On the impact of grinding conditions in the flotation of semi-soluble salt-type mineral-containing ores driven by surface or particle geometry effects?

Autor: Lucas Pereira, Nathalie Kupka, Duong Huu Hoang, Bruno Michaux, Sondos Saquran, Doreen Ebert, Martin Rudolph

Publikováno v: International Journal of Mining Science and Technology, Vol 33, Iss 7, Pp 855-872 (2023)

Grinding and flotation processes are often studied independently, despite the well-established grinding influence on flotation performance, which affects not only particle size and thus liberation but also shape and leads to complex changes in pulp c

Externí odkaz: https://doaj.org/article/1894c264b5454fc08414567d1a29af95

Acidified water glass in the selective flotation of scheelite from calcite, part II: species in solution and related mechanism of the depressant

Autor: Martin Rudolph, Nathalie Kupka, Anne Jantschke, Peter Kaden, Edgar Schach

Publikováno v: Physicochemical Problems of Mineral Processing 56(2020)5, 797-817

Sodium silicate is one of the main depressants against calcite and fluorite in the scheelite flotation industry. In the first part of this article, the authors acidified sodium silicate (AWG) with three acids (sulfuric, oxalic and hydrochloric) to im

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b24ea9fd49381b868d0ff200e066890
https://doi.org/10.37190/ppmp/125639

A contribution to exploring the importance of surface air nucleation in froth flotation – The effects of dissolved air on graphite flotation

Autor: Haijun Zhang, Ming Xu, Urs A. Peuker, Chenwei Li, Martin Rudolph, Nathalie Kupka

Publikováno v: Colloids and Surfaces A: Physicochemical and Engineering Aspects. 633:127866

The formation of surface microbubbles induced by air nucleation on graphite surfaces and the air diffusion process in oversaturated water play important roles in increasing the recovery of graphite and other valuable minerals in flotation. A microsco

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b9ec6cf15b8689c396ebe5523b193a61
https://doi.org/10.1016/j.colsurfa.2021.127866

Flotation study of fine grained carbonaceous sedimentary apatite ore – Challenges in process mineralogy and impact of hydrodynamics

Autor: Nathalie Kupka, Urs A. Peuker, Duong Huu Hoang, Martin Rudolph

Publikováno v: Minerals Engineering. 121:196-204

The flotation beneficiation of apatite for phosphate production is challenging for finely disseminated sedimentary ores rich in carbonates. Similarities in surface properties of the semi-soluble salt-type carbonate and phosphate calcium minerals comb

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fa929af22608b6e64f00582dfe83ab6e
https://doi.org/10.1016/j.mineng.2018.03.021

Froth flotation of scheelite – A review

Autor: Martin Rudolph, Nathalie Kupka

Publikováno v: International Journal of Mining Science and Technology 28(2018)3, 373-384
International Journal of Mining Science and Technology, Vol 28, Iss 3, Pp 373-384 (2018)
International Journal of Mining Science and Technology

Froth flotation of scheelite has regained new focus since the 2010s and research regarding floatability and reagents has made great progress over the years. The main objective was and remains the selective flotation of scheelite from other calcium-be

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68e35a1602c7dccc30ef9d3cd4b7acd1