phosphate rock patents

US3035867A - Phosphate rock slurries ... - Google Patents

US3035867A US732089A US73208958A US3035867A US 3035867 A US3035867 A US 3035867A US 732089 A US732089 A US 732089A US 73208958 A US73208958 A US 73208958A US 3035867 A US3035867 A US 3035867A Authority US United States Prior art keywords phosphate rock weight percent slurries acids Prior art date Legal …

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Process of producing bio-organo-phosphate (BOP) fertilizer ...

Caravaca, F., et al., "Comparing the effectiveness of mycorrhizal inoculation and amendment with sugar beet, rock phosphate and Aspergillus niger to enhance field performance of the leguminous shrub Dorycnium pentaphyllum …

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Phosphate Rock Statistics and Information | U.S ...

Phosphate rock minerals are the only significant global resources of phosphorus. The United States is the world's leading producer and consumer of phosphate rock, which is used to manufacture phosphate fertilizers and industrial products. Subscribe to receive an email notification when a publication is added to this page. Monthly Publications

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PROCESS FOR THE PREPARATION OF A NITROPHOSPHATE …

A process for the preparation of nitrophosphate fertilizer by acidulation of phosphate rock by means of a mixture of HNO 3 and NH 4 HSO 4, wherein the NH 4 HSO 4, serves for the acidulation as well as for the precipitation of the calcium present in the phosphate rock as CaSO 4. 2H 2 O. The latter is treated with a gas mixture containing NH 3 and CO 2, forming CaCO 3 …

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Phosphate Minerals - an overview | ScienceDirect Topics

Phosphate rock (phosphorite or rock phosphate) contains 15–20% phosphate bearing minerals. The phosphorus is present as fluorapatite—Ca 5 (PO 4) 3 F—or as hydroxyapatite (apatite)—Ca 5 (PO 4) 3 OH. Another source is dissolved phosphate minerals from igneous and metamorphic rocks. Phosphate rock is a nonrenewable resource that takes 10 ...

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The Worldwide Phosphate Rock Industry is Expected to Reach ...

5 The global phosphate rock market size is expected to reach USD 29.73 billion by 2030. It is expected to expand at a CAGR of 3.2% from 2022 to 2030. The increasing demand from the agriculture ...

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PHOSPHATE ROCK FLOTATION - COMINCO LTD,CA

The latter patent teaches a two-stage anionic process wherein the phosphate minerals are selectively depressed prior to the second stage flotation by the addition of a soluble alkali phosphate to the flotation circuit. SUMMARY OF THE INVENTION

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PHOSPHATE - PhoSul LLC

phosphate indicalcium and tricalcium (TCP) forms can be released by microbes growing in solution while only 1-33% of the phosphate contained in rock phosphate is released. (Louw et al., A Study of Soil Bacteria Dissolving Certain Mineral Phosphate Fertilizers and Related Com pounds, Journal of Applied Bacteria, vol. 22, pp.

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Minbos submits provisional patent for 'organic ...

New patent application has been filed to cover the new phosphate rock fertilizer blend following analysis of results comparing different product forms of the Cabinda Phosphate Granules in field trials in Angola and greenhouse trials at the International Fertilizer Development Centre (IFDC) in the US, and a survey of literature.

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Phosphate Rock - USGS

PHOSPHATE ROCK (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: In 2020, phosphate rock ore was mined by five firms at 10 mines in four States and processed into an estimated 24 million tons of marketable product, valued at $1.7 billion, free on board (f.o.b.) mine.

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us patent beneficiation of rock phosphate - BINQ Mining

Process for phosphate beneficiation – US Patent 5542545 …. The present invention relates to a froth flotation method for the beneficiation of phosphate …rock.Phosphate rock is …United States patents which … »More detailed

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Phosphate rock benefication - Freeport-McMoRan Resource ...

A further related patent reference with regard to defluorinating phosphate rock is U.S. Pat. No. 3,364,008. In this patent there is disclosed a process whereby a defluorinating agent such as soda ash, or lime is added to phosphoric acid and phosphate rock.

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US3652210A - Dearsenication of phosphate rock - Google …

239000002367 phosphate rock Substances 0.000 title claims abstract description 24 References Cited [451 Mar. 28, 1972 UNITED STATES PATENTS 1,994,070 3/1935 Foss ..7l/7 2,289,538 7/l942 Buford 3,207,580 9/1965 Cosway et al ..23/l65 FOREIGN PATENTS OR APPLICATIONS 20,521 2/l892 Great 3 1 91 .7516

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PHOSPHATE FERTILIZER EXPERTISE - JESA Group

capabilities from phosphate rock to fertilizers. Our Technology office in Lakeland, Florida is an acknowledged leader in the design of the beneficiation, phosphoric acid and fertilizer plants. Our offices in Morocco have capitalized on a strong experience accompanying the largest phosphate producers, from business cases

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GB2136789A - Rock phosphate fertilizer composition ...

GB2136789A GB08406625A GB8406625A GB2136789A GB 2136789 A GB2136789 A GB 2136789A GB 08406625 A GB08406625 A GB 08406625A GB 8406625 A GB8406625 A GB 8406625A GB 2136789 A GB2136789 A GB 2136789A Authority GB United Kingdom Prior art keywords sulfur rock phosphate range phosphate fertilizer composition Prior art date 1983 …

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A kind of device and method that yellow phosphorus is ...

CN-107686099-A chemical patent summary.

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Minbos (ASX:MNB) lodges patents for phosphate rock ...

Minbos (MNB) has lodged an Australian provisional patent application for a new phosphate rock fertilizer blend from its Cabinda Phosphate Project in Angola. The provisional patent offers the potential to produce a 100 per cent organic phosphate fertilizer using less reactive phosphate rocks than in previous production.

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World Reserves of Phosphate Rock - Dynamic, Unfolding ...

Phosphate rock is an imprecise term that describes naturally occurring geologic materials (minerals) that contain a relatively high concentration of P. ... In 1842 patents were granted in England to both John Bennet Lawes and James Murray for the manufacture of P fertilizer by the process of acidulation. Although others, including Justus von ...

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US2636806A - Acidulation of phosphate rock - Google …

US2636806A US163106A US16310650A US2636806A US 2636806 A US2636806 A US 2636806A US 163106 A US163106 A US 163106A US 16310650 A US16310650 A US 16310650A US 2636806 A US2636806 A US 2636806A Authority US United States Prior art keywords calcium acid solution rock phosphate rock Prior art date Legal status …

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World Reserves of Phosphate Rock… a Dynamic and …

Phosphate rock is an im-precise term that describes naturally occurring geologic materials (minerals) that contain a relatively high concen-tration of P. The term PR is used to ... patents were granted in England to both John Bennet Lawes and James Murray for the manufacture of P fertilizer by the process of acidulation. Although others ...

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Phosphate Fertilizer - an overview | ScienceDirect Topics

Phosphate fertilisers are made from phosphorites which are either of sedimentary or to a lesser extent of magmatic origin. The most important mineral is apatite, Ca 5 [(PO 4) 3 (OH,F,Cl)]. Mining of sedimentary phosphate rock is accomplished mainly by strip mining.

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Reacting An Acid And Phosphate Rock Patents and Patent ...

Abstract: The present invention relates to a method of preparing wet process phosphoric acid, which comprises: dividing raw materials which contain phosphate rock slurry and sulfuric acid into two parts, and then feeding these two parts into two reactors separately. In the first reactor, feeding 70-90 wt. % of the total amount of the slurry and sulfuric acid, in which …

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Phosphate Deposits - USGS

2 The term "phosphate rock" is loosely applied to rocks of any origin that contain more than about 20 percent P2Os. The term "phosphorite" is equivalent in meaning, but is commonly applied only to phosphate rocks of marine origin. "Guano" is the term applied to accumulations of animal excrement, altered to various degrees through hydration ...

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(PDF) Reagents used in the flotation of phosphate ores: A ...

Phosphate rock needs processing to reduce the content of gangue minerals such as silicates, carbonates, and clays to meet the requirements of the phosphate industry. ... US Patent # …

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PHOSPHATE ROCK

Phosphate rock. Rock phosphate is the important mineral resource with numerous uses and applications in agriculture and the environment. Phosphate rock is considered the most economical fertilizer. Phosphorus is one of the essential nutrients required for plant growth; it is a deficient nutrient in most soils, especially calcareous soils.

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importation of goods covered by united states patents ...

Download or read online Importation of Goods Covered by United States Patents Process Patents on Phosphate Rock Hearings Before the subcommittee on Phosphate Rock Process Patents on H R 7851 May 5 1938 75 3 written by United States. U.S. Cong. House. Committee on patents, published by Unknown which was released on 1938.

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Minbos preparing for production of organic ... - Finfeed

The company has lodged an Australian provisional patent application for a new phosphate rock fertiliser blend with the potential to produce a organic phosphate fertiliser using less reactive phosphate rocks. By way of background, Minbos and its in-country partner, Soul Rock Ltd (15% carried interest), won the Cabinda Phosphate Project ...

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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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Phosphorite - Wikipedia

Phosphorite, phosphate rock or rock phosphate is a non-detrital sedimentary rock that contains high amounts of phosphate minerals.The phosphate content of phosphorite (or grade of phosphate rock) varies greatly, from 4% to 20% phosphorus pentoxide (P 2 O 5).Marketed phosphate rock is enriched ("beneficiated") to at least 28%, often more than 30% P 2 O …

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CN100500299C - Phosphate rock floating process - …

The phosphate rock floating process is one phosphate rock grading forward-backward floating process, in which the raw ore pulp is first separated into two parts of different fineness and then forward-backward floated in two separated branches. The coarse ore pulp is made to separated in high concentration so as to save floating chemical; while the fine ore pulp is floated through …

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