CONTACT US

Our Address

Science Avenue, High-tech Zone, Zhengzhou City, Henan Province, China

  • Phosphogypsum - Wikipedia

    Phosphogypsum refers to the calcium sulfate hydrate formed as a by-product of the production of fertilizer from phosphate rock.It is mainly composed of gypsum (CaSO 4 2H 2 O). Although gypsum is a widely used material in the construction industry, phosphogypsum is usually not used, but is stored indefinitely because of its weak radioactivity.The long-range storage is controversial.

  • PHOSPHATE ROCK – REGYP – Recycling Solutions

    Rock phosphate, can mineralise the soil and improve the quality of crops and soil structure. However, its principal uses are to build phosphate fertility where levels are low and/or to increase rooting activity in transplants and sprouting seeds. Gypsum 90%. Calcium 23%. Sulphur 17%. Organics (paper) 2%. PRODUCT QUALITIES. Unlike acidulated phosphates, such as triple super phosphate, Phosphate ...

  • Phosphogypsum - an overview ScienceDirect Topics

    Possible sources of Po are the U-rich phosphate rock and phosphogypsum (gypsum), a by-product in manufacturing phosphoric acid. Experiments involving the interaction of bacteria with this waste gypsum demonstrated the solubilization of Po. Sulfate-reducing bacteria particularly were effective at mediating Po release, provided that the sulfide levels did not rise above 10 μM, in which case Po ...

  • Gypsum / Fluorspar / Rock Phosphate - Fluorspar Lump ...

    Gypsum is a very soft mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO 4 2H 2 O Rock phosphate is a general term for rock that contains a high concentration of phosphate minerals, which commonly belong to the apatite group. Phosphate rock minerals are the only significant global resources of phosphorus. Phosphorus ...

  • US3807556A - Phosphate rock flotation - Google Patents

    A process for beneficiating phosphate rock containing siliceous and carbonaceous gangue materials and gypsum which comprises the steps of subjecting comminuted phosphate rock to a first stage anionic flotation step to float phosphates from siliceous material, conditioning the float product in an aqueous solution containing added phosphate ion and sulphate ion, subjecting the conditioned float ...

  • Byproducts - The Phosphate Risk

    In Florida, the phosphate rock is sent to processing plants in which it undergoes "wet process" to convert it into phosphoric acid. In the process, sulfuric acid is added to the phosphate to create phosphoric acid — which is easily absorbed by plants. Phosphogypsum (or “gypsum”), a radioactive material, is a byproduct of this process. Because it cannot be disposed of in the usual way ...

  • PHOSPHATE ROCK FLOTATION - COMINCO LTD,CA

    30/04/1974  A process for beneficiating phosphate rock containing siliceous and carbonaceous gangue materials and gypsum which comprises the steps of subjecting comminuted phosphate rock to a first stage anionic flotation step to float phosphates from siliceous material, conditioning the float product in an aqueous solution containing added phosphate ion and sulphate ion, subjecting the conditioned float ...

  • RSMML - Mining of Rock phosphate, gypsum, Lignite ...

    Phosphate: Limestone: Gypsum: Lignite: Carbon Emission Reduction (CERs) Reports: Performance Indicator : Mining - Gypsum: We are the country’s leading producer of natural Gypsum and Selenite producing about 3.0 million tonnes per year. These are mined in the heart of the Thar desert areas where the working conditions are very harsh. The deposits are shallow and scattered over large areas ...

  • Phosphogypsum Stacks - Florida Industrial and Phosphate ...

    America is blessed with abundant low-cost natural gypsum. There is also an abundance of flue gas desulfurization gypsum produced as a by-product of coal-fired power plants. As a result, the market for the phosphogypsum generated by the chemical processing of phosphate rock has traditionally been limited. It has traditionally been piled on land. This was the least expensive way to deal with the ...

  • Uranium from Phosphates Phosphorite Uranium - World ...

    Source: USGS 2020 1. Phosphate rock (phosphorite) is a marine sedimentary rock which contains 18-40% P 2 O 5, as well as some uranium and all its decay products, often 70 to 200 ppmU, and sometimes up to 800 ppm.The main mineral in the phosphate rock is apatite, and most commonly, fluorapatite – Ca 5 (PO 4) 3 F or Ca 10 (PO 4) 6 (F,OH) 2.This is insoluble, so cannot directly be used as a ...

  • US3807556A - Phosphate rock flotation - Google Patents

    A process for beneficiating phosphate rock containing siliceous and carbonaceous gangue materials and gypsum which comprises the steps of subjecting comminuted phosphate rock to a first stage anionic flotation step to float phosphates from siliceous material, conditioning the float product in an aqueous solution containing added phosphate ion and sulphate ion, subjecting the conditioned float ...

  • PHOSPHATE ROCK FLOTATION - COMINCO LTD,CA

    30/04/1974  A process for beneficiating phosphate rock containing siliceous and carbonaceous gangue materials and gypsum which comprises the steps of subjecting comminuted phosphate rock to a first stage anionic flotation step to float phosphates from siliceous material, conditioning the float product in an aqueous solution containing added phosphate ion and sulphate ion, subjecting the conditioned float ...

  • phosphorite Definition, Formation, Uses Britannica

    Phosphorite, also called phosphate rock, rock with a high concentration of phosphates in nodular or compact masses. The phosphates may be derived from a variety of sources, including marine invertebrates that secrete shells of calcium phosphate, and the bones and excrement of vertebrates. Read More on This Topic . sedimentary rock: Phosphorites. Many sedimentary rocks contain phosphate

  • Byproducts - The Phosphate Risk

    In Florida, the phosphate rock is sent to processing plants in which it undergoes "wet process" to convert it into phosphoric acid. In the process, sulfuric acid is added to the phosphate to create phosphoric acid — which is easily absorbed by plants. Phosphogypsum (or “gypsum”), a radioactive material, is a byproduct of this process. Because it cannot be disposed of in the usual way ...

  • Mining Of Rock Phosphate Gypsum Lignite Limestone India

    RSMML Mining of Rock phosphate, gypsum, Lignite Mining Limestone: It was the recommendation of the technical team constituted by Govt. of India in the year 1986 after assessing the various limestone deposits available in the country that the low silica limestone available from Jaisalmer is the best suited for use in the Steel Industry. Limestone Mines In India loscugnizzo . list of limestone ...

  • Phosphate Rock Gypsum Blends – PACIFIC FERTILISER

    Pacific Fertiliser can blend soft rock phosphate with natural gypsum to make an organic single super blend. The application rates for phosphorous below are equivalent 125kg/ha of Single Super. 70/30 blend – (0-7-0-5) – 165kg/ha. 60/40 blend – (0-6-0-7) – 193kg/ha. 50/50 blend – (0-5-0-9) – 232kg/ha . Generally for the organic blends it is best to go on a bit heavier due to the ...

  • Rock Phosphate - IndiaMART

    Rajasthan State Mines Minerals Limited - Manufacturer of rock phosphate, gypsum lignite in Girwa, Rajasthan. + Read More. Nature of Business. Manufacturer. Legal Status of Firm. Limited Company (Ltd./Pvt.Ltd.) GST Number. 08AAFCR1250F1ZO. Products Services. Interested in this product? Get Best Quote. Rock Phosphate . Get Latest Price. Rockphosphate. We are producing following

  • Gypsum Mosaic Crop Nutrition

    Gypsum is also a byproduct from processing phosphate rock into phosphoric acid. Gypsum from recycled wallboard is finely ground and applied to soil as fertilizer. Chemical properties. Agricultural use. Farmers typically add gypsum (sometimes called land plaster) to soils either to nourish plants or modify and improve soil properties. Gypsum is somewhat soluble in water, but more than 100 times ...

  • Gypsum Crystallization during Phosphoric Acid Production ...

    12/05/2015  consumption, the advantages such as no phosphate rock quality requirement, low operating temperature, infrequent main-tenance, simple startup and shutdown operation, and easy scalability still make the dihydrate process the most widely used technique.1 Immediately after the reactive crystallization step, filtration is carried out to separate acid from gypsum crystals. The

  • RSMML - Mining of Rock phosphate, gypsum, Lignite ...

    Rock Phosphate mines at Jhamarkotra Kanpur Group of Mines are complex deposits. Mining these rock phosphate deposits is far more difficult than that in most parts of the world. Despite the complexities of the deposit, excellent results have been achieved by continuous innovations. With an annual rock handling of about 20 million tonnes, Jhamarkotra is probably the largest open cast mine

  • Byproducts - The Phosphate Risk

    In Florida, the phosphate rock is sent to processing plants in which it undergoes "wet process" to convert it into phosphoric acid. In the process, sulfuric acid is added to the phosphate to create phosphoric acid — which is easily absorbed by plants. Phosphogypsum (or “gypsum”), a radioactive material, is a byproduct of this process. Because it cannot be disposed of in the usual way ...

  • Rock Phosphate - IndiaMART

    Rajasthan State Mines Minerals Limited - Manufacturer of rock phosphate, gypsum lignite in Girwa, Rajasthan. + Read More. Nature of Business. Manufacturer. Legal Status of Firm. Limited Company (Ltd./Pvt.Ltd.) GST Number. 08AAFCR1250F1ZO. Products Services. Interested in this product? Get Best Quote. Rock Phosphate . Get Latest Price. Rockphosphate. We are producing following

  • Phosphate Rock Gypsum Blends – PACIFIC FERTILISER

    Pacific Fertiliser can blend soft rock phosphate with natural gypsum to make an organic single super blend. The application rates for phosphorous below are equivalent 125kg/ha of Single Super. 70/30 blend – (0-7-0-5) – 165kg/ha. 60/40 blend – (0-6-0-7) – 193kg/ha. 50/50 blend – (0-5-0-9) – 232kg/ha . Generally for the organic blends it is best to go on a bit heavier due to the ...

  • Phosphate Rock Products - Recycling Solutions

    Rock phosphate (RPR) is a natural products, suitable for organic use similar to our mined gypsum products. Elemental Sulphur blended in with the RPR can be required to overcome the constraint on the dissolution of RPR resulting from frequent periods of low soil moisture. From the 2005 study it was concluded that for the south-eastern cropping zone, co-treatment of ground-reactive rock ...

  • Phosphoric Acid and Dolomite Mineral Wholesale Trader ...

    Shiv Chemicals has carved a niche in the market. The company was commenced in the year 1995 as a sole propriertorship based firm. We are highly known in the market as a trader, distributor, exporter, importer, wholesaler and supplier. We have a wide range of Rock Phosphate, Phosphoric Acid and more. The offered products are well tested upon ...

  • Products - Inkerman Lime Gypsum

    Winton gypsum; Pulverised lime; Rock phosphate; Customised blends* Lime. Lime is a conditioner of soil and plays an important part in rectifying the three key changes occurring in Australian soil. Lime: Neutralizes acidity, Replenishes humus, and; Is calcium rich. 10 Benefits of Lime: It is a major source of calcium (Ca), an essential nutrient. It corrects acidification. It reduces aluminium ...

  • Natural radioactivity in phosphate fertilizers SpringerLink

    At the retrieval of phosphate from the rock, gypsum is formed whose release causes environmental problems. The contamination of land and food with radioactivity is compared with current legislation in the Netherlands. This is a preview of subscription content, log in to check access. Access options Buy single article. Instant access to the full article PDF. US$ 39.95. Price includes VAT for ...

  • Gypsum Crystallization during Phosphoric Acid Production ...

    12/05/2015  consumption, the advantages such as no phosphate rock quality requirement, low operating temperature, infrequent main-tenance, simple startup and shutdown operation, and easy scalability still make the dihydrate process the most widely used technique.1 Immediately after the reactive crystallization step, filtration is carried out to separate acid from gypsum crystals. The

  • Soda Springs Phosphate Ida Gro Pelletized Gypsum

    Soda Springs Phosphate Ida Gro Pelletized Gypsum Page 2 of 11 Preparation Date: 6/5/15 Emergency Overview: May cause skin or respiratory irritation based on prolonged or repeated overexposure to high concentrations. Irritation is believed to be mild to moderate and reversible.

  • Novaphos: The Future of Phosphorus

    We have developed a proprietary technology for producing high-quality phosphoric acid from low-quality phosphate rock without producing large-volume wastes like phospho-gypsum. LEARN MORE → Essential for Life. Phosphates have no substitute, and almost all phosphate comes from a limited mineral resource. We have developed a technology that brings sustainability to this vital industry. LEARN ...

  • Phosphate Rock Products - Recycling Solutions

    Rock phosphate (RPR) is a natural products, suitable for organic use similar to our mined gypsum products. Elemental Sulphur blended in with the RPR can be required to overcome the constraint on the dissolution of RPR resulting from frequent periods of low soil moisture. From the 2005 study it was concluded that for the south-eastern cropping zone, co-treatment of ground-reactive rock ...

  • Phosphogypsum - Wikipedia

    Phosphogypsum refers to the calcium sulfate hydrate formed as a by-product of the production of fertilizer from phosphate rock.It is mainly composed of gypsum (CaSO 4 2H 2 O). Although gypsum is a widely used material in the construction industry, phosphogypsum is usually not used, but is stored indefinitely because of its weak radioactivity.The long-range storage is controversial.

  • Wanted : Rock Phosphate, Gypsum. Buyer from India.

    I have to purchase rock phosphate and gypsum with the below terms conditions: Shipping Terms : FOB Or CIF Destination Port : Udaipur Payment Terms : L/C Or T/T Exporters from worldwide can contact us ASAP. Regards Contact : R*****

  • Wear and corrosion of 12 alloys during laboratory milling ...

    Tests were conducted on oblate spheroids or cylindrical specimens in 12- and 60-cm-diam ball mills by grinding phosphate rock in gypsum pond water with a starting ph of 1.6. For comparison, tests were conducted while grinding phosphate rock in plain water. Static corrosion tests in gypsum pond water also were conducted. For all alloys, the wear by erosion- corrosion (milling with gypsum pond ...

  • Mining Of Rock Phosphate Gypsum Lignite Limestone India

    RSMML Mining of Rock phosphate, gypsum, Lignite 2018-8-23 Mining Limestone: SANU LIMESTONE UNIT, JAISLAMER. H igh quality Limestone is a technological necessity for Steel Plants with the basic oxygen furnance technology where it is used as a flux. Top 10 Mining companies in India Business. The company is engaged in non-metallic mining of Lignite, Rock phosphate, limestone and gypsum. It

  • Gypsum Crystallization during Phosphoric Acid Production ...

    12/05/2015  consumption, the advantages such as no phosphate rock quality requirement, low operating temperature, infrequent main-tenance, simple startup and shutdown operation, and easy scalability still make the dihydrate process the most widely used technique.1 Immediately after the reactive crystallization step, filtration is carried out to separate acid from gypsum crystals. The

  • Treatment of phosphate rock in soil to provide fertilizer ...

    07/09/1976  The method of providing available phosphate and gypsum to soil comprising: a. applying in situ to soil to be treated granules consisting essentially of phosphate rock containing phosphorus and calcium, said rock being previously untreated by sulfuric acid; and . b. applying to the soil after application of said granules water into which sulfur dioxide gas has been dissolved whereby to ...

  • The solubility of rock phosphate as influenced by sulphur ...

    The solubility of rock phosphate as influenced by sulphur and gypsum Winfield Scott Iowa State College Follow this and additional works at:https://lib.dr.iastate.edu/rtd Part of theAgriculture Commons,Agronomy and Crop Sciences Commons, and theSoil Science Commons This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and

  • Novaphos: The Future of Phosphorus

    We have developed a proprietary technology for producing high-quality phosphoric acid from low-quality phosphate rock without producing large-volume wastes like phospho-gypsum. LEARN MORE → Essential for Life. Phosphates have no substitute, and almost all phosphate comes from a limited mineral resource. We have developed a technology that brings sustainability to this vital industry. LEARN ...

  • Nitrophosphate Mosaic Crop Nutrition

    The process uses nitric acid instead of sulfuric acid for treating phosphate rock and doesn’t produce gypsum byproducts. Production. The majority of commercial phosphorus (P) fertilizer is made by reacting raw phosphate rock with sulfuric or phosphoric acid. The sulfuric acid method of producing P fertilizer results in large amounts of calcium sulfate (gypsum) byproduct that incurs ...