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Dispersion of flotation concentrates before magnetic separation
Luleå University of Technology.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Industriell miljö- och processteknik.
1994 (engelsk)Inngår i: Minerals Engineering, ISSN 0892-6875, E-ISSN 1872-9444, Vol. 7, nr 12, s. 1505-1516Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Laboratory HGMS and WHIMS tests on flotation concentrates proved that grade and recovery in magnetic separation is greatly affected by the particle dispersion of the head feed. In this investigation, the recovery of a spodumene flotation concentrate, floated with a fatty acid collector, was improved by 10% when the pulp pH was reduced from pH 7 to pH 2 in order to improve the particle dispersion. For a phosphine floated Pb product, carrying sphalerite and chalcopyrite, grade and recovery was optimized in a window around pH 5. Recovery was improved by approximately 5%. The carry over capacity from the non-magnetic to the magnetic product for agglomerates containing a small amount of magnetic particles can be estimated using the HGMS capture probability function and the magnetic susceptibility of the material. An estimate of the spodumene / amphibolite system indicates that as little as 3% amphibolite in an agglomerate may be sufficient for the floc to be captured in the matrix. The corresponding number for the galena / sphalerite system is about 20%.

sted, utgiver, år, opplag, sider
1994. Vol. 7, nr 12, s. 1505-1516
HSV kategori
Forskningsprogram
Mineralteknik
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URN: urn:nbn:se:ltu:diva-7014DOI: 10.1016/0892-6875(94)90042-6ISI: A1994PW05000005Scopus ID: 2-s2.0-0028712658Lokal ID: 55858aa0-ad47-11db-905c-000ea68e967bOAI: oai:DiVA.org:ltu-7014DiVA, id: diva2:979901
Merknad
Godkänd; 1994; 20070126 (pafi)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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