Sökning: "boliden"
Visar resultat 21 - 25 av 137 uppsatser innehållade ordet boliden.
21. EXAMINATION OF MICRO-SCALE SULFIDE DISTRIBUTION FOR THE GOLD MINERALIZATION IN THE LAPPBERGET DEPOSIT, GARPENBERG MINE, SWEDEN: TOWARDS A GEOMETALLURGICAL APPROACH
Master-uppsats, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserSammanfattning : Ore characterization studies are of great importance to the mining industry, especially when dealing with precious metals by-products. It is a way towards increasing mining efficiency. LÄS MER
22. A bonded discrete element approach to simulate loading with hydraulic mining excavators
Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematikSammanfattning : When operating hydraulic mining excavators the loading equipment is exposed to harsh conditions which lead to extensive wear of the equipment, especially the bucket and bucket teeth. Simulations are used to better understand the wear development and to evaluate new methods to operate excavators more efficiently. LÄS MER
23. A process mineralogy study of grinding characteristics for the polymetallic orebody, Lappberget Garpenberg
Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserSammanfattning : Most of the high-grade ores have been depleted globally, thus the effective processing of the low-grade and complex ores require a comprehensive mineral characterization through the process mineralogy/ geometallurgical approaches. 30-70 % of the total energy consumption in mining comes from the comminution step in mineral processing. LÄS MER
24. Installation av rör- och värmeväxlarsystem för spillvärmeåtervinning vid Boliden Rönnskär
Uppsats för yrkesexamina på grundnivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematikSammanfattning : Rönnskärsverken in Skelleftehamn is a smeltery owned by Boliden. Rönnskär receives raw materials from Boliden´s mines and electronic materials. The metals that are mined at Rönnskär are mainly copper, lead and zinc, as well the precious metals silver and gold, where copper is the largest volume of the metal production. LÄS MER
25. Geochemical tracing of Arsenic sources in groundwater at the remediated Storliden mine, Skellefte district
Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserSammanfattning : The Swedish mining industry has changed from the historical situation with several smaller mines to the present situation with a few, bigger mines. This results in presence of abandoned mines around Sweden. Remediation of mines is regulated by legislation and the present demands are considerably higher than it was some decades ago. LÄS MER