That is a scene that occurs when the gas in the furnace expands rapidly when heated and rushes out of the furnace carrying burning impurities.
The flames gradually faded away after lasting for dozens of breaths, and were replaced by sparks splashing from time to time - that is, molten iron.
Because the components of these iron products are mixed and there are voids inside, when they melt, the gas in these voids will explode like an explosion, bringing up a large amount of molten iron.
Every time the furnace mouth erupts, there will be a burst of excitement on the scene.
The scene before them was something they had never seen before.
In the past, it was difficult to raise the furnace temperature to above 1,300 degrees for smelting. As a result, the pig iron melted slowly and could not be completely liquefied. The molten iron flowing out was as viscous as magma. The flying sparks are proof of the complete melting of the iron ingots - after exceeding 1,500 degrees, they become heavier "water" and can splash like water droplets with just a slight disturbance.
Ning Wanjun marveled and then looked at Mo Yun, "Has no one ever thought of using Li Shu to smelt before?"
"How come there isn't?" Mo Yun replied, "However, the basic spells of Li Shu cannot take effect for a long time, such as flying flower flames. Not only does the medicine require saltpeter powder, it can only create a flow of fire once, and it cannot even burn a piece of wood. It is guaranteed to ignite, let alone gold and iron objects. As for those guards or Qingjian who are good at using Lishu, they may be able to keep burning, but they will not do such a thing themselves. "
"So the most important thing is the Listener spell?"
"No... the most important thing is the people." At this point, Mo Yun glanced at Xia Fan imperceptibly.
To be honest, when the other person came to her at night and told her this idea, her first reaction was to be extremely surprised. Not only was she surprised that Luo Qingqing would cooperate with Xia Fan so much and reveal all the details of her technique, but she was also surprised that Xia Fan's first thought after testing the properties was to use it in steel smelting.
Needless to say about the former, most alchemists will regard their magic skills as top secrets and will never spread them easily if there is not enough benefit. Obviously Luo Qingqing trusts Xia Fan to some extent; the latter is completely It was Xia Fan's way of thinking that was very different from ordinary people's thinking that was at work - it would have been difficult for her to counter-intuitively connect such a powerful ability of the listener to the melting pot.
However, now that I think about it, this is the way a researcher should think.
She still has a lot to learn.
Ning Wanjun suddenly pulled Mo Yun a few steps to the side and asked in a low voice, "I heard Xia Fan said that he chatted with you all night that day?"
"Uh, this..." Mo Yun was a little stuck for a moment, "Your Highness, I am not..."
"No, that's fine." The princess shook her head.
"ah?"
"Technically, he is the only one who can talk to you all night, right?" She said with a slight smile, "Don't you find that when you talk to other people, every sentence is very brief? I know I have a The boredom of having no one to talk to about your thoughts. Without a player of comparable ability, the days to come will undoubtedly be much more boring. In addition to not wanting to implicate you, I also had concerns in this regard - after all, you are good at and I can’t make up for what I like.”
"Your Highness..." Mo Yun couldn't help but feel a little moved.
"The way you looked when you were instructing them to stack iron ingots and organize tests just now was more energetic than at other times, as if there was light in your eyes. Seeing you like this, as a friend, I am very happy." The princess grabbed her calmly. The hand said, "Do what you want to do, so that I won't regret leaving you in Jinxia City."
…
Xia Fan didn't notice the conversation between the two. He was paying attention to Luo Qingqing's state, "How do you feel? Do you consume a lot of energy?"
"It is indeed a little bigger than simply controlling a handful of dragon scales, but I don't think it is a very strenuous thing." Luo gently felt the Qi in his body and replied, "It shouldn't be possible to hold on like this for an hour or two. question."
It seems that the potential of Qi in energy transformation is indeed huge.
From a certain perspective, the power contained in an alchemist is stronger than that of a steam locomotive, but it is just that the two lacked a way to transform.
Considering the specific form of expression of the spell, this is probably the most underestimated statement.
"The sword's position has begun to sink." Luo Qingqing suddenly reminded.
This means that the upper pig iron blocks have basically melted away, and the flowing molten iron is filling the gaps between each wrought iron below.
For this experiment, he collected almost all the raw materials in the Jinxia City weapons warehouse and the city's blacksmith shops. If we follow the Ministry of Industry's method and want to smelt these iron ingots into steel, it will take at least a hundred people to work continuously for a month or two. However, it has only been less than two quarters of an hour. The first step of the process is also the most difficult. One step has been fully achieved.
The next step is to mix the molten pig iron with the wrought iron as much as possible. If quality is pursued, the smelter will usually use huge iron tongs to clamp the wrought iron pieces and roll them repeatedly in the molten iron to make the contact more comprehensive. This is essentially a helpless approach under the limitation of furnace temperature. Xia Fan obviously has no such concerns. He relies on the dragon scales to further heat and melt the wrought iron with a melting point of more than 1,500 degrees. Both of them become molten iron. Naturally, Best blend ever.
This is the second step, and it is also a step beyond the times.
It makes fast and efficient production possible.
After another two quarters of an hour, Luo gently signaled that the blade would stop sinking. There was no doubt that the liquid level in the furnace had reached its lowest point.
Xia Fan nodded towards Mo Yun and said, "It's time."
The latter took two steps forward and shouted loudly, "Get ready to open the furnace!"
"Yes! Open the furnace door!"
Pulled by more than ten people, the hemp rope pulled the heavy furnace door out little by little - its length and width were less than ten inches, but its length was more than an arm's length, like a plug blocking a leak.
The moment it was pulled out, orange-red molten iron spurted out instantly!
Under the huge pressure, even the ten-inch-long opening caused the scorching red flames to rush out seven or eight steps.
Some people in the crowd started cheering.
Regardless of the final result, the blood flowing along the groove already means that the iron ingot has completed a new smelting.
"Get ready to install the mold! Don't let the molten iron spill into the ground!"
"yes!"
At the other end of the trench, soldiers had placed a large number of stone molds side by side at the inclined opening.
This harvesting process will continue for quite some time.
Xia Fan went directly to the modeling area with Mo Yun, Princess and others.
The blacksmith who had been waiting here skillfully selected a wide and flat stone mold, picked up the red iron bar in it, and threw it into the bucket prepared in advance. After the water vapor dissipated, he fished out the iron bar, placed it on the iron felt, and began to pound it with a hammer—soon, the iron bar was hammered out to an almost ninety-degree angle.
Then he picked up a steel drill and smashed it against the iron piece several times until a few silver-white gaps were exposed on its surface.
After completing these two tests, the blacksmith excitedly reported to the princess, "Your Highness, I can guarantee with twenty years of experience that the iron produced in this furnace is indeed steel!"