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The accuracy and precision of the used methods were evaluated by analysis of standard reference materials SRM for Western Phosphate Rock NIST 694 The recovery was % for U and 109% for K 2 O and the RSD ranged from % to % Keywords phosphate rock wet phosphoric acid phosphate fertilizers elemental analysis 1 Introduction
·For REEs recovery from leaching solutions originated from phosphate rock by acid decomposition methods such as precipitation crystallization solvent extraction ion exchange have been systematically studied 17 18 19 Each method has its own advantages and disadvantages For instance due to the merits of simple technology and easy application
·A new method of phosphate rock magnesium removal in nitric acid was The mathematical model of phosphorus and magnesium release in the process of phosphate rock magnesium removal in the nitric acid method was The P 2 O 5 loss ratio could be controlled within % with the MgO removal ratio reaching 85 % in the
· Tested phosphate rock PR produced in the Kodjari deposit Burkina Faso was tested as one of the low grade PRs in SSA According to Trompette Citation 1989 PRs in Kodjari are thought to be Proterozoic sedimentary deposits and their reserve was estimated to be 60 million PRs can be purchased commercially for 4500 Franc CFA per 50 kg
·Purpose Rock phosphate RP and farm yard manure FYM can promote plant growth but little is known about the effect of sugar juice residues FMC on Zn Cu Cd and Pb phyto availability This study investigated the effects of FYM and FMC added alone or each in combination with RP on wheat growth and Zn Cu Cd and Pb uptake Methods Wheat was
·Phosphorus is related to global human food security and the global reserves of phosphate rock are gradually depleting Phosphorus recovery from wastewater is urgently needed both in terms of laws and regulations and food security This article reviews the methods influencing factors and mechanism of phosphorus recovery from sewage and sludge
·method exhibits suitable accuracy and precision with simple and mild operating conditions and is good for determining P and I in phosphate rock Keywords Phosphate rock · P and I determination · Acid digestion · Distillation · Ion chromatography Introduction Phosphorus is an essential element for plant growth bones
·A green and easy to operate method the microwave technology was developed to promote the desulfurization process of phosphate rock systematically investigates the strengthening effect of microwave and uses XRD BET SEM XRF ICP and EDS to characterize the reactants The results show that the main reason for the desulfurization efficiency is
DOI /ppmp/156202 Corpus ID 253412587; Influence of measuring process properties on phosphate rock slurry rheology based on Brookfield method article{Chen2022InfluenceOM title={Influence of measuring process properties on phosphate rock slurry rheology based on Brookfield method} author={Aoao Chen and Qin Zhang} journal={Physicochemical Problems
·The phosphate extraction method employed is strip mining involving trench extraction in dimensions of 40x1 000 m each Production begins with stripping operations generating spoil piles SP the primary subject of this study The recovered phosphate rock can join the finer portion to contribute to the final products It can be used for
·Development of a simple and fast ultrasound assisted extraction method for iodine determination in phosphate rock and phosphogypsum by product using titrimetric method Kamal Benali a Chemical and Biochemical Sciences Green Process Engineering Department CBS Mohammed VI Polytechnic University Benguerir Morocco Correspondence
Hydrogels immobilizing nitrifying bacteria with different thicknesses of and cm and respectively were produced It was recognized that the thickness of media is a
·Phosphate rock is an important mineral resource used for the manufacturing of phosphate fertilizers detergents and animal feed El Zrelli et al 2018; Wang et al 2020 The most important phosphate deposits in the world are of sedi mentary origin Mehmood et al 2009 which are mainly composed of carbonate uorapatite as the main phosphate
·This research aims to explore the effect of ultrasound irradiation as a pretreatment method on the reverse flotation of phosphates Ultrasonic treatment was used prior to flotation at various ultrasound intensities The feed sample containing % P2O5 and % CaO was obtained from Lar mountain located in southwest of Iran Flotation
·The results of the present study revealed that the co composting of green wastes with rock phosphate constitutes a feasible and sustainable strategy to enhance the bioavailability of P from rock phosphate but also a suitable method to manage green wastes reducing N losses during the process and obtaining P enriched composts that can be used
·The two major methods to process phosphate rock are the wet method and the thermal method each of which produces different products Fig presents the two major processing methods for phosphate rock their products by products and typical end uses of the products Corbridge 1995; Goldwhite 1981; Yapijakis & Wang 2004
·A new phosphate rock mine began operation near Spanish Forks UT in July 2020 The operating company will market its phosphate rock for direct application to soil for organic farming Production initially was to be about 5 000 tons per year eventually increasing to 48 000 tons per year after 5 years The mine site was developed in the
·Phosphoric acid H 3 PO 4 which is the base material for the industrial production of phosphorus containing products is produced from phosphate rock through both wet and dry processes Al
A method is disclosed for the manufacture of phosphoric acid directly from phosphate rock wherein the crushed phosphate rock is mixed with dilute phosphoric acid to form a slurry and the slurry is then heated to produce calcium monophosphate Thereafter oxalic acid is added to the slurry to precipitate the calcium therein as calcium oxalate which is separated
Phosphate Rock An Industry in Transition takes an interdisciplinary approach to dealing with the phosphate rock chain and its exploration extraction processing fertilizer making and storage and transportation The book treats the subject from a global perspective giving readers insights into what is happening in the emerging economies of
·China is very rich in phosphate rock resources; the reserves reached billion tons which is the second only to Morocco at the end of 2015 Ren et al 2015 Moreover China is by far the largest producer of phosphate rock in the world Shang et al 2021 Iodine is one of the scarce resources in the world Ren et al 2015 Willey and Timbs 2022
