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Quicklime Burned in a Rude Stone Kiln, Ure 1839
Leiem (Wikimedia Commons) · CC BY-SA 4.0
Mary

Imeundwa na

Mary

14. Oktoba 2026FI
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Quicklime Burned in a Rude Stone Kiln, Ure 1839

Limestone burned hot gives off carbonic acid and leaves quicklime. Andrew Ure (1839) describes the oldest kiln: a ring of rough stone walls filled with layers of fuel and broken limestone over brushwood, the top heaped into a cone and covered with sods so it burns slowly and evenly. Quicklime heats hard with water and burns the skin: keep it dry and wear gloves and glasses. The picture: quicklime powder on a watch glass.
Kati
A week

Maagizo

1

Build the ring

Build a ring of rough stones about 2 m across and 1 m high (ours) on bare ground, leaving a gap at the foot for air.

Zana zinazohitajika:

Jiwe BichiJiwe Bichi
SepetuSepetu
Glavu za Kazi za NgoziGlavu za Kazi za Ngozi
2

Load it

Break the limestone into fist-sized pieces. Lay brushwood on the floor, then alternate layers of firewood and charcoal with layers of limestone, heaping the top into a cone.

Vifaa kwa hatua hii:

Kabonati ya Kalsiamu - Chokaa IliyopondwaKabonati ya Kalsiamu - Chokaa Iliyopondwa100 kg

Zana zinazohitajika:

Nyundo kubwaNyundo kubwa
Majani makavu na vijiti vya kuwashiaMajani makavu na vijiti vya kuwashia
KuniKuni
MkaaMkaa
Mizani ya mizani-mbiliMizani ya mizani-mbili
Glavu za Kazi za NgoziGlavu za Kazi za Ngozi
Miwani ya usalamaMiwani ya usalama
3

Burn slowly

Light the brushwood at the foot from a bow-drill ember. When the kiln is burning well, cover the cone with sods (cut turf), leaving the air gap open, so it burns slowly and evenly for several days.

Zana zinazohitajika:

Keekee ya UpindeKeekee ya Upinde
SepetuSepetu
Glavu za Kazi za NgoziGlavu za Kazi za Ngozi
4

Draw the lime

When it has burned out and gone cold, open it up and rake out the burnt stones, which are now lighter and white. Weigh them and store dry in a lidded metal bucket.

Zana zinazohitajika:

Reki ya chumaReki ya chuma
Mizani ya mizani-mbiliMizani ya mizani-mbili
Ndoo ya chuma yenye mfunikoNdoo ya chuma yenye mfuniko
Glavu za Kazi za NgoziGlavu za Kazi za Ngozi
Miwani ya usalamaMiwani ya usalama
Barakoa ya vumbiBarakoa ya vumbi
5

Lime from your stone

Inapakia daftari la Jupyter…

Vifaa

1

Zana Zinazohitajika

13

Mchoro huu unatengeneza

Thumbnail
Kishikilia nafasi

Chokaa hai

Free

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Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

Hardwood Ash from a Clean Fire Lit by Bow Drill

Hardwood Ash from a Clean Fire Lit by Bow Drill

na WoodyNO

Utengenezaji mbao

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Making Charcoal from Hardwood — Pyrolysis in a Pit Kiln

Making Charcoal from Hardwood — Pyrolysis in a Pit Kiln

na CharlieDE

Kemia

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