Phosphate ore is the final nerve.
(phosphate)
The mineral phosphate compound contains the phosphorus tetroxide ion (PO3-4). Phosphorus is a non-metallic mineral belonging to the Alexandrite family, with atomic number (15) and atomic weight (30.97). It does not exist naturally as it readily combines with oxygen.
The relative term "phosphorite" is given to phosphate deposits that can be mined and exploited economically, while the term "phosphate black" is given to blacks containing a high percentage of non-phosphates. Phosphate concentration is measured by knowing the phosphorus rail element (P2O5), the phosphorus element ratio, the phosphorus element ratio in lime, or the diphosphate element ratio in lime. Highly desired concentrations are found between 30% and 37% of the solid phosphorus (P2O5) structure.
Profit and Properties
- Clear Composition: Phosphate rocks contain approximately 200 minerals from the apatite group, with the clear composition F3(PO4)Ca. Phosphate is insoluble in water, but reacts with sulfuric acid to produce phosphate fertilizer and phosphoric acid. It produces nitrogenous phosphate fertilizer by reacting with ammonia, and phosphoric acid by reacting with hydrochloric acid.
- Physical Properties: Phosphate rocks vary in color from pale to light due to the presence of organic matter in the formation, either in the form of clastic or cross-linked deposits, where the solid material is either calcareous or siliceous. These deposits also contain some radioactive elements, such as uranium. The natural properties of apatite minerals are:
- Crystal form: Hexagonal
- Color: Yellow or black with a green tinge, sometimes blue
- Streaking: White
- Hardness: 5
- Mohs: 2, 3
Natural occurrence:
Most phosphate rocks occur naturally in one of the following forms:
1- Primary sedimentary phosphate rocks: These are the most important deposits in terms of distribution and exploitation, accounting for approximately 80% of global deposits. Phosphorus concentrations range between 20% and 30%. These are granular marine deposits, such as the phosphate deposits of Egypt and North Africa, and the phosphate deposits of northern Saudi Arabia, Iraq, and Jordan.
2- Primary igneous phosphate rocks: These are produced from nepheline syenite rocks, carbonatite rocks, and pyroxenes containing significant amounts of phosphate minerals, the most important of which is apatite, as well as unimportant deposits, such as the Khnebi deposit in Russia.
3- Guano deposits: They are caused by the weekend and a marine holiday over the island of Jiri, such as the island of Rosneura in the Pacific Islands.