flotation quartz dodecylamine
Effect of Mn (II) on quartz flotation using dodecylamine as …
In this work, the effect of Mn2+ on quartz flotation was investigated through flotation tests. It was found that quartz can be depressed with Mn2+ …
of Quartz by - Columbia University
RESULTS AND DISCUSSION Dodecylamine Flotation of quartz at pH 6.5*0.5 is given in Figure 1 as a function of dodecylarnine hydrochloride concent~ion. It is 6 seen that amine causes flotation but interestingly, use of excess amine causes a depression.
Selective adsorption mechanism of dodecylamine on the …
Flotation is one of the most effective methods to selectively separate refractory hematite from quartz. However, the separation mechanism of the hydrophilic minerals of hematite and quartz is still poor understood. In this work, the selective adsorption behaviors of the representative collector dodecylamine (DDA) and depressant causticized cassava starch (CCS) on the …
(PDF) Flotation and Surface Interactions of Wollastonite/Dodecylamine …
Mechanisms of Amine–Quartz Interaction in the Absence and Presence of Alcohols Studied by Spectroscopic Methods By Irina Chernyshova Adsorption of surfactants o n minerals for wettability control in improved oil recovery processes
Amine Flotation Systems - Metallurgist & Mineral …
Flotation Result. Using a Mark IV surface force apparatus, adsorption of dodecylamine hydrochloride on mica has been studied at pH 5.7 in the presence and absence of octanol. With amine alone, the repulsive forces …
Selective Flotation of Quartz from Hematite by Amide
The selectivity window between quartz and hematite flotation using amide-amine was higher at pH 10.5 (approximately 80% for 5 mg/L). Therefore, the use of starch is not necessary in siliceous itabirite flotation by amide–amine collector. ... Mechanisms of dodecylamine flotation of quartz. Miner Process Extr Metall Rev 7:81–94. https://doi ...
Selective Flotation of Quartz and Feldspar Using Non-Ionic
In the mixed surfactant system of PGME and dodecylamine acetate (DAA), a small addition of DAA causes drastic enhancement of quartz flotation in the wide pH range of 1 ~ 10. In the mixed surfactant system selective flotation of quartz from microcline would be anticipated at pH <3.0. The quartz floatability is thought to be as a result of the ...
Diamine flotation of quartz - ScienceDirect
The flotation of Quartz was studied as a function of pH when using N-alkyl-1, 3 diaminopropanes and n-dodecylamine as collectors. The alkyl chains of the diamines were 8, 12 and 16 carbons in length. Two collector concentrations were used and flotation studied in the absence of additives and in the presence of NaCl.
Flotabilities of Iron Minerals and Quartz in Flotation System of ...
In flotation system of dodecylamine, this paper studied the flotation properties of single minerals such as magnetite, martite and quartz firstly. On this basis, the influence of siderite to flotation efficiency of martite-quartz and magnetite-quartz mixed ores was discussed. The result shows that siderite will seriously effect on the flotation ...
Flotation separation of cervantite from quartz
cervantite from quartz by flotation is challenging. Dodecylamine (DDA) is an effective collector for oxide ores and is widely used in flotation of zinc oxides, bauxite, collophane and rejection of silicates from iron ores through reverse flotation (Majid et al., 2011; Filippov et al., 2014; Liu et al., 2015a, 2015b).
Effect of Mn (II) on quartz flotation using dodecylamine as collector
The flotation of quartz and magnetite was studied as a function of pH when using N-alkyl-1, 3 diaminopropanes and n-dodecylamine as collectors. The alkyl chains of the diamines were 8, 12 and 16 ...
Effect of Mn (II) on quartz flotation using dodecylamine as
Quartz is, in most cases, the major gangue mineral found in the manganese ore. Mn iron, dissolved from the surface of ore, will determine the interfacial properties of the particles and, thus, their flotation behavior. In this work, the effect of Mn2+ on quartz flotation was investigated through flotation tests. It was found that quartz can be depressed with Mn2+ and …
Effect of Mn (II) on quartz flotation using dodecylamine as …
Quartz is, in most cases, the major gangue mineral found in the manganese ore. Mn iron, dissolved from the surface of ore, will determine the interfacial properties of the particles and, thus, their flotation behavior. In this work, the effect of Mn2+ on quartz flotation was investigated through flotation tests. It was found that quartz can be depressed with Mn2+ and …
Flotabilities of Iron Minerals and Quartz in Flotation …
In flotation system of dodecylamine, this paper studied the flotation properties of single minerals such as magnetite, martite and quartz firstly. On this basis, the influence of siderite to flotation efficiency of martite-quartz and magnetite …
Mechanism of separating muscovite and quartz by flotation
Flotation experiments were performed to investigate the separation of muscovite and quartz in the presence of dodecylamine (DDA), tallow amine (TTA) and dodecyltrimethylammonium bromide (DTAC). The adsorption mechanisms of these three kinds of amines on muscovite and quartz were studied by FT-IR spectrum analysis, contact angle …
Adsorption of bis(2-hydroxy-3-chloropropyl) dodecylamine on quartz …
However, the crucial effect of slurry pH on quartz flotation could be discovered. And quartz recovery increased with the increase of slurry pH from 4.0 to 6.0, and then decreased when slurry pH varied from 9.0 to 10.5. The maximum quartz recovery was obtained when slurry pH varied from 6.0 to 9.0, and then kept stable. Thus, probable flotation ...
of Quartz by - Columbia University
Dodecylamine Flotation of quartz at pH 6.5*0.5 is given in Figure 1 as a function of dodecylarnine hydrochloride concent~ion. It is. 6 seen that amine causes flotation but interestingly, use of excess amine causes a depression. The flotation obtained at lower concentrations is in agreement with the expected ...
Preparation and properties of dodecylamine …
Dodecylamine (DDA) is a cationic collector with a high freezing point and poor water suitability, which is often used in the reverse flotation of iron ore. It is commonly used industrially as DDA–hydrochloride (DDA–HCl) or DDA–acetate. However, a main issue for hydrochloric and acetic acid is its difficult storage.
Effect of Mn (II) on quartz flotation using dodecylamine …
In this work, the effect of Mn 2+ on quartz flotation was investigated through flotation tests. It was found that quartz can be depressed with Mn 2+ and floated with dodecylamine in the pH region 7–8. In order to prove the validity of the findings, UV spectrophotometry, FTIR and SEM-EDS were carried out.
Flotation separation of cervantite from quartz
Flotation separation of cervantite (Sb2O4) from quartz was investigated using dodecylamine (DDA) as a collector. Experiments were conducted on single minerals and on a synthetic mixture of quartz and cervantite. Flotation separation mechanisms were investigated using the zeta potential technique, solution chemistry principles, density functional calculations and Fourier …
Intensification of interfacial adsorption of dodecylamine onto quartz ...
The adsorption heat between ultrasonically treated dodecylamine and quartz was −26.56 J/g. ... The ultrasonic treatment of DDA increased the quartz flotation recovery from 64.66% (without treatment) to 77.54% with a maximum increase rate of 19.92% for an initial concentration of 2.5 × 10 −5 mol/L. Our results thus indicated that the ...
Pegmatite-type Lithium Ore Flotation Process and Influencing …
Cationic trapping agents are generally amine trapping agents, of which dodecylamine is the more common, and are mainly used in reverse flotation roughing operations for quartz, mica and other vein ...
Flotation separation of quartz from magnesite using …
The flotation behavior and surface properties of magnesite and quartz exposed to CMC were studied by zeta potential tests, atomic force microscopy imaging and contact angle measurements. The addition of CMC as the depressant in reverse flotation using dodecylamine (DDA) as the collector exhibited a selectively depressive performance towards ...
Study on the Mechanism and Flotation Separation of Mica and Quartz …
By the same time, the adsorption amount of dodecylamine on the two minerals decreased with temperature increased.Molecular dynamics simulation showed that:the adsorption energy of dodecylamine cationic on mica surfaces was smaller than that on quartz surface, while the adsorption energy of dodecylamine cationic on these two minerals was almost ...
Intensification of interfacial adsorption of dodecylamine onto quartz …
Cationic surfactants of Dodecylamine (cas 124-22-1) (DDA) is mainly used as collector in the quartz flotation as it consists of hydrophilic amino group which attach to the quartz surface, and the hydrophobic carbon-chain groups which make the quartz hydrophobic. So the adsorption behaviour of DDA is vital to the quartz flotation.
Flotation separation of quartz from magnesite using …
depressant in reverse flotation using dodecylamine (DDA) as the collector exhibited a selectively depressive ... on the quartz flotation [12−16], which results in a growing demand for introducing a new environmentally friendly reagent to achieve efficient flotation separation of quartz and magnesite [17]. Carboxymethyl celloluse (CMC) is a ...
The effect of ethylene oxide groups in dodecylamine …
The results of flotation demonstrated that dodecylamine polyoxyethylene ether exhibited a profound collecting ability towards rutile mineral, it was worth mentioned that the recovery of rutile decreased with the increase of EO number. On the basis of zeta potential tests and XPS analysis, both protonated and neutral tertiary amine groups could ...
Effects of Al(III) Ions at Magnetite Flotation from Quartz by ...
The flotation separation of magnetite and quartz is a long-term challenge for the beneficiation industry. For high-quartz magnetite, conventional flotation shows poor separation effect, resulting in the waste of resources and low flotation efficiency. In this paper, dodecylamine acts as a collector and Al(III) ions in water act as a depressant to selectively separate magnetite …
Mechanisms of Dodecylamine Flotation of Quartz | Semantic Scholar
Mechanisms of Dodecylamine Flotation of Quartz R. Smith, J. L. Scott Published 1 October 1990 Materials Science Mineral Processing and Extractive Metallurgy Review Primary monoamines have been long used and studied as flotation collectors for quartz.
Preparation and properties of dodecylamine microemulsion for …
DOI: 10.1016/J.MINENG.2021.106821 Corpus ID: 233535399; Preparation and properties of dodecylamine microemulsion for the flotation of quartz and magnetite @article{Qiao2021PreparationAP, title={Preparation and properties of dodecylamine microemulsion for the flotation of quartz and magnetite}, author={Xiaoxiao Qiao and An Liu …
Effect of Mn (II) on quartz flotation using dodecylamine as …
acid is an appropriate modifier to separate quartz depressed by Mn2+ from other ores at pH 7. Key words: flotation; quartz; Mn(II); dodecylamine 1 Introduction Quartz is a silicate mineral, and there have been extensive investigations on the flotation. The most important methods that have long been used are using amines as collectors [1−3 ...
Effect of Mn (II) on quartz flotation using dodecylamine as ... - DeepDyve
Quartz is, in most cases, the major gangue mineral found in the manganese ore. Mn iron, dissolved from the surface of ore, will determine the interfacial properties of the particles and, thus, their flotation behavior. In this work, the effect of Mn2+ on quartz flotation was investigated through flotation tests. It was found that quartz can be depressed with Mn2+ and …
(PDF) FLOTATION AND SURFACE INTERACTIONS OF …
Abstract and Figures The solubility of wollastonite and its Hallimond flotation behavior as a function of dodecylamine concentration and pH are examined. The flotation response is characterized by...