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  • CIM
    Chemical Control of Hydrogen Sulphide During Drill Stem Tests

    By Joseph U. Messenger

    A method of applying ammonium hydroxide to a drill stem containing hydrogen sulphide gas and hydro-gen-sulphide-bearing oil and water so as to remove the hydrogen sulphide as ammonium sulphide is de-s

    Jan 1, 1958

  • 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

  • CIM
    Chemical Conversion Coating Used for Magnesium Electronic Housings

    By I. Nakatsugawa

    Chemical conversion coating is a process to create thin oxide/hydroxide film containing several inorganic/organic compounds by way of chemical deposition reaction. In case of the application to Mg mob

    Jan 1, 2006

  • SME
    Chemical Conversion Of Chalcopyrite To Copper Sulfides

    By Hun-Joon Sohn

    Chemical metathesis and electrochemical reductive conversion of chalcopyrite in the presence of cupric ions were studied in sulfuric acid solutions for temperatures up to 90°C. The process results in

    Jan 1, 1984

  • TMS
    Chemical Corrosion Resistance Coating on Aluminum Substrate by the Sol-Gel Process

    By Kazuyoshi Shimakage, Shinji Hirai, Kenji Wada

    "An amorphous zirconium oxide coating was prepared by the sol-gel process using zirconium tetra-n-butoxide on the surface of aluminum to improve the corrosion resistance to salt, acid and alkaline att

    Jan 1, 2000

  • CIM
    Chemical Cyanide Destruction Process Selection Based on Laboratory Testing

    By R. Agius, A. Nacu

    "Cyanide destruction technologies are implemented at gold and silver operations to comply with the International Cyanide Management Code and meet ever more stringent discharge limits. Currently, the m

    Jan 1, 2017

  • SME
    Chemical Demineralization Of Three Different Graphite Ores From Turkey

    By Ö. Kaya

    The removal of gangue minerals from three different graphite ores (Inebolu, Akdag?madeni and Çoraklidere) from Turkey by acid leaching was studied. Acid leaching experiments were applied to the flotat

    Jan 1, 2009

  • SME-ICGCM
    Chemical Destressing to Alleviate Rockbursts

    By S. P. Singh

    Destress blasting is commonly used in the mines to minimize the occurrence of rockbursts. The fracturing created by destressing in the vicinity of the face reduces the stress concentration by pushing

    Jan 1, 1987

  • SME
    Chemical Dewatering Aids for Mineral and Coal Slurries

    By Kevin L. Purdy

    Chemical dewatering aids for mineral slurries generally fall into two classes: surfactants and flocculants, which can be used separately or together. Current industrial use of both types of reagents i

    Jan 1, 1986

  • AIME
    Chemical Engineer Views the Steel 1ndustry

    By Charles Ramseyer

    THE manufacture of iron and steel is one of the largest of our indus-tries; and in point of size of single plant and equipment certainly the biggest of all industries. By the general public it is gene

    Jan 1, 1934

  • AUSIMM
    Chemical Enhancement to Magnetic Separation for Effective Separation of Silicates from Titanium Phases at Finer Particle Size Fraction

    By S A. Ravishankar

    In heavy minerals separation, the titanium and iron oxide phases are separated from silicates in the coarser particle size range (80 - 150 mm) using magnetic and electrostatic separators. With the ong

    Oct 5, 2011

  • IMPC
    Chemical Enhancement to Magnetic Separation in Kaolin Beneficiation

    The value creation with kaolin clays depends on removing the colored impurities which manifests in to higher brightnessone of the most sought after properties on applications such as paper coating, pa

    Jan 1, 2014

  • AUSIMM
    Chemical Enrichment of Low Grade Gold and Silver Concentrates

    The Merrill-Crowe process for gold and silver recovery yields a low grade concentrate containing high levels of zinc and copper. External refining charges and high transport costs prompted the company

    Jan 1, 1985

  • TMS
    Chemical Enrichment of Precious Metals in Iron Sulfides Using Microwave Energy

    By Bowen Li, Matthew D. Andriese, Jiann-Yang Hwang, Zhiwei Peng

    "Magnetic iron sulfide ore particles heat rapidly by microwave (MW) irradiation generating plasma during oxidation of surfaces. The high temperatures produced by the exothermic event decompose local p

    Jan 1, 2013

  • AUSIMM
    Chemical Environment in Australian Lead-Zinc Flotation Plant Pulps: I. PH, Redox Potentials, and Oxygen Concentrations

    Up to 19 chemical parameters were studied in flotation pulps in six Australian lead-zinc concentrators with the aim of obtaining a better understanding of the nature of, and changes in, the chemical e

    Jan 1, 1970

  • AUSIMM
    Chemical Environment in Australian Lead-Zinc Flotation Plant Pulps: II. Collector Residuals, Metals in Solution, and Other Parameters

    Up to 19 chemical parameters were studied in flotation pulps in six Australian lead-zinc concentrators with the aim of obtaining a better understanding of the nature of, and changes in, the chemical e

    Jan 1, 1970

  • AIME
    Chemical Equilibrium Between Iron, Carbon, And Oxygen

    By Matsubara, A.

    THE problem of the equilibrium between iron, carbon, and oxygen was first carefully investigated by E. Baur and A. Glaessner,1 who determined the equilibrium conditions of the two reactions Fe304 + C

    Jan 2, 1921

  • AIME
    Chemical Equilibrium of Manganese, Carbon, and Phosphorus in the Basic Open-hearth Process

    By C. H. Jr. Herty

    The results of a study of the open-hearth process from the physicochemical view-point are given. This study includes experimentation in small laboratory furnaces and in standard 100-ton furnaces. The

    Jan 2, 1926

  • AIME
    Chemical Examination of Minerals

    By William E. Ford, Edward Salisbury Dana

    Examination in the Wet Way Examination by Means of the Blowpipe 479. The complete investigation of the chemical composition of a .mineral includes, first, the identification of the elements presen

    Jan 1, 1922

  • SME
    Chemical Extraction of Rare Earth Elements from Coal Ash

    By X. Zhu, L. Chen, R. Guru, M. Peiravi, M. Mohanty, L. Ackah, B. Xu

    "The overall goal of this study was to develop a suitable flowsheet to extract rare earth elements (REEs) from coal ash. Only the findings from the first part of this study is being reported at this t

    Jan 1, 2017