old steel technology

Old world Steel Technology

The beginnings of humanity took place thousands of years ago. The breeding also of the breed was increasing rapidly. So they had to produce food on a large scale. Initially wooden tools were used. Later, working equipment was built of metal. It has gradually improved to the present day. Iron is still in high demand nowadays. This is the basic technique used to make iron. The techniques used for old world steel technology purpose are discussed here.

iron ore
Iron ore

An archaeological excavation of a long time ago found these steel stoves. Upon further inspection, several more steel stoves were found. According to carbon chronology, these stoves are about 2000 years old. There was no clear evidence of the steel industry before. Accordingly, Archaeological officers started investigations.

Shape of the iron stove

old steel technology
Old steel technology

It operates using dry wind. One oven can only be used once. The furnace is made of clay. Its front wall is facing the wind and the back wall is covered. The length of the front wall is about 2 meters. The bottom of the furnace is made of the same size. A small circular tubes are placed on the front wall to allow air to enter the furnace. Forming the reed loop reduces the damage caused by the pressure gap inside and out. The liquid iron produced in the iron extract is leached. At the bottom of the furnace there is a hole to drain the liquid iron. A very subtle and excellent technique has been used for this purpose.

process of the iron stove

Pictured above is a cross-section of this furnace. The following are packaged in the following order.

  • First,  Puts hay at the bottom. In this case, hay can be used instead of hay.
  • It then deposits coal over it.
  • Then deposits iron on top. 

Because of this type of slab, the ore is well burned and the extraction is fine. The main fuel is coal. After packed The stove is flames. The air required for combustion comes from the small circular holes in the furnace. Due to the shape of the furnace, the air flows seamlessly. A pressure gradient occurs in the lower airway and the upper burn. So the air flows through the furnace, providing oxygen for combustion. The combustion in the furnace is about 1508`C. When leaving the top, the air is about 925`C. The bottom of the furnace enters fresh air with oxygen in the bottom hole. This allows a continuous air supply into the oven. will return some of the polluted gases to the ore on the stove. Heated to about 850`C, will burn the ore on top of the polluted gasses stove.

Winds contribution to this

wind lines
Wind lines

After about 5 hours, the ore is dissolved and the metal is separated. The iron that is extracted from it, as well as the other dirt from the ore, goes down through the coal to the furnace. Density variations of molten steel and liquid steel. Because of that, they stay in different levels. There is a slight mixing of steel and liquid steel. Some of the smelter leaves the bottom of the furnace. When the furnace descends from the furnace to heat, the carbon in them is mixed with iron. This creates a higher percentage of carbon in the iron. When the process is finished, the furnace is breaking it down and the steel parts are taken out once it has cooled down.

A few years ago a model was developed to demonstrate this extraction process. There were able to produce carbon steel as above. This shows that in the past, iron was produced under the most advanced technology. Old world Steel Technology.

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