Primitive Technology: Natural Draft Iron Smelt
Subscribe: | Never miss a video! Enable ‘ALL’ Notifications!
Watch my newest content:
Follow Primitive Technology:
Wordpress:
Patreon:
Watch More Primitive Technology:
Newest Uploads:
Pyrotechnology:
Shelter:
Weapons:
Popular Videos:
Contents:
00:00 Building the furnace
04:39 Ore
5:28 Charcoal
7:15 Smelt 1 (fresh ore)
11:12 Result/processing product
13:57 Modifying furnace
16:33 Smelt 2 (recycled slag)
20:50 Result/processing product
21:40 Conclusion
About This Video:
I built a natural draft furnace and smelted iron ore in it, producing a small amount of iron. A natural draft furnace is one where the draft is supplied by convection alone. This is opposed to a forced draft where bellows or fan is used to supply air flow instead. Natural draft furnaces are typically taller than forced draft furnaces to make use of the stack effect. They also often have multiple large air entries or tuyeres to help reduce resistance to air flow. Natural draft furnaces where used to smelt iron in ancient times in Europe and up to more recently in Africa where some are still standing. The lack of the need for bellows reduces labor and complexity.
The furnace was 1.5 m tall and 25 cm internal diameter with 4 tuyeres 5 cm internal diameter. Charcoal was used as a fuel and iron bacteria was used as an ore. The smelt produced about 4 g of iron prills but could probably be improved with a longer preheat and a higher charcoal to or ratio. A second smelt was run with slag from previous smelts using 8 tuyeres this time to increase air flow. But it made only about a gram of iron, possibly due to the slag not having much iron left in it.
Natural draft furnaces do not rely on bellows or blowers and so labor is significantly decreased during a smelt. They are also simpler to operate with less components to break down or maintain. However, I’ve read that they use more charcoal per iron made, possibly because part of the energy from the fuel goes into supplying the air flow through the furnace. With further experimentation, I believe that my natural draft furnaces can make better yields of iron.
About Primitive Technology:
Primitive technology is a hobby where you build things in the wild completely from scratch using no modern tools or materials. These are the strict rules: If you want a fire, use a fire stick - An axe, pick up a stone and shape it - A hut, build one from trees, mud, rocks etc. The challenge is seeing how far you can go without utilizing modern technology. I do not live in the wild, but enjoy building shelter, tools, and more, only utilizing natural materials. To find specific videos, visit my playlist tab for building videos focused on pyrotechnology, shelter, weapons, food & agriculture, tools & machines, and weaving & fiber.
#PrimitiveTechnology #Iron Smelt #Draft Furnace
1 view
265
63
2 months ago 02:11:38 1
FULL VIDEO: 120 Days of Building a House, Surviving and Cooking in The Deep Forest
2 months ago 00:24:38 1
After 2 Years I am Returning to my Shelter on the Cliff
2 months ago 00:09:15 1
Primitive Technology: Brick kiln, brick mold and bricks
2 months ago 01:25:01 1
Building a Bushcraft Sawmill to Build a Log Cabin for Survival in the Wild, Catch and Cook
2 months ago 00:32:08 1
I MADE a CAVE by CARVING the ROCK with FIRE using PRIMITIVE METHODS | DIY Project, Winter camping
2 months ago 00:58:41 2
Full Wolf Moon : Shamanic Drum Journey :Tribal Ambient Meditation
2 months ago 00:57:28 3
Build A Bushcraft Shelter Under The Giant Rock For Survival, Warm Fireplace, Giant Catfish Fishing
2 months ago 00:10:39 1
Primitive Technology: Water Bellows smelt
2 months ago 00:27:25 1
Recipe for longevity Broth Khash from bull hooves
3 months ago 01:12:38 2
The girl completed the house on the abyss, surviving alone
3 months ago 11:07:05 1
(1/4) THE OUTLINE OF HISTORY by H. G. WELLS. Audiobook, full length
3 months ago 03:34:35 1
Survival Alone - Build A Shelter On High Cliff, An Underfloor Heating System, Eel Traps And Cooking
3 months ago 00:13:56 1
Primitive Technology: New Brick Kiln Design
3 months ago 01:08:19 8
Секреты успеха Лидеров в сфере технологий Литиевых аккумуляторов. Большой разговор c Advanced Energy
3 months ago 00:17:19 1
Hard Life in a mountain village of the Carpathians. The family prepares hay for the winter