Mature Technology: Making Iron From Sand
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Primitive Technology: Making Iron From Sand
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About This Video:
I made iron from ordinary sand in the creek. Sand contains a minor proportion of iron in the form of magnetite (and some hematite), the rest of the sand being other non iron minerals such as silica. In this form it is not concentrated enough to use as an ore to produce iron metal. However, it is possible to concentrate the magnetite grains from the silica sand using gravity separation, as magnetite is heavier than silica sand.
So, I made a sluice box from a spare roof tile I made in an earlier video. The curved tile acts as a chute and grooves were carved into the concave surface perpendicular to it"s length. When sand was put into the sluice and water was run over it, the heavier magnetite got trapped in the grooves and most of the lighter sand was washed away. The trapped iron sand was then tipped into a collection pot. This sand was then sluiced a second time to concentrate it further. From experiment, it was found that sluicing twice yields the best result for effort, sluicing a 3rd time does little to further concentrate the ore.
A furnace was then built and the ore tested. About 500g of charcoal and 200g of iron sand were charged every 5 minutes, for 6 charges. The result was a small amount of iron in the form of some cast iron spherical prills (similar to other smelts I"ve done) and jagged coral like formations, also of cast iron (a form new to me). When comparing the result to my usual ore, iron bacteria, it produces about the same amount of iron but with a different shape.
The benefit of using iron sand as an ore is that it can be found in almost all geological areas that have a creek or river, though the iron will be more concentrated in some areas than others. I did this experiment in a basalt rich geological location but have heard that sand formed from granite produces even better results. In summary, Iron sand, though laborious to process is easily found in most creeks, rivers and beaches and so this technique of benefiction is worth learning.
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 #sand
Transcription
At the main base... Spare roof tiles from making the hut The iron knife made from iron bacteria Carving grooves into the roof tile The roof tile will become a sluice box to separate the iron bearing component from river sand The grooves act as riffles in the sluice that trap heavier iron oxide particles (magnetite) while allowing the lighter sand (silica) to wash away Finished sluice box At the river... Placing the sluice in the water so the current runs through it (from wide to narrow end).
Ordinary sand from the river bank This can be found in creeks and rivers everywhere Putting the sand in the upper portion of the sluice to wash the silica sand and mud away while retaining the iron sand Tipping the water and iron sand into the pot See how the sluice works close up The heavier magnetite component of the sand is retained in the grooves of the tiles After sluicing once the sand is bluish grey indicating a higher iron content A lot of sand needs to be processed to obtain the concentrated ore and this can take many hours Note that some iron escapes in the tailings not far from the end of the sluice (bluish grey sand in the yellow sand).
Run it back through again so it's not wasted The sand that's been sluiced once Now sluicing that sand a second time to concentrate it even further Observe how the heavier sand grains stay in the grooves while the lighter sand washes away Once sluiced sand on the left, twice sluiced sand on the right. The twice sluiced sand is finer and more concentrated After much work the concentrated iron sand is ready to test Digging a pit to mix clay Digging clay from the creek Clay into mixing pit.
Making a air pipe for the smelting furnace (tuyere) Drying tuyere Digging a furnace hearth Lining with clay to form a bowl hearth (25 cm wide, 12.5 cm deep) Tuyere penetrates 2.5 cm from inner wall, 15 degrees down from horizontal Making walls of furnace, 25 cm inner diameter at base tapering to about 15 cm at the top. 37.5 cm tall from the tuyere height, 50 cm tall in total from the bottom of the pit Dry firing the furnace Centrifugal blower spun using a bark fiber cord thusly Connecting blower to furnace.
The tile roof protects the furnace from the rain while not burning down Making charcoal in the now empty clay mixing pit Making more rope to use on the blower Extinguishing the coals with water Charcoal ready to use in the furnace Sluiced sand (iron ore) Charcoal (fuel) Smelt preparations complete One hour pre heat with wood.
Filling the furnace with charcoal 3 single handfuls of iron sand After 5 minutes 3 double handfuls of charcoal, 3 single handfuls of ore After 6 charges of charcoal and ore the furnace was fired till the material burnt down to tuyere level and it was doused with water The slag and iron mass On the outside we see a small iron prill More iron prills Crushing slag to find more A few melted together.
You can tell what is iron and what is slag by crushing it, slag crushes easily but iron doesn't Proof of concept that iron can be smelted from ordinary river sand
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Author: Author Link: Youtube Link: https://www.youtube.com/watch?v=OPIUMpiV0IY Category: Channel Name: Primitive Technology Channel ID: 28 Tags: primitive,making,iron,primitive technology,primitive,technology,primitive technology youtube,youtube primitive technology,prim tech,primitive tech,iron,sand,river sand,how to make iron,primitive technology iron,prim tech youtube,youtube prim tech,magnetite,silica sand,sluice box,cast iron,ore,iron ore,rocks,river rocks,iron bacteria,how to make iron from sand,how to make iron with sand,iron sand,primitive technology sand,make iron,
7 thoughts on “Mature Technology: Making Iron From Sand”
very very exact 👍👍
Right here’s upright science ASMR
please save more movies 🙏
INDUSTRIAL REVOLUTION HERE WE COME
It struck me a whereas within the past when panning for gold that one would possibly perchance perchance perchance upright steal up the black sand to smelt. I admire the riffle board belief!
Лентяй за дело-мозоль за тело…Если это правда откуда мозоли на руках?
bro can now exhaust iron instruments