Among specific topics are tailoring collectors to allow sea water usage in phosphate beneficiation, recovering rare earth elements from phosphate rock and phosphate mining waste products using a novel heterogeneous adsorption polymer, how phosphate rock quality impacts the phosphoric acid plant and the granulation plant operations, the effect of calcium concentrate on calcite flotation from
apatite using carbonic gas, and a comparative study of different column sizes for ultrafine
apatite flotation.
The memorandum of cooperation has been signed for the construction of a specialised marine terminal for the transhipment of mineral fertilizers and
apatite concentrate at the seaport of Murmansk.
In the article titled "Osteogenic Differentiation of hDPSCs on Biogenic Bone
Apatite Thin Films" [1], the second affiliation was incorrect.
Apatite [[Ca.sub.5][(P[O.sub.4]).sub.3](F,OH)] forms a large family of minerals due to many isomorphous substitutions, which play a very important role in numerous industrial, medical, and environmental processes [1-3].
The vibrational spectra of silicate
apatite samples were recorded using a Renishaw inVia micro-Raman spectrometer under 488 nm laser radiation at room temperature as described earlier [18].
The dominating biogenic compounds are: (i) calcite as < 5 m[micro] micrite forming the groundmass mudstone, and both micrite of the matrix and > 5 m[micro] to 1 mm grains--skeletal particles (shells and their broken fragments) in wackestone, (ii) silica as < 5 m[micro] particles belonging to the groundmass of mudstone and wackestone matrix, (iii) organic matter (kerogen) in the mudstone and matrix of wackestone, (iv) phosphate skeletal fragments in certain interbeds of wackestone and very fine
apatite in groundmass.
The inorganic component comprises well-defined and tightly-packed nano
apatite crystals of calcium and phosphate with small amounts of trace elements.
[14] found that addition of 5% (w/w) WF reinforces the compressive strength of an
apatite CPC by 250% compared to nonreinforced CPC (from 14.5 to 50.4 MPa).
Carbonatites have gained considerable economic significance because of their newly recognized importance in producing large-scale sources of niobium, cerium,
apatite, magnetite, barite, vermiculite, phosphorus, tantalum, uranium, thorium, copper, iron, titanium, vanadium, barium, fluorine, zirconium, and other rare or incompatible elements.