Ore Sulfuric Apatite

Us3259242a Beneficiation Of Apatitecalcite Ores

US3259242A US241057A US24105762A US3259242A US 3259242 A US3259242 A US 3259242A US 241057 A US241057 A US 241057A US 24105762 A US24105762 A US 24105762A US 3259242 A US3259242 A US 3259242A Authority US United States Prior art keywords flotation apatite calcite macrocrystalline acid Prior art date 1962-11-29 Legal status The legal status is an assumption and is.

Apatite Infogalactic The Planetary Knowledge Core

2019-7-29ensp0183enspApatite is occasionally found to contain significant amounts of rare-earth elements and can be used as an ore for those metals. This is preferable to traditional rare-earth ores, as apatite is non-radioactive and does not pose an environmental hazard in mine tailings.

How Can The Phosphoric Acid Production Be Monitored

Then the apatite is forwarded to a reactor to which sulfuric acid is added. In the reactor the two ingredients react to form phosphoric acid and calcium sulfate. H 3 PO 4 is widely used, e.g. for hydrogen halide production, as a food additive E338, as electrolyte in phosphoric acid fuel cells, for copper-electropolishing and as an etching agent for semiconductors.

Processes For Phosphorus Removal From Iron Ore A

2.1 Phosphate occurrences. Iron ore of high phosphorus content coexists with other minerals in the form of apatite or fluorapatite. Phosphorus is spread on the edge of mineral particles of iron oxide and embedded in quartz or carbonate minerals and a small amount is present in the iron mineral grid Xia et al., 2011.

Removal Of Phosphorus From Iron Ores By Chemical

The results show that phosphorus occurring as apatite phase could be removed by alkali-leaching, but those occurring in the iron phase could not. Sulfuric acid is the most effective among the three kinds of acid. 91.

Selective Separation Of Light And Heavy Rare Earth

2018-8-6ensp0183enspApatite ore samples received from Mushgia Khudag, Mongolia were used in this study. Sulfuric acid H 2 SO 4, 96 was used to dissolve REEs from the apatite ore. Three different organophosphorus extractants have been used to extract REEs from the pregnant leach solution.

Attack Of Tunisian Phosphate Ore By A Mixture Of

A calorimetric, Differential Reaction Calorimetry DRC, study of the thermochemical of the attack of a phosphate ore from Gafsa region Tunisia by a mixture of sulfuric and phosphoric acid is undertaken at different solid-liquid ratio and different temperature.

Dissolution Of Tunisian Phosphate Ore By A Mixture Of

2019-3-25ensp0183enspphosphate ore with sulfuric acid as an acidulate 23. The decomposition of phosphate rocks using aqueous sulfuric acid has been studied by several authors 24-31. Sevim et al. 24 dissolved Turkish mineral phosphate in sulfuric acid at 1470186C showing that the reaction rate belongs to a solid-to-liquid ratio, temperature and particle size.

Phosphorus Fertilizer Production And Technology

2019-3-29ensp0183ensp Sulfuric acid treatment process of bones and P minerals apatite was patented in mid 1800s. Today most P fertilizer production is based on acidification of apatite. from phosphate rock PR Guano mining, Chincha Islands, Peru, 1860 Guano mining, Chincha Islands, Peru 1860 U.S.

21 Prepare Of Phosphate Ore And Pyrite For Leaching

2014-1-6ensp0183enspphosphate ore and pyrite minerals, in laboratory conditions using sulfuric acid generated by bacterial culture of Acidithiobacillus ferrooxidans At. ferrooxidans, because the possible application of these ... as apatite 1.

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Introduction To Apatites Intechopen

2014-11-11ensp0183enspApatite is the generic name, which was first introduced by German geologist A.G. Werner. These minerals and their synthetic analogs represent a major class of ionic compounds and the most common crystalline form of calcium phosphates, which are of interest of many industrial branches and scientific disciplines.

Method Of Beneficiating Phosphate Ores University

1989-8-15ensp0183enspThe apatite sample should preferably be sized to a particle size suitable for beneficiation by flotation.

Upgrading Of Phosphate Ore Pennzoil Company

U.S. Pat. No. 3,919,395 describes an extraction process for the recovery of phosphorus compounds from both high and low grade phosphate ores, especially apatite-containing ores, using room temperature extraction of coarsely ground ore with dilute mineral acids in order to remove dissolved R 2 O 3 impurities from the ore to upgrade the ore.

Stone Cold The 11 Most Dangerous Minerals

Hydroxyapatite or Hydroxylapatite, one of the Apatite groups of phosphate minerals and the major component of tooth enamel and bone mineral, poses a direct threat to health by creating deposits in heart valves and arteries causing blockages.

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