Recovery of rare earths from wet-process phosphoric acid ...

In the optimal conditions in terms of process (220°C, 3 h and L/S (1:2)), the digesting process in the presence of sulfuric acid led to the recovery of La, Ce, Nd and Y at 93.92, 92.22, 92.04 and ...

Wet Combustiont-A Tertiary Recovery Process For ...

Wet Combustiont-A Tertiary Recovery Process For the Pembina Cardium Reservoir

Recent Studies Of Uranium Recovery From Wet Process ...

Uranium recovery from wet-process acid decreased steadily because of the combined effects of extractant poisoning and precipitation of the extractant as a complex with ferric iron. Unaccountable losses of organic phase volume occurred in the continuous tests. While attempts to recover the lost organic phase were unsuccessful, the test results ...

Coconut Oil Production: Dry and Wet Process, RBD ...

2014-2-3 · Dry process. Traditional way of making coconut oil using an ox-powered mill. Coconut oil can be extracted through "dry" or "wet" processing. Dry processing requires the meat to be extracted from the shell and dried using fire, sunlight, or kilns to create copra. [10] The copra is pressed or dissolved with solvents, producing the coconut ...

Recovery of Rare Earths from Wet-Process Phosphoric ... …

2017-1-23 · 4. Rare earths and uranium recovery from WPA by solvent extraction: 4.1. The different processes for uranium recovery and their efficiency for RE recovery: There are 3 historical processes aiming to recover uranium from wet-process phosphoric acid. All these processes are based on solvent extraction, but differ by the solvent used.

On wet chemical phosphorus recovery from ...

2012-8-1 · Recovery of phosphorus and aluminium from sewage sludge ash by a new wet chemical elution process (SESAL-Phos-recovery process) Water Science and Technology, 64 ( 3 ) ( 2011 ), pp. 29 - 35 CrossRef View Record in Scopus Google Scholar

Novel Wet-Solid States Serial Anaerobic Digestion Process ...

The CH 4 recovery from the wet AD alone in the serial AD system surpassed that from the 30 d-HRT of the single-stage AD, possibly due to the appropriate HRT for labile fraction and/or the microbial recirculation. The serial wet and SS-AD was suggested as a suitable technology for the treatment of aquatic plant biomass with recalcitrant cell ...

Centrifugal Compressor Wet Seals Seal Oil De-gassing ... …

2021-6-25 · Separation and Recovery/Use Simple process of separating seal-oil and entrained gas with the gas routed to recovery and/or use. Recovery system that separates gas from the exiting seal-oil before routing to the degassing tank Recovered gas sent to various outlets: flare purge, low pressure fuel, turbine fuel ~273 psig (18.6 Bar), compressor suction

A Fundamental Study on the Wet Recovery Process of …

A Fundamental Study on the Wet Recovery Process of Mercury ...

Method of recovering neptunium from spent nuclear fuel ...

Abstract. An improved Purex wet recovery process including the step of extracting and separating uranium and plutonium simultaneously from the fission products in the presence of nitric acid and nitrous acid by using a multistage extractor unit having an extracting section and a washing section is provided for separating and recovering neptunium simultaneously with uranium and plutonium ...

Analysis of the Wettability Alteration Process ...

2008-4-20 · Improved oil recovery from fractured oil-wet carbonate reservoirs is a great challenge. The water-flooding efficiency will be low because of higher permeability in fractures than in matrix, and negative capillary pressure retains oil inside the matrix blocks. ... To simulate the wettability alteration process caused by seawater, a model is ...

(421bj) Oil Recovery System From Rolling-Mill Process by ...

2021-1-13 · Combination of wet scrubbing and distillation is a proven process to recover and recycle the oil in the vent air [1]. A packed tower type scrubber is usually employed for this process, though the adoptions are limited to large-scale plants with tons of oil consumption per day.

Uranium Recovery from Wet Process Phosphoric Acid ...

2021-10-9 · Published September 1976. A potential source of uranium is wet process phosphoric acid. Work at the Oak Ridge National Laboratory in Tennessee indicates that uranium can be extracted from the in-process phosphoric acid of a 1,000 tons P 2 O 5 /day plant at a lower cost than the then prevailing uranium price.. Some advantage may also accrue to the subsequent acid handling and processing …

Progress report on uranium recovery from wet-process ...

2017-2-3 · 1 .- PROCRESS REPORT ON URANIUM RECOVERY FROM WET-PROCESS PI-IOSPHORIC ACID WITH OCTYLPHENY L ACID PHOSPHATE W. D. Arnold D. R. McKamey C. F. Baes ABSTRACT Studies were continued to complete development of a process for recovering uranium from wet-process phosphoric acid with octylphenyl acid phosphate (OPAP), a mixture of mono- and …

Recovery of rare earths from wet-process phosphoric acid ...

2010-2-1 · Recovery of rare earths from wet-process phosphoric acid by solvent extraction is carried out in highly acidic systems. Generally, acid and neutral organo-phosphorus extractants were used with formula of (RO) 3 PO or R 3 PO with the extraction ability order of R 3 PO > R 2 (RO)PO > R(RO) 2 PO > (RO) 3 PO. In this work, Cyanex 923 (a trialkyl ...

Recovery of uranium from wet process phosphoric acid by ...

Recovery of uranium from crude wet process phosphoric acid (WPA) by cation exchange using as cation exchanger a resin comprising active amino phosphonic or hydroxy phosphonic groups linked to a matrix. The operational steps comprise reduction of uranium in the WPA to the tetravalent state, ...

Purification of wet process phosphoric acid by solvent ...

2017-1-13 · Purification of wet process phosphoric acid by solvent extraction ... 5 recovery was obtained for an MIBK percentage of 55%. Acid recovery increased for higher solvent MIBK contents whereas the impurities'' contents were lower for near equal TBP and MIBK percentages in …

Recovery of polypropylene and polyethylene from ...

Recovery of polypropylene and polyethylene from packaging plastic wastes without contamination of chlorinated plastic films by the combination process of wet gravity separation and ozonation Waste Manag. 2011 Aug;31 ...

US20090056745A1

Wet clean process for recovery of anodized chamber parts Download PDF Info Publication number US20090056745A1. US20090056745A1 US11/845,620 US84562007A US2009056745A1 US 20090056745 A1 US20090056745 A1 US 20090056745A1 US 84562007 A US84562007 A US 84562007A US 2009056745 A1 US2009056745 A1 US 2009056745A1

Recovery of Rare Earths from Wet-Process ...

Uranium recovery from wet-process acid decreased steadily because of the combined effects of extractant poisoning and precipitation of the extractant as a complex with …

Extractant and process for extracting uranium wet-process ...

A process for the recovery of uranium from wet-process phosphoric acid derived from the sulfuric acid acidulation of uncalcined phosphate rock comprising adding about 1 to 10% by volume of a modifier to an extractant comprising an about 10 to 40% by volume solution of a mixture of mono- and di-(alkylphenyl) esters of orthophosphoric acid in an ...

Uranium recovery from wet-process phosphoric ...

2021-9-8 · Studies were continued of a process for recovering uranium from wet-process phosphoric acid with octylphenyl acid phosphate (OPAP), a mixture of mono- and dioctylphenyl phosphoric acids. The mixture contained at least nine impurities, the principal one being octyl phenol, and also material that ...

Simultaneous recovery of rare earths ...

2018-1-1 · Recovery of rare earths from wet-process phosphoric acid, the Solvay experience Procedia Eng., 138 ( 2016 ), pp. 273 - 280 Article Download PDF View Record in Scopus Google Scholar

PDF Reductive Stripping Process For The Recovery Of ...

A reductive stripping flow sheet for recovery of uranium from wet-process phosphoric acid is described. Uranium is stripped from a uranium-loaded organic phase by a redox reaction converting the uranyl to uranous ion. The uranous ion is reoxidized to the uranyl oxidation state to form an aqueous feed solution highly concentrated in uranium.

Wet Air Oxidation Process and Catalyst Developments

2017-7-24 · WAO: Process Energy Recovery Zimpro® Wet Oxidation: COD > 20 g/L. 16/07/2017 13 RH + O 2 ...

Lignin Recovery and sulfuric acid production in ...

The process is designed to remove lignin from black liquor at 35-45% dry solids having a typical pH of 12-13. After filtration and washing, the dry solids content of lignin is typically 60-62% before the drying stage, and 95% after. In its most complete form, the Lignin …

Lignin Recovery

The benefits to installing Lignin Recovery technology in a kraft mill include the ability to debottleneck a recovery boiler and the potential cost savings from substituting a sustainable biofuel for purchased fossil fuels. Lignin is also being utilized as a sustainable, renewable raw material for advanced bioproducts such as composites or as a substitute for phenolic and aromatic compounds ...

Recovery of Rare Earths from Wet-Process Phosphoric Acid ...

2016-1-1 · Rare earths and uranium recovery from WPA by solvent extraction: 4.1. The different processes for uranium recovery and their efficiency for RE recovery: There are 3 historical processes aiming to recover uranium from wet-process phosphoric acid. All these processes are based on solvent extraction, but differ by the solvent used.

Recovery of rare earths from wet-process ...

Thus, about 20%-25% phosphoric acid is optimum for the wet-process phosphoric acid production. According to Becker (1983), sulphuric acid plays an essential role in the crystallization process of dehydrate. With better crystallization, there is less eutectic crystallization and adsorption between lanthanide phosphates and calcium sulphate.

THE RECOVERY OF URANIUM FROM PHOSPHORIC ACID …

2006-8-7 · The recovery of uranium from wet-process phosphoric acid is a proven technology that is being used commercially, albeit on a limited scale because currently prevailing market conditions make it marginally economic. This situation may eventually change either when the price of

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