in products versus cumulative yield Rc of products at four levels of operational variables (V 4 ). It also means that each sample was investigated six times for reproducibility. The analysis was based on comparing yield (quantity parameter) and recovery (quality parameter), and was named upgrading (UP). Other parameters that can be considered are component type and value of feature used for separation, and all four provide six ways of analyzing separation systems named classification, sorting, splitting, distribution, and description. The proposed system in this paper is symbolic representation of separation procedure and the way of evaluation separation results is based on an easy-to-write sequence of signs helping a quick and precise understanding of the considered separation system. The proposed symbolism can be useful in applications such as computer programs and algorithms, fast communication, and education on existence of other options of separation delineation.

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Section: Introductionmentioning

confidence: 99%

A Proposition of Symbolism of Non-Ideal Separations Followed by Analytical Procedures for Description of Separation Processes

Kowalczuk

Drzymala

2011

Mineral Processing and Extractive Metallurgy Review

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“…Nowadays, novel processes involved in BF ironmaking are usually investigated by numerical simulations. Using numerical simulations, investigators can gain very detailed information to examine the feasibility, understand the mechanisms, and optimize operation conditions towards the envisaged BF processes [26][27][28][29]. Simulations on BF operations with CCB charging have been conducted by Chu et al [30] and Yu et al [31].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigations on Charging Carbon Composite Briquettes in a Blast Furnace

Wang

Tang

et al. 2021

Metals

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In the present research, charging carbon composite briquettes (CCB) in a blast furnace (BF) was investigated. The CCB used contained 29.70 wt.% Fe3O4, 39.70 wt.%, FeO, 1.57 wt.% iron, 8.73 wt.% gangue, and 20.30 wt.% carbon. Its reaction kinetics in BF was examined by nonisothermal tests and modeled. Thereafter, the influence of replacing 10% ore with CCB on BF performance was studied by numerical simulations. Results showed that the CCB reaction behavior in BF could be modeled using the previously proposed model under ags = 1900 m2·m−3. Numerical simulations on a BF with a production of 6250t hot metal per day (tHM/day) showed that replacing 10% ore with CCB efficiently improved the BF operation for coke saving. In the CCB charging operation, the CCB reached a full iron-oxide reduction above the cohesive zone (CZ) and a carbon conversion of 85%. By charging CCB, the thermal state in the BF upper part was significantly changed while it was not influenced in the BF lower part; the ore reduction was retarded before the temperature reached 1073 K and was prompted after and the local gas utilization tends to increase above the CZ. By the CCB reduction above the CZ, BF top gas temperature was decreased by 8 K, the BF top gas utilization was increased by 1.3%, the BF productivity was decreased by 17 tHM/day, the coke rate was decreased by 52.2 kg/tHM, and ore rate was decreased by 101 kg/tHM. Considering the energy consumption of sintering and coking, charging the CCB could have a significant energy-saving and CO2-emission-reducing effect for BF iron making.

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Systematic Framework toward a Highly Reliable Approach in Metal Accounting

Ghorbani

Nwaila

2020

Mineral Processing and Extractive Metallurgy Review

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Computer/Mathematical Modelling in Materials Processing Operations

Cited by 5 publications

References 2 publications

A Proposition of Symbolism of Non-Ideal Separations Followed by Analytical Procedures for Description of Separation Processes

A Proposition of Symbolism of Non-Ideal Separations Followed by Analytical Procedures for Description of Separation Processes

Experimental and Numerical Investigations on Charging Carbon Composite Briquettes in a Blast Furnace

Systematic Framework toward a Highly Reliable Approach in Metal Accounting

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