Showing papers on "Mineral processing published in 1989"
TL;DR: In this article, the effect of nitrogen on the flotation separation of sulphides from complex ores was investigated and it was shown that pyrite floatability was enhanced after nitrogen conditioning.
43 citations
TL;DR: A review of published literature on the processing of difficult-to-treat ferrous and nonferrous ores that have very fine liberation size and have constituent minerals with similar properties for which the conventional mineral processing techniques are ineffective is presented in this article.
Abstract: This paper is concerned with a review of published literature on the processing of difficult-to-treat ferrous and nonferrous ores that have very fine liberation size and have constituent minerals with similar properties for which the conventional mineral processing techniques are ineffective. By altering mineralogy either pyrometallurgically or hydrometallurgically, the low cost methods of mineral processing could be applied on ores which are complex and refractory in character. It briefly reviews methods such as magnetizing roasting and direct reduction for ferrous ores and discusses the pyrometallurgical pre-treatments on nonferrous ores, such as sulfidizing roasting, roast-flotation, segregation process and matte separation process, and hydrometallurigcal pre-treatments to extract valuable metal values by applying leach-precipitation-flotation method, and ion flotation. Application of a combination of chemical metallurgy and mineral processing methods to solid waste materials, in particular, steel plan...
33 citations
TL;DR: Although tantalum and lithium are chemically quite different elements, they both occur in the Greenbushes pegmatite in adjacent mineralogical zones as discussed by the authors, and both occur as complex pentoxide minerals in association with niobium and tin.
31 citations
TL;DR: In this article, the authors studied the beneficiation properties of other antimony oxides, including pure antimony and jamesite, and showed that the properties of these oxides are similar to those of pyrite and pyrrhotite.
26 citations
TL;DR: In this article, the authors present a review of the state of the art for the extraction of antimony from stibnite ores and summarize the experience from processing plants, focusing on selectivity in the primary Sb flotation.
25 citations
01 Jan 1989
TL;DR: Sulfide mineral flotation is known to be affected by oxidation-reduction conditions in the pulp, although there is some doubt as to whether it is the oxidizing environment or the type of oxidant.
Abstract: Sulfide mineral flotation is known to be affected by oxidation-reduction conditions in the pulp, although there is some doubt as to whether it is the oxidizing environment or the type of oxidant wh ...
9 citations
Patent•
12 Dec 1989TL;DR: In this article, a process for recovering elemental sulfur from volcanic and non-volcanic ores is described, in which ore is processed by crushing the ore to a coarse particle size autoclaving to separate the sulfur from the ore, mild grinding to selectively reduce the size of the liberated sulfur particles, flotation and sulfur separation/filtration steps to produce a sulfur of at least 99% purity.
Abstract: A process for recovering elemental sulfur from volcanic and non-volcanic ores is disclosed. Ore is processed by crushing the ore to a coarse particle size autoclaving to separate the sulfur from the ore, mild grinding to selectively reduce the size of the liberated sulfur particles, flotation and sulfur separation/filtration steps to produce a sulfur of at least 99% purity. The process recovers at least 90% of the elemental sulfur contained in the ore. The particular crushing of the ore and selective grinding techniques for reducing sulfur particles for reducing sulfur particles size are important factors in the efficiency of the process since the grinding techniques inhibit the formation of fine gangue which is difficult to separate from the liberated sulfur.
5 citations
Journal Article•
TL;DR: In this paper, antimony-bearing minerals in a complex sulphide ore from the Rakkejaur deposit have been studied in laboratory experiments, and microprobe equipment has been used to distinguish the various antimony types.
Abstract: Flotation of antimony-bearing minerals in a complex sulphide ore from the Rakkejaur deposit has been studied in laboratory experiments. Microprobe equipment has been used to distinguish the various ...
1 citations
Patent•
28 Apr 1989
TL;DR: In this paper, a process for froth flotation for the recovery of sulfide minerals, or sulfidized oxide minerals, from their ores utilizing a methylene bisxanthate as a collector reagent, either alone or in combination with other known collector reagents, is described.
Abstract: A process for froth flotation for the recovery of sulfide minerals, or sulfidized oxide minerals, from their ores utilizing a methylene bisxanthate as a collector reagent, either alone or in combination with other known collector reagents in the froth flotation of an aqueous pulp of such ores.