Sökning: "Nils-Johan Bolin"

Hittade 2 avhandlingar innehållade orden Nils-Johan Bolin.

  1. 1. Flotation : en studie i några förutsättningar för selektiv flotation

    Författare :Nils Johan Bolin; Luleå tekniska universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mineral Processing; Mineralteknik;

    Sammanfattning : The zeta potential for oxide- and silicate minerals has been measured in different pulp liquids and a comparison has been made concerning the results of the flotation. The results show that the surface charge of the mineral particles reflect the condition of the dispersion of the pulp, and guiding the surface charge is a way of increasing the selectivity when concentrating by flotation. LÄS MER

  2. 2. Sampling from large flotation cells : An invastigation of spatial distribution

    Författare :Lisa Malm; Jan Rosenkranz; Tommy Karlkvist; Anders Sand; Nils-Johan Bolin; Pertti Lamberg; Luleå tekniska universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ENGINEERING AND TECHNOLOGY; Flotation; sampling; Mineral Processing; Mineralteknik;

    Sammanfattning : The general trend in flotation technology today is towards larger flotation cells, which enables a higher throughput. However, adverse effects such as segregation and reduced froth transport efficiency have also been observed in larger cells. LÄS MER