Sustainable use of phosphorus: A finite resource
World phosphate rock production increased by 335% from 45.5 Mt in 1961 to 198.0 Mt phosphate in 2011 (Kelly and Matis, 2013).This increase is smaller than the increase of human population which more than doubled in this period (UN, 2012).As shown in Fig. 1, there is a differential dynamics of fertilizer and phosphorus use in the …
Phosphate Rocks | IntechOpen
Apatite is the most abundant phosphate mineral which include more than 95% of al phosphorus in the Earth´s crust. The seventh chapter of this book provides brief description of sedimentary and igneous phosphate rocks and introduces basic ideas for characterization and classification of phosphate rocks. The chapter continues with …
Phosphate Definition & Meaning
phosphate: [noun] a salt or ester of a phosphoric acid. the trivalent anion PO43− derived from phosphoric acid H3PO4. an organic compound of phosphoric acid in which the acid group is bound to nitrogen or a carboxyl group in a way that permits useful energy to be released (as in metabolism).
Apatite: Its uses as a mineral and gemstone
Phosphate rock and phosphorite are names used for sedimentary rocks that contain at least 15% to 20% phosphate on the basis of weight. The phosphorous content in these rocks is mainly derived from the presence of apatite minerals. Determining which apatite-group minerals are contained in the rock cannot be determined without laboratory testing ...
(PDF) Phosphate Rocks: A Review of Sedimentary and
Phosphate rock is a non-renewable resource and an important component for phosphorous-based chemicals and the production of fertilizers (Gharabaghi et al., 2010;Mohammadkhani et al., 2011). >70 wt ...
Mineral Resource of the Month: Phosphate Rock
As a mineral resource, "phosphate rock" is defined as unprocessed ore and processed concentrates that contain some form of apatite, a group of calcium phosphate …
Phosphorite | SpringerLink
Phosphorite (often referred to as phosphate rock) is a sedimentary rock of which the main mineralogical constituent is francolite (carbonate-fluor-apatite, CFA). The above definition excludes igneous phosphate-rich rocks as well as continental deposits (e.g., guano; a few lacustrine deposits) Whereas most sedimentary rocks contain less than 1% ...
Phosphate Rock: Origin, Importance, Environmental Impacts …
Phosphate rock (PR) is an important mineral resource with numerous uses and applications in agriculture and the environment. PR is used in the manufacture of detergents, animal feed, and phosphate ...
Phosphorus Cycle
The phosphorus cycle is a slow process, which involves five key steps, as shown in the diagram below and described as follows: Weathering. Since the main source of phosphorus is found in rocks, the …
Phosphate Rock Statistics and Information | U.S. Geological …
Phosphorus is an essential element for plant and animal nutrition. Most phosphorus is consumed as a principal component of nitrogen-phosphorus-potassium fertilizers used on food crops throughout the world. Phosphate rock minerals are the only significant global resources of phosphorus. The United States is the world's leading producer and ...
Phosphorite | SpringerLink
Phosphorite (often referred to as phosphate rock) is a sedimentary rock of which the main mineralogical constituent is francolite (carbonate-fluor-apatite, CFA).
Phosphorite | Definition, Formation, & Uses | Britannica
Phosphorite, rock with a high concentration of phosphates in nodular or compact masses. The phosphates may be derived from a variety of sources, including marine …
Apatite | Properties, Occurrence, Uses
Phosphate rock and phosphorite are names used for sedimentary rocks that contain at least 15% to 20% phosphate on the basis of weight. The phosphorous content in these rocks is mainly …
Minerals | Free Full-Text | Phosphate Rocks: A …
Phosphate rocks are a vital resource for world food supply and security. They are the primary raw material for phosphoric acid and fertilizers used in agriculture, and are increasingly considered to be a …
Understanding phosphorus fertilizers | UMN Extension
Rock phosphate is the raw material used to manufacture most commercial phosphate fertilizers on the market. In the past, ground rock phosphate itself has been used as a source of P for acid soils. However, very little rock phosphate is currently used in agriculture due to low availability of P in this native material, high transportation costs ...
Phosphate rock: origin, importance, environmental impacts, …
Phosphate rock (PR) is an important mineral resource with numerous uses and applications in agriculture and the environment. PR is used in the manufacture of …
Reserves and Resources DC World Phosphate Rock
of phosphate rock mining and processing has occurred at numerous sites around the world over the past few decades. Vertical integration of phosphate rock mining and processing may be a necessary component to compete in the world phosphate fertilizer market when new deposits are developed.
Phosphate Rock
The term phosphate rock (or phosphorite) is used to denote any rock with high phosphorus content. The largest and least expensive source of phosphorus is …
Phosphate Rock
Phosphate rock used for fertilizer is a major NORM due to both uranium and thorium. Phosphate is a common chemical constituent of fertilizer. It is principally mined from apatite and phosphate rocks (phosphorite) in which the concentration of phosphate has been enhanced by sedimentary, igneous, weathering, and biological processes.
Distribution, geology and development status of phosphate …
The world's phosphate ore reserve nearly totals 69.5 billion tons (2019), but its distribution is uneven, more than 80% of which is concentrated in North Africa. Especially, Morocco and Western Sahara are the world's richest countries in phosphate resources, with reserves of 50 billion tons in 2019, accounting for nearly 72 percent of the …
Phosphate Rock
Rock phosphate is a naturally occurring ore of marine sedimentary origin. It may have a composition of 0-30-0, but the grade is noted as 0-3-0, since rock phosphate is sparingly …
Phosphate Rock
Rock phosphate. Rock phosphate is a naturally occurring ore of marine sedimentary origin. It may have a composition of 0-30-0, but the grade is noted as 0-3-0, since rock phosphate is sparingly soluble and little of the phosphorus is available to crops. Many of the mines that produced rock phosphate are closed, and most of the marketed rock ...
Phosphate Rock
Phosphate Rock: An Industry in Transition takes an interdisciplinary approach to dealing with the phosphate rock chain and its exploration, extraction, processing, fertilizer making, and storage and transportation. The book treats the subject from a global perspective, giving readers insights into what is happening in the emerging economies of the world …
Which Minerals Include Phosphate?
Reimphoto / Getty Images Apatite (Ca 5 (PO 4) 3 F) is a key part of the phosphorus cycle. It is widespread but uncommon in igneous and metamorphic rocks. Apatite is a family of minerals centered around fluorapatite, or calcium phosphate with a bit of fluorine, with the formula Ca 5 (PO 4) 3 F. Other members of the apatite group have …
Phosphate rock Definition & Meaning
The meaning of PHOSPHATE ROCK is a rock that consists largely of calcium phosphate usually together with other minerals (such as calcium carbonate), is used in making fertilizers, and is a source of phosphorus compounds.
Phosphorus Fertilizers
Phosphorus fertilizers are manufactured from rock phosphate (Figure 2.2), but rock phosphate itself seldom is used directly as a fertilizer because of its low availability of phosphorus and transport cost. Instead, finely ground rock phosphate is treated with sulfuric acid to yield monocalcium phosphate monohydrate and is known as ...
Phosphate rock formation and marine phosphorus
Phosphate rocks, also referred to as phosphorites, are sedimentary deposits with high phosphorus (P) concentrations. These rocks are one of the primary ore sources for P (Fig. 1), which in turn is a critical and non-renewable element for fertilizer production, upon which global fertility depends.The startling limitation of phosphate rock reserves …
Phosphate rock
Define phosphate rock. phosphate rock synonyms, phosphate rock pronunciation, phosphate rock translation, English dictionary definition of phosphate rock. n. Any of various rocks composed largely of phosphate minerals, especially apatite, used as fertilizer and as a source of phosphorous compounds.
Rock Phosphate Vs Bone Meal- One-Stop Guide
Determining the Definition of Phosphate of Rock. Phosphate of Rock, like bone meal, is an organic fertilizer. However, it is little more than a clay-based mined rock. So, what exactly is Phosphate of Rock? It's a terrific provider of calcium and phosphorus, to be sure. It has a phosphorus content of 30%.
Definition of phosphate rock
Definition of phosphate rock. Any rock that contains one or more phosphatic minerals of sufficient purity and quantity to permit its commercial use as a source of phosphatic compounds or elemental phosphorus. About 90% of the world's production is sedimentary phosphate rock, or phosphorite; the remainder is igneous rock rich in apatite. ...
