干旱区生态环境知识资源中心(Arid): Flow Enhancement of Mineral Pastes to Increase Water Recovery in Tailings: A Matlab-Based Imaging Processing Tool

Arid

DOI	10.1155/2020/5607242
	Flow Enhancement of Mineral Pastes to Increase Water Recovery in Tailings: A Matlab-Based Imaging Processing Tool
	Mondaca, S. L.1; Leiva, C. A.1; Acuna, C. A.2; Serey, E. A.1
通讯作者	Leiva, C. A.
来源期刊	SCIENTIFIC PROGRAMMING
ISSN	1058-9244
EISSN	1875-919X
出版年	2020
卷号	2020
英文摘要	The rate of growth of mining copper industry in Chile requires higher consumption of water, which is a resource limited in quality and quantity and a major point of concern in present times. In addition, the efficient use of water is restricted due to high levels of evaporation (10 to 15 (l/m(2)) per day), in particular at the north highland mining sites (Chile). On the contrary, the final disposal of tailings is mainly on pond, which loses water by evaporation and in some cases by percolation. An alternative are the paste thickeners, which generate stable paste (70% solids), reducing evaporation and percolation and therefore reducing water make up. Water is a resource with more demand as the industries are expanding, making the water recovery processes more of a necessity than a simple upgrade in efficiency. This technology was developed in Canada (early 80s) and it has widely been used in Australia (arid zones with similar weather conditions to Chile), although few plants are using this technology. The tendency in the near future is to move from open ponds to paste thickeners. One of the examples of this is Minera El Tesoro. This scenario requires developing technical capacity in both paste flow characterization and rheology modifiers (fluidity enhancer) in order to make possible the final disposal of this paste. In this context, a new technique is introduced and experimental results of fluidity modifiers are discussed. This study describes how water content affects the flow behavior and depositional geometry of tailings and silica flour pastes. The depositional angle determined from the flume tests, and the yield stresses is determined from slump test and a rheological model. Both techniques incorporate digital video and image analysis. The results indicate that the new technique can be incorporated in order to determine the proper solid content and modifiers to a given fluidity requirement. In addition, the experimental results showed that the pH controls strongly the fluid paste behavior.
类型	Article
语种	英语
国家	Chile
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000540602300001
WOS关键词	RHEOLOGY
WOS类目	Computer Science, Software Engineering
WOS研究方向	Computer Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319780
作者单位	1.Univ Catolica Norte, Dept Chem Engn, Antofagasta 1270709, Chile; 2.Univ Tecn Federico Santa Maria, Dept Chem & Environm Engn, Valparaiso 2390123, Chile
推荐引用方式 GB/T 7714	Mondaca, S. L.,Leiva, C. A.,Acuna, C. A.,et al. Flow Enhancement of Mineral Pastes to Increase Water Recovery in Tailings: A Matlab-Based Imaging Processing Tool[J],2020,2020.
APA	Mondaca, S. L.,Leiva, C. A.,Acuna, C. A.,&Serey, E. A..(2020).Flow Enhancement of Mineral Pastes to Increase Water Recovery in Tailings: A Matlab-Based Imaging Processing Tool.SCIENTIFIC PROGRAMMING,2020.
MLA	Mondaca, S. L.,et al."Flow Enhancement of Mineral Pastes to Increase Water Recovery in Tailings: A Matlab-Based Imaging Processing Tool".SCIENTIFIC PROGRAMMING 2020(2020).