Particle technologyFrom Wikipedia, the free encyclopedia

Particle technology is that branch of science and engineering dealing with the production, handling,

modification, and use of a wide variety of particulate materials, both wet or dry, in sizes ranging from

nanometers to centimeters; its scope spans a range of industries to include chemical, petrochemical,

agricultural, food, pharmaceuticals, mineral processing, advanced materials, energy, and the

environment.

This definition is given (essentially) by the Particle Technology Forum,[1] an international and

interdisciplinary forum, but also a division of the American Institute of Chemical Engineers, and as

such is included in their list under the title of AIChE’s Technical Divisions and Forums.

Subjects of particle technology[edit]

Particle technology thus deals with bulk storage, crushing and grinding, particle size separation,

such as sieving, tabling, flotation, qualitative separation such asmagnetic separation,

and/or electrostatic precipitation, fluidization, flocculation, Centrifugal separation, Liquid

filtration, particle size analysis, powder metallurgy,nanotechnology, particle characterization by

shape, and others.

Education in particle technology[edit]

Because according to the definition of particle technology it is a branch of chemical engineering,

numerous universities with chemical engineering departments give courses in particle technology

such as Sheffield University. The instruction includes both theory and laboratory practice. Particular

subjects in this scientific/engineering discipline are also discussed during periodic symposia. Such a

symposium is The Particle Technology Forum. The 8th UK Particle Technology Forum 2007 was

held on 26–27 September 2007 at Robinson College, Cambridge, UK.

The Internet book entitled Fundamentals of Particle Technology on the World-Wide Web Virtual

Library of the University of Florida Engineering Research Center (ERC) Particle Size and

Technology (PS&T) group [2] consists of the following downloadable chapters for private study.

Chap Title pp

Sponsors' page 128

Title page 11

Copyright declaration and publisher information 11

Preface 28

Contents 27

1 Introduction 89

2 Particle characterisation 770

3 Fluid flow through porous media 167

4 Liquid filtration 784

5 Dilute systems 218

6 Hindered systems and rheology 479

7 Fluidisation 332

8 Centrifugal separation 357

9 Conveying 166

10 Powder flow and storage 363

11 Crushing and classification 260

12 Solid/solid mixing 1320

13 Colloids and agglomeration 270

14 Gas cleaning 335

15 Powder hazards 160

16 Case study 110

Nomenclature 51

Further Reading 32

Heywood Tables 42

Index

Particle characterization[edit]

Particles are characterized by different methods. One of the many methods is the tap density (the

Hausner method) to receive the bulk density. This test is performed by using a Hokosawa Powder

Tester. Another test that is performed by using the Hokosawa Powder Tester is the angular repose.

Angular repose data is collected by using a sieve/sifter that is connected to a funnel and the powder

leaves the funnel and falls on to a pan. To ensure that the powder falls onto the pan there is a

vibration setting that can bed adjusted. The powder falls in a mountain shape that a small thin rod is

matched to measure the angle the powder makes. After the pointer/pin is in parallel with the powder

piles angle the Hokosawa Powder Tester outputs the angle of the powder. The smaller the angle the

better the flow-ability.

References[edit]

1. Jump up ̂  http://www.erpt.org/ptf/2. Jump up ̂  http://particles.org.uk/particle_technology_book/index.htm