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reverse flotation of silica
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reverse flotation of silica - amicus-stendal.de
This invention is related to reverse flotation processes wherein silica or siliceous gangue is floated. Flotation is a process of treating a mixture of finely divided mineral solids, e.g., a pulverulent ore, suspended in a liquid whereby a portion of the solids is separated from other finely divided mineral solids, e.g., silica, siliceous gangue, clays and other
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reverse flotation of silica
This study investigates the removal of silica and alumina as impurities from hematite based low-grade iron ore containing 3418 mass iron 3110 mass of silica and 765 mass alumina Wet high-intensity magnetic separation WHIMS and reverse flotation RF were investigated In WHIMS process 9308 of iron was recovered with a grade of 5322 mass at an optimum magnetic density...
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Quartz Ore Beneficiation by Reverse Flotation for
2020-10-31 A preliminary enrichment using reverse flotation process improves the silica purity up to 99.6% and removes the major impurities, which is suitable intermediate technological product able for silicon production and optical application. This is a
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Removal of hematite from silica sand ore by reverse ...
2008-1-15 Reverse flotation of hematite from a local silica sand ore has been investigated using a batch, bench-scale mechanical flotation cell. Samples of silica sand with known measured size distributions were mixed with tap water and the required amount of Aero-800 collector and acid added to the mixture. Flotation was conducted at the specified airflow rates and levels of agitation.
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Effect of sodium silicate on the reverse anionic
2016-5-30 Flotation is usually employed to remove silicate as the main impurities from many ore types, especially iron ores. Iron oxides can be concentrated either by direct flotation, using anionic collectors, or reverse flotation of siliceous gangue with both cationic and anionic collectors,.
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The effect of ultra-fine coal on the flotation behavior
2019-1-15 During the process of subbituminous coal reverse flotation, the flotation froth appears gray, which means more silica particles than subbituminous coal particles are floated. It indicates that there is no connection between the surface change degree of subbituminous coal and the adsorption quantity.
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An overview of reverse flotation process for coal ...
2015-1-10 In the separation of all the coal–silica mixture, the froth ash content decreased over time and showed the entrainment of coal in the froth. So they concluded that the selective removal of silica in reverse flotation of coal is a kinetic process which was possible only in a narrow range of DTAB dosages which in turn is a function of coal rank.
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Froth flotation of silica or siliceous gangue - The Dow ...
1990-6-28 In another type of flotation scheme called reverse flotation, the undesired mineral, such as silica or siliceous gangue is floated away from the valuable minerals which are left in the tailings. A wide variety of compounds are taught to be useful as collectors, frothers and other reagents in froth flotation.
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Separation of silica from bauxite via froth flotation ...
2009-3-1 Previous exploratory tests performed by the authors had shown the cationic reverse flotation route to be the most effective in separating quartz silica from gibbsite. A commercial ether-amine (Flotigam EDA, provided by Clariant) was used as a collector, and caustic corn starch (provided by Corn Products) as a gibbsite depressant.
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Froth flotation of silica or siliceous gangue - DOW ...
Abstract of EP0463823 Silica and siliceous gangue are separated from desired mineral values, particularly iron and phosphate, by reverse forth flotation in the presence of an amine collectors and an effective amount of an alkanol amine such as diethanol amine.
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reverse flotation of silica - amicus-stendal.de
Reverse Flotation of Silica from Phosphate Ores. A series of 750 g samples of apatite-containing phosphate ore from Florida are prepared. The raw feed from which samples are drawn has a particle size of about 90 percent less than 350 microns and 15 percent less than 37 microns. It contains 26.8 percent SiO 2 and 18.7 percent P 2 O 5.
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reverse flotation of silica
In the flotation process the flotation means the useful mineral blowing out with the foam while the reverse flotation means that the useful mineral staying in the bottom of the flotation machine and the gangue mineral blowing out with the foamIn order to reduce the content of the silica and sulfur in the magnetite concentrate the magnetite concentrate can be carried out the flotation...
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Reverse flotation of silica from Kudremukh iron ore. 2 ...
An experimental programme based on statistical analysis was used for optimizing the reverse Rotation of silica from non-magnetic spiral preconcentrate of Kudremukh iron ore. Flotation of silica with amine and starch as the Rotation reagents was studied to estimate the optimum reagent levels at various mesh of grind. The experiments were first carried out using a two level three factor design.
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reverse flotation silica - atelier-fiechter.ch
Quartz Ore Beneficiation by Reverse Flotation for Silicon . In this the reverse flotation as beneficiation process for high-purity silica valorization from Draissa quartz deposits (Algeria) is studied as a potential raw material for photovoltaic silicon production and starting charge for crystal growth material for a large wide of applications such laser and scintillation.
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Implementation of reverse flotation method to reduce ...
This paper reports a study that implements reverse flotation method to separate silica from West Kalimantan bauxite ores. The study is aimed to find the good process condition to obtain low-silica bauxite as the feed for the Bayer process. The experiments were carried out in a 1 L of flotation cell tank. Dodecylamine was used as the collector, starch as the depressant, and MIBC as the frother.
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FROTH FLOTATION OF SILICA OR SILICEOUS GANGUE
1. A process for the separation of silica or siliceous gangue from mineral values by reverse froth flotation using an amine collector characterized in that said flotation is carried out in the presence of at least one alkanol amine. 2. A process as claimed in Claim 1, wherein the material separated is a
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Removal of Silica and Alumina as Impurities from Low
2018-5-18 the entrainment of silica and alumina was low and the iron minerals could be ef-ficiently recovered. 3.2. Reverse Flotation 3.2.1. Effect of Slurry pH Figure 5 shows the effect of pH on the flotation of silica and alumina using DAA as cationic collector. Silica trend shows its
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Flotation collectors optimized performance
an improved silica flotation collector for reverse flotation of calcite as their ore and needs were changing. The reason for the request was that the quality of the ore feeding the flotation plant had been reduced – resulting in lower recoveries – and that the current collector generated excessive froth in the flotation
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Silica sand flotation -Sinonine
2021-5-4 In silica sand processing and sand washing plant, flotation is an important way to obtain high purity silica sand.Through flotation, not only the residual weak magnetic iron in silica sand can be removed, but also the aluminum oxide, mica and other non-magnetic materials embedded in the silica sand can be removed, thus making the silica sand more pure.
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US5124028A - Froth flotation of silica or siliceous
Silica and siliceous gangue are separated from desired mineral values, particularly iron and phosphate, by reverse froth flotation in the presence of amine collectors and effective amounts of alkanol amines such as diethanol amine.
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reverse flotation of silica - amicus-stendal.de
Reverse Flotation of Silica from Phosphate Ores. A series of 750 g samples of apatite-containing phosphate ore from Florida are prepared. The raw feed from which samples are drawn has a particle size of about 90 percent less than 350 microns and 15 percent less than 37 microns. It contains 26.8 percent SiO 2 and 18.7 percent P 2 O 5.
Read More
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reverse flotation of silica
In the flotation process the flotation means the useful mineral blowing out with the foam while the reverse flotation means that the useful mineral staying in the bottom of the flotation machine and the gangue mineral blowing out with the foamIn order to reduce the content of the silica and sulfur in the magnetite concentrate the magnetite concentrate can be carried out the flotation...
Read More
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Reverse flotation of silica from Kudremukh iron ore. 2 ...
An experimental programme based on statistical analysis was used for optimizing the reverse Rotation of silica from non-magnetic spiral preconcentrate of Kudremukh iron ore. Flotation of silica with amine and starch as the Rotation reagents was studied to estimate the optimum reagent levels at various mesh of grind. The experiments were first carried out using a two level three factor design.
Read More
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Implementation of reverse flotation method to reduce ...
2017-1-20 This paper reports a study that implements reverse flotation method to separate silica from West Kalimantan bauxite ores. The study is aimed to find the good process condition to obtain low-silica bauxite as the feed for the Bayer process. The experiments were carried out in a 1 L of flotation cell tank. Dodecylamine was used as the collector, starch as the depressant, and MIBC as the frother.
Read More
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reverse flotation silica - atelier-fiechter.ch
Quartz Ore Beneficiation by Reverse Flotation for Silicon . In this the reverse flotation as beneficiation process for high-purity silica valorization from Draissa quartz deposits (Algeria) is studied as a potential raw material for photovoltaic silicon production and starting charge for crystal growth material for a large wide of applications such laser and scintillation.
Read More
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FROTH FLOTATION OF SILICA OR SILICEOUS GANGUE
1. A process for the separation of silica or siliceous gangue from mineral values by reverse froth flotation using an amine collector characterized in that said flotation is carried out in the presence of at least one alkanol amine. 2. A process as claimed in Claim 1, wherein the material separated is a
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Removal of hematite from silica sand ore by reverse flotation ...
2011-9-9 Removal of hematite from silica sand ore by reverse flotation technique - Available online at .. 首页 文档 视频 音频 文集 文档 搜试试 会员中心 VIP福利社 VIP免费专区 VIP专属特权 客户端 看过 登录 百度文库 互联网 Removal of hematite from silica sand ore ...
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Flotation collectors optimized performance
an improved silica flotation collector for reverse flotation of calcite as their ore and needs were changing. The reason for the request was that the quality of the ore feeding the flotation plant had been reduced – resulting in lower recoveries – and that the current collector generated excessive froth in the flotation
Read More
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How to use Column Flotation to Reduce Silica
2018-5-1 The requirement for higher quality pellets demands that the silica content be lowered to levels ranging from 0.25% – 2.0% SiO2. Reverse flotation (silica is floated away from the iron concentrate) has proven to be an economical and effective method for reducing the concentrate silica
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2003-Progress in flotation de-silica-中南大学胡岳华教授课题组
2015-4-3 Flotation de-silica from the diasporic-bauxite is one of the key basic research projects. It aimed to reveal the scientific mechanism between the crystal structure and surface properties, structure-properties of effective flotation reagent as well as the solution chemistry of flotation and interfacial interactions in the flotation system of diaspore and aluminosilicate minerals.
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