PRODUCTION OF REFRACTORY KILN-SHELVES AND PROPS USING LOCAL MATERIALS
PRODUCTION OF REFRACTORY KILN-SHELVES AND PROPS USING LOCAL MATERIALS
No Thumbnail Available
Date
1991
Authors
MOLOKWU, GODWIN MADUABUROCHUKWU
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Production of Refractory Kiln-Shelves and Props Using Local
_ Materials
Master of Arts, Industrial Design 1991 33 Pages,
3 tables , 3 Figures, 7 Plates.
The problems of this study is concerned with
exploring into the method of making good kiln-shelves and props
which could be more reliable and durable using local materials
that are easily obtainable. Sabon-Gwaram kaolin from Bauchi
State and Bomo secondary clay from Kaduna State were chosen.
Pressing method which was adopted as the technique
of production needed the use of press-moulds. Two press-moulds:
frame-mould and pipe-mould were designed and constructed using
iron pieces bought from Zaria market.
The clays were collected, tested and processed.
Grog was made from the primary clay. Following the result of
the biaxial blend test for the grog and the clay conducted,
and also following the literature review study, the proportions
of the materials for the body-composition were determined.
The proportions for the shelves were (1) 2 parts clay: 8 parts
grog (2) 3 parts clay: 7 parts grog.
The proportion of the grog sizes was coarse grog 5, medium
size 1, fine grog 4. But for the prop it was medium size
grog 5 and fine grog 5 parts, in the body composition of
3 part clay: 7 parts grog. The proportion of water was 30%
of the dry material in all the cases-Measurement was by volume.
A pressing-machine was initially used for the pressing.
Due to the problem involved in getting access to the pressing
machine, other methods of pressing were introduced, namely:
"Ramming with a falling weight" for the shelves and "Poking
and ramming" for the props.
The following findings were made from the study:-
(1) Materials for the production of kiln-shelves and
props can be easily obtained locally.
(2) Pressing method is a very effective technique
of producing kiln-shelves and props.
(3) Production of efficient kiln-shelves and props is
possible without the use of a pressing-machine.
(4) High temperature above 1300 oC is necessary for the
initial firing of the shelves and props to make
them suitable for use at stone-ware temperature.
In conclusion, production of efficient kiln-shelves
and props with easily accessible local materials has been made
possible using simple equipments and using simple production
process.
Description
A THESIS SUBMITTED TO THE POSTGRADUATE
SCHOOL AHMADU BELLO UNIVERSITY, ZARIA IN
PARTIAL FULFILLMENT OF THE REQUIREMENTS
FOR THE AWARD OF THE DEGREE OF MASTER OF
ARTS IN INDUSTRIAL DESIGN
DEPARTMENT OF INDUSTRIAL DESIGN
FACULTY OF ENVIRONMENTAL DESIGN
AHMADU BELLO UNIVERSITY
ZARIA
1991
Keywords
REFRACTORY,, KILN-SHELVES,, LOCAL MATERIALS