Flotation of Copper Sulfide Ores. Srdjan M. Bulatovic, in Handbook of Flotation Reagents, 2007 Processing characteristics of a massive sulfide ore. When using a conventional flotation reagent scheme and flowsheet, only a few of these ores respond (i.e. lime + NaCN + collector), giving extremely poor metallurgical results. The majority of these ores …
Flotation Cells. More ores are treated using froth flotation cells than by any other single machines or process. Non-metallics as well as metallics now being commercially recovered include gold, silver, copper, lead, zinc, iron, manganese, nickel, cobalt, molybdenum, graphite, phosphate, fluorspar, barite, feldspar and coal.
This report provides a perspective on the amount of water used by a conventional copper flotation plant, including the makeup water required to compensate for water losses. Much of the global supply of copper originates from mines that also produce byproduct molybdenum, but for simplicity, a single copper concentrate has been modeled for this ...
The results show that the collection of loellingite and copper matte from CS is crucial for the recovery of arsenic and copper. First-principles calculations indicate that O-isopropyl ethylthiocarbamate possesses a strong capacity to collect loellingite, and flotation experiments confirm that mixing O-isopropyl ethylthiocarbamate with sodium ...
Principles of Flotation Flotation is a physico-chemical separation process that utilises the difference in surface properties of the valuable minerals and the unwanted gangue minerals. The theory of froth flotation is complex, involving three phases (solids, water, and froth) with many subprocesses and interactions, and is not completely ...
Due to many problems such as pipe blockage, environmental pollution, and the difficulty of recovering precious metals, caused by extensive use of lime, the conventional program using lime (CaO) as the inhibitor and xanthates (e. g., sodium butylxanthate) (BX) as the collector has become increasingly restricted in use, and lime-free flotation …
Froth flotation is a selective separation process to separate valuable materials (recyclables, minerals, and other fine-size waste) from unwanted materials (gangue) using air bubbles …
This recovery vs grade trade-off is economically important in flotation, as increased recovery of the valuable is associated with decreased grade. For example, a 95% recovery of copper in the feed ore might give a concentrate grade of 18% Cu in the total recovered mass, while 80% Cu recovery might give a grade of 25% in the concentrate.
The liquid flotation reagents such as Aerofloat 15, 25, and 31 are commonly used in conjunction with the xanthates. These reagents possess both promoter and frother properties. When malachite and azurite are present, reagent 425 is often a useful promoter. This reagent was developed especially for the flotation of oxidized copper ores.
Bernoulli principle, which is widely used in fluid mechanics, ... and collector concentration on the shear yield stress of copper flotation tailings at concentrators placed at Sarcheshmeh and ...
Basic Principles of Froth Flotation (b) Method of froth removal. Agitation. Duration of treatment. Temperature. The variable results to be watched for and recorded are: ... be prohibited on account of the destructive effect of the resultant copper sulphate solution on the iron with which the pulp comes in contact in the mill, in which case an ...
The flotation of malachite is generally similar to that of the copper sulfides, indicating the special effectiveness of copper in the crystal lattice for collector attachment. Fourteen reagents that are potentially capable of chelating with a metal ion on the surface of the major copper sulfide minerals and pyrite were evaluated
400 million tons of sulphide ore is treated annually by flotation process worldwide. General principles and factors effecting flotation process, control systems, innovations and new trends are reviewed in the paper. M/s Hindustan Zinc Ltd, a leading mining and smelting company in India treats annually 3.5 million tons sulphide ore.
Case study one: a complex copper, lead and zinc flotation circuit (the Hellyer Project) The Hellyer Project was developed by Aberfoyle Limited and proceeded from discovery in 1983 to production in 6 years.1 The 156 106 t orebody consisted of Þne grained massive sulphide containing copper, lead, zinc and silver minerals with gold in a ...
Flotation Principles. Flotation, in its latest phase, is a process of concentrating ores by frothing. When crushed ore, previously mixed with water and a relatively minute addition of oil, is agitated …
Flotation. According to the difference in physicochemical properties of mineral particle surfaces, flotation is the method that selectively enriches the target minerals in the pulp at the gas-liquid interface and separates them from the pulp, thus realizing the mineral separation. It is also known as floating separation.
Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are separated as tailings. However, a significant amount of copper is lost into tailings during the processing; therefore, tailings can be considered …
employing flotation on commercial scale for processing of iron, ore. The most noted one is the Tilden Mine of Michigan, where amine flotation is used in addition to selective …
Three factors were measured in the flotation process of copper ore: the copper grade in a concentrate (β), the copper grade in tailings (ϑ), and the recovery of copper in a …
4.INTRODUCTION Flotation is the separation of particles from a mixture by causing some particles to collect on the surface of bubbles. Floatation is an extractive process where various minerals can …
Lowering flotation pulp density is usually used to reduce fine and ultrafine particle entrainment in mineral flotation plants, especially in cleaner flotation. In addition, the basic principle of most methods for decreasing mechanical entrainment is to reduce water recovery and promote the drainage of gangue particles from the froth zone to the ...
The adsorption of Cu species onto pyrite surface and its effect on flotation were investigated by using microflotation tests, first-principle calculations, and XPS surface analysis. The results indicated that the flotation of pyrite appears to be activated with CuSO4 only at alkaline pH, while being depressed at acidic and neutral pH. …
Froth flotation is a physicochemical process that is used to separate fine mineral particles from aqueous suspensions by selective attachment of some types of minerals to air bubbles. Froth flotation is the most important mineral processing technology for the production of valuable mineral concentrates from which metals and minerals are …
Operating experience with this system demonstrated that the application of kinetic principles results in an easily filtered, 90- to 95-percent-copper product, using less scrap iron for each pound of copper precipitated than in the conventional equipment. ... The tailings produced during the flotation of slimes for sulfide-copper recovery are ...
Copper (or metal) recovery percentages of the flotation circuits of a copper mine/mill are extremely important. For example, it is estimated that for a plant processing 50,000 tonnes of ore containing 1% copper per day, increasing the copper recovery from 86 to 87% of that contained in the ore could increase revenues by approximately $4 million ...
employing flotation on commercial scale for processing of iron, ore. The most noted one is the Tilden Mine of Michigan, where amine flotation is used in addition to selective flocculation and desliming. But considering the present scenario the recent developments such as column flotation technology it should be possible to extend the PIO-07 103
The froth flotation technique was originally developed in about 1910 to raise the copper concentrations of the strip-mined ores of Bingham Canyon, near Salt Lake City [9], and was further perfected for the differential separation of lead, zinc, and iron sulfides at Trail, B.C., at about the same time [10].
How Froth Flotation Works. To start with I will give you a simplified description of how selective froth flotation works, lets start over again with a description of the equipment and why it works. When the grinding circuit is finished with the ore it will be ground very fine and the density of the slurry will be between 30% to 45% solids.
A Review of the Treatment Copper Silver Gold Ores and Concentrates. May 2020. Diego Medina. Corby G Anderson. Globally both copper and precious metal orebody grades have been dropping and the ...
