cellulose xanthate n r mandre and d panigrahi.

(PDF) Dewatering performance of coal fines refuse slurry ...

Dewatering performance of coal fines refuse slurry and development of the water recovery index ... Mandre, N. R., and Panigrahi, D. 1997. Studies on selective flocculation of complex sulphides ...

(PDF) Processing of Low Grade Iron Ore Fines and ...

D. Panigrahi In this paper an attempt has been made to preconcentrate the sulphide minerals from complex sulphide ore by selective flocculation using a modified flocculant such as cellulose xanthate.

Cellulose Xanthate - an overview | ScienceDirect Topics

Cellulose polymers (Fig. 2.32) are made from dissolving pulp.They include cellulose xanthate (a bright orange–colored solution formed by reaction of alkali cellulose with carbon disulfide, which is an intermediate product that on acidification forms regenerated cellulose such as cellophane, rayon, and meat casings), cellulose acetate (a plastic used in films, eyeglass frames, cigarette ...

Narayan R MANDRE | Indian Institute of Technology (ISM ...

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Xanthate - Wikipedia

Xanthate usually refers to a salt with the formula ROCS − 2 M + (R = alkyl; M + = Na +, K +), thus O-esters of dithiocarbonate.The name xanthates is derived from Greek ξανθός xanthos, meaning "yellowish, golden", and indeed most xanthate salts are yellow.They were discovered and named in 1823 by Danish chemist William Christopher Zeise.These organosulfur compounds are important in ...

Minerals Engineering International Online - Reagents ...

Minerals Engineering International: Reagents. O'Connell, D.W., et al, A modified cellulose adsorbent for the removal of nickel(II) from aqueous solutions, Journal of Chemical Technology & Biotechnology, …

Synthesis, properties and performance of organic polymers ...

Synthesis, properties and performance of organic polymers employed in flocculation applications. Vu H. Dao a, Neil R. Cameron * bc and Kei Saito * a a School of Chemistry, Monash University, …

(PDF) Performance optimization of dewatering of coal fine ...

Mandre, N. R., and D. Panigrahi. 1997. Studies on selective flocculation of complex sulphides using cellulose xanthate. International Journal of Mineral Processing 50:177 – 86. doi: 10.1016 ...

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#&%!(&$ ) ! " %$ % D. Tudor '"'%)$ #) &" '#) The Southern African Institute of Mining and Metallurgy P.O. Box 61127 Marshalltown 2107 Telephone (011) 834-1273/7 Fax ...

Mechanisms of Nucleation and Growth of Nanoparticles in ...

Silver–Water Clusters: A Computation of Ag n (H 2 O) m for n = 1–6; m = 1–8 Roger C. Baetzold The Journal of Physical Chemistry C 2017 121 (21), 11811-11823

Application of a statistical design method to the shear ...

Application of a statistical design method to the shear flocculation of celestite with Na-Oleate. ... N.R. Mandre, D. PanigrahiStudies on selective flocculation of complex sulphides using cellulose xanthate. Int. J. Miner. Process., 50 (1997), pp. 177-186.

Cellulose Patents and Patent Applications (Class 524/35 ...

Oct 30, 2017· Abstract: The invention provides a polymer composition comprising from 50 wt % to 99.9 wt % polymer, from 0.1 wt % to 10 wt % nanocellulose as a first nucleating agent, and from 0.01 wt % to 5 wt % of a second nucleating agent. In some embodiments, the polymer is polylactide, the first nucleating agent is lignin-containing nanocellulose, and the second nucleating agent is a sulfur …

Department of Chemistry IITM

Department of Chemistry Indian Institute of Technology Madras Chennai – 600 036 Chemistry Office : +91-44-2257-4200 [email protected]

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using cellulose xanthate N.R. Mandre and D. Panigrahi 187. Pyrite recovery mechanisms in coal flotation S.K. Kawatra and T.C. Eisele 203. Growth and attachment of Thiobacillus ferrooxidans during sulfide mineral leaching Y.R.K. Mirajkar, K.A. Natarajan and P. Somasundaran 211. The behaviour of silica in gold cyanide solutions

Mechanisms of Nucleation and Growth of Nanoparticles in ...

However, if r̅/r* < 2 then d(Δr)/dt > 0 and then the size distribution tends to broaden even within the diffusion controlled growth. Similarly there are a set of equations for surface reaction controlled growth: eq 24 where K R …

Chemical Papers

Vastag, Aleksandra R. Božić, Aleksandar D. Marinković, Miloš K. Milčić, and Ivana N. Stojiljković Vol. 74, 8 Experimental validation of bifurcated hydrogen bond of 2,5-lutidinium bromanilate and its charge …

Minerals | Free Full-Text | Agglomeration-Flotation of ...

In flotation, the size of mineral particles is one of the most important parameters: when the size becomes fine, collision efficiency of the particles and air bubbles becomes low, causing low flotation recovery. To improve the collision efficiency and flotation kinetics, agglomeration using the emulsified oil of finely ground chalcopyrite (D50 = 3.5 μm) was carried out before flotation.

Comparison of selective flocculation of low grade ...

N. R. Mandre 1) + Author Affiliations 1) Department of Fuel and Mineral Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India

Comparison of selective flocculation of low grade ...

May 10, 2018· This study aims to beneficiate low grade goethitic iron ore fines using a selective flocculation process. Selective flocculation studies were conducted using different polymers such as starch amylopectin (AP), poly acrylic acid (PAA), and a graft copolymer (AP-g-PAA). The obtained results were analyzed; they indicate the enhancement of the iron ore grade from 58.49% to 67.52% using AP …

Cellulose Chemistry and Technology

ISSN 2457-9459 (Online) ISSN-L 0576-9787 (Print) 5 Year Impact Factor: 1.022

Efficient separation of fine coal assisted by surface ...

1. Introduction. Froth flotation has been proved to be an effective method to separate fine minerals,, .During a flotation process, the first step is the collision between both hydrophobic and hydrophilic particles with rising bubbles .The naturally hydrophobic particles or weak hydrophobic particles but coated with collector tend to attach to the bubbles and rise to the froth zone while the ...

Recovery of Iron from Iron Ore Slimes by Selective ...

Kumar, R. ; Mandre, N.R. (2017). Recovery of Iron from Iron Ore Slimes by Selective Flocculation. The Journal of the Southern African Institution of Mining and Metallurgy Citation Downloads Reference Manager (RIS) SpreadSheed (CSV)

All‐atom empirical force field for nucleic acids: I ...

Venkat N. Are, Biplab Ghosh, Ashwani Kumar, Rekha Gadre and Ravindra D. Makde, Crystal structure and dynamics of Spt16N-domain of FACT complex from Cicer arietinum, International Journal of …

ИЗСЛЕДВАНЕ ВЛИЯНИЕТО НА ЙОННИЯ СЪСТАВ НА …

0 100000 200000 300000 400000 500000-200 -100 0 100 200 Intensity (kcps) Zeta Potential (mV) Zeta Potential Distribution Record 4: tapioka 0.005%+10mg/l Cu

Studies on selective flocculation of complex sulphides ...

In this paper an attempt has been made to preconcentrate the sulphide minerals from complex sulphide ore by selective flocculation using a modified fl…

Synthesis and Flocculation Behavior of Cationic Cellulose ...

Jan 01, 2009· Water soluble cationic cellulose was synthesized by the reaction between microcrystalline cellulose and 2,3‐epoxypropyltrimethylammonium chloride in a NaOH/urea aqueous solution. The characterization of the cationic cellulose was performed by NMR spectroscopy, elemental analysis, thermogravimetric analysis, and viscosity analysis. The effects of reaction time and molar …

Surface chemical properties and selective flocculation ...

Mandre and Panigrahi (1997), worked on the selective flocculation of complex sulphides using cellulose xanthate. The evaluation of the separation of apatite-dolomite mixture using polyacrylic acid as the selective flocculant was carried out by Mathur et al. (1996) .

Hydrophobic treatment of natural fibers and their ...

Hydrophobic treatment of natural fibers and their composites—A review Azam Ali, Khubab Shaker, Yasir Nawab, Madeha Jabbar, Tanveer Hussain, Jiri Militky, and Vijay Baheti Journal of Industrial …

CdS Nanoclusters: Synthesis, Characterization, Size ...

CdS Nanoclusters: Synthesis, Characterization, Size Dependent Oscillator Strength, Temperature Shift of the Excitonic Transition Energy, and Reversible Absorbance Shift

Adsorption of Cationic Dye (Methylene Blue) from Water ...

Polyaniline nanotubes (PANI NTs) base has been utilized as an adsorbent for the removal of cationic dyes such as methylene blue () from aqueous solution. This observation was evidenced from the …

Magnetically Recoverable Nanocatalysts - Chemical Reviews ...

Dr. Haibo Zhu was born in Hubei, China. He obtained his bachelor degree (Chemical Engineer) and master degree (Organic Chemistry) from Hubei University. He continued his Ph.D. study at the Shanghai Jiao Tong University with Professor Zaiku Xie and obtained his Ph.D…

Studies on selective flocculation of complex sulphides ...

Studies on selective flocculation of complex sulphides using cellulose xanthate. Author links open overlay panel N.R. Mandre D. Panigrahi. Show more. ... the sulphide minerals from complex sulphide ore by selective flocculation using a modified flocculant such as cellulose xanthate. The experiments carried out indicated that the metal grades ...

Adsorption of Cationic Dye (Methylene Blue) from Water ...

Aug 10, 2010· Polyaniline nanotubes (PANI NTs) base has been utilized as an adsorbent for the removal of cationic dyes such as methylene blue () from aqueous solution. This observation was evidenced from the measurements of quartz crystal microbalance (QCM) and UV−visible spectroscopy. Experiments were conducted by varying parameters of initial concentration of and contact time.