Win a copy of Compost Teas for the Organic Grower this week in the Composting forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education experiences global resources the cider press projects digital market permies.com private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Nicole Alderman
  • r ranson
  • Anne Miller
  • paul wheaton
  • Joseph Lofthouse
stewards:
  • Mike Jay
  • Jocelyn Campbell
  • Devaka Cooray
garden masters:
  • Steve Thorn
  • Dave Burton
  • Dan Boone
gardeners:
  • Joylynn Hardesty
  • Mandy Launchbury-Rainey
  • Mike Barkley

using eggshells to make lime.

 
Posts: 57
3
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I had a light bulb moment this morning. I thought lime can be made from oyster shells. You feed chickens oyster shells to get thicker egg shells. I wondered if theres calcium carbonate that can be burnt then slaked to make lime. I have awful internet, but with some quick googling it appears to be true.

I didnt know if i should put this in the critter forum, building forum, growies forum, or what. Lime is used for covering wattle and daub, preserving eggs, making concrete, making acidic soil more alkaline, making glass, and probably a lot of other thigs.  I guess you would need a lot of shells to lime a house, but hey. save them up for a year or two and just see what you get.
 
pollinator
Posts: 596
Location: Southern Arizona. Zone 8b
78
fish bike bee solar woodworking greening the desert
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Should be 'possible', not sure it's economical.  Egg shells are almost pure calcium carbonate,  so grind them up into a fine power and then cook the powder at 1000°C for an hour or so.

That last bit is the hard part.
 
Posts: 59
Location: Pee Gee, Bee Cee, Cee Aye En Aye Dee Aye
10
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I tried this recently with my daughter, made a small kiln with some firebricks and a tiger torch. We put finely ground egg shells in a stainless bowl and set the torch to it for about 1/2 hour. Only a top thin layer calcined, everything below was full of black soot, I guess next time we need to stir and burn longer.
 
Johnmark Hatfield
Posts: 57
3
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Why poopoo everything? I'm gonna start saving my eggshells.

Here is a video of shells being primitively made into lime and then concrete.

https://youtu.be/Ek3aeUhHaFY
 
I agree. Here's the link: http://stoves2.com
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!