Ababi on sun 2 mar 03
Lee had asked me to change spodumen into lithium carbonate in a recipe that has a
local material named Amakusa Stone
Seger Weight%
KNO 1.000
Al2O3 4.304
SiO2 41.933
K2O 0.858
Na2O 0.142
Al:Si 9.74
Expan. 4.74
ST 360.61
In order to make the "new spodumen" I had to use a lot of alumina and silica.
I did it though it was not so brilliant because I did not know Lee's local clays.
Some years ago ( out of the 100 years I do ceramics) I could not buy Spodumen in y
tiny peaceful island. Therefore I had to use substitution. The right is to substitute the
whole recipe!
Sure: Spodumen is better (I learned from you Ron!)
By the way:
This recipe of Marty Anderson:
BUTTERSCOTCH ^6
Frit 3134 20
Dolomite 20
Spodumen 20
Ball Clay (OM4) 20
Flint 20
Add:
Titanium Dioxide 10
Rutile 6
( Please note the base is used for other recipes I think opal blue or blue oil spot.)
It led to the base I made with lithium instead of spodumen ( still have some - I do not
give it to children)
and into this base which "unfortunately" I put twice colorants. a small add of granular
manganese dioxide improves it: ( no more than 0.2%)
ABABI'S DEEP YELLOW
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Cone 6 1220 deg.C. -
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Dolomite 19.10
ball clay AK 30.50
Quartz 25.50
frit VO 6004 17.20
Calcium Carbonate 7.70
Titanium Dioxide 17.00
Rutile 8.00
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Seger Weight%
KNO 0.171 3.71%
CaO 0.538 8.51%
MgO 0.291 3.30%
Al2O3 0.295 8.48%
B2O3 0.179 3.51%
SiO2 3.085 52.27%
TiO2 0.898 20.22%
K2O 0.080 2.13%
Na2O 0.090 1.58%
Al:Si 10.46
Expan. 8.08
ST 368.23
,
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Comment: Use one mottled claybody or add granular manganese otherwise boring
Where is the lithium?
Gone!
I converted it to your "currency" next recipe was not tested:
ABABI'S DEEP YELLOW
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Cone 6 1220C
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Ferro 3134 19.20
Custer feldspar 18.10
EPK Kaolin 19.90
talc Nital 13.10
Wollastonite 13.80
Flint 21.40
Titanium Dioxide 17.00
Rutile 8.00
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Seger Weight%
KNO 0.171 3.50%
CaO 0.541 8.58%
MgO 0.288 3.28%
Al2O3 0.298 8.60%
P2O5 0.001 0.04%
B2O3 0.178 3.51%
SiO2 3.092 52.54%
TiO2 0.877 19.82%
K2O 0.056 1.50%
Na2O 0.114 2.00%
Al:Si 10.36
Expan. 8.05
ST 368.11
http://tinyclick.com/?ZGAK1U
This is the time to thank Ron Roy and Tom Buck helped me with this recipe in the
early stages - before I was a "glaze addict".
Back to the spodumen: If you will send me Lee the whole recipe +your local clay I
might be able to improve it
Ababi Sharon
Glaze addict
Kibbutz Shoval Israel
ababisha@shoval.org.il
http://members4.clubphoto.com/ababi306910/
http://www.milkywayceramics.com/cgallery/asharon.htm
and also
http://www.israel-ceramics.org/membersGallery/personalpage.asp?MID=507
---------- Original Message ----------
>And an expansion so low it would crack and/or shiver off any of the usual
>types of bodies we use.
>When I calculate 3 different spods I get 7.23, 7.64, 5.92% Li2O - don't
>forget - Lithium Carb. has an LOI of 60%
>RR
>>
>> I just wanted to point out how excessive 15% lithium is. If you made
>>a glaze from 100% spodumene, you will have 15% lithium.
>>
>Ron Roy
>RR#4
>15084 Little Lake Road
>Brighton, Ontario
>Canada
>K0K 1H0
>Phone: 613-475-9544
>Fax: 613-475-3513
>______________________________________________________________________________
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