Showing papers on "Mineral processing published in 1992"
01 Jan 1992
TL;DR: In this article, a case study of flotation applied to an Edible Oil Factory Wastewater was presented, where the floatability of Scheelite, Fluorite and Calcite was determined using the EmDee Microflot Method.
Abstract: 1. Fundamentals.- 1.1. The Study of Thin Aqueous Films as Models for Froths and Flotation.- 1.2. The Mechanisms of Collector Adsorption-Abstraction (Ionic and Non-Ionic Surfactants) on Heterogeneous Surfaces.- 1.3. Electrochemistry in the Plant.- 1.4. Flocculation of Fine Particles.- 1.5. Applied Mineralogy and Materials Balancing Procedures. Evaluations of Flotation Concentrators.- 1.6. Liberation by Size Reduction. Consequences and Improvements on Flotation Kinetics.- 1.7. Elements of Physically-Based Modelling of the Flotation Process.- 2 . Chemical Technology Aspects.- 2.1. Flotation Kinetics.- 2.2. Mixing and Hydrodynamics in Flotation Cells.- 2.3. Case Studies of Flotation Control.- 2.4. Mineral Surface Complexation in Flotation.- 2.5. Amide-Based Technologies in Flotation and Hydrometallurgy of Precious Metals.- 2.6. Determination of Floatability Data using the EmDee Microflot Method.- 2.7. Froth Flotation Kinetics - Theory and Model Experiments.- 2.8 Electrolytic Flotation.- 3. Mineral Processing.- 3.1. Features and Rotation of Complex Cu-Pb-Zn Sulphides.- 3.2. Interactions of Anionic Collectors in Flotation of Semi-Soluble Salt Minerals.- 3.3. Flotation of Salt-Type Minerals.- 3.4. Vibroacoustic Improvements of Froth Flotation.- 3.5. The Institute of Geology and Mineral Exploration (IGME) of Greece and its Research Activities on Flotation.- 3.6. The Influence of Multivalent Cations on the Floatability of Scheelite, Fluorite and Calcite.- 3.7. Non-Cyanide Technology for the Flotation of Lead-Zinc Ores.- 4. Water and Wastewater Treatment.- 4.1. Flotation in Water Treatment.- 4.2. Mechanism of Selective Ion Flotation.- 4.3. Flotation Techniques in Waste Water Treatment.- 4.4. Flotation of Pigments and Inks from Waste Paper.- 4.5. A Case Study of Flotation Applied to an Edible Oil Factory Wastewater.- 4.6. The Need for Advanced Treatment of Stormwater Run-off from Separate Sewer Systems.- List of Contributors.- List of Participants.
80 citations
TL;DR: In this paper, the authors provide a structured and up-to-date review of the ion flotation subject, to examine some recent developments, and to indicate some potential applications of the technique.
31 citations
TL;DR: In this article, the authors present examples of ways in which crushing and grinding, sizing, washing and scrubbing, gravity concentration, magnetic separation, and liquid/solid separation have been effectively used in environmental applications.
6 citations
Patent•
13 Jul 1992
TL;DR: In this paper, a process for improving selectivity and recovery in subsequent mineral processing by flotation of fine sulphidic minerals of copper, lead, zinc, nickel, molybdenum, gold, silver, and the platinum group minerals is described.
Abstract: of the Disclosure: A process is disclosed which is capable of improving selectivity and recovery in subsequent mineral processing by flotation of fine sulphidic minerals of copper, lead, zinc, nickel, molybdenum, gold, silver, and the platinum group minerals. The process comprises: providing a high shear conditioner consisting of a pulp holding tank, a high shear impeller, and a motor and drive capable of providing power draw for the impeller in the 5 to 150 kW/m3 range; and imparting to the pulp a high energy input ranging from 1 to 100 kWh/m3 of pulp, depending on the volume of the tank.
3 citations
TL;DR: In this article, some of the important emerging trends and evolutionary changes which have occurred in mineral processing technology are reviewed, including quantifying mineral liberation, in the design of new size reduction devices like high pressure rolls mills, advances in gravity separation and magnetic separation, development of new flotation machines like column flotation and flash flotation, design and testing of new reagents and the new technologies based on a combination of physical and chemical separation methods are reviewed.
Abstract: Due to increasingly complex mineralogy, steadily decreasing ore grades and ever increasing economic and environmental pressures, the mineral processing industry over the past decade had to evolve appropriate means to treat these difficult-to-process ore deposits. Some of the important emerging trends and the evolutionary changes which have occurred in mineral processing technology; are reviewed. This includes the areas of quantifying mineral liberation, in the design of new size reduction devices like high pressure rolls mills, advances in gravity separation and magnetic separation, development of new flotation machines like column flotation and flash flotation, design and testing of new flotation reagents and the new technologies based on a combination of physical and chemical separation methods are reviewed. The challenging areas of current research efforts have been highlighted.
3 citations
01 Jan 1992
TL;DR: The disseminationcharacteristics and processing properties of four types of niobium minerals are summarised and methods and results of Niobium mineral processing are also described in this article, where they are used in development and recovery.
Abstract: and large ore reserves and are rich in many elements,they are of greatervalue to use in development and recovery than other kinds of niobium minerals resources.The disseminationcharacteristics and processing properties of four types of niobium minerals are summarised and methods andresults of niobium mineral processing are also described.
1 citations