{"title":"Copper tailings filtration: Influence of filter cake desaturation","authors":"","doi":"10.1016/j.mineng.2024.108952","DOIUrl":null,"url":null,"abstract":"<div><p>Copper mining produces immense amounts of tailings due to low ore grades. These residues are increasingly dewatered by filtration in recessed plate filter presses to ensure safer storage and high recovery of water. The process parameters filtration pressure, desaturation time, desaturation pressure and cake thickness have a significant influence on achieving water content as well as bulk material stability specifications and maintaining operation performance, especially with regard to cake detachment. In this study, copper tailings filtration tests in a laboratory filter press and directly connected measurements of cake-to-fabric shear adhesion as well as filter cake shear cohesion were carried out. It is shown that optimization of cake properties with regard to residual water content, suitability for detachment and bulk material stability by specific adjustment of the filtration and post-treatment parameters is possible. Furthermore, implementation of a mathematical model allows water content, cake saturation, cake-to-fabric shear adhesion and cake shear strength prediction dependent on filter cake desaturation time and pressure for tailings filtration applications in recessed plate filter presses.</p></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":null,"pages":null},"PeriodicalIF":4.9000,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0892687524003819/pdfft?md5=8f9bf918cca0eda279f81c976726a3b5&pid=1-s2.0-S0892687524003819-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Minerals Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0892687524003819","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Copper mining produces immense amounts of tailings due to low ore grades. These residues are increasingly dewatered by filtration in recessed plate filter presses to ensure safer storage and high recovery of water. The process parameters filtration pressure, desaturation time, desaturation pressure and cake thickness have a significant influence on achieving water content as well as bulk material stability specifications and maintaining operation performance, especially with regard to cake detachment. In this study, copper tailings filtration tests in a laboratory filter press and directly connected measurements of cake-to-fabric shear adhesion as well as filter cake shear cohesion were carried out. It is shown that optimization of cake properties with regard to residual water content, suitability for detachment and bulk material stability by specific adjustment of the filtration and post-treatment parameters is possible. Furthermore, implementation of a mathematical model allows water content, cake saturation, cake-to-fabric shear adhesion and cake shear strength prediction dependent on filter cake desaturation time and pressure for tailings filtration applications in recessed plate filter presses.
期刊介绍:
The purpose of the journal is to provide for the rapid publication of topical papers featuring the latest developments in the allied fields of mineral processing and extractive metallurgy. Its wide ranging coverage of research and practical (operating) topics includes physical separation methods, such as comminution, flotation concentration and dewatering, chemical methods such as bio-, hydro-, and electro-metallurgy, analytical techniques, process control, simulation and instrumentation, and mineralogical aspects of processing. Environmental issues, particularly those pertaining to sustainable development, will also be strongly covered.