Browsing by Subject "pelletization"

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Access status: Open Access ,
Badania mułów węglowych i odpadów niemineralnych w zakresie możliwości otrzymania paliw
(Wydawnictwa AGH, 2005) Kuczyńska, Iwona
Alternative fuels are becoming more and more popular due to the depletion of power resources, high cost of usage and growing awareness of the threats posed to natural environment. This paper introduces results of preliminary tests on obtaining fuel from waste, which also proves to be an effective method of waste utilization based on mixing carbon loam with non-mineral waste, by pelletization. The granulated product received in this way could become an alternative fuel in power engineering, heat engineering, cement kilns or domestic fire. The research proves also that granulates of the highest quality are those created from mixing carbon loam with wooden, tobacco and tanning dust.
Access status: Open Access ,
Innovative solution of coal slurry mixer
(Wydawnictwa AGH, 2017) Feliks, Jacek
During the coal-enrichment process in mechanical processing plants, fine-grained highmoisture coal slurries are produced. These waste products may be used in energetic blends after a special moisture-reducing treatment. Therefore, coal slurry pelletizers are produced (among other things). In the Department of Mining, Dressing, and Transport Machines, a project of a prototypical installation for coal slurry pelletization with a capacity of 50 Mg/h was constructed. The main part of the installation is the mixer. At its bottom part, an opening is placed that is closed by a metal plate. During the pelletization work, a plate is halfopening and rotates around its own axis. The rotation of the drum and agitators installed inside the mixer causes sludge grinding and its homogenization. A properly working drum closure system is important for the proper exploitation of the mixer. The designed mechanism allows us to lower the plate linearly in the first phase and then turn it with a predetermined angle after the complete removal of material from the drum. The project required an examination of the kinematics of the system and determination of the drive system load, which allowed us to designate the working parameters. This paper presents the course of the taken actions and results of the fundamental research, along with their analysis. A selection of optimum design and exploitation parameters was performed on the basis of the graphical synthesis method, created simulation model, and tests of the prototype device.