Results 91 to 100 of about 39,493 (184)

Analysis of pressure difference changes in respirator filters while dusting [PDF]

, 2018
Objective is to determine the relation between pressure difference of a filter and parameters of a filtering layer to lengthen the protection period.
Cheberiachko, Serhii, Cheberiachko, Yurii, Yavorska, Olena, Yavorskyi, Andrii, Чеберячко, С. И., Чеберячко, С. І., Чеберячко, Сергей Иванович, Чеберячко, Сергій Іванович, Чеберячко, Ю. И., Чеберячко, Ю. І., Чеберячко, Юрий Иванович, Чеберячко, Юрій Іванович, Яворская, Е. А., Яворская, Елена Александровна, Яворский, А. В., Яворский, Андрей Васильевич, Яворська, О. О., Яворська, Олена Олександрівна, Яворський, А. В., Яворський, Андрій Васильович   +19 more
core   +1 more source

Sampling, Mobility, and Anchoring in Small‐Body Sampling Robots: A Comprehensive Review

SmartBot, EarlyView.
Small‐body sampling robots are exploration systems that perform contact, sampling, and stable operations on microgravity bodies such as asteroids and comets. The authors review representative robot architectures and key technologies, focusing on the mechanisms, evolution, and coupling of sampling, mobility, and anchoring.
Yurui Shen, Yixin Zhu, Mingxia Bao, Ting Zhang, Jun Wu, Jingbin Hao, Dezheng Hua, Xinhua Liu   +7 more
wiley   +1 more source

Evacuation of coal from hoppers/silos with low pressure pneumatic blasting systems [PDF]

, 1977
The need for an efficient, economical, effective and quiet device for moving coal and other difficult bulk solids was recognized. Thus came the advent of the low pressure pneumatic blasting system - a very efficient means of using a small amount of plant
Fischer, J. S.
core   +1 more source

Study on wetting and dust suppression characteristics of composite dust suppressant based on enhancement effect of fluorocarbon surfactant

Meikuang Anquan
Fluorocarbon surfactants could change coal structure and improve wettability characteristics, thus, it plays a significant role in coal dust prevention and control.
Chunshan ZHENG, Cancan LI, Bingyou JIANG, Sheng XUE, Xiaohan WANG, Suqian QIAN   +5 more
doaj   +1 more source

Evaluating Plasma Torches as a Low‐Decarburization Preheating Method for MgO–C Refractory Linings

steel research international, EarlyView.
This study evaluates direct current (DC) plasma torches using nitrogen as an alternative preheating method for magnesia‐carbon (MgO–C) refractory‐lined ladles. Full‐scale trials at 0.7 and 1.5 MW are compared to conventional gas burner. Plasma‐heated samples show lower decarburization and improved surface integrity due to partial sintering and reduced ...
Marcus Holmström, Alvaro Rubio Ordoñez, Roberto Caballero Carlon, Björn Glaser   +3 more
wiley   +1 more source

Дослідження сегрегації для розробки техногенних покладів з метою вдосконалення якості продукції [PDF]

, 2018
Виявлено теоретичне підґрунтя ефекту сегрегації при складуванні відходів збагачення з урахуванням високоякісного опису різних фракцій, проведені розрахунки щодо визначення основних параметрів технологічного процесу складування та подальшої ...
Kustov, V., Pchelkin, G., Strilets, O., Кустов, В. В., Пчелкин, Г. Д., Пчелкин, Георгий Дмитриевич, Пчолкін, Г. Д., Пчолкін, Георгій Дмитрович, Стрелец, А. П., Стрелец, Александр Петрович, Стрілець, О. П., Стрілець, Олександр Петрович   +11 more
core  

Research on Debris Characteristics and Wear Mechanism of Gear Material 18CrNiMo7-6 Used in Mining Reducer Under Dust-Contaminated Lubrication

Lubricants
The lubrication of mining reducer is subjected to the contamination of coal rock dust, and this contamination has extremely serious influence on the wear life of reducers.
Xinyu Pang, Yixiang He, Xun Chen, Jiapeng Zhao, Xiting Luo, Kaibo Lv   +5 more
doaj   +1 more source

Dust removal efficiency of high pressure atomization in underground coal mine

International Journal of Mining Science and Technology, 2018
To master theoretical calculation for dust removal efficiency of high pressure atomization in an underground coal mine, the corresponding atomization characteristics and dust removal efficiency were both comprehensively studied in theory by virtue of ...
Pengfei Wang, Xuanhao Tan, Weimin Cheng, Gang Guo, Ronghua Liu   +4 more
doaj   +1 more source

The Application of Hydrochar Composite Briquettes for Sustainable Slag Foaming in the Electric Arc Furnace Process

steel research international, EarlyView.
Hydrochar‐mill‐scale briquettes with varying C/O molar ratios (0.07–0.90) have been tested at 1650 °C to evaluate their slag foaming performance for electric arc furnace application. All seven briquette recipes developed succeed in promoting slag foaming.
Yu‐Chiao Lu, Andrey Karasev, Björn Glaser, Chuan Wang   +3 more
wiley   +1 more source

Moisture movement in bulk stockpiles [PDF]

, 1995
Both drainage and evaporation are possible mechanisms for moisture loss in iron-ore and coal stockpiles. Some simple models are used to study both these mechanisms for various stages of stockpiling.
Fulford, G., McElwain, S.
core