Mechanical activation of the phosphate rock

2009-8-9  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

Mechanical activation of phosphate concentrates to

2021-7-9  2.2. 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

The Effects of the Phosphates’ Mechanical Activation

2015-11-12  Such a heterogenic composition of the useful phosphoric part of the ore gave a variety of the results during the leaching. For the first time, the experiments of phosphate (apatite) mechanochemical activation from Lisina ore deposit were performed in order to improve its reactivity.

Mechanical activation and reactivity of phosphate raw

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.

Mechanical activation of phosphate concentrates to

The results obtained suggested mechanical activation as an appropriate pre-treatment method for dissolution of REEs from phosphate concentrates containing refractory REE minerals at a lower cost and a higher recovery rate. Keywords. Esfordi Phosphate Concentrate; Rare Earth Elements; Mechanical Activation; Leaching; Main Subjects. Mineral Processing

Mechanical Activation of Tetracalcium Phosphate.

2009-8-18  genstokite (tetracalcium phosphate, TTC") resulted in a de- crease in both particle and crystallite size, leading to a mechanical activation of the compound. This mechanically activated material demonstrated a high reactivity such that, in contrast to highly crystalline ITCP, a setting reaction with water to nanocrystalline hydroxyapatite (HA) and

Mechanical Activation of Tetracalcium Phosphate

2008-7-7  Mechanical Activation of Tetracalcium Phosphate Uwe Gbureck,Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, D-97070 Würzburg, Germany

Mechanical activation and cement formation of

2017-12-27  Mechanical activation and cement formation of trimagnesium phosphate Theresa Brückner,Department for Functional Materials in Medicine and Dentistry, University of

A Fed-Batch Strategy Integrated with Mechanical

2019-7-31  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 solubilization.

EFFECT OF INTENSIVE MECHANICAL STRESSES ON

2009-8-9  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

Mechanical activation of phosphate concentrates to

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.

Mechanical Activation of Tetracalcium Phosphate.

2009-8-18  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-

Mechanical Activation of Tetracalcium Phosphate

2008-7-7  Mechanical Activation of Tetracalcium Phosphate Uwe Gbureck,Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, D-97070 Würzburg, Germany

Mechanical Activation of Tetracalcium Phosphate

OAI identifier: oai:pure.atira.dk:openaire_cris_publications/7b1f4bb4-f58c-4812-9e1b-c8c6b8e05a6a

EFFECT OF INTENSIVE MECHANICAL STRESSES ON

2009-8-9  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

A Fed-Batch Strategy Integrated with Mechanical

2019-7-31  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

[PDF] To what extent do soft mechanical activation

In order to obtain effective mineral fertilizer, different mixtures of phosphate rock (PR) with natural clinoptilolite (Cp) and NH4 saturated clinoptilolite (NH4-Cp) were subjected to soft mechanical activation. Mean concentrations of P released from mechanically activated (MA) substrates, MACp/PR and MANH4-Cp/PR, ranged between 2.81-3.19 mg L and 2.02-7.74 mg L, respectively.

Fed-Batch Strategy Integrated with Mechanical

"Fed-Batch Strategy Integrated with Mechanical Activation Improves the Solubilization of Phosphate Rock by Aspergillus niger"

Molecular Mechanisms of Phosphate Stress Activation

2020-3-18  The hierarchical quorum sensing (QS) systems of Pseudomonas aeruginosa, consisting of las, pqs, and rhl, coordinate the expression of bacterial virulence genes. Previous studies showed that under phosphate deficiency conditions, two-component regulatory system PhoRB could activate various genes involved in cytotoxicity through modulation of QS systems, but the mechanism by which

TO WHAT EXTENT DO SOFT MECHANICAL SS

2019-1-3  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

Effect of mechanical activation on characteristics of

2013-5-23  Read "Effect of mechanical activation on characteristics of electrodes based on lithium-iron phosphate, Russian Journal of Applied Chemistry" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

EFFECT OF INTENSIVE MECHANICAL STRESSES ON

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.

Fed-Batch Strategy Integrated with Mechanical

"Fed-Batch Strategy Integrated with Mechanical Activation Improves the Solubilization of Phosphate Rock by Aspergillus niger"

Molecular Mechanisms of Phosphate Stress Activation

2020-3-18  The hierarchical quorum sensing (QS) systems of Pseudomonas aeruginosa, consisting of las, pqs, and rhl, coordinate the expression of bacterial virulence genes. Previous studies showed that under phosphate deficiency conditions, two-component regulatory system PhoRB could activate various genes involved in cytotoxicity through modulation of QS systems, but the mechanism by which

Sugar phosphate activation of the stress sensor eIF2B

2021-6-1  Sugar phosphate activation of the stress sensor eIF2B. United States: N. p., 2021. As a form of mechanical signal, the multidirectional orbital fluid shear stress transmits anabolic signal to bone forming cells in promoting cell differentiation, metabolism and proliferation. Signals are channeled through the cytoskeleton framework, directly

TO WHAT EXTENT DO SOFT MECHANICAL SS

2019-1-3  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 property and structural evolution of alkali

2020-2-27  The present work studies consolidation of phosphate mine tailings through alkaline activation process with the addition of slag for adjusting the gel structure. As increasing slag contents in the raw materials, more (Na,K)2O-CaO-Al2O3-SiO2-H2O (C-A-S-H) and (Na,K)2O-Al2O3-SiO2-H2O (N-A-S-H) gels were formed in the mine tailings-based mortars.

Mechanical stress activates angiotensin II type 1

2004-5-16  Activation of ERKs by mechanical stretch was weaker in the AT1-i2m-transfected and inositol phosphate accumulation was estimated by determining the ratio of inositol phosphate

Chemical and mechanical stimuli act on common

2016-11-22  Cells directionally migrate in response to a variety of external cues, including chemical, electrical, and mechanical stimuli; however, only response to chemoattractants has been characterized at the molecular level. Binding of chemoattractants to specific surface receptors triggers rapid, transient activation

Mechanical force-driven TNFα endocytosis governs

2021-1-1  Mechanical stimuli, including physical cues from the matrix and applied forces, represent another critical extrinsic factor that controls MSC fate, particularly in bone, where the response to