Products

separation of apatite and dolomite by flotation zhong

Improving flotation separation of apatite from dolomite ...

01/09/2020  Froth flotation is widely used as an effective method for separating apatite from dolomite. However, it is of difficulty to realize the efficient separation of apatite and dolomite using the traditional fatty acid collectors without any depressants due to their similar physicochemical properties.

More

Flotation Separation of Apatite From Dolomite Using ...

Suitable separation of apatite from dolomite was achieved with dodecylamine hydrochloride in the presence of sodium chloride. Zeta potential measurements revealed that sodium chloride acts as an indifferent electrolyte for dolomite, but causes a shift in the iso-electric point of apatite.

More

The role of sodium alginate in the flotation separation of ...

01/08/2020  The flotation results show that SA can completely depress dolomite with a slight effect on apatite flotation in pH 8–11. The contact angle tests and adsorption tests indicate that depressant SA absorbed onto both apatite and dolomite surfaces and the adsorption intensity of the latter was greater than that of the former.

More

Flotation of Dolomite from Apatite - MDPI

Abstract:In this study, the effect of sodium pyrophosphate (NaPP) on the separation of apatite from dolomite by flotation was systematically investigated. Flotation results revealed that NaPP could selectively depress the flotation of apatite, thus realizing the

More

the Wettability of Apatite and Dolomite

Flotation has been the most widely adopted technique for the separation of dolomite from apatite for this kind of magnesium (calcium) phosphate ore, and an anionic collector, such as sodium oleate, is usually used in the acidic pulp for reverse flotation [1–3]. Flotation is a separation method based on the di erence of physical and chemical properties between

More

The flotation separation behavior of apatite from calcite ...

01/12/2020  The separation of apatite from calcite has been recognized as one of the most difficult subjects in mineral processing owing to their similar surface properties, thus finding high-efficiency depressants become the key for the separation. In this paper, carboxymethyl chitosan was tested as a potential selective depressant in the separation of apatite and calcite using

More

separation of apatite and dolomite by flotation zhong

dolomite mineral separation separation of apatite and dolomite by flotation zhong Flotation separation of apatite from dolomite using ionic collectors has also been studied by researchers at International Minerals and Chemicals Company (Lawver et al, 1980 and Snow, 1979), followed by Soto and Iwasaki (19)...

More

Effect of sodium pyrophosphate on the flotation separation ...

01/07/2020  Additionally, calcareous phosphate ore is an important natural resource of phosphorus, in which apatite is the major phosphate mineral, while calcite and dolomite are the main gangue minerals , . Reverse flotation is a common method for the separation of apatite from calcareous phosphate ore , , . Since the surface properties of calcium-bearing ...

More

Surface electrical behaviors of apatite, dolomite, quartz ...

The phosphate ore flotation is achieved through the surface electrical behavior difference among apatite, dolomite and quartz, but it is usually affected by the dissolved ions from pulp, especially Ca2+ and Mg2+. The zeta potentials of apatite, dolomite, quartz and phosphate ore in different solutions were measured to discuss the surface electrical behaviors of them in this study.

More

Fatty acid separation of siliceous carbonate phosphates

Point counting and sink/float separation of the 35 x 150- mesh feed, indicated that the apatite particles were not com- pletely liberated from the dolomite and quartz. About 56% of the phosphate occurred as free particles analyzing 3 1.4% P20,, 0.6% MgO, and 3% insol.

More

SEPARATION OF APATITE AND DOLOMITE--《NONFERROUS

Zhong Kangnian; Han Yin;Xie Hengxing ... The separation of apatite and dolomite is studied,In basic medium,the。result of separation of the two minerals depends not only on the depressantsused but also on the structure of flotation circuit.Metamorphic apatite canbe effectively separated from dolomite with a rejection ratio up to 98%,butsedimentary apatite and dolomite cannot be efficiently ...

More

Jongsu Hong's research works Kim Chaek University of

Froth flotation is widely used as an effective method for separating apatite from dolomite. However, it is of difficulty to realize the efficient separation of apatite and dolomite using the ...

More

THE FLOTATIO APATITN OF E AND DOLOMITE IN

flotation of dolomite from apatite. An attemp t has been made to evaluate the mechanism by which orthophosphat ione s depres s apatite flotation. -2-2 Replacement of SO^ ion ons gypsum by HFO^ ion is s found to occur rapidly in solution. Th presence e of CaHPO^* 211^0 o n gypsum surface iss shown using infrare reflectancd spectroscopye . CaHPO^^I^O is isomorphous with gypsum and has identical ...

More

Minerals Free Full-Text Effect of Sodium Pyrophosphate on the Reverse Flotation of Dolomite from Apatite

NaPP showed selective depression of apatite, thus realizing the preferential flotation separation of apatite from dolomite. Based on the results of zeta potential and contact angle measurements, and XPS analyses, it was concluded that NaPP occupied active Ca sites and hindered the adsorption of NaOL onto apatite surface. As for dolomite, although the presence of NaPP interfered with the ...

More

Minerals Free Full-Text Effects of Metal Ions on the Flotation of Apatite, Dolomite and Quartz

The effects of Ca2+, Mg2+, Al3+, and Fe3+ on the flotation behaviors of apatite, dolomite and quartz were investigated through a micro-flotation test, and the influence of calcium ions on the flotation of these minerals was further elucidated by solution chemistry study, zeta potential measurement, and X-ray photoelectron spectroscopy (XPS) analyses. The results indicate that an appropriate ...

More

A Review of Flotation Separation of Mg Carbonates (Dolomite and Magnesite

minerals Review A Review of Flotation Separation of Mg Carbonates (Dolomite and Magnesite) Darius G. Wonyen 1,†, Varney Kromah 1,†, Borbor Gibson 1,† ID, Solomon Nah 1,† and Saeed Chehreh Chelgani 1,2,* ID 1 Department of Geology and Mining Engineering, Faculty of Engineering, University of Liberia, P.O. Box 9020 Monrovia, Liberia; [email protected] (D.G.W.);

More

(PDF) Separation of dolomite from phosphate minerals by flotation with a new amphoteric surfactant as collector

Commercial-grade dodecyl-N-carboxyethyl-N-hydroxyethyl-imidazoline, a new amphoteric surfactant, has been found to be a good collector for the separation of dolomite and phosphate by flotation.

More

Surface electrical behaviors of apatite, dolomite, quartz and

The phosphate ore flotation is achieved through the surface electrical behavior difference among apatite, dolomite and quartz, but it is usually affected by the dissolved ions from pulp, especially Ca2+ and Mg2+. The zeta potentials of apatite, dolomite, quartz and phosphate ore in different solutions were measured to discuss the surface electrical behaviors of them in this study.

More

Fatty acid separation of siliceous carbonate phosphates

The selective flotation separation of the carbonate and phosphate from siliceous constituents of the matrix at various pH levels and collector dosages are dis- cussed. In the carbonate flotation stage, about 70% of the MgO was rejected in the froth. The phosphate flotation stage produced concentrates analyzing about 31% P 0 , 0.7% MgO, and 4% insol. The overall P,O, recovery ? In 5 the two ...

More

Bioflotation of apatite and quartz: Particle size effect on the rate

The results showed that the bioflotation rate of apatite is higher, achieving flotability values of around 92% and 52% for apatite and quartz, respectively, after 7 minutes of flotation. Also, it was observed that the bioflotation rate of the apatite decreased as the particles sizes decreased, in contrast to the bioflotation rate of quartz, which increased. Finally, the first-order kinetic ...

More

SEPARATION OF APATITE AND DOLOMITE--《NONFERROUS

Zhong Kangnian; Han Yin;Xie Hengxing ... The separation of apatite and dolomite is studied,In basic medium,the。result of separation of the two minerals depends not only on the depressantsused but also on the structure of flotation circuit.Metamorphic apatite canbe effectively separated from dolomite with a rejection ratio up to 98%,butsedimentary apatite and dolomite cannot be efficiently ...

More

SEPARATION OF APATITE AND DOLOMITE--《NONFERROUS

The separation of apatite and dolomite is studied,In basic medium,the。result of separation of the two minerals depends not only on the depressantsused but also on the structure of flotation circuit.Metamorphic apatite canbe effectively separated from dolomite with a rejection ratio up to 98%,butsedimentary apatite and dolomite cannot be efficiently separated frcm eachother.In acid

More

THE FLOTATIO APATITN OF E AND DOLOMITE IN

flotation of dolomite from apatite. An attemp t has been made to evaluate the mechanism by which orthophosphat ione s depres s apatite flotation. -2-2 Replacement of SO^ ion ons gypsum by HFO^ ion is s found to occur rapidly in solution. Th presence e of CaHPO^* 211^0 o n gypsum surface iss shown using infrare reflectancd spectroscopye . CaHPO^^I^O is isomorphous with gypsum and has identical ...

More

One More Solution to Dolomite/Apatite Separation Problem

One More Solution to Dolomite/Apatite Separation Problem H. El-Shall', A. E-Midany', S. Svoronos2, R. Stana and B. Moudgil' Particle Engineering. Research Center Materials Science and Engineering Department 2 Chemical Engineering Department University of Florida, Gainesville, Florida, USA Abstract Dolomite, (Ca, Mg) CO3 represents a problematic impurity in phosphate deposits in different parts ...

More

Dolomite-apatite separation by amphoteric collector in ...

Bioflotation represents one of the growing trends to enhance the selectivity of conventional flotation processes. It utilizes the micro-organisms to replace or to interact with the chemical reagents to increase the gap between surface properties of similar minerals and to enhance the separation selectivity. In this work, dolomite-phosphate separation was investigated using amphoteric collector ...

More

Effect of Sodium Pyrophosphate on the Reverse Flotation of ...

NaPP showed selective depression of apatite, thus realizing the preferential flotation separation of apatite from dolomite. Based on the results of zeta potential and contact angle measurements, and XPS analyses, it was concluded that NaPP occupied active Ca sites and hindered the adsorption of NaOL onto apatite surface. As for dolomite, although the presence of NaPP interfered with the ...

More

Effects of Metal Ions on the Flotation of Apatite ...

The effects of Ca2+, Mg2+, Al3+, and Fe3+ on the flotation behaviors of apatite, dolomite and quartz were investigated through a micro-flotation test, and the influence of calcium ions on the flotation of these minerals was further elucidated by solution chemistry study, zeta potential measurement, and X-ray photoelectron spectroscopy (XPS) analyses. The results indicate that an appropriate ...

More

Surface Features of Fluorapatite and Dolomite in the ...

The separation of dolomite from apatite determines the success of the phosphate flotation to some extent. Separating dolomite from apatite in an efficient and economically way is difficult for a collophane ore. Collophane is a type of unique phosphate ore containing cryptocrystalline apatite . In a collophane ore, extra-fine minerals of apatite and dolomite may associate with each other to ...

More

dolomite flotation test - Krige Lodge

Separation of dolomite from phosphate minerals by PDF fileinsight into the flotation of dolomite and phosphate minerals so as to facilitate the beneficiation of low-grade phosphate ore. Experimental Materials read more. FLOTATION ROUTES FOR A PHOSPHATE ORE BEARING PDF fileFLOTATION ROUTES FOR A PHOSPHATE ORE BEARING apatite flotation, test T3, is

More

Bioflotation of apatite and quartz: Particle size effect ...

The results showed that the bioflotation rate of apatite is higher, achieving flotability values of around 92% and 52% for apatite and quartz, respectively, after 7 minutes of flotation. Also, it was observed that the bioflotation rate of the apatite decreased as the particles sizes decreased, in contrast to the bioflotation rate of quartz, which increased. Finally, the first-order kinetic ...

More

THE FLOTATIO APATITN OF E AND DOLOMITE IN

flotation of dolomite from apatite. An attemp t has been made to evaluate the mechanism by which orthophosphat ione s depres s apatite flotation. -2-2 Replacement of SO^ ion ons gypsum by HFO^ ion is s found to occur rapidly in solution. Th presence e of CaHPO^* 211^0 o n gypsum surface iss shown using infrare reflectancd spectroscopye . CaHPO^^I^O is isomorphous with gypsum and has identical ...

More

SEPARATION OF APATITE AND DOLOMITE--《NONFERROUS

The separation of apatite and dolomite is studied,In basic medium,the。result of separation of the two minerals depends not only on the depressantsused but also on the structure of flotation circuit.Metamorphic apatite canbe effectively separated from dolomite with a rejection ratio up to 98%,butsedimentary apatite and dolomite cannot be efficiently separated frcm eachother.In acid

More

Dolomite-apatite separation by amphoteric collector in ...

Bioflotation represents one of the growing trends to enhance the selectivity of conventional flotation processes. It utilizes the micro-organisms to replace or to interact with the chemical reagents to increase the gap between surface properties of similar minerals and to enhance the separation selectivity. In this work, dolomite-phosphate separation was investigated using amphoteric collector ...

More

Surface Electrical Behaviors of Apatite, Dolomite, Quartz ...

The phosphate ore flotation is achieved through the surface electrical behavior difference among apatite, dolomite and quartz, but it is usually affected by the dissolved ions from pulp, especially Ca2+ and Mg2+. The zeta potentials of apatite, dolomite, quartz, and phosphate ore in different solutions were measured to discuss the surface electrical behaviors of them in this study.

More

Surface Features of Fluorapatite and Dolomite in the ...

The separation of dolomite from apatite determines the success of the phosphate flotation to some extent. Separating dolomite from apatite in an efficient and economically way is difficult for a collophane ore. Collophane is a type of unique phosphate ore containing cryptocrystalline apatite . In a collophane ore, extra-fine minerals of apatite and dolomite may associate with each other to ...

More

Cellulase as a new phosphate depressant in dolomite ...

Meanwhile, apatite is depressed by depressants such as different acids, various organic and inorganic salts (Sis and Chander, 2003). 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). The ...

More

US3405802A - Flotation of apatite - Google Patents

flotation apatite ore pulp sulphonate Prior art date 1964-07-20 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 US470574A Inventor Preller Gustav Schoeman Schoeman Barend Jacobus Klerk Current Assignee (The listed ...

More

apatite and calcite separation by flotation

apatite and calcite separation by flotation. apatite and calcite separation by flotation Grinding Mill China Process for the separation of minerals by flotation It . Get Price Effect of Sodium Chloride on Dolomite Flotation. Flotation separation of apatite from dolomite using cationic collectors has been studied in the past. The role of the ...

More

Bioflotation of apatite and quartz: Particle size effect ...

The results showed that the bioflotation rate of apatite is higher, achieving flotability values of around 92% and 52% for apatite and quartz, respectively, after 7 minutes of flotation. Also, it was observed that the bioflotation rate of the apatite decreased as the particles sizes decreased, in contrast to the bioflotation rate of quartz, which increased. Finally, the first-order kinetic ...

More

Minerals Engineering International Online - Froth ...

Minerals Engineering International: Froth Flotation. Haoran Sun, Fang Han, Wan-zhong Yin, Jongsu Hong, Bin Yang, Modification of selectivity in the flotation separation of magnesite from dolomite, Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 606, 2020 Juliana Angélica Evangelista de Carvalho, Paulo Roberto Gomes Brandão, Andreia Bicalho Henriques, Priscila Silva de ...

More