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patented for thermal phosphate recovery process

US Patent for Method for recovery of phosphate Patent

May 19, 2017· The present invention provides a method for recovery of phosphate, in the form of magnesium ammonium phosphate (MAP), from a process for treating a biomass material which process comprises a digestion step performed in a digestion tank and includes a pre-treatment step employing a thermal hydrolysis, characterized in that a magnesium source is added to the material in the process

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patented for thermal phosphate recovery process

Phosphorus recovery and recycling1.33 Мб. 55 figure 35: the patented version of the s eaborne process (modified from VFrom the phosphorus recovery point of view, it creates a phosphate rich side stream that can beThe company replaces the phosphate rock in the electro-thermal process

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CN201942519U Thermal energy recovery Google Patents

The thermal energy recovery and utilization device in production of thermal phosphoric acid belongs to the technical field of the energy saving and emission reduction. A production line main body consists of a yellow phosphorus evaporation burning tower, a thermal energy recovery device (a steam boiler) and a hydration tower. The yellow phosphorus flowing into the evaporation burning tower

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US9061221B2 Phosphate recovery from sludge Google Patents

A process for recovering reusable materials, in particular phosphate, from sewage sludge products, namely sewage sludge, sewage sludge ash or sewage sludge slag, by extraction, in which a suspension of the sewage sludge product is produced in water, alcohol, water-alcohol mixture or an aqueous solution, gaseous carbon dioxide (CO 2 ) or supercritical carbon dioxide (scCO 2 ) is introduced as

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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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US Patent for Multiple-stage thermal beneficiation process

A multiple-stage thermal beneficiation process for phosphate ores which comprises calcining a phosphate ore in a first stage at a temperature sufficient to destroy substantial quantities of organic impurities in the phosphate ore but not so high as to cause excessive sulfide formation; followed by the calcining of the product from the first stage in a second stage at a temperature at which an

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Lithium Australia advances patent for ‘revolutionary

Aug 06, 2020· Process route. Patent application PCT/AU2019/050540 details Lithium Australia’s process for recovering lithium phosphate from lithium-bearing solutions such as brine or pregnant process liquor. If granted, it will protect the company’s process route, developed during testwork prior to completion of the SiLeach® pilot program in 2018.

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PARFORCE an innovative phosphorus-recovery process

The static lifetime of phosphate reserves is at present stated to be approx. 300 years [6, 7]. The recovery of pure phosphoric acid from sewage-treatment sludge and other phosphate-containing waste as implemented in the PARFORCE process for specific applications is significantly more advantageous than merely again producing a fertiliser.

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Physical and thermal treatment of phosphate ores — An

Jan 31, 2008· The improved phosphate recovery with PEO addition was attributed to the improved froth stability and improved dispersion/adsorption of fatty acid due to the apparent interaction between PEO and the Thermal treatment of phosphate ores. The process transforms phosphate mineral to the defluorinated phosphate with a P/F ratio of more than

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THERMAL HYDROLYSIS OF SEWAGE SLUDGE AND THE

thermal hydrolysis, digestion, dewatering, centrate water treatment, ammonia recovery, phosphate recovery, struvite Introduction Treatment of domestic wastewater is an energy consuming process. On a wwtp the net energy consumption is approximately 20

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Process for the recovery of phosphate from phosphate rock

There is disclosed a wet process for the recovery of phosphate from phosphate rock which comprises leaching finely divided particles of phosphate rock with a protic acid at a temperature and for a tim United States Patent 6562308 . Abstract:

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Removal and recovery of phosphate from liquid streams

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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PROCESS FOR THE RECOVERY OF PHOSPHATE FROM PHOSPHATE ROCK

There is disclosed a wet process for the recovery of phosphate from phosphate rock which comprises leaching finely divided particles of phosphate rock with a protic acid at a temperature and for a time that favours dissolution, into a leachate, of the phosphate in

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Physical and thermal treatment of phosphate ores — An

Jan 31, 2008· The improved phosphate recovery with PEO addition was attributed to the improved froth stability and improved dispersion/adsorption of fatty acid due to the apparent interaction between PEO and the Thermal treatment of phosphate ores. The process transforms phosphate mineral to the defluorinated phosphate with a P/F ratio of more than

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Phosphoric acid recovery from concentrated aqueous feeds

and precipitation stages. In the thermal process, phosphorus is rst produced by reduction of the phosphate rock, followed by re-oxidation and hydration to give phosphoric acid. Despite the production of a very high-grade phosphoric acid, the thermal route has

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The 3R Zero Emission Pyroylsis & Phosphorus Recovery

Dec 14, 2020· The 3R zero emission pyrolysis is an advanced and added value recycling and reuse of un-exploited biomass for recovery of concentrated Phosphorus and natural BioPhosphate products. In a world with finite resources there is no infinite development opportunity with sustainability, unless circular economy is not fully implemented. In this context there is no one fit for all processing technology

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Comprehensive Recovery and Sustainable Development of

Jan 01, 2014· Improving Phosphate Recovery in the Mining Process The overall recovery of phosphate reserve in the mining process is within the low 80 percent range at its best worldwide. Some of this recovery loss is due to selective mining to bypass the difficult-to-process portions, but the majority is caused by the lack of instant information on the

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THERMAL HYDROLYSIS OF SEWAGE SLUDGE AND THE

thermal hydrolysis, digestion, dewatering, centrate water treatment, ammonia recovery, phosphate recovery, struvite Introduction Treatment of domestic wastewater is an energy consuming process. On a wwtp the net energy consumption is approximately 20

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SusPhos

The patented SusPhos process is a robust process that can produce a variety of market known, high-quality phosphate products. These range across several markets, including the flame-retardant and fertilizer industries.

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phosphate processing crusher

phosphate processing crusher. Crawler Mobile Crusher Combination Mobile Crushing Plant C6X Series Jaw Crusher Processing And Refining Of Phosphate Processing And Refining Of Phosphate This refining process can treat almost any kind of edible oils and fats but it involves the producalkali tion of soapstocks and has a refined oil yield lower than the one physically obtainable even if of more

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Thermal Processing in the Fertilizer Industry

Thermal Processing Systems Fluid Bed GEA Barr-Rosin Fluid Beds are increasingly used for a broad range of fertilizer products. Capital cost, size and weight are reduced compared with conventional systems. Drying and cooling time is also shorter as the high heat transfer coefficient is achieved in the fluidized state. The process is gentle

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Phosphate Recovery from Human Waste via the Formation of

While calcium was critical for phosphate removal, magnesium and bicarbonate had only minor impacts on phosphate removal rates at concentrations typical of toilet wastewater. Optimal conditions for phosphate removal were 3 to 4 h treatment at about 5 mA cm–2 (∼3.4 V), with greater than 20 m2 m–3 electrode surface area to reactor volume ratios.

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Merchant Grade Acid The Vichem Group Your environment

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 P 2 O 5 content as low as 28%. Increase of the stability:

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(PDF) From sewage sludge ash to calcium phosphate fertilizers

lution for the precipitation process of useful phosphate . which again are influenced by the preceding thermal process conditions, e a flowsheet of the recovery process of phosphoric acid

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