Search results
Results from the WOW.Com Content Network
Charcoal is added to a clay Tatara furnace in Niimi, Okayama until a temperature of over 800 °C is achieved. The tatara (鑪) is a traditional Japanese furnace used for smelting iron and steel. The word later also came to mean the entire building housing the furnace.
According to existing archeological records, the first tataras were built during the middle part of the sixth century A.D. [2] Due to the large scale of the tatara, as compared to its European, Indian and Chinese counterparts, the temperature at a given point would vary based on the height in the furnace. Therefore, different types of iron ...
Tamahagane is made of an iron sand (satetsu) found in Shimane, Japan. There are two main types of iron sands: akame satetsu (赤目砂鉄) and masa satetsu (真砂砂鉄). Akame is lower quality, masa is better quality. The murage decides the amount of the mixing parts. Depending on the desired result, the murage mixes one or more types of sands.
Hashino iron mining and smelting site (橋野高炉跡, Hashino kōro ato) is the ruins of an iron smelting and primitive blast furnace built by the Tokugawa shogunate during the final years of the Edo period in the Hashino neighborhood of the city of Kamaishi, Iwate in the Tohoku region of northern Japan.
The traditional Japanese tatara furnace uses charcoal and ironsand to produce a mixture of iron and steel. Small quantities are still made by the Nittoho Tatara in Japan. The tatara smelting process involves direct reduction and—unlike a blast furnace —at no time is the product fully molten.
This test furnace is known to have been in operation to 1858, but a full-scale reverberatory furnace was never completed. [3] This site contains the remnants of the reverberatory furnace chimney, which is 10.5 meters high. Part of the upper part is brick masonry, and the lower part is made of andesite and red clay. About five meters from the ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Once the iron has converted to steel, the clay vessel is broken and the steel bloom removed. Typically ten tons of iron sand yield 2.5 tones of tamahagane , or raw steel. This smelting process thus differs considerbly from that of the modern mass production of steel, and also differs from contemporary Chinese and Korean methods.