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USA Process for beneficiation of phosphate and iron ores Google Patents Process for beneficiation of phosphate and iron ores Download PDF Info Publication number ... Priority to US05/955,868 priority patent/USA/en Application granted granted Critical
USA Process for phosphate beneficiation Google Patents Process for phosphate beneficiation Download PDF Info ... or P 2 O 5 from phosphate rock. Phosphate rock is a natural rock consisting largely of calcium phosphate and used chiefly as a raw material for manufacture of phosphate fertilizers, phosphate acid and phosphorous, and ...
Nov 09, 2012· Process of producing defluorinated product from low BPL phosphate rock. The process of claim 1 wherein the phosphate rock has a bone phosphate of . is such that there is no substantial fusion upon calcination. 5. The process of . Beneficiation of apatite rock .
Beneficiation of Phosphates VII by an authorized administrator of ECI Digital Archives. For more information, please contactfranco Recommended Citation Patrick Zhang, "Beneficiation of Phosphates VII CONFERENCE PROGRAM" in "Beneficiation of Phosphates VII", P. Zhang, FIPR;
USA Defluorination of phosphate rock Google Patents. In defiuorinatng phosphate rock by calcination in the presence of water vapor where the rock is nely divided and finely divided silica is included in the calcining charge in intimate association with the rock, the improvement which comprises including in the calcining charge from 35 to 45% by weight of nely divided silica and ...
Phosphoric acid is produced by either a dry or a wet process. In the dry process, phosphate rock is treated in an electric furnace to produce a very pure and more expensive phosphoric acid (frequently called white or furnace acid). In the wet process, the phosphate rock was treated with acid producing phosphoric acid (also called green or
patents on phosphate rock benefiion. benefiion for phosphate for sale patents on phosphate rock benefiion XSM is a leading global manufacturer of crushing and milling equipment (patents on phosphate rock benefiion),XSM also supply, Get More Info method for beneficiation of phosphate rock, Chat Ore Beneficiation Arabia noworriin.
Apr 30, 1974· What we claim as new and desire to protect by letters patent of the United States is 1. In a process for beneficiating phosphate rock containing siliceous and carbonaceous gangue materials and gypsum in which soluble phosphates are lost by association with the gypsum and which includes the steps of subjecting comminuted phosphate rock to a first stage anionic flotation step for depressing ...
Jun 14, 1983· Method for beneficiation of phosphate rock . United States Patent . Abstract: A process is disclosed which removes gangue minerals from phosphate rock by forming an aqueous slurry of phosphate rock and its impurities, then using a low boiling, nonpolar, water insoluble, bridging hydrocarbon to selectively agglomerate the phosphates. ...
The chemical analysis of the rock revealed that P 2 O 5 = %, CaO = %, SiO 2 = % and CaO:P 2 O 5 ratio = The main problem of this ore is its high content of calcite mineral. The separation of such calcite gangue from apatite "phosphate mineral" is the main target of this beneficiation process.
Patents Assigned to DorrOliver Incorporated Fluidized bed drying process for porous materials ... Beneficiation of phosphate rock containing limestone is accomplished by calcining, cooling, slaking and separation of the slaked lime from the phosphate rock product. The cooling, slaking and separation operations are conducted in a fluid bed ...
Phosphate Beneficiation. Phosphate is a key element in all living organisms. It is found in phospholipids in every biological membrane, as a component in adenosine triphosphides (ATP) which fuel cell functions, and in bones and teeth as calcium phosphate.
A process for beneficiating phosphate ores in which the ore is scrubbed and deslimed prior to separation into a coarse fraction and a fine fraction, each of which is subjected to a plurality of anionic flotation steps and screening steps to obtain high recovery and high grade phosphate product whereby the acid cleaning and cationic flotation steps previously used are eliminated.
Phosphate Beneficiation. Background. Definition of "Beneficiation": This is the second step in the mining process, after removal of the ore from the ground. Beneficiation is the technical term describing the industrial process of mechanically separating minerals from each other.
A process for use in a phosphate ore beneficiation process to minimize the longterm environmental impact of the use of petroleum based hydrocarbon materials mixed with fatty acid based primary floatation reagents for froth flotation in the flotation of phosphate ores, wherein the process comprises substituting the petroleum based hydrocarbon materials with methyl and/or ethyl esters of fatty ...
Beneficiation of phosphatic ores through flotation is the general rule for apatitic endogenic ores (Kola, Phalaborwa, Brazil). It also constitutes the most widely used concentration process of sedimentary deposits with a siliceous gangue (Florida, Senegal).
Froth flotation of phosphate rock. David L. Spitzer University of Louisville ... beneficiation of phosphate rock is presented as an applica ... was granted the first patent dealing with this subject (6, .
Phosphate Beneficiation. Market Specifications Bone phosphate of lime, 70 to 72 per cent, common. Bone phosphate of lime 72 to 77 per cent, premium. Production Problems. Phosphate rock being a lowpriced material is produced as near the fertilizer market as .
Bittner et al./ Procedia Engineering 00 (2015) 000–000. 1. Reported work on electrostatic beneficiation of phosphate ores. Phosphate concentration from natural ores has long been performed by a variety of methods using sometimes substantial amounts of water.
The most common raw material ⠀ used in commercial P fertilizer production is PR which contains a calcium phosphate minera൬ called apatite. Phosphate rock is produced in several countries. There are two main types of PR deposits: sedimentary and igneous.
Beneficiation of Phosphates VIII An ECI Conference Series ... Dry Beneficiation of Phosphate Minerals Using a Triboelectric Belt Separator Kyle Flynn, ST Equipment Technology, USA ... The Recovery of Rare Earth Elements from Phosphate Rock and Phosphate Mining
This invention relates to a process for producing phosphoric acid and dicalcium phosphate. More particularly, the invention provides a process for obtaining relatively pure phosphoric acid and/or impure fertilizergrade dicalcium phosphate from lowgrade phosphatic raw materials as well as from highgrade phosphate rock. 2.
about phosphate rock basics, mining and beneficiation, the association of toxic metals and radioactive elements in the phosphate rocks and the transfer pathways of these hazardous elements from the phosphate rocks to the environment. The discussion part was mainly concerned on the environmental impact of phosphate mining and processing
In the mining industry or extractive metallurgy, beneficiation is any process that improves (benefits) the economic value of the ore by removing the gangue minerals, which results in a higher grade product (concentrate) and a waste stream ().Examples of beneficiation processes include froth flotation and gravity separation.. Other economic uses of the term are in use.
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