EFFECT OF POWDER COMPOSITION ON THE GRANULATION OF BINARY MIXTURES

Chirangano Mangwandi, JiangTao Liu, Ahmad Albadarin, Gavin Walker

Research output: Contribution to conferencePaper

Abstract

In most granulation processes involving processing of a mixture of powders, the powders have comparable densities and similar particle size distributions. Granulation of powders with large variation differences in powder densities is usually avoided due problems such as particle segregation. The granular product being designed in this work required the use of two different powders namely limestone and teawaste; these materials have different bulk and particle densities.The overall aim of the project was to obtain a granular product in
the size range 2 to 4mm. The two powders were granulated in different proportions using carboxymethyl cellose (CMC) as the binder. The effect of amount of binder added, relative composition of the powder, and type of tea wasted on the product yield was studied. The results show that the optimum product yield was a function of both relative powder composition and the amount of binder used; increasing the composition of teawaste in the powder increased the amount of binder required for successful granulation.Increasing the mass fraction of teawaste in the powder mix must be accompanied by an increase in the amount of binder to achieve the desired product yield. It was found that attrition losses decreased with increasing binder content.
Original languageEnglish
Publication statusPublished - 25 Jun 2013

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Granulation
Binary mixtures
Powders
Binders
Chemical analysis
Limestone
Particle size analysis

Keywords

  • binary mixtures
  • granulation
  • granule strength
  • attrition
  • teawaste

Cite this

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title = "EFFECT OF POWDER COMPOSITION ON THE GRANULATION OF BINARY MIXTURES",
abstract = "In most granulation processes involving processing of a mixture of powders, the powders have comparable densities and similar particle size distributions. Granulation of powders with large variation differences in powder densities is usually avoided due problems such as particle segregation. The granular product being designed in this work required the use of two different powders namely limestone and teawaste; these materials have different bulk and particle densities.The overall aim of the project was to obtain a granular product inthe size range 2 to 4mm. The two powders were granulated in different proportions using carboxymethyl cellose (CMC) as the binder. The effect of amount of binder added, relative composition of the powder, and type of tea wasted on the product yield was studied. The results show that the optimum product yield was a function of both relative powder composition and the amount of binder used; increasing the composition of teawaste in the powder increased the amount of binder required for successful granulation.Increasing the mass fraction of teawaste in the powder mix must be accompanied by an increase in the amount of binder to achieve the desired product yield. It was found that attrition losses decreased with increasing binder content.",
keywords = "binary mixtures, granulation, granule strength, attrition, teawaste",
author = "Chirangano Mangwandi and JiangTao Liu and Ahmad Albadarin and Gavin Walker",
year = "2013",
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EFFECT OF POWDER COMPOSITION ON THE GRANULATION OF BINARY MIXTURES. / Mangwandi, Chirangano; Liu, JiangTao; Albadarin, Ahmad; Walker, Gavin.

2013.

Research output: Contribution to conferencePaper

TY - CONF

T1 - EFFECT OF POWDER COMPOSITION ON THE GRANULATION OF BINARY MIXTURES

AU - Mangwandi, Chirangano

AU - Liu, JiangTao

AU - Albadarin, Ahmad

AU - Walker, Gavin

PY - 2013/6/25

Y1 - 2013/6/25

N2 - In most granulation processes involving processing of a mixture of powders, the powders have comparable densities and similar particle size distributions. Granulation of powders with large variation differences in powder densities is usually avoided due problems such as particle segregation. The granular product being designed in this work required the use of two different powders namely limestone and teawaste; these materials have different bulk and particle densities.The overall aim of the project was to obtain a granular product inthe size range 2 to 4mm. The two powders were granulated in different proportions using carboxymethyl cellose (CMC) as the binder. The effect of amount of binder added, relative composition of the powder, and type of tea wasted on the product yield was studied. The results show that the optimum product yield was a function of both relative powder composition and the amount of binder used; increasing the composition of teawaste in the powder increased the amount of binder required for successful granulation.Increasing the mass fraction of teawaste in the powder mix must be accompanied by an increase in the amount of binder to achieve the desired product yield. It was found that attrition losses decreased with increasing binder content.

AB - In most granulation processes involving processing of a mixture of powders, the powders have comparable densities and similar particle size distributions. Granulation of powders with large variation differences in powder densities is usually avoided due problems such as particle segregation. The granular product being designed in this work required the use of two different powders namely limestone and teawaste; these materials have different bulk and particle densities.The overall aim of the project was to obtain a granular product inthe size range 2 to 4mm. The two powders were granulated in different proportions using carboxymethyl cellose (CMC) as the binder. The effect of amount of binder added, relative composition of the powder, and type of tea wasted on the product yield was studied. The results show that the optimum product yield was a function of both relative powder composition and the amount of binder used; increasing the composition of teawaste in the powder increased the amount of binder required for successful granulation.Increasing the mass fraction of teawaste in the powder mix must be accompanied by an increase in the amount of binder to achieve the desired product yield. It was found that attrition losses decreased with increasing binder content.

KW - binary mixtures

KW - granulation

KW - granule strength

KW - attrition

KW - teawaste

M3 - Paper

ER -