Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Olli Dahl"'
Publikováno v:
Minerals, Vol 13, Iss 9, p 1230 (2023)
Blending of different ore types in the concentrator feed contributes significantly to maintaining a high recovery of valuable minerals with required grades in the concentrate. It is feasible to develop an ore-blending scheme over the life of a mine a
Externí odkaz:
https://doaj.org/article/e1b7ee1dca7048e791f10a74aa1369ca
Publikováno v:
Journal of Ecological Engineering, Vol 22, Iss 5, Pp 47-58 (2021)
In this study, the physical and chemical properties of untreated, lime-stabilized and composted wastewater sludges from a Finnish pulp, board and paper mill integrate were compared in order to assess their fertilizer properties based on the requireme
Externí odkaz:
https://doaj.org/article/8676f281894a4fdc91d1be3ab65cafef
Autor:
Annukka Aaltonen, Thi Minh Khanh Le, Eija Saari, Olli Dahl, Benjamin Musuku, Aleksandra Lang, Sakari Hiidenheimo, Richard Dixon
Publikováno v:
Minerals, Vol 13, Iss 3, p 319 (2023)
The pressure for saving water by closing the water loops in mineral processing is increasing continuously. The drivers for higher recirculating rates include water scarcity in dry areas, environmental legislation that is becoming stricter in most cou
Externí odkaz:
https://doaj.org/article/98f031df0bfb436b9012b9c5adda6aaf
Publikováno v:
Minerals, Vol 13, Iss 2, p 277 (2023)
Earlier studies at the Kevitsa Cu-Ni concentrator plant have indicated that seasonal variations of the properties of the process water affect the oxidation of the surface of the minerals, and further, the pentlandite flotation performance. However, i
Externí odkaz:
https://doaj.org/article/59059d197d1a4c4d80334c5956571f66
Autor:
Stefano Caro, Olli Dahl
Publikováno v:
Cleaner Engineering and Technology, Vol 4, Iss , Pp 100181- (2021)
The efficient and sustainable disposal of waste represents one of the major challenges for the human beings in the next future. The thermochemical conversion of livestock manure to biochar has received much interest thanks to its greenhouse gases ext
Externí odkaz:
https://doaj.org/article/aed8904adc9441919144c301e37c132e
Autor:
Benjamin Musuku, Olli Dahl
Publikováno v:
Minerals, Vol 12, Iss 11, p 1455 (2022)
The Kevitsa Cu–Ni sequential flotation process is characterised by poor nickel recovery during summer periods (May–September). Evidently, the process water matrix in summer is different from that in other seasons; however, the Cu flotation perfor
Externí odkaz:
https://doaj.org/article/1db008ad8c3c477ea4ce9c5d1ee19615
Publikováno v:
Minerals, Vol 12, Iss 11, p 1406 (2022)
This paper investigated the effect of mineral surface oxidation on the floatability of Kevitsa low-grade Ni-Cu ore. Physicochemical measurements, ethylene diamine tetra acetic acid (EDTA) extraction, and oxygen uptake experiments were carried out wit
Externí odkaz:
https://doaj.org/article/cfe183f1a97c43828691391fefc44939
Publikováno v:
MethodsX, Vol 7, Iss , Pp 101066- (2020)
The main challenge for implementing an industrial-scale membrane distillation (MD) system is its associated thermal power demand and resulting operational cost, which hinders the commercialization of the technology, even after forty years of its evol
Externí odkaz:
https://doaj.org/article/87114e430f714ab0b73687bc422b03c9
Publikováno v:
Minerals, Vol 10, Iss 11, p 940 (2020)
The changes in water quality owing to recirculation of water in mineral processing plants can compromise the plant performance as well as maintenance needs. Therefore, mining process water quality assessment is becoming critical. Nevertheless, very f
Externí odkaz:
https://doaj.org/article/07602e6b63cb45dd8a7855a44eb9a08d
Autor:
Kari Mikael Vanhatalo, Natalia Maximova, Anna-Maija Perander, Leena-Sisko Johansson, Eero Haimi, Olli Dahl
Publikováno v:
BioResources, Vol 11, Iss 2, Pp 4037-4054 (2016)
Three microcrystalline cellulose (MCC) samples were manufactured from bleached and unbleached softwood kraft pulp, and their properties were compared to those of the commercial MCC, Avicel PH-101. One of the produced samples retained a large portion
Externí odkaz:
https://doaj.org/article/c3ecc476a32847f8a61c29b03729ef2c