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carbonate depression in flotation

Cellulase as a new phosphate depressant in dolomite ...

Reverse flotation of carbonate gangue using fatty acid with depression of the phosphate mineral is one of the more promising selective separation techniques that have been tried by several researchers (Zheng and Smith, 1997, Guimaráes, 2005, Antony, 2006). ...

Chemistry Of Pyrite Depression In Flotation

depression carbonate depression in flotation. Pyrite Depression By Reduction Of Solution Oxidation Potential----- ABSTRACT A study of pyrite depression by reducing agents with potassium ethylxanthate as collector indicates that pyrite may be depressed effectively in the flotation …

THERMOMECHANICAL ASPECT OF SELECTIVE FLOTATION OF ...

Selective flotation is one of the most complex activities in mineral dressing as sulfides and copper, zinc and iron have ... tions of sulfate-ions and carbonate-ions, which indicates the reduction of the both in the surface layer 2.7 and 2.4 times, re-spectively.

TECHNICAL NOTE THE EFFECT OF pH MODIFIER ON THE …

Effect of pH modifier on flotation of celestite 991 at 10 -2 M, giving rise to intense mineral depression. G~ilvez [4], found a similar effect of the depressant Na2SiO 3 when working in …

EP0453677A1 - Depression of the flotation of silica or ...

A flotation process is disclosed wherein the selectivity to the valuable mineral is improved by the depression of silica or siliceous gangue by the use of a hydroxy-containing compound such as an alkanol amine. The process is useful in the flotation of oxide minerals as well as in sulfide flotation.

depression of cadmium in zinc flotation

Synthetic dyes are commonly used for graphite depression in polymetallic flotation circuits; however, these dyes can be very expensive. The aim of this study is to evaluate performance of certain lowcost alternative depressants for a complex leadzinc (PbZn) ore rich in graphite (GrC) on a conventional mini pilotscale flotation circuit.

Use of depressants in the direct flotation of a silicate ...

In this study, conducted in a laboratory scale, eight different depressants, organic and inorganic, were tested in the direct flotation of a Brazilian silicate-carbonate phosphate ore. The best performance in the depression of calcite and silicates was achieved with cassava starch.

Depression of gangue minerals using tailor-made CMCs in ...

Carboxymethyl cellulose, CMC, is widely used in mineral processing as a flotation depressant, mainly for the depression of carbonate and talcaceous gangue in the flotation of Cu-Ni sulfide and PGM ...

Understanding the depression mechanism of sodium citrate ...

Mar 05, 2020· The principle of reverse flotation is that valuable minerals are sunk [4,5]. Due to these minerals similar soluble properties and structures, direct flotation is inefficient. Therefore, reverse flotation of carbonate gangue and depression of apatite has been practiced by predecessors [4,6]. Thus, the understanding of depression mechanism of ...

depression carbonate depression in flotation

depression carbonate depression in flotation. Solution chemistry of carbonate minerals and its effects . Jun 30 2017 · The effects of carbonate minerals (dolomite and siderite) on the flotation of hematite using sodium oleate as a collector were investigated through flotation tests supplemented by .

Calcite-Apatite Flotation - Columbia University

carbonate and phosphate can be somewhat altered.. in the presence of one another. Carbonate and phosphate species can be expected to chemisorb - --on the calcite surface and thus can compete with oleate for the surface Casites resulting in flotation depression. Ca on the ~ - - -

The Art of Talc Flotation for Different Industrial ...

carbonate depressant, satisfy the requirement of paper coating, ceramics production, functional filler, and pharmaceuticals applications. Tailings could also be used in carpets, roofs, and tiles production industries. Keywords Flotation, Depression, Attrition Scrubbing, Carbonate Separation 1. Introduction

Calcite Depression In Phosphate Flotation

Depression Carbonate Depression In Flotation. Carbonate and phosphate can be somewhat altered in the presence of one another Carbonate and phosphate species can be expected to chemisorb on the calcite surface and thus can compete with oleate for the surface Casites resulting in flotation depression Ca on the Get Price.

How calcite and silica can be depress in froth flotation ...

2- How about direct flotation of diaspore by utilizing oleic acid or sodium oleate? in this case sodium silicate will be depressant of cays and sodium carbonate could be used as dispersing agent.

DEPRESSING REAGENT FOR MINERAL FLOTATION AND METHOD …

Flotation of zinc-oxide-containing minerals with amines: depression of calcitic barytic gangues and slimes. Replacement of all or a portion of the possible sodium carbonate or silicate and in certain cases, the possibility of floating in the presence of slimes, provided …

The Art of Talc Flotation for Different Industrial ...

This was relatively improved by the use of a selective (quaternary amine) talc collector and in presence of a selective carbonate depressant (soda ash). Flotation of the fine ground talc (less than 22 μm) produced a talc concentrate assaying 6.90% L.O.I. with a yield recovery of 62.91%.

The depression of quartz in sulphide flotation

flotation pulps for the depression of gangue is . wides~readJ . and it is desirable that the mechanism of the depressant aetion be elucidated to allow close control of the flotation process to be obtained. Two probable mechanisms for sodium silicate depression of gangue have been postulated (lO), '": ~. ( i) surtace closure (10) Taggart, A.F.

how can i depress carbonates in flotation

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Solution chemistry of carbonate minerals and its effects ...

Jun 30, 2017· The effects of carbonate minerals (dolomite and siderite) on the flotation of hematite using sodium oleate as a collector were investigated through flotation tests, supplemented by dissolution measurements, solution chemistry calculations, zeta-potential measurements, Fourier transform infrared (FTIR) spectroscopic studies, and X-ray photoelectron spectroscopy (XPS) analyses.

Effect of depressants in the selective flotation of ...

flotation of smithsonite and calcite were analyzed. In order to depress calcite, sodium hexametaphosphate (SHMP), water glass (WG), carboxymethyl cellulose (CMC) and lignosulfonate calcium (LSC) were used as depressants. he flotation separation of smithsonite and calcite was T conducted in the mixed mineral system with a varied weight ratio.

Ash Depression in Fine Coal Flotation Using a Novel ...

sized and used for the selective depression of ash-forming mineral matter in fine coal flotation. The influence of polymer dosage, polymer conditioning time, pulp pH and impeller speed were investigated. The effect of commercially available polyacrylamide (PAM) polymer and sodium metasilicate dispersant on the flotation process were also

Calcite Depression In Phosphate Flotation

flotation routes for a phosphate ore bearing silicate-carbonate gangue. concentration of a phosphate ore bearing a silicate-carbonate gangue: (i) bulk apatite and calcite flotation followed by calcite flotation in the presence of phosphoric and citric acids;. (ii) calcite flotation .... mechanism of apatite depression …

froth flotation graphite depression

calcite depression in phosphate flotation. Aug 31 2017· carbonate depression in flotation. flotation routes for a phosphate ore bearing silicate carbonate gangue (ii) calcite flotation in the presence of carbon dioxide followed by apatite iii. carbonate flotation with oleic acid at pH . mechanism of apatite depression and. Read More.

mechanisms of phosphate depression flotation

Depression of Mg Carbonates Various investigations have indicated that flotation of Mg carbonates poses several difficulties where the fatty acids and their derivatives which are used as collectors have a poor selectivity for carbonates and phosphate minerals [47] carbonate depression in flotation gkijnl

carbonate depression in flotation

However, if the flotation recoveries of gold and sulfide are unsatisfactory, reverse flotation of the carbonate minerals is a possible alternative. Get Price calcite depression in phosphate flotation