Recovery of Apatite From Ore Slimes Using Centrifugal …
The aim of this study is to determine the feasibility of using a centrifugal heavy medium separation (CHMS) method to obtain apatite concentrates from ore slimes (particle size < 45 µm, 4.5% P2O5). The effects of the specific gravity, centrifugal …
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Identification, Characterization and Properties of Apatites
The parameters of unit cell, structure, refractive index, solubility data, PO4/CO3 ratio, surface area, etc., are important parameters for characterization of …
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Cyclonic flotation column of siliceous phosphate ore
Theoretical analysis results show that centrifugal force field can reinforce the mineralization of fine particles as well as decrease the lower limit for efficient flotation. ... Apatite, as the ...
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Browse subject: Centrifuges -- Computer programs
Centrifugal dewatering of Jamaican red mud (U.S. Dept. of the Interior, Bureau of Mines, 1968), ... Laboratory and field measurements of upwelled radiance and reflectance spectra of suspended James River sediments near Hopewell, ... Analysis of monazite, zircon, and apatite from the Southeastern Piedmont (Aiken, South Carolina : ...
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What is the applied centrifugal field at a point equivalent to …
For explanation I would say: The centrifugal field G, at a point 5 cm from the centre of rotation may be calculated using the equation G = ω^2 r, G = (3000)^2 × 5 cm s^-2 = 4.5 × 10^-7 cm s^-2. ← Prev Question Next Question →. Find MCQs & Mock Test ...
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US4610693A
An implanting article which includes a base body composed of a mother material and a surface portion containing dispersed apatite particles. The base body and surface portion are formed in a mold by solidifying the mother material containing apatite particles under centrifugal force. The resulting implanting article has good mechanical properties …
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Centrifugation | PPT
10. A centrifuge is a piece of equipment that puts an object in rotation around a fixed axis (spins it in a circle), applying a potentially strong force perpendicular to the axis of spin (outward). The centrifuge …
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Chapter 11 – Dense Medium Separation (DMS)
Search 221,507,198 papers from all fields of science. Search. Sign ... (CHMS) method to obtain apatite concentrates from ore slimes (particle size < 45 µm, 4.5% P2O5 ... Materials Science. JOM. 2019; The aim of this study is to determine the feasibility of using a centrifugal heavy medium separation (CHMS) method to obtain apatite ...
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Concentrating of Iron, Slag and Apatite Phases from High …
ONLINE ISSN: 1347-5460 PRINT ISSN: 0915-1559 (As of June 25, 2017) Registered articles: 7,310 Article; Volume/Issue/Page; DOI
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Apatite compositions and groundmass mineralogy record …
Apatite compositions have the potential to aid in the discrimination of kimberlites from lamproites (higher LREE, Sr, F, and S, lower Si contents) and …
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Intensification of Water Electrolysis in a Centrifugal Field
In a centrifugal field, just as observed under stationary conditions, the cell polarization behavior was affected significantly by a change in KOH concentration. Figure 8 shows typical results of the cell voltage reduction at a current density of collected in the rotary cell at a scan rate of in two KOH solutions.
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CFD-DEM simulations of particle separation characteristic in
The separation of particles in centrifugal compounding force field is complex due to the interaction of centrifugal force, viscous drag force, inter-particle contact force and particle-particle ...
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The Effects of the Phosphates' Mechanical Activation
In the centrifugal field, mineral grains are brought together by a strong force, whereby the gravitational force acting within a narrow space around particles exceeds weight of the grains by several tenth times. ... Apatite appears in the form of large prismatic crystals which are often cataclased. Kolofanite appears in the form of large ooids ...
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Modelling generation mechanism of defects during …
The vertical centrifugal casting process for manufacturing TiAl valves is shown schematically in Fig. 1.The detailed shape of a TiAl valve is shown in Fig. 2.The TiAl melt is prepared with induction skull melting furnace. 15–17 The TiAl melt pouring from the cold crucible flows through the tundish and arrives at the basin. Driving with the …
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Apatite: Its uses as a mineral and gemstone
Physical Properties. Apatite is best known for its use as an index mineral with a hardness of 5 in the Mohs Hardness Scale. It is usually green in color, but can be yellow, brown, blue, purple, pink, or colorless. These …
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Step annealing and fading studies on EPR signals of Durango apatite …
In order to achieve grains within the nano-size range, the sample was ball milled. For ball milling (hereafter BM), a Retsch centrifugal ball mill, Pulverisette 6, Fritsch (model S 100) was used. The apatite samples were milled for 0 (reference grain size fraction), 4, 8, 12, 24 and 48 h in dry conditions.
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Realizing Bright-Dark Dual-Field Multimode Optical Signals …
Realizing Bright-Dark Dual-Field Multimode Optical Signals in Photochromic Apatite Phosphors for Security Identification Inorg Chem. 2024 Sep 12 ... the BPCF-AG exhibits simultaneous photochromism in a bright field and tetramode luminescence (photoluminescence, afterglow, 980 nm photostimulated luminescence, and 650/532 nm …
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Functional Gradient Metallic Biomaterials: Techniques, …
In this regard, the biomedical field deals with technology development that helps to enhance the quality of human life; hence, each parameter is of crucial importance. ... use the SPS method to fabricate titanium nitride/apatite functionally graded implants with acceptable mechanical properties and new bone formation around the femur of a rat ...
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Structural and crystal-chemical characteristics of the apatite …
Introduction. Recent investigations [1, 2] and earlier works [3, 4] have shown that the mineral of cardiovascular pathological deposits consists of poorly crystalline …
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Model of baddeleyite recovery from dump products of an apatite …
The paper is devoted to developing a model of baddeleyite recovery from dump products of an apatite-baddeleyite processing plant using centrifugal concentrators.
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Using apatite to differentiate metallogenic potential and …
Using apatite to differentiate metallogenic potential and environment of granitic rocks: a case study from the Tongshanling W-Sn-Cu-Pb-Zn ore field, Nanling Range (South China) ... The Tongshanling ore field is one of the most representative W–Sn–Cu–Pb–Zn polymetallic deposits in the central-western Nanling Ore Belt, which developed ...
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Wave Isotope Separation in Super-Intense Centrifugal Fields
The paper deals with waves in gas centrifuges generated by gas samplers. These waves can have a significant influence on the hydrodynamics of gas flows. In gas centrifuges, new physical mechanisms appear due to super-intense centrifugal waves. These mechanisms affect isotope separation in a mixed gas. This paper investigates a …
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The potential for dense medium separation of mineral fines …
ABSTRACT The article makes an effort in consolidating the developments in the field of advanced gravity separation techniques for processing fine particles over the last few decades. ... The aim of this study is to determine the feasibility of using a centrifugal heavy medium separation (CHMS) method to obtain apatite concentrates …
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[PDF] Euler Force-Driven Siphon Valve Control for Precise …
Controlling the fluids in centrifugal microfluidic chips for precise sequential release is critical for multi-step reactions and immunoassays. Currently, the traditional methods of liquid sequential release mainly rely on various types of microvalves, which face the problems of complex operation and high costs. Here, this work presents a method …
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Recycling of Industrial Metals and Materials: Trends in
In a somewhat different field is "Recovery of Apatite from Ore Slimes Using Centrifugal Heavy Media Separation" by Mahmut Altiner. The material recycled is of relatively low value, and environmental concerns may be the main driver. All the three factors studied had an important effect on the grade and the recovery of the apatite …
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Apatite, Ca10(PO4)6(OH,F,Cl)2: Structural …
Thirty-three samples from natural apatite (Ap) solid solutions, ideal structural formula [9]Ca12[7]Ca23([4]PO4)3[3](F,OH,Cl), (Z = 2) were examined with electron-probe microanalysis, synchrotron high-resolution …
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Comparative SEM and TEM analyses of apatite phases
For characterizing each apatite phases based on light elements such as C, N, O, and F, SEM-EDS analysis was carried out in 5 kV and the representative EDS spectra are shown in Fig. 2. Ca peaks in all apatite phases are low because of the low Ca signal yield in 5 kV. Therefore, Ca/P ratio values were obtained in 15 kV. The carbon film of the …
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Adsorptive features of polyacrylamide–apatite composite for …
Micro-composite of polyacrylamide (PAA) and apatite (Apt) was prepared by direct polymerization of acrylamide in a suspension of Apt and characterized by means of FT-IR, XRD, SEM and BET analysis.The adsorptive features of PAA–Apt and Apt were then investigated for Pb 2+, UO 2 2+ and Th 4+ in view of dependency on ion concentration, …
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Multi-compartment centrifugal electrospinning based …
In the technological advance demonstrated here, a combinatorial multi-compartment centrifugal electrospinning (CMCCE) system is developed and demonstrated. A proof-of-concept enabling multiple formulation solution hosting (including combinatorial grading) in a single centrifugal electrospinning system (CES) comprising …
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The Effects of the Phosphates' Mechanical Activation
In the centrifugal field, mineral grains are brought together by a strong force, whereby the gravitational force acting within a narrow space around particles …
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TFS Turbine Field Solutions on LinkedIn: #operations #safety
🔧 Centrifugal Compressors Overhaul! We specialize in the major maintenance (Overhaul) of centrifugal compressors, ensuring their optimal performance and extending their service life.
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Magmatic immiscibility and the origin of magnetite-(apatite) …
The origin of magnetite-(apatite) iron deposits (MtAp) is one of the most contentious issues in ore geology with competing models that range from hydrothermal …
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Apatite Vibro Sifter-DAHAN Vibration Machinery Co., Ltd.
Apatite vibro sifter is widely used in screening operations in industries such as apatite, ore, coal, building materials, chemical industry. For example, in the mine industry, the vibro sifter of limestone can sieve ore; in the building materials industry, apatite vibro sifter can be sieved of cement and other materials.
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Recovery of Apatite From Ore Slimes Using Centrifugal …
The aim of this study is to determine the feasibility of using a centrifugal heavy medium separation (CHMS) method to obtain apatite concentrates from ore slimes (particle size < 45 µm, 4.5% P2O5).
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Evaluation of platelet adhesion and activation on materials …
Al2O3, PE, and Ti-6A1-4V, which are incorporated into the authors' implantable centrifugal pump, have satisfactory antithrombogenic properties in terms of platelet adhesion, however, platelet activation by any material was not observed under the static condition in this study. A totally implantable centrifugal artificial heart has been …
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Recovery of Apatite from Slimes of A Brazilian Phosphate Ore
In general terms, the flowsheet applied to apatite concentration in Brazilian phosphate industry plants involves grinding; classification in coarse and fines fractions; magnetic separation (low and high intensity); desliming to remove particles < 10 μm; barite flotation and apatite flotation. This work shows the results obtained in a study of apatite …
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Efficient Enhanced Gravity Separation Using the Kelsey Centrifugal …
"The Kelsey Centrifugal Jig (KCJ) utilizes the application of centrifugal force (and the resultant enhanced gravitational field) to conventional jigging technology principles to successfully and efficiently process materials where the valuable constituent particulates are very fine and/or where there is a small specific gravity differential between these and …
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Apatite | Properties, Occurrence, Uses
Apatite is a very common mineral, transparent gemstone-quality extremely rare. It is the defining mineral for 5 on Mohs scale of hardness ... Apatite is used in various fields, including agriculture, industry, medicine, and research. It is a major source of phosphate, which is used in fertilizers, and it is also used in the production of ...
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The trace element composition of apatite and its application …
REYs and Sr strongly partition into apatite in igneous melts, thus in magmatic systems apatite can control a significant portion of the whole-rock REE- and Sr-budget, …
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Dysprosium magnesium silicate apatite featuring field and …
Dy–Mg silicate Dy 8 Mg 2 (SiO 4) 6 O 2 has been prepared by high-temperature solid state reaction. It has an apatite type structure (P6 3 /m) with the Dy atoms fully occupying the 6h site and being in random distribution with the Mg atoms at the 4f site.The compound reveals dual magnetization relaxation with widely varying …
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