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Nov 24, 2012· Patent US – Flotation process for separating silica from . A separation process is provided for treating a feed material comprising silica, feldspar, and metal impurities, including at least one of mica, iron impurities, or . »More detailed
Optimization of Flotation for the Reduction of Heavy Minerals and Iron Content on Silica Sand ... The target of this study is the optimization of an industrial froth flotation process of silica sand to minimize the Fe 2 O 3 and heavy minerals content. Multiple laboratory tests were made, following the
Mar 07, 2019· The disclosure relates to the improvement to the commercially used high pH selective flocculation deslimingcationic silica flotation (SFDF) process which focuses on removing the gangue minerals from the iron oxide minerals in an attempt to recover a high percentage all of the iron oxide and carbonate minerals.
The impact of water quality on flotation performance by G. Levay*, Smart† and Skinner† Synopsis Water represents 80–85% of the volume of mineral pulp processed in flotation circuits. Imperatives for a more detailed focus on circuit water quality and its control have come from increasing
Patent US Froth flotation of silica from iron ore by anionic ... The present process is especially suitable for use on fines such as are found in the overflow from iron ore washer plants; in waste products from heavymedia...
Heavy Minerals Of Silica Sand . Prompt : Caesar is a famous mining equipment manufacturer wellknown both at home and abroad, ... » patent silica iron flotation » heavy mineral extract froth flotation in silica sand » froth flotation of silicate minerals » froth flotation rare earth minerals.
to remove silica from iron minerals. The flotation routes of iron ore can be classified into f ive major groups, cationic flotation of iron oxide, cationic flotation of quartz, anionic flotation of iron oxide, anionic flotation of quartz, and combination[2]. Despite the variety of flotation routes
Silica and Iron Recovery from a Residue of Iron Ore Flotation P. F. F. Martins, C. A. Morais*, F. S. Lameiras, R. O. Albuquerque Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Brazil Abstract A study of silica and iron recovery from the iron ore concentration tailing is presented. The residue is composed of % Fe, % SiO 2
May 30, 2016· The depressant dosage is an important factor in the reverse flotation of iron oxides, which affects the iron recovery . Fig. 1 shows the effect of sodium silicate dosages on the floatability (recovery) and grade of iron, silica and phosphorus of Chador Malu samples (at pH ). Download : Download highres image (103KB)
The relevant responses in iron ore reverse cationic flotation are silica grade and iron recovery in the valuable product. The flotation performance may be controlled via the dosages of amine (collector) and starch (depressant). Low amine dosages are desirable for this reagent is the most expensive.
The requirement for higher quality pellets demands that the silica content be lowered to levels ranging from % – % 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 content to very low levels. Laboratory and commercial testwork has demonstrated some significant ...
Patent US Froth flotation of silica from iron ore by anionic ... Froth flotation of silica from iron ore by anionic collectors ... Most of these ores are too low in iron and too high in silicabearing gangue to be suitable for ..... 1981, Aug 30, 1983, Materias Primas, Monterrey,, Process for purifying silica .
AU01 AUSTRALIA CF Dow Case No. 38,666F Commonwealth of Australia The Patents Act 1952 DECLARATION IN SUPPORT In support of the Convention Application made by: THE DOW CHEMICAL COMPANY 2030 Dow Center, Abbott Road Midland, Michigan 48640, for a patent for an invention entitled: FROTH FLOTATION OF SILICA OR SILICEOUS GANGUE I, RICHARD G. WATERMAN, General Patent .
Apr 10, 2012· Pat. No. 4,422,928 (Exxon Research and Engineering, publication date 27 Dec. 1983) reveals a froth flotation process for separating silica from iron ore employing a liquid aliphatic ether amine of the formula R—O—(R 1 —O) z —CH 2 —CH 2 —CH 2 —NH 2 in which R is an aliphatic methyl branched radical having nine carbon atoms, R ...
CROSSREFERENCE TO RELATED APPLICATIONS. This application is a nonprovisional application of Provisional Patent Application No. 62/250,455, filed Nov. 3, 2015, and entitled "Methods, Devices, Systems and Processes for Upgrading Iron Oxide Concentrates Using Reverse Flotation of Silica at a Natural pH," the disclosure of which is expressly incorporated in its entirety herein by this ...
After a reverse froth flotation step, generally the iron ore bottom fraction either contains a low level of silica but exhibits a low recovery of iron, or it exhibits high recovery of iron but contains a high level of silica. Various solutions have been proposed in the prior art to increase iron recovery and at the same time reduce silica levels.
patent silica iron flotation . Froth Flotation Quartz Removal From Feldspar Patents. froth flotation quartz removal from feldspar patents. Silica Sand Iron Flotation; Flotation of Feldspar, Spodumene, Quartz and Mica from a first froth. Contact Supplier Flotation Process For separating silica .
Flotation equipment technology screening922 Кб. Pneumatic flotation is however still considered as a nonconventional flotation process. Due to its highly selective nature in operation it has generallyCMH spent considerable time on developing a reverse flotation process and a reagent suite to try and reduce the silica content to acceptable levels.
Silica sand for making glass, pottery and ceramics must meet rigid specifications and generally standard washing schemes are inadequate for meeting these requirements. Sand for the glass industry must contain not more than % Fe2O3. Concentrating tables will remove free iron particles but iron stained and middling particles escape gravity ...
Aug 25, 2016· Mining Machinery for Coal, Sand / Iron Ore Crushing and Flotation Separation Of Chromite From Silica Sand Chapter 1 : Company Profile a product of the uranium milling process is .
Jul 16, 1985· What is claimed: 1. In a froth flotation process for separating silica from iron ore, which comprises frothing said ore in an aqueous medium in the presence of a cationic silica collector selected from ether amines of the formula: ROCH 2CH 2CH 2NH 2. wherein RO is derived from a mixture of normal alcohols, consisting predominantly of C 8 and C 10 carbon number alcohols, the ...
1. a method for separating silicates from the titanium values in a titaniferous iron ore which comprises grinding the ore to 60 mesh size, pulping the ground ore in aqueous media, acidifying the pulp to a ph between about and by adding thereto an acid solution containing an ionizable fluoride ion, adding starch to said acidified pulp to depress the titanium values, adding to said pulp ...
Abstract: This invention relates to the use of a primarybranched aliphatic ether monoamine, 3nonyloxypropylmonoamine, its ethoxylated or propoxylated derivatives and partial acid salts thereof, as a major or minor constituent in the formulation of superior silica flotation collectors. Such collectors are employed in the separation of silica from iron ore, phosphate, and other valuable ores.
A method of beneciating iron ores containing silicabearing gangueby froth flotation which comprises the steps of making a pulp of ore having a particle size suitable for use as otation feed, subjecting the pulp to two successive conditioning operations, in the first with an effective amount of an anionic reagent selected from the group ...
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