Application of SAP to Improve the Handling Properties of Iron Ore Tailings of High Cohesiveness: Could a Reagent Help the Decommissioning Process of a Dam? DOI Creative Commons

Hely Simões Gurgel,

Ivo Schneider

Mining, Год журнала: 2024, Номер 4(4), С. 733 - 746

Опубликована: Окт. 2, 2024

This work aims to evaluate the use of a superabsorbent polymer (SAP) provide improvements in handling properties iron ore tailings (IOT). The material studied came from magnetic separation reprocessing discarded at Gelado Dam, located Serra dos Carajás state Pará, Brazil. While concentrate presents reasonable conditions, tailings, with 61.5% iron, 15% moisture, and 39% mass, have high cohesiveness adhesiveness due their fine nature climatic conditions Amazon rainforest. However, can still be considered product as long transportation logistics are feasible. Thus, studies an SAP IOT were carried out bench rotating drum promote mixing between them, main variables dosage required contact time. improvement physical evaluated considering Hausner ratio, Carr index, Jenike’s flow function Atterberg limits, chute angle. promoted significant consistency material, best performance was obtained 1000 g t−1. As suitable condition promoted, time 1 min enough achieve expected benefits. After dosing polymer, material’s classification changed ‘cohesive’ ‘easy flow’, angle reduced 90° levels below 60°. It concluded that application has potential improve fluidity concentration operation, allowing it handled throughout production chain. appears important additive for full present dam (100% recovery), both economic socio-environmental

Язык: Английский

Beyond the hurdles: Exploring policy obstacles in the path to circular economy adoption DOI
Muhammad Shujaat Mubarik, Andreas Kontoleon, Muhammad Shahbaz

и другие.

Journal of Environmental Management, Год журнала: 2024, Номер 370, С. 122667 - 122667

Опубликована: Окт. 5, 2024

Язык: Английский

Процитировано

4

Sustainable strategic management: how speed and flexibility drive performance through innovation DOI
Samuel Koomson

Business Process Management Journal, Год журнала: 2025, Номер unknown

Опубликована: Март 22, 2025

Purpose Different studies have found different results about how certain aspects of strategic agility – speed (SS) and flexibility (SF) affect companies’ performance. While some researchers show that SS SF fail to strengthen performance, others disagree. However, insufficient effort has been made resolve this conflict. This makes it difficult benchmark industry best practices. It also impedes academic progress in management. study seeks offer clarity the literature. introduces sustainable innovation as an intervener SS–sustainable performance SF–sustainable relationships. Design/methodology/approach Data were solicited from 587 managers across three industries mining, banking food & beverage emerging economy. The data analysed using partial least squares-structural equation modelling. Findings Sustainable partially intervened explained 25.322% 47.344% variance, respectively. accounted for nearly twice variance compared SS. findings revealed is more crucial than regarding implementation sustainability initiatives. Research limitations/implications Further research should introduce other mediators, such organisational ambidexterity. concept helps explore new opportunities simultaneously while exploiting existing capabilities. could moderating role leadership. Practical implications lessons large companies, small- medium-sized enterprises government are discussed. Originality/value paper solves a major theoretical puzzle field. explains why agile companies succeed struggle. key differentiator. shows traditional concepts like can be repurposed goals. improves our understanding which matter most outcomes. contributes field

Язык: Английский

Процитировано

0

A study on decision-making problems in fish selection for aquaculture projects DOI Creative Commons
Yujie Wang

Academic Journal of Business & Management, Год журнала: 2024, Номер 6(4)

Опубликована: Янв. 1, 2024

In recent years, with the development of society and improvement material living standards, aquatic products consumption in people's lives occupies an increasingly important position, more productive marketable have also become common goal farms. Fish species, as part aquaculture, is key to determine success or failure aquaculture business, so selection good fish species great significance scale supply farming society. this paper, we find recommended for by simulating demand using a management decision model.

Язык: Английский

Процитировано

0

Optimal combination choice of submersible search and rescue equipment based on AHP-multi-objective planning DOI Creative Commons
Xinyang Zhang

Highlights in Science Engineering and Technology, Год журнала: 2024, Номер 101, С. 653 - 658

Опубликована: Май 20, 2024

There are a variety of accidents that can occur when submersible is traveling in the ocean. The main solution to improve survival rate passengers optimize combination search equipment on ship. In this paper, preparation cost, maintenance cost and usage efficiency different types firstly identified as decision variables, safety, availability inter-equipment compatibility constraints, minimization total under premise maximizing objective function. By establishing multi-objective planning model, optimal brand found. Finally, solved by robotic arm, Forum Sub-Atlantic Mohican ROV, an underwater light, Underwater Kinetics Aqualite Pro, minimized overall $90, 619. 05. This result not only reduces rescue, but also improves efficiency, which strong guidance for future rescue field.

Язык: Английский

Процитировано

0

Application of SAP to Improve the Handling Properties of Iron Ore Tailings of High Cohesiveness: Could a Reagent Help the Decommissioning Process of a Dam? DOI Creative Commons

Hely Simões Gurgel,

Ivo Schneider

Mining, Год журнала: 2024, Номер 4(4), С. 733 - 746

Опубликована: Окт. 2, 2024

This work aims to evaluate the use of a superabsorbent polymer (SAP) provide improvements in handling properties iron ore tailings (IOT). The material studied came from magnetic separation reprocessing discarded at Gelado Dam, located Serra dos Carajás state Pará, Brazil. While concentrate presents reasonable conditions, tailings, with 61.5% iron, 15% moisture, and 39% mass, have high cohesiveness adhesiveness due their fine nature climatic conditions Amazon rainforest. However, can still be considered product as long transportation logistics are feasible. Thus, studies an SAP IOT were carried out bench rotating drum promote mixing between them, main variables dosage required contact time. improvement physical evaluated considering Hausner ratio, Carr index, Jenike’s flow function Atterberg limits, chute angle. promoted significant consistency material, best performance was obtained 1000 g t−1. As suitable condition promoted, time 1 min enough achieve expected benefits. After dosing polymer, material’s classification changed ‘cohesive’ ‘easy flow’, angle reduced 90° levels below 60°. It concluded that application has potential improve fluidity concentration operation, allowing it handled throughout production chain. appears important additive for full present dam (100% recovery), both economic socio-environmental

Язык: Английский

Процитировано

0