Search Documents
Search Again
Search Again
Refine Search
Refine Search
- Relevance
- Most Recent
- Alphabetically
Sort by
- Relevance
- Most Recent
- Alphabetically
-
Effects of Temperature and pH on Pressure Filtration of Coal Refuse Slurry Mining, Metallurgy and Exploration (08bb591f-8b35-4c27-9be5-b591d55e4b86)By G. S. S. Raman, M. S. Klima
Coal refuse slurries stored in tailings impoundments can potentially lead to environmental concerns such as effluent seepage, property devaluation, and in extreme cases, dam failures. Pressure filtrat
-
Effects of Temperature and pH on Pressure Filtration of Coal Refuse SlurryBy G. S. S. Raman, M. S. Klima
Coal refuse slurries stored in tailings impoundments can potentially lead to environmental concerns such as effluent seepage, property devaluation, and in extreme cases, dam failures. Pressure filtrat
Jun 17, 2019
-
Effects Of Temperature And Precursors On Preparation Of Fe-Tic Composite From IlmeniteBy Sutham Niyomwas
The Fe-TiC composite powder was synthesized in situ by carbothermal reduction of ilmenite. The standard Gibbs energy minimization method was used to calculate the equilibrium composition of the reacti
Jan 1, 2006
-
Effects of Temperature of Pretreatment on Creep Characteristics of 18-8 Stainless Steel at 600° to 800°C.By Charles Austin
IN an earlier series of studies on 18-8 stainless steel at 600°, 700°, and 800°C.1 one pretreatment was used throughout; viz., 15 min. in hydrogen at 950°C., followed by an air quench. Several manufac
Jan 1, 1940
-
Effects of the Mixed Surfactants on Detoxification of Chromium-containing Slag by Achromobacter sp. CH-1By Lijuan Chen
During the detoxification of chromium-containing slag by Achromobacter sp. CH-1, anionic surfactant Sodium Dodecyl Sulphate(SDS) and its mixed systems with different Tween surfactants(Tween 20, Tween
Jan 1, 2009
-
Effects of the Type of Water on the Selective Flotation of Pyrochlore from NiobecBy E. Esponosa-Gomez, J. A. Finch, A. R. Laplante
"Water quality plays an important role in oxide flotation. The effects on selective flotation of fine (1-16 um) pyrochlore of two types of water used at the Niobec concentrator, potable and plant recy
Jan 1, 1986
-
Effects of Topography on air overpressure from quarry blasting - a case studyBy W. J. Birch, L. Bermingham
Air overpressure is becoming an increasingly problematic issue within the quarrying industry. With blasting operations moving ever closer to residential properties, the number of complaints about air
Jan 1, 2013
-
Effects of Transverse Isotropy on Vertical Stresses When Multi?Seam Mining under Supercritical Longwall PanelsBy Anastasia M. Suchowerska
The design of effective ground support requires a sound understanding of the pre-mining state of stress in the stratum to be mined. Irregularities in the stress field encountered during multiseam mini
Jan 1, 2012
-
Effects of two parallel fractures with nonlinear deformational behavior on one-dimensional P-wave propagationBy X. B. Zhao, J. G. Cai
When stress wave propagates through fractured rock masses, the wave will be slowed and attenuated due to the presence of these fractures. If the amplitude of stress wave is large enough to mobilize no
Jan 1, 2003
-
Effects of Ultrasound on Al2O3 Extraction Rate during Acid Leaching Process of Coal Fly AshBy Wenbo Luo, Kang Liu, Jilai Xue
"Coal fly-ash(CFA) from thermal power plants is rich in Al2O3, which has great potential as an alternative resource for alumina production. In this work, Alz03 contained in the coal fly-ash was extrac
Jan 1, 2014
-
Effects of Ultrasound on the Removal of Humic Acids with the Preformed Aluminium Hydroxide FlocsBy B. C. Qi
"In water treatment, flocculation or coagulation with aluminium or ferric salts has been widely used for many years to remove natural organic matter (NOM), including humic acids. However, the adsorpti
Jan 1, 2003
-
Effects of ventilation and gob characteristics on spontaneous heating in longwall gob areasBy L. Yuan
In the U.S. coal mining industry, most spontaneous combustion fires occur in longwall or worked-out gob areas. In order to reduce the fire hazard caused by spontaneous combustion, it is important to u
Jan 1, 2009
-
Effects of Water Quality on Performance of Bentonite Binders in Iron Ore PelletizationBy S. K. Kawatra, S. J. Ripke, T. C. Eisele
"An estimated 600,000 tons of bentonite clay are used annually in the U. S. as binder for production of iron ore concentrate pellets. Since this is a significant cost item for the plants, and the addi
Jan 1, 2003
-
Effects Of Water Sprays And Scrubber Exhaust On Face Methane ConcentrationsBy Ch. D. Taylor
Past studies with blowing face ventilation systems have shown that using a machine-mounted scrubber and water sprays can reduced methane levels at the face. The current research was conducted to dete
-
Effects Of Water Sprays Used With A Machine-Mounted Scrubber On Face Methane ConcentrationsThis study was conducted to determine the effects of a machine-mounted scrubber and water sprays on face methane levels. Testing was conducted in the NIOSH ventilation test gallery which was designed
-
Effects Of Water Sprays Used With A Machine-Mounted Scrubber On Face Methane ConcentrationsThis study was conducted to determine the effects of a machine-mounted scrubber and water sprays on face methane levels. Testing was conducted in the NIOSH ventilation test gallery which was designed
Jan 1, 2001
-
Effects Of Weak Bands On Pillar Stability In Stone Mines: Field Observations And Numerical Model AssessmentBy John L. Ellenberger, Gabriel S. Esterhuizen
Observations of pillar conditions in limestone mines showed that the presence of weak bands in the limestone can result in pillar damage at stresses that are lower than one would otherwise expect. The
-
Effects of Weak Bands on Pillar Stability in Stone Mines: Field Observations and Numerical Model AssessmentBy Gabriel Esterhuizen
Observations of pillar conditions in limestone mines showed that the presence of weak bands in the limestone can result in pillar damage at stresses that are lower than one would otherwise expect. Th
Jan 1, 2007
-
Effervescence During Desulfurization Of Copper MeltsBy R. Harris
Blister copper melts of 800 g to 1000 g containing less than 1 wt % S and up to 3 wt % Ni were desulfurized at 1523 K in air or by a pure oxygen jet blown at 75,500 and 1000 cm3/min, from 1 cm above t
Jan 1, 1999
-
Efficacy and Execution of Floating Lattice-Shaped Cement Treatment against LiquefactionBy Sachihiko Tokunaga, Hirofumi Taguchi, Kenji Maruyama, Hidenori Takahashi, Yoshiyuki Morikawa
"Abstract The present study proposed a new liquefaction countermeasure to improve sandy ground and conducted a trial execution. The new method is a floating-type and lattice-shaped cement treatment me
Jan 1, 2014