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  • Understanding the differential depression of tetrasodium

     · Starch showed unsatisfactory depression effect on specularite/chlorite separation while TGD exhibited excellent selective depression for chlorite with recovery of 16.73 in direct flotation with 14.4 mg/L DDA at pH 10. However the floatability of specularite was not affected with recovery of 92.41 at the same condition.

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  • 2011 Wednesday Sintering NanowireScribd

     · 2011 WednesdayFree download as PDF File (.pdf) Text File (.txt) or read online for free. 2011 Wednesday

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  • Investigation of the specularite/chlorite separation using

    An attempt was conducted for the separation of specularite/chlorite with chitosan as a novel depressant through microflotation tests Zeta potential measurements adsorption tests FT-IR and XPS

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  • A new collector used for flotation of oxide minerals

     · Dodecylamine has stronger collecting performance calcitethan otherthree minerals. When collectorconcentration gets flotationrecovery achieves equilibrium namely flotationrecovery keeps invariable continualrise concentration.Fig.3 Effects dodecylamineconcentration mineralsrecoveries flotationrecoveries quartzincrease collectorconcentration collectingcapability betterthan hematiteclearly.

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  • ether amine flotation iron ore

    Separation of amineinsoluble species by flotation with Flotation Nanobubbles Microbubbles Environmental abstract Amines (alkylamines–ether amines) are employed on a large scale to separate iron ores by reverse flotation of the gangue particles (mostly quartz and silicates) Quartz gangue particles coated with amine collector are dumped in tailings dams as concentrated pulps

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  • iron ore flotation machines for hematite separation

    Understanding the differential depression of tetrasodium glutamate diacetate on the separation of specularite and chlorite Intensifi ion of the Reverse Cationic Flotation of Hematite the iron ore concentrate quality and iron recovery in a laboratory flotation machine. These parameters have

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  • The Chinese Journal of Process Engineering

    Flotation behavior of aegirite was investigated by single mineral flotation tests at different pH values and Fe3 concentrations which dodecylamine (DDA) was used as the collector. The effect of iron ion on the separation behavior of aegirite and specularite was studied by using artificial mixed minerals flotation.

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  • Flotation Separation of High Sulfur Lead-Zinc Ore

    According to the refractory lead-zinc ore properties with high pyrite the experimental studies were conducted on floatation reagent conditions and closed circuit tests for comprehensive recovering of all types useful minerals. In comparison to the test results of different process flowsheets and different types of flotation reagents adopting prior flotation lead (Pb)—Zn selective flotation

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  • Iron Ore Direct Flotation With Sodium Oleate Scielo

    Flotation Separation Of Specularite From Chlorite Using. Studies on iron ore flotation began in 1931 and revealed the following flotation routes the direct anionic flotation of iron oxides and the reverse anionic or cationic flotation of quartz.Using sodium oleate as a collector micro scale flotation testing identified conditions for selective separation of pyrolusite and hematite.

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  • (PDF) The effect of selective adsorption of dissolved

    The separation of specularite from aegirite is challenging due to the similar floatability. at pH 10 with 6 Â 10-5 mol/L dodecylamine. The alkalified pretreatment only affected the flotation

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  • The flotation of quartz from iron minerals with a combined

     · Dodecylamine chloride shows the same selectivity for the flotation separation of quartz from magnetite and specularite in the pH range of 6–12 and recovery of magnetite and specularite is closely 40 –60 and the recovery of quartz is above 85 (see Fig. 1).

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  • Flotabilities of Iron Minerals and Quartz in Flotation

    During practical production siderite has an influence on flotation efficiency to hematite and magnetite. 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.

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  • Experimental Study on Magnetic Roasting of Low Grade

    Along with the continuously rose of the iron ore price and the Chinese iron ore quantity demanded Iron ore self-sufficient rate has become the bottleneck of Chinese steel industry development. In order to increase Chinese ore self-sufficiency rate the paper study the xinjiang region low grade specularite. When the crude ore grade is 35 the mass percent of reducing agent pulverized coal is

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  • Minerals Free Full-Text Surface Properties and

    The flotation results showed that the hydrophobicity of specularite was higher than that of aegirite with dodecylamine (DDA) as the collector. It is infeasible to separate specularite from aegirite by flotation using starch as the depressant and research of effective reagents with high affinity to the element Si is the subclinical breakthrough

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  • Flotation separation of specularite from chlorite using

    Introduction

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  • New Flotation Technology Research on Carbonate-Containing

    A new flotation technology of carbonate-containing hematite was introduced in this paper The results show that iron minerals are mainly composed of hematite siderite magnetite limonite ankerite quartz hornblende and a small amount of chlorite etc. The increase of iron carbonate can deteriorate the normal flotation of hematite but now a new flotation technology can weaken the negative

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  • The Chinese Journal of Process Engineering

    In order to research the effect of water quality on the separation of specularite and chlorite the effect and mechanism of Ca2 and Mg2 on the flotation behavior of specularite and chlorite using dodecylamine (DDA) as the collector were studied via micro-flotation tests Zeta potential measurements Boltzmann theoretical analyses solution

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  • Utilization of novel ester-containing quaternary

     · When the concentration of dodecylamine at 0.271 mmol/L efficiency of classification got its maximum of 30.51 while with a dosage of M-302 (0.159 mmol/L) the maximum efficiency of classification reached 30.82 . It indicates that M-302 has better selectivity and stronger collectability to silicates than DDA-HCl which can be used as an

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  • Understanding the differential depression of tetrasodium

     · Starch showed unsatisfactory depression effect on specularite/chlorite separation while TGD exhibited excellent selective depression for chlorite with recovery of 16.73 in direct flotation with 14.4 mg/L DDA at pH 10. However the floatability of specularite was not affected with recovery of 92.41 at the same condition.

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  • metallurgical coke production Topics by Science.gov

     · The first a sulphation roast/water leach residue was processed to float lead sulphate comparing dodecylamine and xanthate collectors. From the second a neutralization residue gypsum was recovered by reverse flotation of ferric hydroxide comparing oleate and sulphonate collectors. In both cases further upgrading by acid leaching was

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  • Effect of sodium alginate on reverse flotation of

    Given the gradual increase in the chlorite content of hematite ores pulp properties seriously deteriorate during flotation. The traditional anion reverse flotation of hematite cannot effectively eliminate the effects of chlorite leading to a significant decrease in the total Fe (TFe) grade of the concentrate. In this work the effect of sodium alginate on the reverse flotation of hematite

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  • (PDF) The effect of selective adsorption of dissolved

    The separation of specularite from aegirite is challenging due to the similar floatability. at pH 10 with 6 Â 10-5 mol/L dodecylamine. The alkalified pretreatment only affected the flotation

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  • Iron Ore Beneficiation Iron Ore IronScribd

     · AUTHOR KEYWORDS Extremely poor iron ore Low-intensity magnetic separation Stage grinding and stage separation Tailing discarding at a coarser size DOCUMENT TYPE Conference Paper SOURCE Scopus Wang W.-Z.a b Jia Q.-M.a Yang C.-G.c Experimental research on mineral processing technique of a Brazilian specularite (2012) Advanced

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  • A new collector used for flotation of oxide minerals

     · specularite 11−14 . The purpose of this work is to synthesize one kind of new collectors containing a hydrocarbon chain of dodecylamine while the flotation recovery of hematite with ND as collector is poorer than that with dodecylamine. So ND can be used

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  • ph needed for magnetite flotation process

    Treatment and Recycling of the Process Water in Iron Ore . The samples for flotation were taken from onsite samples of flotation which were ground to 95 passing 0.045 mm and contained 34.90 specularite and hematite 8.70 magnetite 0.20 limonite 39.40 quartz 11.40 chlorite and hornblende and 4.90 calcite and dolomite.

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  • Understanding the differential depression of tetrasodium

     · Starch showed unsatisfactory depression effect on specularite/chlorite separation while TGD exhibited excellent selective depression for chlorite with recovery of 16.73 in direct flotation with 14.4 mg/L DDA at pH 10. However the floatability of specularite was not

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  • Flotation separation of specularite from chlorite using

    Flotation separation of specularite from chlorite using propyl gallate as a collector Xiangpeng Gao a Fugang Zhao b Mingyang Li ac and Yiming Hu a Separation of specularite from iron-containing sili cate iron ore is challenging due to the similar surface

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  • New Flotation Technology Research on Carbonate

    A new flotation technology of carbonate-containing hematite was introduced in this paper The results show that iron minerals are mainly composed of hematite siderite magnetite limonite ankerite quartz hornblende and a small amount of chlorite etc. The increase of iron carbonate can deteriorate the normal flotation of hematite but now a new flotation technology can weaken the negative

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  • iron ore flotation machines for hematite separation

    Understanding the differential depression of tetrasodium glutamate diacetate on the separation of specularite and chlorite Intensifi ion of the Reverse Cationic Flotation of Hematite the iron ore concentrate quality and iron recovery in a laboratory flotation machine. These parameters have been selected as developed and patented a

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  • lib.kust.edu.cn

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  • ph needed for magnetite flotation process

    Treatment and Recycling of the Process Water in Iron Ore . The samples for flotation were taken from onsite samples of flotation which were ground to 95 passing 0.045 mm and contained 34.90 specularite and hematite 8.70 magnetite 0.20 limonite 39.40 quartz

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  • Common Hematite Flotation Methods and Introduction of

     · The relevant data show that when the dosage of dodecylamine is in the range of 120 180g/t the mineral processing indicators are good. The grade of iron concentrate can up to 70 and the recovery rate can reach more than 75 . (2) Strong magnetic separation-flotation separation

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  • The effect of selective adsorption of dissolved aegirite

     · Single mineral flotation experiments indicated that acidified pretreatment significantly reduced the floatability of aegirite (from 78.4 to 15.1 ) and specularite (from 88.7 to 38.4 ) at pH 10 with 6 10-5 mol/L dodecylamine. The alkalified pretreatment only affected the flotation of aegirite (from 78.4 to 16.3 ) at pH 10 while

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  • Flotation separation of specularite from chlorite using

    Flotation separation of specularite from chlorite using propyl gallate as a collector. Xiangpeng Gao a Fugang Zhao b Mingyang Li ac and Yiming Hu a a Key Laboratory of Metallurgical Emission Reduction Resources Recycling Anhui University of Technology Ministry of Education Ma anshan 243002 China. E-mail my.l ahut.edu.cn yiminghu ahut.edu.cn b Sinosteel Maanshan Institute of

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  • 「ore flotation separation lifting mechanism」

    ore flotation separation lifting mechanism. Froth Flotation Process Detailed Explanation With Diagrams In ore/mineral beneficiation froth flotation is a method by which commercially important minerals are separated from impurities and other minerals by collecting them on the surface of a froth layer.

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  • Advanced Materials Research Vol. 454 p. 4 Scientific

    In order to increase Chinese ore self-sufficiency rate the paper study the xinjiang region low grade specularite. When the crude ore grade is 35 the mass percent of reducing agent pulverized coal is 12 roasting temperature is 800°C roasting time is 50 min milling fineness is 90 passing 0.074 mm and the magnetic induction is 84kA/m

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  • Understanding adsorption of amine surfactants on the

    1. Introduction. Froth flotation a common and critical process is frequently used to remove quartz (gangue mineral) from valuable minerals such as iron ores zinc oxide ores magnesite et al. .During the processing of mineral flotation separation an effective collector for recovering minerals is an essential prerequisite .For quartz amine surfactants have great superiority to get

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  • Flotabilities of Iron Minerals and Quartz in Flotation

    During practical production siderite has an influence on flotation efficiency to hematite and magnetite. 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.

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  • 2nd International Symposium on High-Temperature

    2nd International Symposium on High-Temperature Metallurgical Processing 140th Annual Meeting Exhibition Check out these new proceeding volumes from the TMS 2011 Annual Meeting available from publisher John Wiley Sons 2nd International Symposium on High-Temperature Metallurgical Processing Energy Technology 2011 Carbon Dioxide and Other Greenhouse Gas Reduction

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  • Mingyang LI Lecturer PhD Anhui University of

    In order to research the effect of Fe 3 and Na dissolved from aegirite on the flotation of specularite and ae• girite in dodecylamine system single mineral flotation experiment was carried

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  • Understanding adsorption of amine surfactants on the

    The schematic drawing of dodecylamine layer adsorbed on negatively charged surface as a function of pH . With the development of computational tools and resources adsorption mechanisms of amine surfactant on quartz surface have been explicitly demonstrated at the micro-level with quantum mechanical and atomistic molecular dynamic (MD

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  • Design and flotation performance of a novel hydroxy

    Abstract Based on the surface difference of hematite and quartz in solution a hydroxyl-containing polyamine cationic surfactant was designed and screened with the assistant of computer simulation (molecular dynamics (MD) simulation and density functional theory (DFT) calculation) to enhance the separation efficiency in the reverse flotation system of hematite ore.

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