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mechanical activation phosphate

2018-02-14T12:02:09+00:00
  • Mechanical Activation of Tetracalcium Phosphate - Gbureck ...

    It was found that prolonged high‐energy ball‐milling of Hilgenstokite (tetracalcium phosphate, TTCP) resulted in a decrease in both particle and crystallite size, leading to a mechanical activation

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  • Calcium phosphate powders synthesized from CaCO3 and CaO ...

    Solid-state reaction and mechanical activation between the CaCO 3 and CaO from calcined golden apple snail shells and dibasic calcium phosphate dihydrate (CaHPO 4 •2H 2 O, DCPD) were performed to develop calcium phosphate powders. The effects of the milling media used on the mechanical activation were examined. A solid-state reaction of manually mixed CaCO

  • Author: Teerawat Laonapakul, Ratchawoot Sutthi, Patamaporn Chaikool, Sukangkana Talangkun, Apichat Boonma, P...
  • Mechanical activation and cement formation of trimagnesium ...

    Mechanical activation and cement formation of trimagnesium phosphate. Theresa Brückner. Department for Functional Materials in Medicine and Dentistry, University of Wuerzburg, Wuerzburg, Germany . Search for more papers by this author. Katrin Hurle. GeoZentrum Nordbayern, Mineralogy, Friedrich‐Alexander University Erlangen‐Nuremberg, Erlangen, Germany. Search for more papers by

  • Cited by: 2
  • Mechanical activation of the phosphate rock - MAFIADOC.COM

    Phosphate is a one of the plant nutrients that can be produced from phosphate rock. However, direct usage of the phosphate rock has several limitations. In this study, the mechanical activation was used to modify the phosphate structure to be suitable for direct use as a natural fertilizer. It seems a better alternative for the highly ...

  • Mechanical activation of the phosphate rock - MAFIADOC.COM

    In this study, Red Sea phosphate ore was subjected to the mechanical activation treatment with and without the beneficiation. Various products before and after activation were compared in terms of solubility and the process economy. The results showed that the mechanical activation is economically preferable. key words: mechanical activation, crystal lattice imperfection, phosphate fertilizer ...

  • Mechanical activation of the phosphate rock

    mechanical activation treatment with and without the beneficiation. Various products before and after activation were compared in terms of solubility and the process economy. The results showed that the mechanical activation is economically preferable. key words: mechanical activation, crystal lattice imperfection, phosphate fertilizer, surface reactivity . INTRODUCTION . Mineral fertilizers ...

  • Enhanced Phosphorus Release from Phosphate Rock Activated ...

    Phosphorus (P) is one of the most important nutrients for increasing crop yield; the increase in effective P ratio directly from raw phosphate rock (PR) powder by mechanical grinding to increase its microcrystallinity is believed to be the best choice for this purpose. This study reports the improvement in the activation property of PR powder with different lignite ratios (1%, 2%, 3%, and 5% ...

  • Author: Xian-mei Zhang, Yi Li, Cheng Hu, Zhen-quan He, Ming-xing Wen, Guo-sheng Gai, Zhao-hui Huang, Yu-fen ...
  • Mechanical Activation Reinforced Porous Calcium Phosphate ...

    Calcium phosphate cement (CPC) powder was activated by ball milling to improve the mechanical properties of porous CPC scaffolds. The mechanical activation mechanism was investigated by specific surface analyses, X-ray diffraction (XRD) and scanning electron microscopy (SEM). After ball milling, the average particle sizes of BCPC powder decreased while the specific surface area, apparent ...

  • Mechanical Activation of Tetracalcium Phosphate.

    Mechanical Activation of Tetracalcium Phosphate Uwe Gbureck,t Jake E. Barralet Michael Hofmann, t and Roger Thull$ Department for Functional Materials in Medicine and Dentistry, University of Würzburg, It was found that prolonged high-energy ball-milling of Hil- genstokite (tetracalcium phosphate, TTC") resulted in a de- crease in both particle and crystallite size, leading to a mechanical ...

  • Mechanical activation of phosphate concentrates to enhance ...

    Mechanical activation The phosphate concentrate samples were mechanically activated by a planetary ball mill (Pulverisette 6, FRITSCH, Germany) at 500 rpm in the dry mode, and in an argon atmosphere to prohibit any possible reaction. Stainless steel balls (diameters of 9.4 and 20 mm) and a steel pot were used for milling with a mass ratio of 20:1 (balls to powder ratio). After mechanical ...

  • Author: H. Shadi Naghadeh, M. Abdollahy, A. Khodadadi Darban, P. Pourghahramani
  • Mechanical activation and cement formation of β-tricalcium ...

    01/10/2003  The mechanical activation of β-TCP led to materials that could be used to form a cement with setting and mechanical properties demanded in clinical use. The setting times with 2.5% Na 2 HPO 4 -solution as liquid phase are in the range between 5 and 16 min and might be adjustable by varying the sodium phosphate content of the liquid.

  • Mechanical Activation of Tetracalcium Phosphate.

    Mechanical Activation of Tetracalcium Phosphate Uwe Gbureck,t Jake E. Barralet Michael Hofmann, t and Roger Thull$ Department for Functional Materials in Medicine and Dentistry, University of Würzburg, It was found that prolonged high-energy ball-milling of Hil- genstokite (tetracalcium phosphate, TTC") resulted in a de- crease in both particle and crystallite size, leading to a mechanical ...

  • Mechanical activation of phosphate concentrates to enhance ...

    The Esfordi phosphate concentrate mainly contains fluorapatite, monazite, and xenotime as rare earth element (REE) minerals, accounting for 1.5% of rare earth metals. The monazite and xenotime minerals are refractory and their decomposition is only possible at high temperatures. Thus mechanical activation was used in the present work for this purpose.

  • Enhanced Phosphorus Release from Phosphate Rock Activated ...

    Phosphorus (P) is one of the most important nutrients for increasing crop yield; the increase in effective P ratio directly from raw phosphate rock (PR) powder by mechanical grinding to increase its microcrystallinity is believed to be the best choice for this purpose. This study reports the improvement in the activation property of PR powder with different lignite ratios (1%, 2%, 3%, and 5% ...

  • Mechanical Activation Reinforced Porous Calcium Phosphate ...

    Calcium phosphate cement (CPC) powder was activated by ball milling to improve the mechanical properties of porous CPC scaffolds. The mechanical activation mechanism was investigated by specific surface analyses, X-ray diffraction (XRD) and scanning electron microscopy (SEM). After ball milling, the average particle sizes of BCPC powder decreased while the specific surface area, apparent ...

  • mechanical activation phosphate - Straffe Artist

    Mechanical activation and cement formation of β tricalcium . And the application of ACP made by mechanical transformation for cement formation has not been previously reported The aim of this work was to investigate the physical and chemical behaviour of a new apatite cement system made from mechanically activated β tricalcium phosphate (MAβT)

  • Mechanical activation and reactivity of phosphate raw ...

    16/10/2012  Effect of mechanical activation of phosphate raw materials on the main characteristics of their subsequent decomposition with an aqueous solution of a weak acid and a complexing agent was studied. It was shown that, not being a versatile procedure, mechanical activation is rather efficient for well crystallized fluoroapatites, whereas for “soft” phosphorites its application is inappropriate.

  • Ceramics Based on a Powder Mixture of Calcium ...

    Sodium pyrophosphate Na4P2O7 formed from sodium hydrogen phosphate Na2HPO4 as a result of thermal conversion had a significant effect on sintering mechanism and the microstructure of the ceramics. A ceramics with a low sintering temperature based on β-calcium pyrophosphate β-Ca2P2O7 was obtained for the first time from a powder system, upon preparation of which under mechanical activation ...

  • BIODECOMPOSITION OF JORDAN PHOSPHORITE BY PHOSPHATE ...

    The preliminary mechanical activation of the phosphate facilitates the dissolution until a definite period of the bioconversion. Investigations with mechanically-activated Jordan phosphorite showed that a maximum extent of 92.40% of phosphate solubilization was observed on the 10-th day at a phosphorite concentration of 0.5% w/v.

  • Economic preferences of mechanical activation over mineral ...

    In this study, Red Sea phosphate ore was subjected to the mechanical activation treatment with and without the beneficiation. Various products before and after activation were compared in terms of solubility and the process economy. The results showed that the mechanical activation is economically preferable. Bezpośrednie zastosowanie rudy fosforanowej wydaje się być lepszą alternatywą ...

  • (PDF) Economic preferences of mechanical activation over ...

    Mechanical activation of phosphate in hi ghly intensive size reduction equipment, such as modified vibrating mill should result on an increase in degree of dispersion of the . S. S. Ibrahim, A. A ...

  • mechanical activation phosphate - Straffe Artist

    Mechanical activation and cement formation of β tricalcium . And the application of ACP made by mechanical transformation for cement formation has not been previously reported The aim of this work was to investigate the physical and chemical behaviour of a new apatite cement system made from mechanically activated β tricalcium phosphate (MAβT)

  • Mechanical activation and reactivity of phosphate raw ...

    16/10/2012  Effect of mechanical activation of phosphate raw materials on the main characteristics of their subsequent decomposition with an aqueous solution of a weak acid and a complexing agent was studied. It was shown that, not being a versatile procedure, mechanical activation is rather efficient for well crystallized fluoroapatites, whereas for “soft” phosphorites its application is inappropriate.

  • The effect of mechanical activation on the thermal ...

    The effect of mechanical activation on the structure and thermal reactions of Limestonees has been studied on the example of Na–Al–Fe phosphate Limestonees. These Limestonees are used in nuclear technology for immobilization of radioactive waste. The Limestonees were activated by grinding in a planetary mill. Mechanical activation causes a decrease of the T g temperature as well as of the Limestone ...

  • Economic preferences of mechanical activation over mineral ...

    In this study, Red Sea phosphate ore was subjected to the mechanical activation treatment with and without the beneficiation. Various products before and after activation were compared in terms of solubility and the process economy. The results showed that the mechanical activation is economically preferable. Bezpośrednie zastosowanie rudy fosforanowej wydaje się być lepszą alternatywą ...

  • EFFECT OF INTENSIVE MECHANICAL STRESSES ON PHOSPHATE ...

    Mechanical activation technique represents a unique process in which the mineral surface reactivity can be increased in addition to having new products. Phosphate is a one of the plant nutrients that can be produced from phosphate rock. However, direct usage of the phosphate rock has several limitations. In this study, the mechanical activation was used to modify the phosphate structure to be ...

  • A Fed-Batch Strategy Integrated with Mechanical Activation ...

    Here, we propose a fed-batch strategy coupled with mechanical activation to improve the biological solubilization of PR by Aspergillus niger. An initial systematic study of the effect of the particle size of Itafós phosphate rock (IPR), a low reactivity phosphate mineral (P2O5, 20%), on the biological solubilization of phosphorus revealed that the particle size played a key role in IPR ...

  • Mechanical Activation on Phosphogypsum: Hydrosodalite ...

    Mechanical activation was carried out in a ball mill. Two types of samples were formed: one type with non-milled mixtures and the second type with milled mixtures. The additive of 0, 3, 5, and 10% of hydrosodalite was chosen. This paper describes the process of adsorbing of hazardous phosphate impurities by hydrosodalite. The compressive strength of phosphogypsum specimens with

  • TO WHAT EXTENT DO SOFT MECHANICAL SS PARAMETERS

    Keywords: exchange-fertilizer mixtures, phosphate rock, clinoptilolite, mechanical activation, multivariate analysis. Correct use of fertilizers and natural resources contributes to environmental sustainability. Inorganic fertilizers account for about 80% of all phosphate applications, of which more than 99% originate from

  • Mechanical stress-induced mast cell degranulation ...

    These data suggest that mast cells are sensitive to mechanical stress in fibrotic lungs and mechanical stretch-induced mast cell degranulation also induces TGF-β1 activation. Therefore, mechanical stiffness is a crucial factor for mast cell activation, and mast cells may play an important role to form a vicious cycle for fibrosis persistence and/or progression. Although we have previously ...

  • A Fed-Batch Strategy Integrated with Mechanical Activation ...

    Here, we propose a fed-batch strategy coupled with mechanical activation to improve the biological solubilization of PR by Aspergillus niger. An initial systematic study of the effect of the particle size of Itafós phosphate rock (IPR), a low reactivity phosphate mineral (P2O5, 20%), on the biological solubilization of phosphorus revealed that the particle size played a key role in IPR ...

  • The effect of mechanical activation on the thermal ...

    The effect of mechanical activation on the structure and thermal reactions of Limestonees has been studied on the example of Na–Al–Fe phosphate Limestonees. These Limestonees are used in nuclear technology for immobilization of radioactive waste. The Limestonees were activated by grinding in a planetary mill. Mechanical activation causes a decrease of the T g temperature as well as of the Limestone ...

  • Mechanical Activation on Phosphogypsum: Hydrosodalite ...

    Mechanical activation was carried out in a ball mill. Two types of samples were formed: one type with non-milled mixtures and the second type with milled mixtures. The additive of 0, 3, 5, and 10% of hydrosodalite was chosen. This paper describes the process of adsorbing of hazardous phosphate impurities by hydrosodalite. The compressive strength of phosphogypsum specimens with

  • Mechanical stress-induced mast cell degranulation ...

    These data suggest that mast cells are sensitive to mechanical stress in fibrotic lungs and mechanical stretch-induced mast cell degranulation also induces TGF-β1 activation. Therefore, mechanical stiffness is a crucial factor for mast cell activation, and mast cells may play an important role to form a vicious cycle for fibrosis persistence and/or progression. Although we have previously ...

  • TO WHAT EXTENT DO SOFT MECHANICAL SS PARAMETERS

    Keywords: exchange-fertilizer mixtures, phosphate rock, clinoptilolite, mechanical activation, multivariate analysis. Correct use of fertilizers and natural resources contributes to environmental sustainability. Inorganic fertilizers account for about 80% of all phosphate applications, of which more than 99% originate from

  • Mechanical equipment for crushing phosphate rock dolomite

    Mechanical activation of the phosphate rock. key words: mechanical activation ... Get price. dolomite crushing include crusher dolomite types - perkinspreschool. Dolomite production equipment mainly used mechanical crushing, include crusher, sand making machine and milling machine, the mo. Contact Us. Dolomite . Dolomite is an anhydrous carbonate mineral composed of calcium magnesium ...

  • مقاله Mechanical activation of phosphate concentrates to ...

    Mechanical activation of phosphate concentrates to enhance dissolution efficiency of rare earth elements from a kinetic viewpoint. اعتبار موردنیاز : ۱ تعداد صفحات: ۱۶ تعداد نمایش خلاصه: ۷۱ نظرات: ۰. سال انتشار: ۱۳۹۸. محل انتشار: مجله معدن و محیط زیست، دوره: 10، شماره: 2. کد COI ...

  • Materials Free Full-Text Manganese Phosphatizing ...

    The mechanical properties of the manganese phosphate coating were compared to those of zinc phosphate [47,48]. It was observed that zinc phosphate has a lower shear strength and wear resistance compared to manganese phosphate coating. On the basis of the available literature, it could be stated that there is a lack of data regarding a modified manganese phosphating process and the effect of Ba ...

  • Propofol Limits Microglial Activation after Experimental ...

    Microglial activation is implicated in delayed tissue damage after traumatic brain injury (TBI). Activation of microglia causes up-regulation of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase, with the release of reactive oxygen species and cytotoxicity. Propofol appears to

  • Magnesium Phosphate Cement Systems for Hard Tissue ...

    13/05/2016  Mechanical activation and cement formation of trimagnesium phosphate. Journal of the American Ceramic Society 2018 , 101 (5) , 1830-1834. DOI: 10.1111/jace.15397.

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