The flotation tests were carried out in an RK/FD-type laboratory flotation machine (0.5 l). The ore samples were firstly pretreated by the desulfurization process in order to decrease the effect of sulfur in bauxite. The content of sulfur was decreased to 0.3% by desulfurization flotation process.
In this research, an effort is made to separately introduce the various processes, industrial practices, and fundamental research activities to remove sulfur …
The Kevitsa concentrator employs a Cu–Ni fractional selective flotation circuit with a desulfurization circuit at the end of the process. The original flotation circuit is a typical conventional polymetallic ore flotation (See Fig. 12) where copper is concentrated in the first circuit, and this is followed by a nickel flotation circuit. Two ...
The results in optimal conditions indicated that column flotation was considerably efficient for iron ore desulfurization so that a high purity concentrate with the sulfur content of 0.08 % and ...
A tremendous amount of research has been done on refining the flotation process for iron ore and designing the reagents which go into it. This paper reviews the industrial practices and fundamental research surrounding iron ore flotation. The advantages and disadvantages of direct flotation, cationic reverse flotation, and …
The aim of this paper is to provide a well-detailed, well-referenced source for the current status of iron ore flotation, and thus provide a useful guide to its future development and to further ...
The Froth Flotation Process is about taking advantage of the natural hydrophobicity of liberated (well ground) minerals/metals and making/playing on making them hydrophobic (water-repel) individually to carefully separate them from one another and the slurry they are in. For this purpose we use chemicals/reagents: Frothers (MIBC) is …
The complex disseminated relationship between pyrrhotite and magnetite as well as poor liberation of finely disseminated sulfurous pyrrhotite was revealed through the mineralogy investigation of certain high-sulfurous iron ore. Grinding process and fineness have been found as significant factors influencing the flotation desulfurization ...
Desulfurization using thermal decomposition is a side process in iron ore sintering where the iron ore concentrate turns to roasted pelletized iron ore and this has been considered by many researchers.[55–59] All the reactions associated with pellet desulfurization may be divided into four steps: the dissociation of sulfides; their oxidation ...
The other is to reduce the sulfur content via the iron ore beneficiation process. As a sorting process, flotation plays a fundamental role in this. The objective of the test campaign described below was to reduce the sulfur content in an iron ore concentrate from 1.3 % to less than 0.4 %.
[Show full abstract] size, froth velocity, froth colour and froth stability) in the column flotation was discussed during desulfurization of an iron ore using response surface methodology.Image ...
Desulfurization of hematitic concentrate of iron ore of the Gol-E-Gohar mine using reverse flotation method E. Panahi 1, A. Abdollahzadeh 2, A. Sam 3, M. Jahani 4, M. Yaghobi Moghaddam 4, A ...
Thirty-seven years of mining and processing of Cu-porphyry ore has been resulting in the production more than 540 million tons of waste tailings in Sarcheshmeh industrial complex, Iran's largest Cu producer. The main objective of this study is to evaluate the changes that occurred in the trace elements content of Sarcheshmeh mine tailings …
This study presents an experimental program performed to investigate the effects of flotation variables including gas flow rate, froth depth, slurry solids percent, frother/collector dosage, and pH on the froth features such as bubble size, froth velocity, froth color and froth stability during desulfurization of an iron ore.
With the depleting reserves of high-grade iron ore in the world, froth flotation has become increasingly important to process intermediate- and low-grade iron ore in an attempt to meet the rapidly growing demand on the international market. In over half a century's practice in the iron ore industry, froth flotation has been established as an …
The reagents used in iron ore flotation, including starch, amines and fatty acids, and the mechanisms of their interactions with the minerals in iron ore are examined.
As the main type of iron ore, magnetite is the main raw material in the steel industry, which has a strict demand for its sulfur content [1], [2], [3]. ... This paper investigates the circuit design of polymetallic ores, including desulfurization within the flotation process. Three types of circuit designs are analyzed: fractional flotation ...
The flotation process normally adds copper sulfate as an activator which could accelerate the flotation rate of pyrrhotite. The flotation is conducted at the natural pH of the milled ore which may vary between 7.5 and 9 but it is typically closer to the higher value [5]. However, in the practice of iron ore flotation, the loss of valuable ...
Removal of quartz from iron ore was accomplished industrially via an anionic reverse flotation technique. However, in that kind of flotation, the interaction of the flotation reagents with the ...
The contamination of sulfur emanating from pyrrhotite in magnetite concentrates has been a problem in iron ore processing. This study utilized froth flotation to float pyrrhotite away from ...
Owing to the negative effects of sulphur in iron ore on steelmaking process and environment, a tank leaching process was performed in atmospheric conditions to remove the sulphur from the iron ore concentrate and simultaneously to transform sulphide minerals into useful by-products. To achieve desirable sulphur removal rate and …
In the iron ore industry, reverse quartz flotation has been successfully employed for particle sizes below ISOfim after the desliming process. The high demand for iron ore products has made ...
that column flotation was considerably more efficient than mechanical flotation for iron ore desulfurization so that a high purity concentrate with the iron recovery of 98%, can be obtained. Author
3.1 Coal pyrite depressants. Although the contact angle is smaller and the induction time of coal pyrite is longer than those of coal (Qi et al. 2019), coal pyrite has better floatability than ore pyrite due to the doping of C atoms.Efficient depressants are needed to inhibit the floatability of pyrite in the flotation separation of coal and pyrite.
This paper investigates the circuit design of polymetallic ores, including desulfurization within the flotation process. Three types of circuit designs are …
The present work aims to study the feasibility of sulfur removal from Soork iron ore down to lower than 0.1% using the flotation process. According to the characterization analysis, the ore ...
Various studies have been increasingly performed on the reduction of sulfur content of iron ores and concentrates. The presence of sulfur in these materials causes technical problems in steel and alloys and environmental issues in the sintering of iron ore process. The achievement of higher sulfur removal rates has been an important goal …