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Improvement in the permeability of sintering beds by drying treatment after granulating sinter raw materials containing concentrates. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.06.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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2
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Yu M, Omar C, Weidemann M, Schmidt A, Litster JD, Salman AD. Roller compaction: Infrared thermography as a PAT for monitoring powder flow from feeding to compaction zone. Int J Pharm 2020; 578:119114. [PMID: 32035257 DOI: 10.1016/j.ijpharm.2020.119114] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 01/22/2020] [Accepted: 01/31/2020] [Indexed: 11/18/2022]
Abstract
Roller compaction is a continuous dry granulation process, in which powder is compressed by two counter-rotating rollers. During this process, the powder feeding to the compaction zone has a significant effect on product quality. This work investigates the flow of powder from the feeding zone to the compaction zone using online infrared thermography as Process Analytical Technology (PAT) which is achieved via a specially built cheek plate (side-sealing). The powder undergoes increasing stress from the rollers when it is approaching the minimum gap of the compaction zone, which can be indirectly monitored by measuring the powder temperature. The online monitoring of the powder flow during the roller compaction helps locate the nip region and identify the effect of different roller forces on the temperature of the feeding powder. The results show that the nip region can be identified by analysing the temperature profiles from the feeding to the compaction zone. The increase of roller force results in an increasing slope of the powder temperature profile. In addition, offline X-ray CT measurement results show the increase of density along the feeding to the compaction direction, which is compared with Johanson theory under different roller forces in the roller compaction process.
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Affiliation(s)
- Mingzhe Yu
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom.
| | - Chalak Omar
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - Marcus Weidemann
- Alexanderwerk AG, Remscheid, North Rhine-Westphalia 42857, Germany
| | | | - James D Litster
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - Agba D Salman
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom.
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3
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Li C, Honeyands T, O'Dea D, Moreno-Atanasio R. DEM study on size segregation and voidage distribution in green bed formed on iron ore sinter strand. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.09.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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Simulation of the pressure drop across granulated mixtures using a coupled DEM – CFD model. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2018.10.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Evaluation of compressive strength and shear strength of the adhering layer of granules in iron ore sintering. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.07.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Yu M, Omar C, Schmidt A, Litster JD, Salman AD. Improving feeding powder distribution to the compaction zone in the roller compaction. Eur J Pharm Biopharm 2018; 128:57-68. [PMID: 29678732 DOI: 10.1016/j.ejpb.2018.04.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Revised: 04/15/2018] [Accepted: 04/16/2018] [Indexed: 11/18/2022]
Abstract
In the roller compaction process, powder flow properties have a significant influence on the uniformity of the ribbon properties. The objective of this work was to improve the powder flow in the feeding zone by developing novel feeding guiders which are located in the feeding zone close to the rollers in the roller compactor (side sealing system). Three novel feeding guiders were designed by 3D printing and used in the roller compactor, aiming to control the amount of powder passing across the roller width. The new feeding guiders were used to guide more powder to the sides between the rollers and less powder to the centre comparing to the original feeding elements. Temperature profile and porosity across the ribbon width indicated the uniformity of the ribbon properties. Using the novel feeding guiders resulted in producing ribbons with uniform temperature profile and porosity distribution across the ribbon width. The design of the feeding guiders contributed to improving the tensile strength of the ribbons produced from the compaction stage as well as reducing the fines produced from the crushing stage.
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Affiliation(s)
- Mingzhe Yu
- Department of Chemical and Biological Engineering, University of Sheffield, Newcastle Street, Sheffield S1 3JD, United Kingdom.
| | - Chalak Omar
- Department of Chemical and Biological Engineering, University of Sheffield, Newcastle Street, Sheffield S1 3JD, United Kingdom
| | | | - James D Litster
- Department of Chemical and Biological Engineering, University of Sheffield, Newcastle Street, Sheffield S1 3JD, United Kingdom
| | - Agba D Salman
- Department of Chemical and Biological Engineering, University of Sheffield, Newcastle Street, Sheffield S1 3JD, United Kingdom.
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7
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Jin Y, Lu H, Guo X, Gong X. Effect of water addition on flow properties of lignite particles. Chem Eng Res Des 2018. [DOI: 10.1016/j.cherd.2017.11.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Li C, Honeyands T, O'Dea D, Moreno-Atanasio R. The angle of repose and size segregation of iron ore granules: DEM analysis and experimental investigation. POWDER TECHNOL 2017. [DOI: 10.1016/j.powtec.2017.07.045] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Affiliation(s)
- Y. Liu
- Dept. of Chemical Engineering; MMRI/ CAPPA-D, McMaster University; Hamilton Ontario Canada L8S 4L7
| | - M. R. Thompson
- Dept. of Chemical Engineering; MMRI/ CAPPA-D, McMaster University; Hamilton Ontario Canada L8S 4L7
| | - K. P. O'Donnell
- Dow food, Pharma & Medical; Larkin Laboratory, The Dow Chemical Company; Midland MI 48674
| | - S. Ali
- Pharma Solutions; BASF Corporation; 100 Park Avenue, Florham Park NJ 07932
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10
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Liu Y, Thompson M, O'Donnell K, Grasman N. Effect of temperature on the wetting behavior of hydroxypropyl methylcellulose in a twin-screw granulator. POWDER TECHNOL 2016. [DOI: 10.1016/j.powtec.2016.08.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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11
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Representing spray zone with cross flow as a well-mixed compartment in a high shear granulator. POWDER TECHNOL 2016. [DOI: 10.1016/j.powtec.2016.04.053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Function of upstream and downstream conveying elements in wet granulation processes within a twin screw extruder. POWDER TECHNOL 2015. [DOI: 10.1016/j.powtec.2015.07.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Examining drug hydrophobicity in continuous wet granulation within a twin screw extruder. Int J Pharm 2015; 496:3-11. [PMID: 26232701 DOI: 10.1016/j.ijpharm.2015.07.070] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Revised: 07/24/2015] [Accepted: 07/27/2015] [Indexed: 11/23/2022]
Abstract
The influence of active pharmaceutical ingredient (API) hydrophobicity on continuous wet granulation was studied in twin screw granulation utilizing foamed binder delivery. The APIs examined were caffeine, acetaminophen, ibuprofen and griseofulvin and the drug load was maintained constant at 15 wt%. In order to understand the impact of these APIs on the granulation process, API and binder distribution, particle size, porosity, and fracture strength were analyzed on samples collected along the screw length. It was found that the API and binder distributions were uniform along the screws regardless of the hydrophobicity of the formulation, in contrast to literature results with liquid injection. The absence of de-mixing of the hydrophobic ingredient was hypothesized to be a result of the high spread-to-soak ratio of a foamed binder that 'cages' those particles within the mass of local hydrophilic solids.
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Zhang P, Cai J, Dong H, Cao Z, Yang Y. Measurement of Voidage of Sinter Ores in the Tubes. Ind Eng Chem Res 2012. [DOI: 10.1021/ie300801e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Penggang Zhang
- State Environmental Protection Key
Laboratory of Eco-Industry,
Institute of Thermal and Environmental Engineering, School of Materials
and Metallurgy, Northeastern University, Shenyang, 110819, PR China
| | - Jiuju Cai
- State Environmental Protection Key
Laboratory of Eco-Industry,
Institute of Thermal and Environmental Engineering, School of Materials
and Metallurgy, Northeastern University, Shenyang, 110819, PR China
| | - Hui Dong
- State Environmental Protection Key
Laboratory of Eco-Industry,
Institute of Thermal and Environmental Engineering, School of Materials
and Metallurgy, Northeastern University, Shenyang, 110819, PR China
| | - Zheng Cao
- State Environmental Protection Key
Laboratory of Eco-Industry,
Institute of Thermal and Environmental Engineering, School of Materials
and Metallurgy, Northeastern University, Shenyang, 110819, PR China
| | - Yiwei Yang
- State Environmental Protection Key
Laboratory of Eco-Industry,
Institute of Thermal and Environmental Engineering, School of Materials
and Metallurgy, Northeastern University, Shenyang, 110819, PR China
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Zou RP, Feng CL, Xu JQ, Yu AB. Prediction of the Porosity of Multicomponent Mixtures of Wet Coarse Spheres. Ind Eng Chem Res 2005. [DOI: 10.1021/ie050533m] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- R. P. Zou
- Center for Simulation and Modeling of Particulate Systems, School of Materials Science and Engineering, The University of New South Wales, Sydney NSW 2052, Australia
| | - C. L. Feng
- Center for Simulation and Modeling of Particulate Systems, School of Materials Science and Engineering, The University of New South Wales, Sydney NSW 2052, Australia
| | - J. Q. Xu
- Center for Simulation and Modeling of Particulate Systems, School of Materials Science and Engineering, The University of New South Wales, Sydney NSW 2052, Australia
| | - A. B. Yu
- Center for Simulation and Modeling of Particulate Systems, School of Materials Science and Engineering, The University of New South Wales, Sydney NSW 2052, Australia
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18
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Feng CL, Yu AB. Quantification of the Relationship between Porosity and Interparticle Forces for the Packing of Wet Uniform Spheres. J Colloid Interface Sci 2000; 231:136-142. [PMID: 11082257 DOI: 10.1006/jcis.2000.7103] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This paper presents an attempt to quantify the relationship between porosity and interparticle forces. In particular, it concerns the packing of wet mono-sized spheres where capillary force is dominant. The interrelationships between capillary force, porosity, and liquid content are first analyzed based on well-established theories and experimental observations. The resultant data are then used to correlate porosity with the force ratio defined as the average capillary force to the gravity of a particle. Application of this correlation is finally demonstrated by examples of porosity prediction. Copyright 2000 Academic Press.
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Affiliation(s)
- CL Feng
- School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
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20
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Iveson S, Litster J, Ennis B. Fundamental studies of granule consolidation Part 1: Effects of binder content and binder viscosity. POWDER TECHNOL 1996. [DOI: 10.1016/0032-5910(96)03096-3] [Citation(s) in RCA: 159] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Hinkley J, Waters A, Litster J. An investigation of pre-ignition air flow in ferrous sintering. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/0301-7516(94)90019-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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