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[4] On November 29, 2000, the Philippine government's stake was sold to Delphi Holdings of Jose Alvarez for ₱3 billion payable within the next two years. [5] Alvarez who is said to be bidding in behalf of majority owner, the Nauru government, became the firm's chairman. Delphi Holdings paid the remaining ₱1 billion to the government in late ...
In 2015, 27.6 million metric tons of marketable phosphate rock, or phosphorite, was mined in the United States, making the US the world's third-largest producer, after China and Morocco. The phosphate mining industry employed 2,200 people. The value of phosphate rock mined was US$2.2 billion.
The construction industry is the number one user of phosphogypsum in 2020, with 10.5 Mt used as concrete set retarder and 3.5 Mt used in drywall. [13] It is also used as a chemical feedstock for producing sulfates , and as a soil conditioner similar to regular gypsum. [ 14 ]
Mosaic is purchasing the phosphate business of CF Industries for $1.4 billion. That is $1.2 billion in cash for the phosphate business, and Mosaic will add another $200 million in asset retirement ...
The phosphate or orthophosphate ion [PO 4] 3− is derived from phosphoric acid by the removal of three protons H +. Removal of one proton gives the dihydrogen phosphate ion [H 2 PO 4] − while removal of two protons gives the hydrogen phosphate ion [HPO 4] 2−. These names are also used for salts of those anions, such as ammonium dihydrogen ...
Example of a calcium feed phosphate production. Phosphoric acid is neutralized by means of calcium oxide or calcium carbonate, or a mixture of them. Dicalcium phosphate: H 3 PO 4 + CaO + H 2 O ↔ CaHPO 4 + 2 H 2 O Monocalcium phosphate: 2H 3 PO 4 + CaO + H 2 O ↔ Ca(H 2 PO 4) 2.H 2 O + H 2 O Or : Based on dicalcium phosphate
The fully dissociated anion (k = n − 2x + 2) has formula [P n O 3n−x+1] (n−2x+2)−. The term phosphate is also used in organic chemistry for the functional groups that result when one or more of the hydrogens are replaced by bonds to other groups.
SHMP is used as a sequestrant and has applications within a wide variety of industries, including as a food additive in which it is used under the E number E452i. Sodium carbonate is sometimes added to SHMP to raise the pH to 8.0–8.6, which produces a number of SHMP products used for water softening and detergents.