Thursday, July 13, 2006

Toxicology Ceramics Glass and Metallurgy--Toxicologie Céramique Verrerie et Métallurgie

Thursday, April 27, 2006

Introduction to this experiment and Series #1

As a starting point I used the Seger formula of C/4,
I have always admired the beautiful glossy white
surface of a melted C/4 everytime I have checked
cone packs after a C/9½ firing :

KNaO .3 Al2O3 .5 SiO2 4.0
CaO .7

Here is the recipe after rounding up or down :

Custer spar 45
Whiting 17
EPK 14
Silica 24

These glazes were fired at C/9½ redux.

QIT Red Dust :

QIT stands for Quebec Iron and Titanium. QIT owns an ilmenite mine in northeastern Quebec. The ore is shipped to Tracy where it is processed into titanium dioxide slags, iron, steel billets and steel autoparts. This dust comes from the dust collecting system of the steelmelting department
and has the following general formula:

FE2O3 85%
SIO2 5.0%
CAO 5.0%
MGO 1.0%
ZNO 2.0%
CARBON 2.0%
TOTAL 100%

It was 170 mesh sieved.

A theoritical substitution is as follows for each 1% of the stuff :

Red Iron Oxide 0.820
Silica 0.050
Whiting 0.060
Dolomite 0.050
Zinc oxide 0.020
Total 1.000

#1
















Custer spar 45
Whiting 17
EPK 14
Silica 24

QIT Red Dust 2

#2
















Custer spar 45
Whiting 17
EPK 14
Silica 24

QIT Red Dust 6

#3
















Custer spar 45
Whiting 17
EPK 14
Silica 24

Bone Ash 9
QIT Red Dust 9

#4
















Custer spar 45
Whiting 17
EPK 14
Silica 24

Bone Ash 12
QIT Red Dust 12

Introduction to Series #2

In this series I lowered the Alumina portion
to .400 and fed the new analysis into the
computer, and the programme told me it
would be a very good base. So, I made
another series of tests using increasing
equal amounts of Cobalt Carbonate and
Green Chromium Oxide with good results.

The base recipe then became :

Custer spar 46
Whiting 18
EPK 7
Silica 28

#1

















Custer spar 46
Whiting 18
EPK 7
Silica 28

Cobalt Carbonate 0.75
Green Chromium Oxide 0.75

#2















Custer spar 46
Whiting 18
EPK 7
Silica 28

Cobalt Carbonate 1
Green Chromium Oxide 1

#3
















Custer spar 46
Whiting 18
EPK 7
Silica 28

Cobalt Carbonate 1.25
Green Chromium Oxide 1.25

#4
















Custer spar 46
Whiting 18
EPK 7
Silica 28

Cobalt Carbonate 1.5
Green Chromium Oxide 1.5

#5
















Custer spar 46
Whiting 18
EPK 7
Silica 28

Rutile 4
Cobalt Carbonate 1.75
Green Chromium Oxide 1.75

Introduction to Series #3

In this step I lowered the Alumina portion even more
to .300 and the results were again excellent, here is
the new recipe :

Custer spar 48
Whiting 19
Silica 33

QIT Blue Dust :

QIT stands for Quebec Iron and Titanium, it owns an ilmemite mine in northeastern Quebec. The ore is shipped to Tracy, Quebec where it is processed to titanium dioxide slags, iron pigs, steel billets, and steel auto parts. This dust comes from the reduction kilns in which the ore is
separated into titanium dioxide slag and iron.
The general formula of QIT Blue Dust is as follows:

FEO 33%
SIO2 17%
AL2O3 7.0%
TIO2 33%
CAO 2.0%
MGO 7.0%
KNAO 1.0%
TOTAL 100%

It was 170 mesh sieved.

A theoritical substitution is as follows for 1% of the stuff:

Red Iron Oxide 0.310
Silica 0.020
EPK 0.110
Rutile 0.290
Dolomite 0.050
Magnesium carbonate 0.110
Custer Spar 0.110
Total 1.000

#1
















Custer spar 48
Whiting 19
Silica 33

QIT Blue Dust 3

#2
















Custer spar 48
Whiting 19
Silica 33

QIT Blue Dust 6

#3
















Custer spar 48
Whiting 19
Silica 33

QIT Blue Dust 9

#4
















Custer spar 48
Whiting 19
Silica 33

QIT Blue Dust 12

Introduction to Series #4

After having lowered the Alumina portion down to .300, I also lowered the Silica portion to 3.0 with good results.
The base recipe became :

Custer spar 59
Whiting 22
Silica 19

#1















Custer spar 59
Whiting 22
Silica 19

Cobalt Carbonate 0.75

#2
















Custer spar 59
Whiting 22
Silica 19

Cobalt Carbonate 1.0

#3

















Custer spar 59
Whiting 22
Silica 19

Cobalt Carbonate 1.25

#4
















Custer spar 59
Whiting 22
Silica 19

Cobalt Carbonate 1.50