Abstract. en The cationic reverse flotation route is one of the main processes to remove quartz from iron ore. The ether amines are the most common surfactant used to modify quartz s surface hydrophobicity. Beyond the traditional differentiation between ether monoamines and ether diamines these reagents may have other differences as raw
ABSTRACT OF THE DISCLOSURE This invention relates to the use of primary aliphatic ether amines as silica collectors in the concentration of minerals by the froth flotation process. More specifically it relates to the use of mixtures of primary methyl branched aliphatic ether amines and the partially neutralized salts thereof as flotation reagents.
Froth flotation of iron ores is one of the most widely used methods to upgrade iron ore into highgrade concentrates. (mainly starches) and primary ether amines and diamines are expected when dealing with iron ores with complex silicate gangue Veloso de Melo C H Correa de Araujo A and Filippov L O 2017
Ether amine greases are commonly used in the flotation of iron ore and after use are discarded in the tailings dams. The aim of this work was to quantify a commercial ether amine using bromocresol green dye in chloroform. The statistical data obtained show that the method is characterized by satisfactory accuracy and precision with a detection limit below 1 mg/L. The recovery obtained was 98.
A review of the processing plant practices indicates that the partially neutralised ether monoamines are mostly used for the reverse cationic flotation of iron ores. In contrast the best results for coarse silicate particle flotation were achieved with ether diamines.
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5 a). Because ether diamine is a strong collector in iron ore flotation its capability to induce such aggregation is also stronger than ether monoamine 7 which is responsible for the poor flotation in the presence of ether diamine. 100 (a) (b) Figure 5. Schematic description of the kaoliniteamines .
The FLOTIGAM™ series includes ether amines ether diamines and other cationic collectors for every iron ore flotation challenge. Our FLOTIGAM™ collectors are able to produce iron ore concentrate with low silica content by froth flotation resulting in high purity concentrate which is needed for steel production.
ABSTRACT The present work has the objective of investigating the possible recycling route for etheramines used for improving the efficiency of the process of iron ore s reverse flotation. A physicalchemical separation method has been studied using TANFLOC as flocculant. The wastewater contains mainly amine and silica and the objective of this method was to separate the silica from the
The use of primary aliphatic ether amines as silica collectors in the concentration of minerals by the froth flotation process. More specifically the use of mixtures of primary methyl branched aliphatic ether amines and the partiallyneutralized salts thereof as flotation reagents. In further aspect the use of mixtures of 3isooctoxypropyl monoamine and 3isodecoxypropyl monoamine and/or the
In mineral flotation the process waste should not be transferred to the floating part. However due to the mechanical entrainment of these particles with the target particles or their
Amine collectors have often been used in cationic reverse iron ore flotation to achieve the separation with quartz impurities. The main problem associated with these collectors is related to the
The invention relates to a process for enriching an iron mineral from a silicate containing iron ore by inverse flotation comprising the addition of a collector or collector composition comprising at least one of the compounds of formulae RO—X—NH 2 (Ia) RO—X—NH 3 Y − (Ib) RO—X—NH—Z—NH 2 (IIa) and RO—X—NH—Z—NH 3
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Jul 22 2022the flotation process for each process included the following (1) pouring g of ilmenite (or a mixed mineral of ilmenite and titanaugite (1 1)) and 40 ml of deionized water into a plexiglass cell and stirring for 1 min to prepare a slurry (2) using ph regulators (hcl or naoh stock solution) to adjust the ph value of the slurry (3) adding a .
Sep 7 2022abstract pyrrhotite is an associated mineral that exists widely in sulfide presence of pyrrhotite will affect the recovery of platinum group researchers have paid increasing attention to the flotation separation of superstructures owning different fe/s ratios results in various crystal .
Other known products for the cationic flotation of iron ores include fatty amines of fatty betaamines various ether diamines (see United States Patent Nos. 3 363 758 and 3 404 165) and
The present invention relates to a process for froth flotation of silicatecontaining iron ore by using a collecting agent which contains a combination of an ether monoamine and an ether polyamine. BACKGROUND OF THE INVENTION Iron ore frequently contains a considerable amount of silicate.
A process of separating at least one mineral silica from an aqueous medium one containing iron ore by froth flotation using cationic alkyloxyalkaneamine collectors free of acrylonitrile is described. Alkyloxyalkaneamines free of acrylonitrile may be made by reacting an alcohol with an alkenenitrile having at least 4 to 13 carbon atoms. This process produces branching on the third
A froth flotation process for separating silica from iron ore which comprises frothing said ore in an aqueous medium in the presence of to 2 pounds per ton of said ore of a water dispersible liquid mixture of aliphatic ether amines having the general formula ROCH 2CH 2CH 2NH 2. wherein R is a mixture of methyl branched aliphatic
the most popular flotation route in iron ore industry the direct flotation of iron ox ides still appears desirable for some low grade iron ores that contain a vast amount of quartz. For example at Republic Mine Michigan a hematite ore is upgraded from Fe to Fe with a Fe recovery of using the direct flotation route.
Ether amine greases are commonly used in the flotation of iron ore and after use are discarded in the tailings dams. The aim of this work was to quantify a commercial ether amine using the bromocresol green dye in chloroform. The statistical data obtained show that the method is characterized by satisfactory accuracy and precision with a detection limit below 1 mg/L. The recovery obtained was
The DLVO fit gives Ψ0 = 350 mV and nm² of surface area per charge. Flotation Result The flotation and surface force measurements were conducted in the present work at pH where dodecylamine is completely ionized to RNH3 ions. Under this condition the adsorption mechanism should be controlled mainly by columbic attraction.
Iron ore concentrates can be obtained by the flotation of iron ores providing mixtures containing at least one ether canine of formula (I) R 1 O(C n H 2n) yNH(C m H 2mNH) x H . in which R 1 is a linear or branched chain aliphatic hydrocarbon moiety having 6 to 22 carbon atoms and 0 1 2 or 3 double bonds n and m independently of one another represent the number 1 2 or 3 x=0 or the
Abstract Ether amine greases are commonly used in the flotation of iron ore and after use are discarded in the tailings dams. The aim of this work was to quantify a commercial ether amine using the bromocresol green dye in chloroform.