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US Patent for Removal and recovery of phosphate from

US Patent for Removal and recovery of phosphate from

The patent described a method for recovering phosphate from sewage treatment plants using multi stage anaerobic digestion process that includes the treatment of organic acid digestate with calcium hydroxide calcium oxide and similar compounds to raise pH to near neutral values and precipitate calcium phosphate compounds such as brushite and

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US Patent Patent Application and Patent Search  Justia

US Patent Patent Application and Patent Search Justia

Catalyst solid sorbent or support therefor product or process of making Class 502 Record receiver having plural interactive leaves or a colorless color former method of use or developer therefor Class 503 Plant protecting and regulating compositions Class 504 Superconductor technology apparatus material process Class 505

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COMBINED PHOSPHORUS REMOVAL AND RECOVERY

COMBINED PHOSPHORUS REMOVAL AND RECOVERY

Recovery of solubilised phosphate by methods as chemical precipitation crystallisation or ion exchange The most common technology is the use of enhanced biological phosphorus removal followed by release of phosphate during anaerobic treatment Released phosphate may then be recovered as calcium phosphate or magnesium ammonium phosphate

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Recovery Rate Phosphate Beneficiation Process Jun

Recovery Rate Phosphate Beneficiation Process Jun

patented for thermal phosphate recovery process FICE SELECTIVE FLOCCULATION OF COLLOIDAL PHOSPHATE ORE IN THE A process for the recovery of phosphate rock from an aqueous Phosphate matrix beneficiation patent us beneficiation of phosphate Patent US Method for beneficiation of Get Price And Support Online

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Phosphorus recovery from sewage sludge ash–a wet chemical

Phosphorus recovery from sewage sludge ash–a wet chemical

Possibilities for a Phosphorus Recovery from Sewage Sludge Ash proceedings Conference on the Management of Residues Emanating from Water and Wastewater Treatment 09 12 08 The Surface

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Phosphorus Fertilizer Production and Technology

Phosphorus Fertilizer Production and Technology

History of Phosphate Fertilizer • Early sources were mostly animal based ̶ bones guano manure • Treatment of bones with acid to increase P solubility started early to mid 1800s • Sulfuric acid treatment process of bones and P minerals apatite was patented in mid 1800s • Today most P fertilizer …

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Beneficiation of Saudi phosphate ores by column flotation

Beneficiation of Saudi phosphate ores by column flotation

Due to all these advantages column flotation is applied in the present work for beneficiation of Saudi phosphate ores Al Jalamid area is one of the promising phosphate deposits in Saudi Arabia The physical analysis carried out on this ore revealed that the mineralogical composition is mainly flouroapatite and calcite with small quartz content

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Phosphorus recovery from sewage sludge ash–a wet chemical

Phosphorus recovery from sewage sludge ash–a wet chemical

Possibilities for a Phosphorus Recovery from Sewage Sludge Ash proceedings Conference on the Management of Residues Emanating from Water and Wastewater Treatment 09 12 08 The Surface

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BISMUTH PHOSPHATE CARRIER PROCESS FOR Pu RECOVERY Patent …

BISMUTH PHOSPHATE CARRIER PROCESS FOR Pu RECOVERY Patent …

A bismuth phosphate carrier precipitation process is patented for separating plutonium from fission products Purification of plutonium is accomplished by precipitating bismuth phosphate in the presence of quadrivalent plutonium thereby carrying plutonium from soluble fission products and in another step precipitating bismuth phos phate in the presence of hexavalent plutonium thereby

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Beneficiation of Saudi phosphate ores by column flotation

Beneficiation of Saudi phosphate ores by column flotation

Due to all these advantages column flotation is applied in the present work for beneficiation of Saudi phosphate ores Al Jalamid area is one of the promising phosphate deposits in Saudi Arabia The physical analysis carried out on this ore revealed that the mineralogical composition is mainly flouroapatite and calcite with small quartz content

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phosphate ore treatment

phosphate ore treatment

US4289612A Phosphate ore triple float Google Patents A process for the improved beneficiation of phosphate ore in which the double float cationic amine floatation step is performed in two stages instead of the standard single stage and which permits recovery of approximately twothirds of the phosphate values that were previously lost in

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Cooling Tower Water Treatment  SUEZ

Cooling Tower Water Treatment SUEZ

The only entirely new patented polymer to be introduced by a cooling tower water treatment company in the last 20 years is SUEZ’s Stress Tolerant Polymer STP Combined with SUEZ’s non phosphate Alkaline Enhanced Chemistry AEC these molecules form …

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RecoPhos  Recovery of Phosphorus

RecoPhos Recovery of Phosphorus

„RecoPhos Recovery of Phosphorus“ Recovery of Phosphorus from Sewage Sludge and Sewage Sludge Ashes with the thermo reductive RecoPhos Process Phosphorus is a key natural resource for agriculture and other industry sectors – but natural phosphate sources are getting scarce

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Vichem  Chemical Technology

Vichem Chemical Technology

Both the rate of recovery of P 2 O 5 and the P 2 O 5 content in the produced phosphoric acid will be increased with this process of approximately 1 5 more than with other dihydrate processes for the same phosphate rock characteristics The phosphate rock used can have a …

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Thermal treatment of phosphate rock Patent  OSTI GOV

Thermal treatment of phosphate rock Patent OSTI GOV

article osti 5889698 title Thermal treatment of phosphate rock author Mair A D abstractNote An improved process for double stage calcining organic matter contaminated phosphatic apatite rock of the mineral class generally known as francolites is described The improved process results in the effecting of an intermediate phosphate rock calcine in a form eminently suitable for

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An environment friendly process for recovering phosphates

An environment friendly process for recovering phosphates

The Budenheim Carbonic Acid Process Flow chart of the patented Budenheim Carbonic Acid Process Sewage sludge Water CO 2 Water CO 2 CO 2 7 Phosphate Percentage phosphate recovery Agitation in combination with lime water addition 13 0 10 20 30 40 50 • No need for thermal or chemical treatment • Production of sustainable phosphates

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SURFACE PRETREATMENT BY PHOSPHATE CONVERSION …

SURFACE PRETREATMENT BY PHOSPHATE CONVERSION …

SURFACE PRETREATMENT BY PHOSPHATE CONVERSION COATINGS ΠA REVIEW T S N Sankara Narayanan National Metallurgical Laboratory Madras Centre CSIR Complex Taramani Chennai 113 India Received Ap Abstract Phosphating is the most widely used metal pretreatment process for the surface

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BISMUTH PHOSPHATE CARRIER PROCESS FOR Pu RECOVERY …

BISMUTH PHOSPHATE CARRIER PROCESS FOR Pu RECOVERY …

nbsp 0183 32 A bismuth phosphate carrier precipitation process is patented for separating plutonium from fission products Purification of plutonium is accomplished by precipitating bismuth phosphate in the presence of quadrivalent plutonium thereby carrying plutonium from soluble fission products and in another step precipitating bismuth phos phate in the presence of hexavalent plutonium thereby

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STRUVIA™ Phosphorus Recovery and Harvesting System

STRUVIA™ Phosphorus Recovery and Harvesting System

Struvia™ Phosphorus Recovery and Harvesting uses a patented mixer TurboMix™ in combination with lamella settlers to produce and separate struvite crystals from the wastewater within a single reactor with a small footprint making it an economical phosphorous recovery process

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US3304157A  Process for the recovery of    Google Patents

US3304157A Process for the recovery of Google Patents

The recovery of P in the total process including the decomposition of tricalcium phosphate and in particular rock phosphate with aqueous hydrochloric acid the extraction of phosphoric acid with an amide extractant according to the invention and the recovery of the phosphoric acid from the solvent extract is of the order of 98 i e

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Process for the production of dicalcium phosphate  Fox

Process for the production of dicalcium phosphate Fox

It consumes not only forty percent more reagent acid than the superphosphate method of producing available phosphate but also requires calcium hydroxide equivalent to the dicalcium phosphate produced In my process the use of milk of lime is eliminated and the acid consumed in the production of dicalcium phosphate is reduced to about sixty

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SURFACE PRETREATMENT BY PHOSPHATE CONVERSION …

SURFACE PRETREATMENT BY PHOSPHATE CONVERSION …

SURFACE PRETREATMENT BY PHOSPHATE CONVERSION COATINGS ΠA REVIEW T S N Sankara Narayanan National Metallurgical Laboratory Madras Centre CSIR Complex Taramani Chennai 113 India Received Ap Abstract Phosphating is the most widely used metal pretreatment process for the surface

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Claus process  Wikipedia

Claus process Wikipedia

The Claus process is the most significant gas desulfurizing process recovering elemental sulfur from gaseous hydrogen sulfide First patented in 1883 by the chemist Carl Friedrich Claus the Claus process has become the industry standard C F Claus was born in Kassel in the German State of Hessen in 1827 and studied chemistry in Marburg before he emigrated to England in 1852

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US Patent for Processes and equipment for production of

US Patent for Processes and equipment for production of

New processes and equipment are disclosed for producing elemental phosphorus and thermal phosphoric acid Benefits are listed below 1 Phosphorus containing solids are recycled to smelting furnaces thus eliminating hazardous waste generation 2 Phosphorus furnace feedstock is upgraded and this permits unbeneficiated phosphate ore to be smelted 3

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AirPrex™ Biosolids Treatment Optimization Process with

AirPrex™ Biosolids Treatment Optimization Process with

recovery AirPrex™ Sludge water recovery Ash recovery Phosphate product quantity Phosphate product quality Interruption of P recycling internal Prevention of scaling in pipes and pumps Optimization of the dewatering process Pros and Cons of different P Recovery processes

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11 21 Phosphate Rock Processing  US EPA

11 21 Phosphate Rock Processing US EPA

11 21 Phosphate Rock Processing 11 21 1 Process Description 5 The separation of phosphate rock from impurities and nonphosphate materials for use in fertilizer manufacture consists of beneficiation drying or calcining at some operations and grinding The Standard Industrial Classification SIC code for phosphate rock processing is 1475 The

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us patent beneficiation of rock phosphate  BINQ Mining

us patent beneficiation of rock phosphate BINQ Mining

nbsp 0183 32 Process for phosphate beneficiation – US Pat5 … The present invention relates to a froth flotation method for the beneficiation of phosphate …rock Phosphate rock is …United States patents which … 187 More detailed

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phosphate ore treatment

phosphate ore treatment

US4289612A Phosphate ore triple float Google Patents A process for the improved beneficiation of phosphate ore in which the double float cationic amine floatation step is performed in two stages instead of the standard single stage and which permits recovery of approximately twothirds of the phosphate values that were previously lost in

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phosphate rock bin

phosphate rock bin

patented for thermal phosphate recovery process The second consists of either thermal reduction of the phosphate rock or other thermal The patented process was phosphate rock beneficiation plant concentrate bin Read More 06 February SSP Process Description Used Plants

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Claus process  Wikipedia

Claus process Wikipedia

The Claus process is the most significant gas desulfurizing process recovering elemental sulfur from gaseous hydrogen sulfide First patented in 1883 by the chemist Carl Friedrich Claus the Claus process has become the industry standard C F Claus was born in Kassel in the German State of Hessen in 1827 and studied chemistry in Marburg before he emigrated to England in 1852

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