MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
Hydrochloric acid decomposition of phosphate rock
Treatment of phosphate rocks with hydrochloric acid
2011年7月1日 Phosphate rocks were leached with hydrochloric acid; and radium was removed by coprecipitation with BaSO4 Uranium and 2020年10月15日 Using HCl to replace H 2 SO 4, phosphate rock is decomposed according to the following reaction: (2) C a 5 F P O 4 3 + 10 H C l → 3 H 3 P O 4 + 5 C a C l 2 + H F Separation of H3PO4 from HClwetprocessing phosphate rocks 2023年4月20日 Part of the acid is consumed in the decomposition of the impurities, mainly carbonates, present in the rock [20, 21] REEs, which are found in the structure of apatite [21, 22], dissolve simultaneously with apatite Their Estonian Phosphate Rock Dissolution in Hydrochloric 2023年4月20日 The experiments of dissolution of three different EPR samples in hydrochloric acid were carried out with the aim of studying the impact of the chemical and mineralogical composition of EPR on(PDF) Estonian Phosphate Rock Dissolution in
The hydrochloric acid route for phosphate rock
2007年4月24日 Based on the decomposition processes of phosphate rock by H2SO4, HNO3, HCl, H3PO4, various REEs recovery processes via crystallization, precipitation, solvent extraction and ion exchange2018年3月1日 Hydrochloric acid process (HCl process/route) decomposes phosphate rock with hydrochloric acid and produces a mixture of phosphoric acid and calcium chloride, the main Recovery of rare earth elements from phosphate rock by The present report describes an efficient and economical route for manufacturing phosphoric acid by treating rock phosphate with commercial hydrochloric acid followed by its separation from Phosphoric Acid Manufacturing Through Hydrochloric Acid Route Part of the acid is consumed in the decomposition of the impurities, mainly carbonates, present in the rock [20,21]Estonian Phosphate Rock Dissolution in Hydrochloric Acid:
Treatment of phosphate rocks with hydrochloric acid
2010年7月17日 Solutions containing monocalcium phosphate obtained by leaching phosphate rock using diluted hydrochloric acid were treated for uranium and lanthanides recovery prior to 2021年2月1日 Phosphate rock has been considered as one of the most significant secondary rareearth resource, and the utilization of rare earth elements (REEs) in phosphate rock has attracted increasing attention In this Leaching Kinetics of Rare Earth Elements in Phosphoric 2018年3月1日 Hydrochloric acid process (HCl process/route) decomposes phosphate rock with hydrochloric acid and produces a mixture of phosphoric acid and calcium chloride, the main reaction can be displayed as Eq (28) [198] HCl process decomposes phosphate rock completely and has no specific requirement for phosphate rock [199], [200], [201], [202]Recovery of rare earth elements from phosphate rock by 2024年7月15日 Wang et al [34] used hydrochloric acid decomposition of phosphate ore, lime milk neutralization, and oxalic acid precipitation in a twostep process, obtaining a total rare earth yield of 70–79 % In order to avoid the adulteration of impurity elements, Xie et al [43] used liquid membrane separation technology to separate REEs from 90 % of impuritiesA novel process for the separation and recovery of phosphorus
Treatment of phosphate rocks with hydrochloric acid Springer
nitric acid for treating phosphate has been studied and found to be acceptable route that can yield a highgrade fertilizer with the minimum pollution [6, 7] The use of hydrochloric acid, did not receive much attention [8–11] Solutions containing monocalcium phosphate obtained by leaching phosphate rock using diluted hydrochloric acid were 2019年6月1日 Phosphate rock has been considered as one of the potential promising resources for rare earth elements (REEs) But the cost issues and the technical challenges caused by the low content of REEs in Simultaneous Recovery of Rare Earth Elements and ResearchGate2019年6月1日 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 Simultaneous recovery of rare earth elements and phosphorus 2010年7月17日 The use of hydrochloric acid, did not receive much attention [8–11] Solutions containing monocalcium phosphate obtained by leaching phosphate rock using diluted hydrochloric acid were treated for uranium and lanthanides recovery prior to P 2 O 5 recovery The separation of lanthanides with similar chemical properties is a challenging taskTreatment of phosphate rocks with hydrochloric acid
Waste Treatment and Resource Utilization: Removal and recovery
2023年5月1日 It has been recognized that the nitric acid decomposition of phosphate rock for the production of phosphoric acid is generally feasible and desirable, which has a promising future Because of the limitations of HF generation efficiency, a significant amount of SiO 2 in phosphate rock products is still filtered and separated as nitric acid leaching residues of 2024年1月19日 The kinetics of the dissolution of Estonian phosphate rock and the governing reaction mechanisms in hydrochloric acid in technological processes were investigated The influences of particle size and acid concentrations of 05–15 M on the reaction rate and the pH variation during the process were studied at a dosage of 21 moles of HCl per mole of calcium Kinetics of Estonian Phosphate Rock Dissolution in Hydrochloric Acid 2023年12月16日 Commonly, when one ton of phosphoric acid is produced, 4–6 tons of phosphogypsum will also be generated (Wang et al 2021)Manufacturing equipment using wet process requires less investment and energy than thermal process (Awwad et al 2013), and due to the high cost and corrosiveness of hydrochloric and nitric acids, the sulfuric route remains Prediction and study of the industrial performances of phosphate rock 2007年4月24日 When phosphate rock is leached with hydrochloric acid, radium can be removed by coprecipitation with Ba04Ca06SO4 and uranium by extraction with a 5% solution of tributyl phosphate in hexane or Varsol Phosphoric acid is then separated from calcium chloride solution and other impurities by extraction with undiluted tributyl phosphate The lanthanides can be The hydrochloric acid route for phosphate rock
(PDF) Fundamentals of the WetProcess Phosphoric
1996年11月7日 Phosphoric acid (H 3 PO 4 ), which is the base material for the industrial production of phosphoruscontaining products, is produced from phosphate rock through both wet and dry processes (Al 2019年8月7日 Because of the impossibility of recovering REEs from phosphate by sulfuric acid (the most economical acid and already adopted by the traditional way of decomposition of phosphate rock) , we worked with HCl as a more economical leaching agent compared to Hydrochloric Acid Leaching Study of Rare Earth Elements from hydrochloric acid This is a chemical technological process consuming large amount of energy To assess its exergy efficiency, the exergy method is used The aim of the work is to make exergy analysis of the process of production of precipitate by decomposition of rock phosphate with hydrochloric acid The material, energy and exergy balances ISSN : 0974 7443 chemical technology TSI Journals2022年12月1日 The leaching of rare earth elements (REEs) from Egyptian Abu Tartur phosphate rock using phosphoric acid has been examined and was subsequently optimized to better understand if such an approach could be industrially feasible Preliminary experiments were performed to properly define the design of experiments Afterward, 24 full factorial design was Leaching of rare earths from Abu Tartur (Egypt) phosphate rock
Recovery of rare earth elements from phosphate rock by
2018年3月1日 hydrochloricphosphoric acid solution NP nitrogenphosphorus fertilizer NPK nitrogenphosphoruspotassium fertilizer Keywords Based on the decomposition processes of phosphate rock with H 2 SO 4, HNO 3, HCl, H 3 PO 4, various REEs recovery processes via crystallization, precipitation, solvent extraction and ion exchange optimal acidrock ratio conditions (Table1) The results demonstrate that maximum P2O5 recovery is achieved from an acidrock ratio of 1:12 w/v The decomposition of phosphate rock with hydrochloric acid is an exothermic process, however, it was observed that temperature does not rise to the limit required for the maximum decomposition of rockPhosphoric Acid Manufacturing Through Hydrochloric Acid 2021年11月1日 Brahim et al [22] studied the hydrolysis kinetics of synthetic fluorapatite in hydrochloric acid and obtained the dissolution activation energy of 216 kJ/mol Nie et al [23] used the Mckwan and Ginstling equations to describe the leaching process of Zhijin rare earthcontaining phosphate ore by hydrochloric acidPhosphate ore particles dissolution kinetics in hydrochloric acid Phosphate rocks were leached with hydrochloric acid; and radium was removed by coprecipitation with BaSO4 Uranium and lanthanides were extracted by di(2ethyl hexyl) phosphoric acid and tributyl Composition of the phosphate rock leach solution 10% HCl
Dissolution kinetics of fluorapatite in the hydrochloric acid
2017年3月4日 A thermochemical study of hydrochloric acid attack of synthetic fluorapatite was performed by a DRC The calculated thermogenesis curves show one peak The plot of the heat quantity as a function of the dissolved mass undergoes only one straight segment, and the thermogenesis curves present a single peak, suggesting the occurrence of a onestep 2019年8月7日 Hydrochloric Acid Leaching Study of at least 10% HCl is suggested for the decomposition Although this is the first time that REEs are leached from Abu Tartur phosphate rock with phosphoric (PDF) Hydrochloric Acid Leaching Study of Rare 2017年11月1日 Based on the decomposition processes of phosphate rock by H2SO4, HNO3, HCl, Thereby, in the last years, more attention has been paid to hydrochloric acid treatment, Recovery of Rare Earth Elements from Phosphate Rock by My improned method consists briefly in finely grinding phosphate rock or other phosphates and then subjecting them to the action of hydrochloric acid, thus obtaining a solution containing acid calcium phos phate and calcium chlorid, or possibly a mixture of acid calcium v phosphate, free phosphoric acid and dicalcium chlorid, deUSA Process of making dicalcium phosphate
Separation and recovery of associated rare earths from the Zhijin
2019年4月1日 Hydrochloric acid was used to decompose phosphate rock Defluorination, impurity removal, and multiple enrichment processes enabled the efficient separation and recovery of the phosphoriteassociated rare earths from the acidolysis solution2008年5月15日 However, phosphate rocks decomposition by sulfuric acid remains the most widely used method [29] [30] [21] [32] and over 90% of the phosphoric acid produced worldwide is manufactured by digestion Dissolution of Phosphate Rock by Mixtures of Sulfuric and Phosphoric Acid2016年3月1日 Based on the decomposition processes of phosphate rock by H2SO4, HNO3, HCl, Other technically feasible uses for hydrochloric acid (eg, REE extraction from phosphogypsum, Processing of rare earth phosphate concentrates: AWhen phosphate rock is leached with hydrochloric acid, radium can be removed by coprecipitation with Ba 04 Ca 06 SO 4 and uranium by extraction with a 5% solution of tributyl phosphate in hexane or Varsol Phosphoric acid is then separated from calcium chloride solution and other impurities by extraction with undiluted tributyl phosphateThe hydrochloric acid route for phosphate rock Habashi 1987
Leaching Kinetics of Rare Earth Elements in Phosphoric Acid from
Metals 2021, 11, 239 2 of 17 Various mineral acids, including H2SO4 [9–11], HNO3 [12,13], HCl [9,14], and H3PO4 [13,15,16], are used in the decomposition process of phosphate rock to recover phos phorous and REEs In the H2SO4 leaching process, 75% of REEs are lost in phosphogypsum, whereas more than 80% of REEs can be leached in HNO3 and HCl 2020年10月15日 The hydrochloric acid route was firstly proposed by the Israeli Mining Industrials (IMI) [5], [6] The schematic diagram of the IMI hydrochloric acid route is shown in Fig 1(a) The process includes the decomposition of phosphate rock with HCl, solvent extraction of H 3 PO 4 and the purification of H 3 PO 4 by posttreatmentSeparation of H3PO4 from HClwetprocessing phosphate rocks 2005年12月1日 9 Guo et al 10 studied ultrasoundenhanced decomposition of phosphate rock in a sulfuric acid medium and found that ultrasonic vibrations could improve the degree of suspension of mineral Selective leaching kinetics and upgrading of lowgrade calcareous 2013年1月1日 The dissolution kinetics of the AbuTartur phosphate rock using dilute hydrochloric acid has been investigated The influence of acid concentration, liquid/solid ratio, particle size and (PDF) Dissolution kinetics of Western Desert
[PDF] Phosphate Rock Treatment with Hydrochloric Acid for
The present paper deals with the treatment of phosphate obtained from a commercial sample of Akashat phosphate ore in hydrochloric acid The factors studied are effects of the temperature of dissolution, acid concentration, and the time required for mixing phases The experiments were performed with 100 kg/m 3 of solid/liquid ratio, the size of the particles ranged 125140 µm, 2019年6月1日 For REEs recovery from leaching solutions originated from phosphate rock by acid decomposition, methods such as precipitation, crystallization, solvent extraction, ion exchange have been hydrochloric, nitric and phosphoric acids and deportment of minor/major elements Hydrometallurgy (2016) LS Wang et al Recovery of rare Simultaneous recovery of rare earth elements and phosphorus Allotropes of Phosphorus Phosphorus is a nonmetal, solid at room temperature, and a poor conductor of heat and electricity Phosphorus occurs in at least 10 allotropic forms, the most common (and reactive) of which is socalled white (or yellow) phosphorus, which looks like a 189: The Chemistry of Phosphorus Chemistry LibreTextsHydrochloric acid, also known as muriatic acid or spirits of salt, is an aqueous solution of hydrogen chloride (HCl) It is a colorless solution with a distinctive pungent smell It is classified as a strong acidIt is a component of the gastric acid in the digestive systems of most animal species, including humans Hydrochloric acid is an important laboratory reagent and industrial chemicalHydrochloric acid Wikipedia
Rates of Reaction Save My Exams
The picture shows a lump of phosphate rock Rob Lavinsky, iRocks – CCBYSA30 [CCBYSA30], via Wikimedia Commons Phosphoric acid is made by adding sulfuric acid to phosphate rock (a) The rate of reaction between sulfuric acid and phosphate rock can be increased if the mixture is heated to a higher temperatureKeywords Phosphate rock Hydrochloric acid Lanthanides Radium and fluorine due to the decomposition of carbonates The slurry was then filtered to remove the insoluble gangue minerals,Treatment of phosphate rocks with hydrochloric acidBeing reflected in the decomposer (1) of Rock Phosphate (72Min BPL) and hydrochloric acid carried outFull mistake 40 orders of ore grain size, hydrochloric acid should directly be added in (1) as starting acid, and as long as the acidity of hydrochloric acid and total amount all can obtain satisfied P enough 2 O 5 Rate of decomposition, in general, be swift in response and carry out CNB Method for preparing calcium Google Patents2018年5月26日 Ecophos sa has developed a unique modular process for the valorization of lowgrade phosphate rock and/or various alternative P resources such as sewage sludge ash on the basis of soft digestion by hydrochloric acid or phosphoric acid The process is extremelyThe Ecophos Process: Highest Quality Market Products Out of
(PDF) Fundamentals of the wetprocess phosphoric acid production 1
1 Kinetics and Mechanism of the Phosphate Rock Dissolution Sergey V Dorozhkin†,‡ Research Institute of Fertilizers and Insectofungicides, Moscow, Russia This paper is devoted to the fundamentals of natural phosphate rock dissolution under conditions close to those in the industry of the wetprocess phosphoric acid production