Review and Optimization of the Hudbay Constancia Comminution Circuit *M. Medina1, G. Sotomayor1, V. Manchego1, J. Bonilla1, W. Valery2, R. Valle2, K. Duffy2, E. Wang2, C. Plasencia2 Hudbay Perú SAC, Hudbay Minerals Av. Jorge Chávez 235 Dpto 701, Lima, Lima 18 Hatch Pty Ltd. 61 Petrie Terrace, B...

09-Jul-2024

Evangelista, Moreira, Moura, Souza, Resende, Lisboa, Corsini, Ribeiro, Valery, Valle, Hayashida, Plasencia Presented at Procemin-GEOMET 2021 ABSTRACT Hatch and Enaex conducted a joint Mine-to-Mill optimization project at Lundin Mining’s Chapada operation in Brazil. The main objective was to maxim...

29-Nov-2021

Scott, Amini Presented at the Preconcentration Digital Conference November 2020 ABSTRACT Grade Engineering® involves the planning, integration and operation of coarse preconcentration techniques to reject uneconomic material as early as possible in the mining value chain to improve the quality of...

17-May-2021

BoBo, La Rosa, Cameron Presented at the Preconcentration Digital Conference November 2020 ABSTRACT Efficient pre-concentration using natural and induced deportment starts with effective blast design. Leveraging these characteristics using Size-Based Grade Engineering® techniques requires detailed...

13-Apr-2021

W. Valery, K. Duffy, R. Faveere, R. Hayashida, A. Jankovic, E. Tabosa, I. Yelkin Presented at IMPC 2018 ABSTRACT The mining industry faces growing challenges from more complex and lower grade deposits, rising costs, limited energy and water availability, and increasing societal pressure to operat...

23-Jun-2020

W. Valery, K Duffy, R. Valle, R. Hayashida, A. Jankovic, P. Holtham, E. Tabosa, B. Andrade Presented at Procemin GEOMET 2019 ABSTRACT In late 2017, Hatch was engaged to conduct a Mine to Process Optimization project for a large iron ore operation. The operation consists of three iron ore mines...

22-Jun-2020

M Powell, C Bozbay, S Kanchibotla, B Bonfils, A Musunuri, V Jokovic, M Hilden, J Young, E Yalcin SAG Conference Vancouver, Canada September 22 – 26, 2019 ABSTRACT In expanding the mine to process considerably more competent ore sources, this semi-autogenous-ball mill-crusher (SABC) circuit with a...

06-Jan-2020

C CARRASCO1 2, L KEENEY 1 2, T J NAPIER-MUNN2, P BODE1  PRESENTED AT COMMINUTION ’16, MINERALS ENGINEERING INTERNATIONAL, PUBLISHED IN MINERALS ENGINEERING VOLUMES 103-104, BARRY WILLS (ED), APRIL 2017. ABSTRACT Grade Engineering® comprises a range of techniques aiming to reje...

18-Jul-2017

Ban Houayxai is a gold-silver mine operated by Phu Bia Mining Limited in Laos since 2012. The first two years of operation processed predominately soft oxidised ore but subsequent years were expected to process more fresh hard ore. Fragmentation of the fresh primary ores was also expected to be much...

01-Dec-2015

ABSTRACT The total comminution and processing of hard ores to concentrate consumes a large amount of electrical energy and is theatrically reviewed. In the past two decades, research and case studies have demonstrated a beneficial relationship between explosive consumption and the grindability of...

26-Nov-2015

ABSTRACT Blasting plays a major role in the fragmentation of rock in open pit mining, which is then crushed and processed before the final product is obtained. Tailoring the blasting method to suit rock mass characteristics can lead to significant improvements downstream. Mine to Mill is a method...

25-Nov-2015

ABSTRACT In non-ferrous metal mining operations, it is generally necessary to crush and grind the ore to a very fine particle size to effectively liberate the contained mineral from the host rock. Fragmentation by blasting is the first stage of this comminution process. Numerous studies and indepen...

09-Sep-2015

Ore blending for process optimization is becoming an increasing factor for managing cost and productivity. Economic mining and processing a very low value ore in an extremely competitive market results in constant cost-cutting initiatives. The inherent conflict between the lowest possible mining cos...

02-Jan-2004

XXII International Mineral Processing Congress, Cape Town, South Africa The introduction and subsequent ascendancy of autogenous and semi-autogenous milling for comminution circuits has undoubtedly lead to many economic advantages. From a process viewpoint, however, at least one downside has been...

23-Aug-2003