Experimental research of particle size and size dispersity on the explosibility characteristics of coal dust

2016 ◽  
Vol 292 ◽  
pp. 290-297 ◽  
Author(s):  
Qingzhao Li ◽  
Ke Wang ◽  
Yuannan Zheng ◽  
Maliang Ruan ◽  
Xiaoning Mei ◽  
...  
Keyword(s):  
Particle Size ◽  
Experimental Research ◽  
Coal Dust

Experimental Research on the Qualitative Characteristics of Iron Ores and Ferrous Waste That Can Be Used in Blast Furnace Mixt Injection Technology

2019 ◽  
Vol 70 (11) ◽  
pp. 3835-3842
Author(s):  
Mihai Dumitru Tudor ◽  
Mircea Hritac ◽  
Nicolae Constantin ◽  
Mihai Butu ◽  
Valeriu Rucai ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Experimental Research ◽  
Raw Materials ◽  
Coal Dust ◽  
Production Costs ◽  
Iron Ores ◽  
Fine Grained ◽  
Experimental Laboratory ◽  
Injection Technology ◽  
Direct Use

Direct use of iron ores in blast furnaces, without prior sintering leads to a reduction in production costs and energy consumption [1,2]. Fine-grained iron ores and iron oxides from ferrous wastes can be used together with coal dust and limestone in mixed injection technology through the furnace tuyeres. In this paper are presented the results of experimental laboratory investigations for establishing the physic-chemical characteristics of fine materials (iron ore, limestone, pulverized coal) susceptible to be used for mixed injection in blast furnace. [1,4]. The results of the experimental research have shown that all the raw materials analyzed can be used for mixt injection in blast furnace.

Study on explosion suppression of coal dust with different particle size by shell powder and NaHCO3

Fuel ◽  
2021 ◽  
Vol 306 ◽  
pp. 121709
Author(s):  
Xiangrui Wei ◽  
Yansong Zhang ◽  
Guangan Wu ◽  
Xinyan Zhang ◽  
Yaqing Zhang ◽  
...  
Keyword(s):  
Particle Size ◽  
Coal Dust ◽  
Explosion Suppression ◽  
Shell Powder

Influence of particle size polydispersity on coal dust explosibility

2018 ◽  
Vol 56 ◽  
pp. 444-450 ◽  
Author(s):  
Shang-Hao Liu ◽  
Yang-Fan Cheng ◽  
Xiang-Rui Meng ◽  
Hong-Hao Ma ◽  
Shi-Xiang Song ◽  
...  
Keyword(s):  
Particle Size ◽  
Coal Dust

scholarly journals EXPERIMENTAL STUDY OF THE EFFECTS OF COAL DUST PARTICLE SIZE ON LAMINAR BURNING VELOCITY IN A MIXTURE OF COAL DUST AND METHAN

2019 ◽  
Vol 34 (4) ◽  
pp. 47-55
Author(s):  
Hadis Moradi ◽  
◽  
Farhang Sereshki ◽  
Mohammad Ataei ◽  
Mohsen Nazari ◽  
...  
Keyword(s):  
Experimental Study ◽  
Particle Size ◽  
Dust Particle ◽  
Coal Dust ◽  
Burning Velocity ◽  
Laminar Burning Velocity

Experimental Research on Ultrasonic Assisted Pulse Electrochemical Compound Finishing for Hard and Brittle Metal

2010 ◽  
Vol 42 ◽  
pp. 170-174
Author(s):  
Cheng Guang Zhang ◽  
Xue Ling Yang ◽  
Bo Zhao
Keyword(s):  
Particle Size ◽  
Surface Quality ◽  
Experimental Research ◽  
Material Removal Rate ◽  
Vibration Amplitude ◽  
Material Removal ◽  
Removal Rate ◽  
Machining Accuracy ◽  
Ultrasonic Assisted ◽  
Metal Materials

The experiment of ultrasonic assisted pulse electrochemical compound finishing is carried in this paper. The machining principle of the compound finishing is discussed in this paper. Processing experiments of compound finishing are carried out to study the effects of the main processing para- meters, including the particle size, the ultrasonic vibration amplitude, the minimum gap between the tool head and workpiece and the pulse voltage, on the material removal rate and the surface quality for hard and brittle metal materials. The curves of the corresponding relationships are also obtained. The study indicates that the processing velocity, machining accuracy and surface quality can be improved under the compound finishing, obtaining the processing technology conductions of the compound finishing. Introductions

scholarly journals The Analysis of the Possibility of Feeding a Liquid Catalyst to a Coal Dust Channel

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8521
Author(s):  
Zdzisław Bielecki ◽  
Marek Ochowiak ◽  
Sylwia Włodarczak ◽  
Andżelika Krupińska ◽  
Magdalena Matuszak ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Experimental Research ◽  
Lower Energy ◽  
Power Plants ◽  
Large Scale ◽  
Coal Dust ◽  
Exhaust Gases ◽  
Flow Parameters ◽  
Channel Outlet

This article presents the concept of a method of improving the dynamics of combustion in boilers operating in power plants, cogeneration plants, and heating plants by introducing a catalyst that is fed with a carrier in the form of droplets. Thanks to the proposed method, a greater degree of fuel burnout can be obtained, which, in turn, results in lower energy consumption in the case of producing the same amount of power. The parameters of the emitted exhaust gases and ash are also improved. The method described in the article involves the adding of a catalyst to the dust pipe of the boiler, which improves the combustion parameters. The catalyst was implemented using a sprayer/nebulizer. In order to obtain the correct flow parameters, the sprayer was modeled using CFD calculations. The calculations include trajectories, velocities and concentrations with regards to various flow parameters. Particular attention should be paid to the model of the evaporation of moving droplets. The results of these calculations enable the parameters that guarantee that the catalyst reaches the dust channel outlet in the desired form to be assessed. The analysis is an introduction to experimental research that is carried out on a medium and large scale.

scholarly journals Experimental Research on Optimization and Coal Dust Suppression Performance of Magnetized Surfactant Solution

2011 ◽  
Vol 26 ◽  
pp. 1314-1321 ◽  
Author(s):  
Ding Cui ◽  
Nie Baisheng ◽  
Yang Hua ◽  
Dai Linchao ◽  
Zhao Caihong ◽  
...  
Keyword(s):  
Experimental Research ◽  
Coal Dust ◽  
Surfactant Solution ◽  
Dust Suppression

Experimental research on flame spectra of methane-coal dust explosions

1988 ◽  
Vol 4 (4) ◽  
pp. 378-386
Author(s):  
Li Hongde ◽  
Liu Yuzheng ◽  
Liao Jiqing ◽  
Xia Zizhu ◽  
Li Shizhan
Keyword(s):  
Experimental Research ◽  
Coal Dust ◽  
Dust Explosions
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