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  • SME
    Benefits From Introduction of Knelson Gold Concentrators 1n Gold Plants in Australia

    By Byron K. nelson, David Mathieson

    Until quite recently concentration of free gold in gravity circuits ahead of froth flotation and/or chemical treatment was considered an uneconomical pursuit in many gold pi.ants in Australia. Over t

    Jan 1, 1991

  • SME
    Update on "The good, the bad, and the ugly," Silica revisited

    By E. A. Metz

    It has been approximately four years since the International Agency for Research on Cancer (IARC) reclassified crystalline silica as a "group one" substance. Since then, crystalline silica has been co

    Jan 1, 2000

  • SME
    Cyanide Analysis Using Ft-raman Spectroscopy

    By G. S. Walker, W. van Bronswijk

    The accurate determination of free cyanide and metal cyanide complexes is of increasing interest to Carbon-in-Pulp (CIP) gold extraction operations as cyanide consumption is an important economic fact

    Jan 1, 1995

  • SME
    Flotation Rates Of Non-Sulphide Minerals In Chalcopyrite Flotation Processes

    By N. W. Johnson

    The behavior of non-sulphide gangue in chaloopyrite flotation circuits has been investigated. Plant and laboratory tests were carried out on five different ores, and linear relationships were found to

    Jan 1, 1972

  • SME
    The Effect Of Goethite On Production Rate In A Travelling Grate Pellet Plant

    By L. A. Baker

    The presence of goethite in a hematite ore has been shown to strongly affect the time of heating to the firing temperature. The investigation of spalling of single pellets and of packed beds has enabl

    Jan 1, 1972

  • SME
    Chemical Controls On The Bioavailability Of Cyanide - Introduction

    By A. Redman

    Aquatic organisms are sensitive to free cyanide (HCN) though the presence of certain metals that can form stable complexes and thereby reducing both the amount of bioavailable cyanide. Recent work ha

    Jan 1, 2011

  • SME
    Cyanide Geochemistry and Detoxification Regulations

    By Adrian Smith, Debra W. Struhsacker

    13.1 INTRODUCTION Cyanide is, a generic term indicating the presence of the cyanide ion (CN-). Cyanide is a very common, naturally occurring compound produced by many biochemical reactions. Many plan

    Jan 1, 1988

  • SME
    Hammer Mills and Impactors

    By E. F. Klein, R. L. Eacret

    Introduction In contrast to the general type of crushing mechanism in which the crushing surfaces alternately approach and withdraw from each other, described earlier in this section, and continuou

    Jan 1, 1985

  • SME
    The Electrowinning of Gold from Dilute Cyanide Liquors

    By L. G. Sobral, J. E. Hoffman, T. J. Keefe, A. J. Monhemius, O&apos

    The kinetics of electrodeposition of gold from dilute solutions of alkaline KAu(CN)2 at different gold and free cyanide concentrations on a gold rotating disk electrode were investigated by use of a s

    Jan 1, 1993

  • SME
    The Geology Of Montana Talc Deposits

    By Richard H. Olson

    Talc deposits in the Precambrian of southwestern Montana (Beaverhead and Madison Counties) are unique within the U. S. A. in that large bodies of tremolite-free talc can be open-pit mined. All known d

    Jan 1, 1975

  • SME
    A Universal Tunnel Design Method For Hand Calculation

    By Thomas E. Krakowski

    INTRODUCTION This paper presents a method of calculation of internal moments and thrusts in tunnel liners of any material. The method is intended for hand calculation, but as it is numerical in nat

    Jan 1, 1979

  • SME
    Hindered Settling Concentration and Jigging

    By G. W. Riley, D. E. Pickett

    HINDERED SETTLING CONCENTRATION In the free settling of mineral particles in a liquid, the falling particles are at a distance from each other so that no particle is affected by its neighbor. In hind

    Jan 1, 1985

  • SME
    How to avoid building a full- scale pilot plant by predicting and eliminating solids handling problems

    By Jerry R. Johanson

    Introduction Many solids processes that look feasible on paper or even in pilot studies become disasters in full scale. Changes in solids flow characteristics from pilot scale to full scale be- ca

    Jan 1, 1990

  • SME
    Settling equation for minerals and process applications

    By V. F. Swanson

    A mathematical model for free and hindered settling of minerals was developed. This paper describes how to apply the model in designing systems, such as fluidized bed, elutriation, mixing pumping syst

    Jan 1, 2000

  • SME
    Detoxification Of Total Cyanide With Hydrogen Peroxide

    By Andrew Griffiths

    The emphasis in the title of this paper should be placed on the world "Total", since the detoxification of cyanide in its free and weakly-complexed form with H202 has already found application in many

    Jan 1, 1998

  • SME
    Metal Recovery Applications Using a Combination of Ion Exchange and Electrowinning Using Emew® Technology

    By A. Janwong

    Ion exchange technology is becoming more prevalent for metal recovery from low concentration solutions. The products of ion exchange are typically a metal free stream (product stream) and a concentra

    Feb 23, 2014

  • SME
    Dewatering Mineral And Coal Fines By Hyperbaric Centrifugation

    By R. Asmatulu

    According to Darcy's law, the rate of filtration should increase with increasing pressure drop across a filter cake. In centrifugal filtration, the driving pressure is created by the centrifugal

    Jan 1, 2012

  • SME
    Dewatering Mineral And Coal Fines By Hyperbaric Centrifugation

    By R. Asmatulu

    According to Darcy?s law, the rate of filtration should increase with increasing pressure drop across a filter cake. In centrifugal filtration, the driving pressure is created by the centrifugal force

    Jan 1, 2012

  • SME
    Processing Of Zinc Leach Liquor In Mixer-Settler Units Using D2EHPA - A Case Study

    By P. V. R. Bhaskar Sarma, P. K. Sahoo, G. Roy Chaudhury

    A process was developed to treat an ammoniacal leach liquor containing zinc using Di (2-ethyl hexyl) phosphoric acid (D2EHPA) as the extractant. The objective of this work was to develop a process pac

    Jan 1, 1995

  • SME
    Thermodynamic Evaluation Of Oleate Chemisorption At Calcium Semi-Soluble Salt Surfaces

    By C. A. Young, J. D. Miller

    Thermodynamic data has been obtained for oleate chemisorption at fluorite (CaF2) and calcite (CaCO3) surfaces using adsorption isotherms determined previously at room and elevated temperatures by in-s

    Jan 1, 2002