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  • SME
    Column Flotation For Fine Coal Recovery In India - A Techno Economic Assessment

    By K. P. Madhusudhanan, R. K. Bhatia, K. S. Narasimhan, R. N. Singh

    A typical case study of a coal washery of capacity 500 t/h raw coal input has been presented and discussed with particular reference to the techno-economics for flotation column vis-a-vis the conventi

    Jan 1, 1988

  • SME
    Geometric and Physico-chemical Properties Determining Sulfide Oxidation Rates in Waste Rock Dumps

    By Alan M. Ritchie, Paul Miskelly

    The 2-D code FIDHELM has been used to simulate conditions in piles of pyritic material with vertical dimensions of 20 to 70 m and a horizontal dimension of 500m. Those properties of the pile and its e

    Jan 1, 2000

  • SME
    Case Study Of Longwall Mining Effects On Water Wells

    By M. A. Trevits, R. J. Matetic

    Mining operations have long been accused of causing a disruption to local, domestic and agricultural water supplies. More recently, concern for water supplies has increased with the advent of high-ext

    Jan 1, 1993

  • SME
    Control System For Mine Ventilation

    By Alexander Filimonov, Yury Bloshteyn

    Ventilation of gas mines keeps necessary sanitation and hygienic conditions for labor in mines and increases the safety by dilution and removal of hazardous and dangerous gases in accordance with the

    Jan 1, 1991

  • SME
    Fine Grinding of Coal in a Two-Stage High-Pressure Roll Mill/Ball Mill Hybrid Mode

    By A. De Daio, D. W. Fuerstenau, P. C. Kapur

    Because of its pronounced tendency to undergo visco-plastic flow, coal ground in the energy- efficient high-pressure roll mill invariably comes out as a briquetted product which must be disintegrated

    Jan 1, 1995

  • SME
    Unconventional Mining-New Generation Of Mining Technology Of The XXIst Century

    By Y. F. Vasyuchkov

    In general a term "unconventional mining or "non-traditional mining technology" getting more and more familiar to the mining engineering media. There are several alternating terminological combination

    Jan 1, 1997

  • SME
    An overview of the Prairie Creek diamond- bearing intrusion, Arkansas

    By S. L. Bolivar

    The Prairie Creek intrusion, near Murfreesboro, AR, is the site of the most famous diamond mine in North America. Three major rock types are associated with the intrusion-a hypabyssal peridotite, a vo

    Jan 1, 1987

  • SME
    Constrained Interpolation and Soft Kriging

    By A. G. Journel

    The indicator random function formalism allows a common coding of hard numerical data, constraint intervals, and soft qualitative information as prior probability distributions. The soft kriging algor

    Jan 1, 1986

  • SME
    Selection of drying and calcining systems - an overview

    By C. R. Euston, B. T. Field, W. E. Lindquist

    Pyroprocessing applications in the minerals industry range from low-temperature drying to high-temperature reactions. Material characteristics and process requirements range over a very broad spectrum

    Jan 1, 2000

  • SME
    Estimating Rippability by Rock Mass Classification

    By Hardy J. Smith

    The rock mass parameters which need be evaluated to estimate the rippability of rock are briefly outlined and their significance is discussed. Several methods used for estimating rippability are compa

    Jan 1, 1986

  • SME
    Drive and Brake Control Considerations When Using Fluid Couplings on Regenerative Conveyors

    By Derek G. Cieplinski

    Regenerative conveyors with complex conveyor profiles place unusually stringent demands on the starting drive control. Depending on the nature of the conveyor loading, the drive must either provide a

    Jan 1, 1993

  • SME
    A Nonlinear Rheological Model for Time-dependent Behavior of Geologic Materials

    By H. Reginald Hardy, Xiaoqing Sun

    Rheological models are widely accepted as a means of describing the mechanical behavior of geologic materials. It has been found, however, that rheological models developed for a specific stress level

    Jan 1, 1986

  • SME
    Surface Complexation Of Calcium Minerals In Aqueous Solution 2. The Complexation Of Alizarin Red S At Fluorapatite- Water Interface

    By Liuming Wu, Willis Forsling

    The complexation of Alizarin Red S (ARS) at the surface of hydrous fluorapatite particles has been investigated at 25.0 C by means of potentiometric titrations, adsorption experiments in 0.1 M NaCI io

    Jan 1, 1993

  • SME
    Effect of ball mill size on media wear

    By J. J. Moore, I. Iwasaki, L. A. Lindeke

    Correlation of scale-up from small-scale batch laboratory mills to large-diameter industrial mills was established by performing two series of laboratory and pilot plant grinding tests using a magneti

    Jan 1, 1988

  • SME
    Classification effects in wet ball milling circuits

    The concept of classification in wet, closed circuit ball milling is expanded beyond the performance of the classifying equipment to include all aspects of the fines removal system of the grinding cir

    Jan 1, 1987

  • SME
    Purpose and Terminology

    By W. E. Horst

    Raw materials and mineral products are crushed, ground, or pulverized for a variety of reasons. Some of the most important reasons for size reduction are: to liberate marketable mineral species from a

    Jan 1, 1985

  • SME
    Paste Tailings Management Alternative-Study Results For Molycorp’s Lanthanide Group Operations In Mountain Pass, California

    By J. M. Johnson, J. Vialpando, C. Lee

    Since 1951, Molycorp has operated the Mountain Pass Mine in San Bernardino County, California to extract fourteen lanthanide elements, or rare earths, from a carbonate ore body. Wastes generated by t

    Jan 1, 2004

  • SME
    Minefill Applications, Practices and Trends in Canadian Mines

    By D. DeGagné, E. De Souza, J. F. Archibald

    A comprehensive survey of minefill practices in underground mines in Canada has been conducted. The survey was designed to cover the entire filling operation for individual mines from feed to the prep

    Jan 1, 2001

  • SME
    Development and Utilization of Innovative Tunnelling Techniques -Some of Which Have Been Developed from Those in Use with Large Diameter Tunnel Machines

    By Ing. E. h. Martin Herrenknecht

    The paper will describe a number of developments and innovations now in use in microtunnelling machines. These include the use of fuzzy logic steering systems, the proven ability to successfully under

    Jan 1, 1999

  • SME
    An Analysis of the Data Obtained From Ventilation Studies of Longwall Panels

    By Brian S. Prosser, Ian J. Duckworth

    With the trend in the coal mining industry pushing towards improved productivity and greater production, the number and size of longwall panels is increasing rapidly. The development and mining of lar

    Jan 1, 1997