02 Mineral Processing

Click here to load reader

  • date post

    20-Oct-2015
  • Category

    Documents

  • view

    47
  • download

    0

Embed Size (px)

Transcript of 02 Mineral Processing

  • Mineral Processing

    SYMPOSIUM: 02 MINERAL PROCESSING

    COD AUTHOR TITLE ABSTRACT

    MP01 Lorenzo Reyes USE OF BIOSOLIDS AND ITS MAIN COMPONENTS AS

    FROTH FLOTATION REAGENTS FOR THE CONCENTRATION

    OFF COPPER SULPHIDE ORE

    MP02 Winston Rocher THE EVOLUTION OF MILL RELINING TECHNOLOGY

    MP03 Luis Vinnett GAS DISPERSION MEASUREMENTS IN INDUSTRIAL

    FLOTATION EQUIPMENT

    MP04 Carlos Rabanal EMPIRICAL CORRELATION FOR ESTIMATING GRINDING

    MEDIA CONSUMPTION

    MP05 Ursula Kelm CHARACTERIZATION OF COPPER CLAYS AND

    GEOMETALLURGICAL IMPLICATIONS

    MP07 R. Fuentes PROGRESS MADE IN PILOT AND LABORATORY

    THICKENING STUDY

    MP08 N. Rojas EFFECT OF FINES CONTENT ON YIELD STRESS OF COPPER

    TAILINGS

    MP09 Shigeto Kuroiwa STUDY ON SEPARATION OF ARSENIC FROM COPPER

    CONCENTRATE

    MP11 Sergio Arellano TECHNICAL EVALUATION OF THE REPLACEMENT OF

    CONVENTIONAL FLOTATION CELLS BY FLOTATION

    CELLS PNEUMATIC IN THE BENEFIT OF COPPER ORES

    MP13 T. Wisdom NEXT GENERATION PRESSURE FILTERS FOR HARD ROCK

    TAILINGS

    MP16 Francisco Abbott SEAWATER USE IN ANTOFAGASTA MINING GROUP

    MP17 D. Garcia ANTAPACCAY - TINTAYA EXPANSION

    MP18 E.Visariev GRINDING CYCLE OPTIMIZATION FOR PROCESSING OF

    COPPER SLAG AT AURUBIS BULGARIA

    MP19 V. Murariu IMPROVED DEM MODEL FOR PREDICTING CONE

    CRUSHERS' PERFORMANCE

    MP22 S. Castro THE EFFECT OF FLOCCULANTS AND THEIR

    DEGRADATION PRODUCTS ON MOLYBDENITE

    FLOTATION

    MP24 Fernando Pino ADVANTAGES AND DISADVANTAGES OF BROWNFIELD

    PROJECTS

    MP26 C.O. Gomez FROTHER ROLES CHARACTERIZATION IN A LABORATORY

    FLOTATION CELL

    MP28 David Meadows SAG MILL DISCHARGE SECTION OPTIMIZATION STUDIES

    AND REDESIGN

    MP29 Felipe Henriquez INSTALLATION OF INTERNAL LAUNDERS ON 130 M

    FLOTATION CELLS AT MINERA LOS PELAMBRES

    MP30 H. Nematollahi CONCENTRATION OF COPPER OXIDE MINERAL WITH

    HYDROXAMATE

    MP31 Christopher J Greet GRINDING CHEMISTRY - THE APPLICATION OF GRINDING

    MEDIA TO IMPROVE METALLURGICAL RESPONSE OF

    COPPER ORES

    MP32 Zanin Massimiliano AMIRA P260 SILVER JUBILEE - 25 YEARS OF BENEFITS TO

    MINERALS FLOTATION

    MP33 Jose Davila NASH IN THE OPTIMIZATION OF COPPER FLOTATION

    CONCENTRATOR CUAJONE

  • Mineral Processing

    MP35 O. Angulo PREVENTING COPPER LOSS PRODUCTION AND FLOW

    PROBLEMS BY MEASURING THE MATERIALS FLOW

    PROPERTIES

    MP36 Mira Bissengaliyeva THERMODYNAMIC CONSTANTS OF MINERALS OF THE

    OXIDATION ZONE OF COPPER - ANTLERITE AND

    PSEUDOMALACHITE

    MP38 Rene Del Villar RECENT DEVELOPMENTS IN FLOTATION COLUMN

    INSTRUMENTATION AND CONTROL

    MP39 Raul Jara Iturre OPTIMIZACIN METALRGICA DE UN MINERAL DE

    COBRE CON ALTA DISEMINACIN Y DUREZA

    MP40 David Gwyther MARINE TAILINGS PLACEMENT: EXPERIENCES AND

    LESSONS FROM THE ASIA PACIFIC REGION

    MP41 C.O. Gomez MODELLING BUBBLE HYDRODYNAMICS IN FLOTATION

    MP42 G. Debernardi PRIMARY CRITERIA FOR PRESSURE COPPER LEACHING

    PROCESS SELECTION

    MP43 Rodrigo

    Huenchulln G.

    STRUCTURAL DESIGN OF RECLAIM TUNNELS ADDRESSED AS A MINGA

    MP44 Lorin Redden IMPROVED COPPER AND GOLD RECOVERY AT KGHM

    INTERNATIONALS ROBINSON MINE

    MP45 Jorge M. Menacho

    and Juan Rodrguez

    MODELLING BUBBLES GOING THROUGH FLOTATION

    CELLS

    MP47 S.E. Snchez-Pino,

    S.A. Snchez-

    Baquedano,

    R.M.Imhof, H.

    Sprenger

    PNEUMATIC FLOTATION IMHOFLOT

    PRODUCTION TECHNOLOGY IN CHILEAN MINING

    MP48 Jorge M. Menacho REMOTE SOLUTIONS TO IMPROVE PROCESS RESULTS AT

    CONCENTRATOR PLANTS

  • Mineral Processing

    MP01

    USE OF BIOSOLIDS AND ITS MAIN COMPONENTS AS FROTH FLOTATION

    REAGENTS FOR THE CONCENTRATION OF COPPER SULPHIDE ORE

    Lorenzo Reyes-Bozo

    Departamento de Ciencias de la Ingeniera, Facultad de Ingeniera, Universidad Andres

    Bello.

    Alex Godoy-Fandez

    Facultad de Ingeniera, Universidad del Desarrollo, Santiago, Chile.

    Jose Luis Salazar, Hctor Valds-Gonzlez, Eduardo Vyhmeister

    Escuela de Industrias, Facultad de Ingeniera, Universidad Andres Bello.

    Ronaldo Herrera-Urbina

    Departamento de Ingeniera Qumica y Metalurgia, Universidad de Sonora, Hermosillo,

    Sonora, Mxico.

    ABSTRACT

    According to achieve a sustainable development, Chilean mining industry needs to

    embrace the best practices to its sustainable growth as engine developments. Relationships

    between mining industry and society have been historically complex due to its

    environmental impacts. Whereas the ore grade has declined continuously, this has involved

    an intensive energy and water consumption correlated to operational costs at different

    stages of process. Indeed, the amount of organic chemical reagents used in froth flotation of

    copper sulphide ores has a big impact on production costs as well as a huge effect on the

    environment. In this research was evaluated, via standard methodologies at laboratory

    scale, the use of biosolids and its main components (i.e., humic substances) as froth

    flotation reagents for sulphide ore concentration. These substances interact through

    physical and chemical ways due to differential affinities to mineralogical species such as

    chalcopyrite and pyrite. Aqueous solutions prepared with biosolids show good frothing

    characteristics whereas humic acid was found to act as collector for the concentration of a

    copper sulphide ore. Therefore, biosolids and its main components may open an

    opportunity to be used in copper sulphide flotation plants to partially replace conventional

    reagents, which are more hazardous and less environment-friendly.

  • Mineral Processing

    MP02

    THE EVOLUTION OF MILL RELINING TECHNOLOGY

    Winston Rocher

    ABSTRACT

    Over the past fifty years, technology has advanced quicker than in any other time

    and this has impacted greatly on peoples lives, on the equipment and at work.

    The small grinding mills had an entry in the mill feed end for the spout feeder that

    didn't allow the entry of a person. The discharge of many of them had grates and the only

    way for people, liners and tools to get into them was via the manhole. The liners were

    installed manually with brute force, using tools like chain blocks, rope and chains,

    extending mills shutdown for many hours and increasing the risk of accidents.

    The increased size of mills and the high prices for metals means equipment

    designers and mining companies need to work constantly to surpass their mechanised

    technology, the quality of the materials and their components, increasing their capacity, by

    making them faster, more accurate and safer. In addition, the operators are working more

    strategically. The result has been a significant decrease of relining time and an increase in

    operator's safety.

  • Mineral Processing

    MP03

    GAS DISPERSION MEASUREMENTS IN INDUSTRIAL FLOTATION

    EQUIPMENT

    Luis Vinnett, Juan Yianatos

    ABSTRACT

    An extensive database of Sauter mean bubble diameters, D32, and superficial gas

    rates, JG, measured in different industrial flotation plants, is presented. Results involved

    mechanical flotation cells of 10 300 m3 from Rougher, Cleaner and Scavenger circuits

    and columns from Cleaner circuits. A significant effect of superficial gas rate on bubble

    diameter was observed in mechanical cells with different bubble generation mechanisms,

    cell design (self-aerated or forced air) and under different operating conditions (frother

    dosage, impeller speed). This result implies a dominant effect of the superficial gas rate on

    the gas dispersion. Also, higher D32 values were observed in flotation columns because of

    the bubble sparger system and mainly due to lack of maintenance. From the D32 and JG

    values, the bubble surface area flux, SB, was evaluated in order to determine normal

    operating conditions. The gas dispersion database is useful to select proper operating

    conditions and to define control criteria in flotation circuits.

  • Mineral Processing

    MP04

    EMPIRICAL CORRELATION FOR ESTIMATING GRINDING MEDIA

    CONSUMPTION

    Carlos Rabanal

    Moly-Cop Adesur S.A.

    [email protected]

    ABSTRACT

    The concern regarding grinding media wear is as old as the invention of the

    tumbling mills. Over the years many materials and grinding media shapes have been tested,

    through all this, steel grinding balls have proved to be the most effective media for

    comminution in tumbling mills.

    In the same way, no accurate technique for estimating the wear of the ball charge

    has been developed. The mining industry still utilizes the Bond Abrasion test that was

    developed in the 60s, this test is based in the ore properties having an error higher than