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Elutriation-Flotation For Recycling Of Plastics From Municipal Solid Wastes
By C. E. Jordan
The Bureau of Mines investigated a simultaneous elutriation and flotation technique for separating polyethylene terephthalate (PET) from polyvinylchloride (PVC). The Tuscaloosa Research Center, throug
Jan 1, 1992
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Separation of Dolomite from Phosphate by Laser-Induced Time-Resolved Luminescence Sorting
By M. Gaft, G. Panczer
Sedimentary francolite and magmatic apatite are characterized by specific laser-induced time- resolved luminescence, which allows phosphate to be distinguished from accompanying dolomite. The "selecti
Jan 1, 1999
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Cobalt Recovery From Copper Solvent Extraction Raffinate Using Ion Exchange Resins
By M. Rodgers
Dow Water & Process Solutions (DW&PS) was approached by ASARCO Inc. to attempt to recover cobalt and copper from their copper solvent extraction (SX) raffinate. Cobalt is added to many copper electrow
Jan 1, 2010
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AFM Pull-off Force Measurements with Polystyrene (Deformable) Colloidal Probes
By Elvin R. Beach, Jaroslaw Drelich
Pull-off forces were measured for 8-9 pm diameter polystyrene (PSI particles on smooth spin- coated polystyrene films and hexadecanethiol (HDT) self-assemble monolayer surfaces using atomic force micr
Jan 1, 2003
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The Use Of Dialkyldithiophosphinates In Sulfide Flotation ? Introduction
By S. S. Wang
Dialkyldithiophosphinates are a new class of flotation collectors for base metal sulfide ores. Structurally, they are quite different from the conventional collectors such as mercaptans, xanthates, th
Jan 1, 1982
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CMAR Delivery Method on the Lake Mead Intake No. 3 Low Lake Level Pumping Station - Early Stages of Success
By Jordan Hoover, Erika Moonin, Chuck George
"In response to a severe regional drought and in preparation for the further decline of water levels in Southern Nevada’s Lake Mead, the Southern Nevada Water Authority (SNWA) built a new intake syste
Jan 1, 2016
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A Mine Fire Recovery
By J. E. Urosek
In October, 1990, a fire started in a large underground coal mine in Western Pennsylvania. During fire-fighting activities, an explosion occurred and all personnel were evacuated. Safe re-entry into t
Jan 1, 1993
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Metallurgical Accounting at Gold Field's Chimney Creek Mine
By James R. Arnold, John O. Marsden
Introduction Metallurgical accounting practices have been revolutionized over the past 15 years by the introduction of low cost personal computers and easy- to-use spreadsheet software. The Chimney Cr
Jan 1, 1990
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Erratic Highs -- A Perennial Problem In Resource Estimation
Most statistical and geostatistical methods of re-source and reserve estimation work extremely well for Normal (Gaussian) well-behaved information. However, most interesting mineral deposits exhibit f
Jan 1, 2000
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A study of total dynamic analysis method for deepseabed integrated mining system
By Hyung-woo Kim, Sup Hong, Sung-Soo Kim, Chang-Ho Lee
A deep-seabed integrated mining system, which consists of four subsystems such as riser pipe, buffer, flexible riser, and tracked vehicles, is presented in Figure 1. In order to collect more manganese
Sep 1, 2014
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Pump Phase Shift Control in the World’s Largest Iron Ore Concentrate Pipeline
By Ralph van Rijswick, Erik Vlot
"Anglo American operates 18 Weir GEHO piston diaphragm pumps (PD) in the two pump stations of the 52-km (32-mile) long Minas Rio iron ore concentrate pipeline. The pipeline is designed to transport 26
Jan 9, 2017
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A New Method for Intuitively Reflecting the Deterioration Characteristics of the Rock Surrounding Roadways and Its Application Based on the Strain Softening Model
By Jin Dai, Xianwen Geng, Hao Liu, Pu Wang
To investigate how deformation failure occurs in roadways surrounding rock, the relationship between cohesion and plastic shear strain of the strain softening model and the equation for calculating th
Jan 16, 2022
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NATM/SEM Analyses for San Francisco?s Transbay Extension Tunnel
By Steve Klein
The Transbay Downtown Extension (DTX) in San Francisco involves the construction of a large-span tunnel with a width ranging from 43 to over 60 feet. The tunnel will be excavated using the New Austria
Jan 1, 2008
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A Review Of Subsidence Prediction Research Conducted At Sandia National Laboratories
By H. J. Sutherland
This paper reviews the results of the subsidence research prop ram at Sandia National Laboratories. The manuscript highlights the following: the application of empirical methods (profile functions) to
Jan 1, 1982
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Conversion of the Cortez Gold Mining CCD circuit to CIL
By A. L. Crandell
History The Cortez Mining District has a long history of mining activity dating back to 1862. More recently, Cortez Gold Mines had operated a cyanide leach, counter current decantation (CCD) recovery
Jan 9, 1986
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Production of Chalcocite by Selective Chlorination of Chalcopyrite Using Cuprous Chloride
By J. Y. Lee, J. Kang
"A selective chlorination process using cuprous chloride (CuCl) was investigated for producing high-grade chalcocite (Cu2S) from chalcopyrite (CuFeS2) feed. The chalcopyrite feed was reacted with CuCl
Jan 1, 2017
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Cutter Roof And Its Causes
By Wen H. Su
This paper examines the intrinsic mechanisms of cutter roof by combining field investigation, laboratory testings, underground instrumentations, and numerical modelling. Cutter roof developed during t
Jan 1, 1985
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Some MINExpo Exhibitors Previewed
Bortech’s BoreClad corrosion protection system will be displayed at MINExpo. BoreClad is an innovative system for inside diameter cladding of nozzles, tubes and other circumferential devices. Pressu
Jan 1, 2004
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bauma ’04 Attracts More Than 410,000 Visitors
More than 410,000 visitors from 171 countries helped bauma ’04 set new attendance records at the world’s largest construction machinery and mining technology show. The show, held in Munich, Germany M
Jan 1, 2004
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State Of The Art Of Big Hole Drilling
By Paul Richardson
This paper will review several projects completed during the period from 1976 through 1984 which have been carried out utilizing big hole drilling concepts. The projects discussed will be from various
Jan 1, 1985