Super Chief

　　 Basket after basket of materials were quickly put into this earth blast furnace. The earth blast furnace is not big. Even if all the coke is put in at once, only about three tons of molten iron can be smelted.

　　 Three tons of iron sounds like a lot, but don’t forget that the proportion of iron exceeds 7, and these three tons of iron don’t even have half a cubic meter.

　　 However, this is high enough for the tree tribe currently.

Before the feeding, a lot of wood has been set up in the blast furnace. Under the condition that there is no kerosene for ignition, wood can only be used to ignite the fire. As for whether the carbon contained in the wood will have any effect on the molten iron, at this time Shi Xiong can no longer take care of it.

　　 After all, it is the first time to smelt iron with an earth blast furnace. As long as molten iron can be successfully smelted, it is the greatest victory.

"Ignite!" Shi Xiong yelled again, and then the tribe with a long-handled torch stuffed the torch in from the tap hole and the **** outlet. After a while, the gas outlet and feed inlet on the top of the blast furnace began to emerge. The billowing smoke.

　　 It took a long time for the thick smoke to gradually dissipate. At this time, even through the thick furnace wall, the surrounding clansmen could hear the "whooping" flames in the furnace.

　　 The eight clansmen were divided into four groups and stood in front of the four bellows, and began to pull the bellows to spray a steady stream of fresh air into the furnace.

　　 In fact, the best way to make iron is to spray hot air with a temperature of over 1,000 degrees into the furnace, but where are the conditions for heating the air now? So, let the cold air be cold air, the big deal is to burn it for a while.

　　 Coke is not as unburnt as charcoal. When the coke burns, it not only produces extremely high temperatures, but it also has an extremely long burning time.

　　 As the coke is ignited by the wood and releases a huge amount of heat, the iron ore and limestone that have been crushed into small pieces also begin to chemically react with the continuous injection of fresh air.

　　 When the coke burns more and more vigorously under the support of the influx of fresh air, iron ore and limestone begin to melt.

Because of the limitation of the furnace, the heat cannot be dissipated. The temperature in the belly of the earth blast furnace quickly rose to over 1,500 Baidu, and it continued to rise until it stabilized at around 1700 Baidu, although this process It will take a long time.

At this temperature, the iron ore has completely melted, and the pure iron contained in the iron ore turns into pure molten iron, and those impurities will react with limestone to produce slag. These slags will interact with the burning coke and carbon. The **** floats on the molten iron and is finally released from the **** outlet.

　　 A clan member stood on the scaffolding at the top of the blast furnace and observed the changes in the furnace from a distance through the observation hole. Although the light in the hearth is extremely dazzling, it can be seen whether the iron ore inside has melted and molten iron is generated.

　　 From morning until noon, the clan person standing on the scaffold shouted excitedly: "There is already a lot of molten iron in the stove."

　　 Shixiong smiled slightly. Since molten iron is formed, it means that this ironmaking has not failed.

　　 After waiting for a long time, Shi Xiong ordered the prepared tribe to release the refractory plate at the **** outlet.

　　In this kind of small blast furnace ironmaking, the **** must be discharged first, and then the molten iron can be discharged from the tap hole after the **** is discharged two or three times.

　　 This process lasted about half an hour. Finally, when the **** outlet was basically no slag, Shi Xiong ordered the tribe to open the refractory plate of the iron outlet.

When the heavy refractory plate was opened, the white molten iron carried huge heat from the taphole and flowed into the heated square pond below. The square pond suddenly heated up and the sky above the square pond was heated. The air is distorted.

　　 The clansmen who had been preparing for a long time threw the smashed pig iron pellets into the Fangtang. These pig iron particles were smashed out by Stone Bear collecting all the iron tools left in the tribe.

Although the 　　 steel filling method is easy to use, Shixiong finally realized that he did not have wrought iron on hand. The steel filling method requires wrought iron to react with molten iron, and finally steel can be obtained.

　　 Since there is no wrought iron, just use the fried steel method. Anyway, these two steelmaking methods are in the same line.

　　 The smashed pig iron fell into the Fangtang and quickly melted. At this time, the temperature of the molten iron absolutely exceeded 1,500 Baidu, and these pig irons containing a large amount of impurities could not withstand such a high temperature at all.

　　 After these people scattered the smashed pig iron, they quickly picked up the stone rods made of kaolin and began to mix them in the molten iron desperately.

　　 After mixing for a while, these tribesmen were already sweating profusely. Standing next to a Fangtang with a temperature of over 1,500 Baidu to stir the molten iron is not an easy task. Even if the weather is a bit cold now, the people standing next to the Fangtang still can't resist the huge heat emitted by the molten iron for a long time. But it doesn't matter, there are other tribesmen who will take their place and continue to confuse them.

　　When the molten iron began to change a bit to a semi-solidified and semi-liquid state, Shixiong gave the order again: "Scoop the molten iron into the mold!"

　　 Suddenly, dozens of tribesmen with long-handled stone spoons put the heated stone spoons into the molten iron, then scooped out a spoonful of molten iron and poured it into the heated mold.

These molds that are being heated include hammers, iron felts, thin iron plates, shovels, hoes, curved plough plowshares, columbine columbine, steel bars and other shapes. These first batches of steel must first be rushed. The most needed tool. Of course, iron knives, iron spearheads, and big iron pans are also indispensable, but the quantity is a little less.

With the hammer and iron felt, some stronger steel products can be processed. After all, this kind of steel products produced in the form of casting cannot be subjected to heat treatment such as quenching. However, after the hammer and iron felt, it can be forged by heating the iron. Other steel products can be processed by hammering, and various heat treatment processes can also be carried out to strengthen the strength of steel products.

Thin iron plates are prepared for subsequent steelmaking. After testing the carbon content of the iron and steel from this furnace, if the carbon content is relatively low, then these thin iron plates can be used for the next iron smelting. It's time to fill the steel.

　　 As for tools such as shovels and hoes, let alone increase the output of food, the first task now is to increase the output of food. Only when the output of food is increased, can the people of the tribe have the mind to do other things such as steel making and salt making.

　　 And those steel bars, needless to say, were prepared for tame bison.

Stone bears don’t plan to let the tribe’s tamed buffalo be just a few. There are definitely not too many tamed buffaloes. I don’t dare to say that there is one man, but at least it is necessary to ensure that every household has such a large animal, so that the food will be provided. The output will be adequately guaranteed.

　　Of course, if the tribe wants more tamed bison to form a bison team, then it’s not impossible, but it needs a lot of bull nose rings...