EVALUATION OF THE ROUGHER FEED AND CONCENTRATE SIZE DISTRIBUTIONS FROM THE SALOBO SULPHIDE COPPER ORE PROCESSING PLANT

Holos

Mauricio Guimarães Bergerman¹  Francisco das Chagas Olegario Júnior²  Ronaldo Almeida Fonseca² 

[1] Departamento de Engenharia de Minas e de Petróleo da Universidade de São Paulo;Vale S.A.;

关键词: flotation;    regrinding;    copper;    classification;   

DOI  :  10.15628/holos.2017.6524

来源: DOAJ

【 摘 要 】

Salobo plant processes a gold and copper sulfide ore. The flotation process comprises the rougher, cleaner, and scavenger stages. Concentrate from the rougher and scavenger stages goes through a regrinding process before being fed into the cleaner stage. During the first years of operation, it was noticed that the regrinding feed size was consistently finer than expected, even though the flotation feed size (rougher stage) was within the planned parameters and significantly coarser than the concentrate from the rougher stage. This paper describes the results of field samplings and laboratory tests carried out to identify the factors behind such difference and to quantify it. Moreover, it shows the impacts of such size difference on the concentrate regrinding stage.

【 授权许可】

Unknown