Results 41 to 50 of about 473,613 (309)

Discrete element method simulations of load behavior with mono-sized iron ore particles in a ball mill

open access: yesAdvances in Mechanical Engineering, 2017
Aiming at addressing the load behavior of iron ore particles in a ball mill, a design of experimental method was used to define a series of discrete element method simulation conditions with two factors being the mill speed and lifter height.
Yuxing Peng   +4 more
doaj   +1 more source

Innovative Processing of Compacted Waste Aluminum Alloy Powders via Controlled Remelting and Solidification

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira   +4 more
wiley   +1 more source

Numerical analysis of dynamic behavior of falling rock block impact against soil-rock mixture by coupling DEM-FDM approach

open access: yesScientific Reports
Rockfall, as a common geological hazard, exhibits extremely complex impact dynamic behaviors that are significantly influenced by factors like the impact falling height and the composition of soil layers.
Yulong Zhang   +5 more
doaj   +1 more source

Research on Image Detection of Thin-Vein Precious Metal Ores and Rocks Based on Improved YOLOv8n

open access: yesApplied Sciences
To address the high-dilution issues arising from efficient mining methods such as medium-deep drilling for underground thin veins of precious metals, detecting raw rock fragments after blasting for subsequent sorting has become a cutting-edge research ...
Heyan Zhou   +4 more
doaj   +1 more source

Numerical Analysis on Non-Uniform Thrust System in EPB Shield Machine Applied in Beijing Metro Line 6

open access: yesIEEE Access, 2019
This paper is to investigate the mechanical characteristics of non-equidistant thrust system in an EPB shield machine with a diameter of 6.15 m applied in Beijing Metro Line 6 construction.
Kongshu Deng   +3 more
doaj   +1 more source

Application of Raman and Photoluminescence Spectroscopy to MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
Visible to near infrared luminescence of MgO is studied on MgO‐C bricks and nominally pure MgO powder, with focus on two similar sharp high‐intensity signals, at 699 and 871 nm, each surrounded by symmetrical sidebands. The nature of these sidebands is investigated by temperature‐dependent spectroscopic measurements, confirming phonon involvement by ...
Julia Richter   +5 more
wiley   +1 more source

An Intelligent Joint Identification Method and Calculation of Joint Attitudes in Underground Mines Based on Smartphone Image Acquisition

open access: yesSensors
Acquisition of joint attitudes is vital in mine geology but often constrained by underground conditions, while manual cataloging remains inefficient and subjective.
Guang Li   +4 more
doaj   +1 more source

Concept, realization path and key technologies of intelligent mining based on transparent longwall face

open access: yesGong-kuang zidonghua, 2020
Taking transparent coal seam, transparent fully-mechanized mining equipment and transparent decision-making and control as core, concept of intelligent mining based on transparent longwall face was put forward, namely based on enhanced geological ...
WANG Feng
doaj   +1 more source

Injuries, Illnesses, and Fatal Injuries in Mining in 2010 [PDF]

open access: yes, 2013
[Excerpt] Workers in the mining industry continue to face a higher risk of fatal injury than average American workers. Although the rate of nonfatal injuries and illnesses in mining is less than the average reported for private industry, these injuries ...
Smith, Sean
core   +1 more source

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

open access: yesAdvanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner   +4 more
wiley   +1 more source

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