ERE - 2011http://dl.lib.uom.lk/handle/123/182912024-03-29T05:16:40Z2024-03-29T05:16:40ZProceedings of 6th National Conference on Minerals and Innovative Thinking [Pre Text]http://dl.lib.uom.lk/handle/123/184212022-10-17T08:44:22Z2011-11-01T00:00:00ZProceedings of 6th National Conference on Minerals and Innovative Thinking [Pre Text]
Ratnayake, NP; Abeysinghe, AMKB
2011-11-01T00:00:00ZDesign of a gravity wheel for mineral transport and power generationPremalal, DADTRKarunanayake, WAPCKodikara, NERazmy, SAMDissanayake, DMDOKhttp://dl.lib.uom.lk/handle/123/184202022-10-18T03:39:29Z2011-11-01T00:00:00ZDesign of a gravity wheel for mineral transport and power generation
Premalal, DADTR; Karunanayake, WAPC; Kodikara, NE; Razmy, SAM; Dissanayake, DMDOK
Ratnayake, NP; Abeysinghe, AMKB
The energy needs of the world Mining Industry show an exponentially increasing
trend owing to greater demand. The best available reports speculate that our present oil reserves will last for 40
years at most; therefore, efforts worldwide are directed towards identifying
and utilizing new energy sources. Renewable energy development receives
high priority among them. However, investing in new technology developments
for renewable energy is time and money consuming.
The main objective of the study was to adopt the Gravity Wheel concept
based on the parameters given in the BuzzSaw Gravity Wheel Design of 1909,
in order to develop a working model for mineral transport and power
generation. The SolidWorks CAD software was used for motion study.
Mathematical modelling was in favour of the continuous motion of the Gravity
Wheel design. The design promises to have significant economical benefits
for the mining industry. Additional benefits are also apparent for the
off-grid power generation industry as well.
2011-11-01T00:00:00ZIdentifying phlogopite mica mineralization in the area around Rathnapura and suggesting suitable mining methods for sustainable exploitationSashikala, JRMNishshanka, NACKarunarathna, AWKNAnuradha, HWLWeerawarnakula, SAbeysinghe, AMKBhttp://dl.lib.uom.lk/handle/123/184192022-10-18T03:49:04Z2011-11-01T00:00:00ZIdentifying phlogopite mica mineralization in the area around Rathnapura and suggesting suitable mining methods for sustainable exploitation
Sashikala, JRM; Nishshanka, NAC; Karunarathna, AWKN; Anuradha, HWL; Weerawarnakula, S; Abeysinghe, AMKB
Ratnayake, NP; Abeysinghe, AMKB
Investigation carried out in the area around Rathnapura shows
occurrence of economically valuable phlogopite mica mineralization in the area. Such
deposits are concentrated in Hindurangala, Palkumbura, Pathagammana,
Yakodiyadeniya, Thambandeniya and Kosgala. Although historical data show
systematic underground mining has been carried out in some places, present mining
activities are restricted to very small scale pits dug haphazardly. Vein thickness of the
phlogopite mica varies from 2 cm - 1 m and extends in N 35°- 50° W direction. They
generally follow the foliation pattern of the metamorphic country rocks and three major
mineralization zones extending over 10 km have been found in the area. In some
locations veins follow joint directions of the area. Variation in physical properties such as
colour, expansion and permanent colour changes due to heat are found in the same
mineralized zone in different locations.
2011-11-01T00:00:00ZDesigning and fabrication of a low cost magnetic separator for beach sand separationHettiwatte, MCSiyanath, HANAmalan, KRohitha, LPShttp://dl.lib.uom.lk/handle/123/184182022-10-18T04:15:55Z2011-01-01T00:00:00ZDesigning and fabrication of a low cost magnetic separator for beach sand separation
Hettiwatte, MC; Siyanath, HAN; Amalan, K; Rohitha, LPS
Ratnayake, NP; Abeysinghe, AMKB
The heavy mineral deposits of Sri Lanka are widely spread over the
coastal area. The mining industry is looking forward for an effective method for
heavy mineral separation with the low cost equipments, which suit the local
environment requirements to reduce the overheads. The major deposit at
Pulmoddai, Trincomalee is a well known Ulmenite deposit in Sri Lanka. The state
company is currently engaged in processing using imported separators, specifically
magnetic separators for ore dressing. But they are expensive and also difficult in
operating, due to their outdated mechanism. In this context, the research project was
launched to design and fabricate a low cost magnetic separator for beach sand
separation. Through literature studies, an effort was made to add new features with
innovative ideas to suit the purpose of the design. A prototype was fabricated in
laboratory scale. The model was fabricated with a low cost in the laboratory is light
weight, more portable, easier to assemble & dismantle. Future modifications are also
possible with variable parameters. The separator was optimized for beach sand
separation.
2011-01-01T00:00:00Z