phosphate rock term

  • Rock Phosphate - Kelp4less

    Long-term, slow-release calcium and organic phosphate. builds up native and depleted soils.

  • The phosphorus cycle — Science Learning Hub

    The phosphorus is obtained by mining deposits of rock phosphate. Locally produced sulfuric acid is used to convert the insoluble rock phosphate into a more soluble and usable form – a fertiliser product called superphosphate. In New Zealand, superphosphate is made using rock .

  • An Overview of Phosphates and Their Uses

    The term phosphate refers to any one of a wide variety of chemical compounds that contain phosphorus, a naturally occurring mineral, bonded together with oxygen. The term is used both in inorganic chemistry and organic chemistry. In inorganic chemistry, the phosphate ion combines one phosphorus atom with three or four oxygen atoms, forming the base for many different salts.

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  • Phosphate rock | definition of phosphate rock by Medical ...

    phosphate [fos´fāt] any salt or ester of phosphoric acid. adj., adj phosphat´ic. Phosphates are widely distributed in the body, the largest amounts being in the bones and teeth. They are continually excreted in the urine and feces and must be replaced in the diet. Inorganic phosphates function as buffer salts to maintain the acid-base balance in ...

  • Phosphorus Cycle - Elmhurst College

    Phosphorus Cycle. Phosphorus enters the environment from rocks or deposits laid down on the earth many years ago. The phosphate rock is commercially available form is called apatite. Other deposits may be from fossilized bone or droppings called guano. Weathering and erosion of rocks gradually releases phosphorus as phosphate ions which ...

  • Phosphate Rock | Definition of Phosphate Rock by Merriam ...

    Phosphate rock definition is - a rock that consists largely of calcium phosphate usually together with other minerals (such as calcium carbonate), is used in making fertilizers, and .

  • Phosphate Rock | Minerals Education Coalition

    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 obtained by mining and concentrating phosphate rock from the numerous phosphate deposits of the world.

  • Phosphate and Organic Fertilization

    Phosphate and Organic Fertilization. In the early 1800s, it was learned that phosphorus promotes growth in plants and animals. At first, bones, which contain the element phosphorus, were used as an agricultural fertilizer. Today, phosphate rock provides the phosphorus element of the nitrogen-phosphorus-potassium mix that fertilizer provides for ...

  • Phosphate Mining and the Paradox of Abundance - Edge Effects

    Sep 17, 2019 · If the term Plantationocene is a diagnosis, then the mining of phosphate rock is its source and symptom. Some researchers have calculated that peak phosphorus will occur around the year 2030 and estimate that reserves will be depleted in 50–100 years.

  • Phosphate Market Analysis | Agribusiness Intelligence

    Fertecon can also provide confidential consultancy services on Phosphate Fertilizers (DAP, MAP, NP, NPK, TSP, SSP, MKP), Phosphate Rock, Phosphoric acid and others, including a series of major -client supply/demand studies. Try Phosphate services for yourself with our FREE market report.

  • Phosphate in Water - Water Research

    The organic phosphate is the phosphate that is bound or tied up in plant tissue, waste solids, or other organic material. After decomposition, this phosphate can be converted to orthophosphate. Phosphate rock in commercially available form is called apatite and the phosphate is also present in fossilized bone or droppings called guano.

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  • Phosphate | definition of phosphate by Medical dictionary

    phosphate [fos´fāt] any salt or ester of phosphoric acid. adj., adj phosphat´ic. Phosphates are widely distributed in the body, the largest amounts being in the bones and teeth. They are continually excreted in the urine and feces and must be replaced in the diet. Inorganic phosphates function as buffer salts to maintain the acid-base balance in ...

  • Mineral Resource of the Month: Phosphate Rock | EARTH Magazine

    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 minerals that is the primary source for phosphorus in phosphate fertilizers, which are vital to agriculture.

  • Health Risks - The Phosphate Risk

    Phosphate has been mined in Florida for more than 100 years. We've known that phosphate rock is radioactive for nearly as long. But, scientific study of the potential health problems associated with phosphate mining is relatively recent. Florida's soils have naturally occurring radioactivity.

  • Phosphate - ScienceDaily

    Mar 04, 2019 · Mar. 4, 2019 — Researchers have found a possible new source of rare earth elements - phosphate rock waste - and an environmentally friendly way to get them out, according to a .

  • Use of phosphate rocks for sustainable agriculture

    Phosphate rock (PR) is a general term that describes naturally occurring mineral assemblages containing a high concentration of phosphate minerals. The term refers to both unbeneficiated phosphate ores and concentrated products. Sedimentary deposits have provided about 80- 90 percent of world production in the last ten years.

  • Calphos Soft Rock Phosphate - Regular Powder (50 lb ...