phosphate rock exist

2020-03-25T00:03:53+00:00
  • Phosphate Rock - an overview ScienceDirect Topics

    Rock phosphate, the primary raw material for fertilizer and phosphoric acid, occurs as high-grade ore (+30% P 2 O 5), medium-grade ore (20%–30% P 2 O 5), and low-grade ore (15%–20% P 2 O 5). The very high-grade ore blends with medium-grade ore for direct sale. The high-grade ore is mined, crushed, and sold to various fertilizer plants.

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  • Phosphate Rock Minerals Education Coalition

    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 obtained by mining and concentrating phosphate rock from the numerous phosphate deposits of the world. Some phosphate rock is used to make calcium phosphate nutritional supplements for animals.

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  • Reserves and Resources DC World Phosphate Rock

    The amount of remaining phosphate rock reserves and resources worldwide has become an issue of speculation. It has been hypothesized that phosphorus (phosphate rock) production will "peak" in 2033-2034 and then production will unavoidably decrease as the reserves are depleted.

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  • Phosphate Rock Mosaic Crop Nutrition

    Phosphate rock comes from geologic deposits located around the world. Its main constituent is apatite, a calcium phosphate mineral primarily extracted from sedimentary marine deposits, with a small amount obtained from igneous sources. Most phosphate rock is recovered through surface mining, although some is extracted from underground mines.

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  • What Is Rock Phosphate and How to Use It in Your Garden ...

    Apr 06, 2020  Rock phosphate also referred to as phosphate rock or phosphorite, is a type of non-detrital sedimentary rock packed with phosphate mineralization, including apatite. In addition to being an essential organic source of phosphorus, phosphate rock also contains limestone, clay, and some other essential trace minerals.

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  • Phosphate - Wikipedia

    Chemical properties. The phosphate ion has a molar mass of 94.97 g/mol, and consists of a central phosphorus atom surrounded by four oxygen atoms in a tetrahedral arrangement. It is the conjugate base of the hydrogen phosphate ion H(PO 4) 2−, which in turn is the conjugate base of the dihydrogen phosphate

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  • Phosphate rock formation and marine phosphorus ...

    This limitation is becoming critical, as the human demand for P far outstrips the geologic replacement for P and few prospects exist for new discoveries of phosphate rock. Previous article in

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  • Phosphate rock formation and marine phosphorus ...

    phorite deposits and the limitation of phosphate rock reserves. This limitation is becoming critical, as the human demand for P far outstrips the geologic replacement for P and few prospects exist for new discov-

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  • World Phosphate Deposits Geology for Investors

    Nov 21, 2019  Phosphate rock describes an imprecise series of minerals, all belonging to or variations of the apatite group of minerals (Figure 1). As a whole the general chemistry is A 5 (XO 4 ) 3 (OH,F,Cl), where A is generally Ca and X is P, however the mineral group as a whole can accommodate over half the periodic table amongst the two sites.

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  • Geology of Phosphate Rock in China: Distribution, Rock ...

    Key words: China, geology, metallogenic perspective, phosphate resources, phosphate rock, rock type 1. Introduction Phosphate rock (PR) is the only significant global re-source that contains phosphorus (P). Phosphate rock is considered an important strategic resource, and is non-renewable. PR is a fossil resource, regenerated very

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  • Phosphate rock deposits remain unexploited - Newspaper ...

    Oct 16, 2006  There exist two major phosphate rock types, namely dolomite ore containing low to medium phosphorous pentoxide (P2 O5) and siliceous ore containing medium to

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  • Chemical Processing of Phosphate - Florida Poly

    Chemical Processing of Phosphate. The phosphate mineral as it exists in the ground is not soluble and is hard for the plant to access. To provide the plant with the phosphate it needs, in a form it can take up through its roots, the phosphate rock is converted to phosphoric acid. It

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  • History of Phosphate Fertilizer Production

    This was especially true in Florida, which produces approximately 75% of the phosphate rock mined in the U.S. Phosphate rock is no longer sold for direct fertilizer manufacture. It is exclusively used to make phosphoric acid, almost all of which is used in the production of phosphate fertilizers.

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  • Phosphorus Supply and Demand - MIT

    Although globally, elemental phosphorus is relatively abundant, high-grade phosphate rock exists in just a few areas. They are even fewer and more concentrated than oil deposits (Vaccari, 2009). There will undoubtedly be new reserves found in the future, but most recent discoveries have occurred in just a few places, mostly Morocco and the ...

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  • Difference Between Phosphorus and Phosphate Compare the ...

    Jul 19, 2011  Phosphate. Phosphate is the common inorganic form of phosphorus, which is present in the natural environment. They exist as deposits/ rocks and these are mined to get required phosphorous. One phosphorus atom is bonded with four oxygens to form a -3 polyatomic anion.

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  • Plants Need Phosphate Ask A Biologist

    Dec 19, 2015  The Future of Phosphate. Historically, phosphate was mined from bat guano, but bats can only poop so much. So now the majority of phosphate comes from phosphate rock. Yet, just like the bat guano, there’s only so much phosphate rock to go around. In fact, it is projected that at current rates, we will run out of phosphate in the next 50 to ...

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  • Fluoride Action Network The Phosphate Fertilizer ...

    “In the manufacture of super-phosphate fertilizer, phosphate rock is acidulated with sulfuric acid, and the fluoride content of the rock evolves as volatile silicofluorides. In the past, much of this volatile material was vented to the atmosphere, contributing heavily to pollution of the air and land surrounding the manufacturing site.

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  • Phosphate Occurrence and Potential in the Region of ...

    Although the possibility of economic phosphate deposits exist for Afghanistan, the need for detailed exploration for phosphate, the remoteness of ... phosphate rock in Afghanistan, where phosphate mineralization is only known to occur in carbonatite at the following sites: 1) Khanneshin carbonatite (Tucker and others, 2011a,b); ...

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  • Phosphate Rock: Origin, Importance, Environmental Impacts ...

    Phosphate rocks are mainly classified as (i) sedimentary phosphate deposits (which represent about 75% of the world phosphate rock that exist in Egypt, Jordan, and the USA) and (ii) igneous ...

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  • Phosphate rock formation and marine phosphorus ...

    The role that phosphorite formation, the ultimate source rock for fertilizer phosphate reserves, plays in the marine phosphorus (P) cycle has long been debated. A shift has occurred from early models that evoked strikingly different oceanic P cycling during times of widespread phosphorite deposition

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  • Phosphate Rock: Origin, Importance, Environmental Impacts ...

    Phosphate rocks are mainly classified as (i) sedimentary phosphate deposits (which represent about 75% of the world phosphate rock that exist in Egypt, Jordan, and the USA) and (ii) igneous ...

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  • Phosphate rock formation and marine phosphorus ...

    This limitation is becoming critical, as the human demand for P far outstrips the geologic replacement for P and few prospects exist for new discoveries of phosphate rock. Previous article in

  • Get Price
  • Phosphate rock deposits remain unexploited - Newspaper ...

    Oct 16, 2006  There exist two major phosphate rock types, namely dolomite ore containing low to medium phosphorous pentoxide (P2 O5) and siliceous ore containing medium to

  • Get Price
  • Geology of Phosphate Rock in China: Distribution, Rock ...

    Key words: China, geology, metallogenic perspective, phosphate resources, phosphate rock, rock type 1. Introduction Phosphate rock (PR) is the only significant global re-source that contains phosphorus (P). Phosphate rock is considered an important strategic resource, and is non-renewable. PR is a fossil resource, regenerated very

  • Get Price
  • Apatite: From Crystals to Phosphate Rock Rock Gem Magazine

    Nov 05, 2020  High-grade phosphate rock, the only commercial source of phosphorus, contains at least 10 percent elemental phosphorus in the form of apatite. As the base of the 25-billion-dollar-per-year global mining industry, more than 255 million tonnes of phosphate rock are

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  • Phosphorus: Essential to Life—Are We Running Out?

    Apr 01, 2013  The duration of phosphate rock reserves will also be impacted by the decreasing quality of the reserves, the growing global population, increased meat and dairy consumption (which require more fertilized grain for feed), wastage along the food chain, new technologies, deposit discoveries and improvements in agricultural efficiency and the recycling of phosphorus.

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  • Phosphate Occurrence and Potential in the Region of ...

    Although the possibility of economic phosphate deposits exist for Afghanistan, the need for detailed exploration for phosphate, the remoteness of ... phosphate rock in Afghanistan, where phosphate mineralization is only known to occur in carbonatite at the following sites: 1) Khanneshin carbonatite (Tucker and others, 2011a,b); ...

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  • Phosphorus: Essential to life—Are we running out?

    Apr 02, 2013  In 2008, phosphate rock prices spiked 800 percent because of higher oil prices, increased demand for fertilizer (due to more meat consumption) and

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  • Why are there so many gypsum stacks in Florida? wtsp

    Apr 09, 2021  Phosphate rock is mined from the ground and mixed with sulfuric acid in order to create phosphoric acid -- the base of many fertilizers. Consumption of phosphate-based fertilizers is

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  • Plants Need Phosphate Ask A Biologist

    Dec 19, 2015  The Future of Phosphate. Historically, phosphate was mined from bat guano, but bats can only poop so much. So now the majority of phosphate comes from phosphate rock. Yet, just like the bat guano, there’s only so much phosphate rock to go around. In fact, it is projected that at current rates, we will run out of phosphate in the next 50 to ...

  • Get Price
  • Phosphate rock production and depletion: Regional ...

    Dec 01, 2014  For mineral resources, such as phosphate rock, high-grade mineral ores exist in finite quantities and extraction will eventually lead to an exhaustion of the resources that are economic to extract, at the same time as demand for minerals will likely continue to rise (May et al., 2012).

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  • Unit 6 Phosphorus Option Reading: Phosphorus

    Apr 14, 2021  The phosphate-rich sedimentary rock forms in the shallow oceans mainly due to bacterial activity, but only when several conditions are met. Their formation is pretty rare! For example, phosphates form only in warm, tropical oceans where there is a cold upwelling next to shore.

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  • Difference Between Phosphorus and Phosphate Compare the ...

    Jul 19, 2011  Phosphate. Phosphate is the common inorganic form of phosphorus, which is present in the natural environment. They exist as deposits/ rocks and these are mined to get required phosphorous. One phosphorus atom is bonded with four oxygens to form a -3 polyatomic anion.

  • Get Price