patent silica iron flotation

Recycling Free Full

Jan 11 2021 0183 32 Considering sustainable mining the use of seawater in mineral processing to replace conventional water is an attractive alternative especially in cases where this resource is limited However the use of this aqueous medium generates a series of challenges specifically in the seawater flotation process it is necessary to adapt traditional reagents to the aqueous medium or to propose...

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PDF Reagents used in the flotation of phosphate ores A

US Patent 4 364 824 agents used in reverse iron ore flotation the surface characteristics of minerals commonly present in iron ores eg iron oxides quartz alumina-bearing minerals...

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Optimization of Flotation for the Reduction of Heavy

oil flotation - British Patent 488/1860 Miller Parekh 1999 Ahmad 1951 Later in 1877 the Bessel brothers patented and built the first commercial flotation plant in Dresden Germany to clean graphite ore - German Patent 42 Class 22 The froth flotation process was invented in 1905 simultaneously by AH...

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Comparative studies of reverse cationic/anionic flotation

The results of flotation tests showed that sodium silicate performed better as depressant of iron oxide but had little effect on silica flotation in the apatite- iron oxide- silica flotation system...

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silica sand iron flotation

Summary of the Silica Sand Processing Plant Equipmentvery successful for silica sand flotation because it willSilica Patent USFroth flotation of silica from iron Get Price silica sand iron flotation drive-inn Iron ore Wikipedia the free encyclopedia Iron ores are rocks and minerals from which metallic iron can be economically extracted...

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Japan 2000t/d Silica Sand quartz sand Mineral Processing

In 1996 the silica quartz sand project controlled by TOMEN and participated by Takasaki Silica Sand from Japan finally chose Xinhai Mining EPC to provide the one-stop service for mining processing plant including engineer design and research manufacturing and procurement installation commissioning after several companies investigation and comparison...

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Froth flotation of silica or siliceous gangue by Dow

Claim cation Date 270691 F AMERICA 1 A froth flotation process for the separation of silica or siliceous ganguie from mineral values wherein the silica or siliceous gangue and mineral values In particulate form in an aqueous slurry are subjected to froth flotation in the presence of an amine collector and an alkanol amine corresponding to the formula NH 3x wherein x is from 1 to 3 and R is...

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flotation process grinding mesh silica grinding different

silica sand grinding mill silica sand ball mill silica Silica sand also known as silica or quartz sand Silica sand is refractory particles with quartz as the main mineral component and particle size of 0 020mm 350mm It is divided into artificial silica sand and washed sand and scrub sand according to different mining and processing methods Natural silica sand such as selected flotation sand...

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Froth flotation

Froth flotation is a process for selectively separating hydrophobic materials from hydrophilicThis is used in mineral processing paper recycling and waste-water treatment industri Historically this was first used in the mining industry where it was one of the great enabling technologies of the 20th century...

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Froth flotation

Nov 07 2014 0183 32 These tend to be soluble polymers such as starch that selectively coat mineral surfaces and prevent collector from attaching An example of this is in the reverse flotation of silica from iron ore where the silica tailings are floated using a cationic collector at a pH of 85 - 11 leaving behind the iron oxide minerals...

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Removal of hematite from silica sand ore by reverse

Silica is one of the primary main gangue minerals in iron mine tailings and de-silication of iron mines by the reverse flotation method is an economic and effective method Cao et al 2013 Huang...

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US4725351A

A new froth flotation collecting agent and an improved flotation process for beneficiating silica-containing ores particularly phosphate ores are provided In the process silica particles are selectively separated by froth flotation as a froth phase from mineral particles particularly phosphate particles remaining in an aqueous concentrate phase in the presence of a silica-activating...

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kaolin flotation to remove silica Solution for ore mining

Apr 15 2013 0183 32 separation process to remove feldspar and iron from silica Patent US6098810 - Flotation process for separating silica from A separation process is provided for treating a feed material comprising silica feldspar and metal kaolin production dry process...

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Capryl alcohol frother in iron ore flotation process

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 R--O--CH 2--CH 2--CH 2--NH 2 wherein R--O-- is derived from a mixture of normal alcohols consisting predominantly of C 8 and C 10 carbon number alcohols the...

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Mining Chemical Solutions

Slime flotation Ethomeen HT/40 Slime flotation collector Phospholan PE 65 Slime flotation collector Halite flotation Armoflote 619 Suitable for reverse flotation of carnallite Iron Ore magnetite hematite itabirite Silica flotation Armoflote 930 New chemistry for silicate removal from iron ores readily biodegradable and superior ecotoxicity...

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US4422928A

This invention relates to the use of a primary-branched aliphatic ether monoamine 3-nonyloxypropylmonoamine 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 or...

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Developments in the physiochemical separation of iron ore

Jan 01 2015 0183 32 113 Iron ore flotation 1131 Separation of silica from iron ore by flotation In the literature there are several excellent reviews of iron ore flotation with emphasis on the practice in North America by Trahar 1963 Iwasaki 1983 Houot 1983 Nummela and Iwasaki 1986 Uwadiale 1992 Iwasaki 1999 Nummela 1978 and Araujo et al 2005...

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The removal of alumina and silica from iron rejects slime

Jan 01 2011 0183 32 The iron ore slimes were in situ sieved and analysed with 944 present as < 25 microns particl The sub-25 micron fraction contained 588 Fe 574 SiO 2 665 Al 2 O 3 and 015 P The bulk mineralogical analysis of iron ore rejects slime is shown in Table 1 which contained about 13 silica and alumina gangue minerals It was used as...

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Branched alkyl ether amines as iron ore flotation aids

What is claimed is 1 A froth flotation process for separating silica from iron ore which comprises frothing said ore in an aqueous medium in the presence of 01 to 2 pounds per ton of said ore of a water dispersible liquid mixture of aliphatic ether amines having the general formula R--O--CH 2--CH 2--CH 2--NH 2 wherein R is a mixture of methyl branched aliphatic radicals having...

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flotation reagents for removing iron from silica sands

patent silica iron flotation It was shown that using sodium silicate at the selected levels of parameters including dosage of 800 g/t pulp pH of 10 sodium silicate modulus of and solution conditioning time of 6 min improved the selectivity of the apatite/iron oxides flotation significantly but the silica content of the iron concentrate was still higher than required...

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Exploiting the dual functions of polymer depressants in

Sep 01 2006 0183 32 Fig 1 shows the settling behavior of iron oxide in the presence of three different flotation modifiers As can be seen after adding 50 mg/L sodium metaphosphate to a 250 mL suspension containing 5 g fine iron oxide the amount of iron oxide settled to the bottom 50 mL in 2 min was slightly above 20 in the entire pH range tested from 2 to 12...

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PDF Reduction of Reactive Silica from Bauxite

After preparation the sample 90 < 210 μm and 40 < 43 μm with reactive silica and available alumina contents of 59 and 475 respectively was ground with water in a bar mill up to 210 min...

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Barry Wills Blog Flotation 19 Final Report

Dec 09 2019 0183 32 By 1908 4 years after its patent flotation was working well for bulk flotation of zinc tailings but the search was then on for means of treating primary sulphides which led to the development of xanthate collectors selective activators and depressants and still the search goes on for more efficient and environmentally friendly reagents...

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US2423022A

iron silica flotation Prior art date 1944-04-10 Legal status The legal status is an assumption and is not a legal conclusion Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed Expired - Lifetime Application number...

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Brazilian company patents innovative dry iron ore

May 06 2016 0183 32 Besides the waste generated once the iron extracted is pretty much only sand silica which can be used in the construction of houses schools health facilities and others Therefore this...

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24 questions with answers in SILICA SAND Science topic

Aug 03 2020 0183 32 After scrubbing the sand is processed through magnetic separation and floatation to achieve a product containing more than 95 pure silica containing less alumina and iron View 3 Recommendations...

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US Patent for Upgrading the nickel content from low grade

The nickel content from low grade nickel lateritic iron ore is upgraded by a combined process of segregation and magnetic separation or flotation Ground ore is thoroughly mixed with a small quantity of calcium carbonate calcium sulfate and coke and is sprayed with a solution of sodium chloride to make appropriate pellets These pellets are gradually heated under a neutral or a slightly...

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Froth flotation of silica or siliceous gangue

BACKGROUND OF THE INVENTION 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 eg a pulverulent ore suspended in a liquid whereby a portion of the solids is separated from other finely divided mineral solids eg silica siliceous gangue clays and other...

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Process for purifying silica sand

A process of purifying silica sand comprises grinding sandstone washing and desliming the ground sandstone to remove the major part of the clay-type binder attrition-scrubbing the deslimed sand particles to release further amounts of binder therefrom washing and desliming to remove said binder drying and heating the sand particles treating the hot sand with sulfuric acid to convert the...

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US2388471A

US2388471A US508849A US50884943A US2388471A US 2388471 A US2388471 A US 2388471A US 508849 A US508849 A US 508849A US 50884943 A US50884943 A US 50884943A US 2388471 A US2388471 A US 2388471A Authority US United States Prior art keywords magnetite magnetic particles silicious concentrate Prior art date 1943-11-03 Legal status The legal status is an assumption and is...

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