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Post by Berend on Jan 17, 2018 8:41:03 GMT -8
I got the clinoptilolite from a local farm supply in the Netherlands. It was € 19.95 for 25 kg. I had to order it but they were able to source it within a week for me.
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Deleted
Deleted Member
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Post by Deleted on Jan 17, 2018 9:42:35 GMT -8
It is likely from Germany.
Shipping to the direct neighbours is not very high.
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Post by etownandrew on Jan 27, 2018 17:14:38 GMT -8
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Post by branja on Jan 28, 2018 2:22:21 GMT -8
It turns out that 24 hours can be too long for some binder mixes. I mixed Fire clay and Lye 1:1 as a binder and let it sit 25 hours. At that point, it had set up and could not be used. The pail had a cover on it for the 25 hours. The time for "safe storage" of a binder depends on many factors.Some are: chemical composition, mineral composition, time, storage temperature (some commercial GP binders must be stored in a refrigerator or below 0C). In your case the 1/1= mineral/alkali binder possibly can be saved by adding H2O and heat. As Karl mentioned it several times: "..add some hot water..", because it is still water soluble material. 24h is not a rule. It is just a time most commonly used and accepted in research papers/procedures for liquid water glass with added alkali (changing the original stable WG in a active/reactive unstable Si solution).Some papers dont even use a rest time, some use 48,ect. With other binders (those that are not liquid WG) the "best rest time" must be experimentally determined. The time serves a purpose that chemical reactions take place. Analogy: like adding sugar to your tea. The sugar dos not dissolves in a "blink of a eye", it takes some time (several seconds). Time depends on: do you stir your tea? , did you add 1kg of shugar in one cup? , is the tea frozen or liquid? ect. |
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Post by smartliketruck on Jan 28, 2018 6:55:07 GMT -8
It turns out that 24 hours can be too long for some binder mixes. I mixed Fire clay and Lye 1:1 as a binder and let it sit 25 hours. At that point, it had set up and could not be used. The pail had a cover on it for the 25 hours. I'm curious about the contributing factors, how much water was in the binder mix and brand of fireclay. As far as my local masonry supplier is concerned fire clay and castable refractory are one and the same, thus my eyes bugged out when they told me $80+ for a sack of fire clay. |
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