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capnstemz
Stranger
Registered: 11/30/05
Posts: 78
Last seen: 10 months, 1 day
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lime and calcium carbonate question (ive searched with no clear answer)
#5122770 - 12/30/05 02:10 PM (18 years, 1 month ago) |
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I have searched, but still haven't found the answers I'm looking for. I've used hydrated lime in the past, a brand called HI-YIELD, in a red and yellow bag. This is very caustic and has caused chest pains whenever I used it because it gets in the air. I have also read that the lime should be lower than 2% in magnesium which the brand I use is. The main point of my post is where can I buy just plain calcium carbonate, that way I don't have to worry about magnesium content and the harsh properties of hydrated lime, which in my opinion, If it is caustic to humans, it could be caustic to mushrooms.
Where can I find just plain calcium carbonate (online)?
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Asante
Mage


Registered: 02/06/02
Posts: 86,958
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Re: lime and calcium carbonate question (ive searched with no clear answer) [Re: capnstemz]
#5122813 - 12/30/05 02:21 PM (18 years, 1 month ago) |
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If you moisten hydrated lime it will harden and turn into Calcium carbonate by taking up CO2 from the air.
The best place to put your wet hydrated lime is in a tub in your bedroom, which you will breathe heaps of CO2 into while you sleep, and which gets filtered giving you both the carbonate AND the cleaner air!
If you mix up water with hydrated lime make it so thin that it wont set to a mass, for instance with five times its weight in water, and place it in a plastic tub into your bedroom in a place where you won't trip over it. The chemistry is thus:
Food + air --you--> CO2
Ca(OH)2 + CO2 --room temperature--> CaCO3 + H2O
You can easily turn 750gr hydrated lime into 1kg of Calcium carbonate if you let the mud sit in the tub for a week or so.
And another thing: before you pay through the nose to get stuff online: Hydrated Lime = Slaked Lime, the stuff you can buy for lets say $3 in 50 lbs bags to plaster the walls of your house with. (it is not plaster of paris/gypsum, which is Calcium sulfate, useful as a compost heap additive) The lowest of the low prices gives the best product. It's Slaked lime/quicklime or just plain "lime" you're after, sold in huge bags in places thast sell construction materials.
-------------------- Omnicyclion.org higher knowledge starts here
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FooMan



Registered: 02/02/05
Posts: 8,957
Loc: Earth
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Re: lime and calcium carbonate question (ive searched with no clear answer) [Re: capnstemz]
#5122842 - 12/30/05 02:27 PM (18 years, 1 month ago) |
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Quote:
capnstemz said: Where can I find just plain calcium carbonate (online)?
Go HERE and scroll all the way down until you see "Oyster Shell Flour". Cheap and easy on the lungs.
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Quick WBS Prep
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