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Aspen Plus Model Simulation and Fina...

Zhu, Tian Ai.

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Aspen Plus Model Simulation and Financial Analysis of Pyrrhotite Processing Technology Options.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Aspen Plus Model Simulation and Financial Analysis of Pyrrhotite Processing Technology Options./
Author:	Zhu, Tian Ai.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
Description:	111 p.
Notes:	Source: Masters Abstracts International, Volume: 82-10.
Contained By:	Masters Abstracts International82-10.
Subject:	Chemical engineering. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28315914
ISBN:	9798597082905

Aspen Plus Model Simulation and Financial Analysis of Pyrrhotite Processing Technology Options.
Zhu, Tian Ai.

Aspen Plus Model Simulation and Financial Analysis of Pyrrhotite Processing Technology Options. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 111 p.

Source: Masters Abstracts International, Volume: 82-10.

Thesis (M.A.S.)--University of Toronto (Canada), 2021.

This item must not be sold to any third party vendors.

The feasibility of a novel bioleaching two-stage process for pyrrhotite tailings treatment is evaluated using leaching kinetics and process simulation of the proposed tailing treatment process, using Microsoft Excel and Aspen Plus V10. Some operational limits encountered during the process simulation include low solids loading and abiotic conversion, which constrained by the operating pH, especially for the biotic unit. In addition, a trade-off observed between metal solution throughput and % nickel recovery.Based on the process simulation of a plant with a 500 tonne/hour tailing throughput, a financial analysis of the two-stage process predicted a net present value of -$6.9 billion, with a 15% discount rate. The main contributors that affect the net present value of the process are the capital cost and the sales revenue based on 29% sulfur and 54% nickel recovery. Comparisons with other alternative processes and closure plans indicate the need for further improvements of the two-stage process.

ISBN: 9798597082905Subjects--Topical Terms:

560457
Chemical engineering.
Subjects--Index Terms:

Bioleaching

Aspen Plus Model Simulation and Financial Analysis of Pyrrhotite Processing Technology Options.
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245 1 0 $a Aspen Plus Model Simulation and Financial Analysis of Pyrrhotite Processing Technology Options.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 111 p.
500 $a Source: Masters Abstracts International, Volume: 82-10.
500 $a Advisor: Saville, Bradley.
502 $a Thesis (M.A.S.)--University of Toronto (Canada), 2021.
506 $a This item must not be sold to any third party vendors.
520 $a The feasibility of a novel bioleaching two-stage process for pyrrhotite tailings treatment is evaluated using leaching kinetics and process simulation of the proposed tailing treatment process, using Microsoft Excel and Aspen Plus V10. Some operational limits encountered during the process simulation include low solids loading and abiotic conversion, which constrained by the operating pH, especially for the biotic unit. In addition, a trade-off observed between metal solution throughput and % nickel recovery.Based on the process simulation of a plant with a 500 tonne/hour tailing throughput, a financial analysis of the two-stage process predicted a net present value of -$6.9 billion, with a 15% discount rate. The main contributors that affect the net present value of the process are the capital cost and the sales revenue based on 29% sulfur and 54% nickel recovery. Comparisons with other alternative processes and closure plans indicate the need for further improvements of the two-stage process.
590 $a School code: 0779.
650 4 $a Chemical engineering. $3 560457
650 4 $a Mining. $3 3544442
653 $a Bioleaching
653 $a Pyrrhotite tailings
653 $a Metal solution
653 $a Nickel recovery
690 $a 0542
690 $a 0551
710 2 $a University of Toronto (Canada). $b Chemical Engineering & Applied Chemistry. $3 3190728
773 0 $t Masters Abstracts International $g 82-10.
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792 $a 2021
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28315914