As the molten iron surged, silicon and manganese were oxidized first, and then the carbon in the pig iron was oxidized.
At a temperature of more than 1,500 degrees, the carbon and oxygen in the air combined to form carbon monoxide. The heat released caused the furnace to "boil". The flame ejected from the furnace mouth almost engulfed the blowpipe and the grate. This was why the grate was also covered with a heat-resistant coating.
A large amount of carbon monoxide escaped and came into contact with the abundant air outside the furnace mouth. Then it burned violently, as if the furnace had been set on fire. For a moment, the roar produced by the expansion of the gas overshadowed the sound of the steam engine. Everyone could not help but step back in the face of this volcanic eruption. Only Roland stood with his hands behind his back, facing the hot wind, completely immersed in the roar of the steel flame.
Unfortunately, the current technology could only inject air to smelt steel. If pure oxygen could be used in the future, the flame would be even brighter.
The last to participate in the reaction were phosphorus and sulfur. When the oxides of these two and limestone formed slag, the flame began to recede. At this time, the molten iron had basically become steel. The lighter slag floated on top of the molten iron. As long as the converter tilted, the molten iron could be poured out of the tap like pouring tea.
According to the rules of modern steel mills, at this time, slag blocking balls, slag blocking darts, infrared detection and other methods would be used to prevent the scum from flowing into the ladle. The current technology in Neverwinter was not capable of this, so Roland's solution was very simple. He did not pour the molten steel too thoroughly. When there was still a small amount of molten steel left in the furnace, he would directly lift the furnace and then pour it out with the slag. It was not a big deal to waste a little bit of molten steel. If he collected a lot of molten steel, he could put it back in the furnace and refine it again.
To ensure the quality of the steel, the last step was to remove the excess oxygen in the molten iron.
The continuous shipment of bauxite from Longsong Stronghold could act as a deoxidizer. A barrel of pure aluminum separated by Lucia was poured into the molten steel. The resulting alumina slag, along with the unreacted aluminum, floated to the surface. At this point, the whole steelmaking process was completed.
When the bright molten steel flowed into the mold and turned into pieces of dark red steel ingots, the officials in City hall were so shocked that they couldn't speak.
In this era, the main method of making steel was still at the level of forging steel. A steel armor could be passed down from generation to generation as a family heirloom. No one had ever seen steel being produced like flowing water. Even though the "Star of Steel" could produce steel in large quantities, most people regarded it as an accessory of the witches' ability. Without Anna and Lucia, this kind of steel could not be produced.
But this time it was different. Seeing that ordinary people could do it without the help of witches, they faintly understood what it meant.
There was only one Star of Steel, but there could be countless converters and workers.
Steel was no longer a rare material. From now on, this strong metal would be produced in large quantities from the foot of the North Slope Mountain to replace the soft and fragile wooden and bronze wares.
Roland, on the other hand, was very satisfied with the frightened expressions on the faces of the City Hall officials. If they could not be moved by the majestic beauty of the steelmaking process, they probably would not be a qualified leader. The workers might only see the steel ingots in front of them, but they should be able to see the future behind the steel ingots.
So far, Neverwinter's coal and iron recycling industry had begun to take shape. From mining to smelting iron, from smelting iron to steel-making, and finally to casting steel into all kinds of objects, this process could be achieved by ordinary people. Coupled with the rapid growth of the population and the popularization of education, Roland could already hear the sound of the steel wheel rolling over the earth.
Of course, the quality of the newly produced steel still needed to be further tested by Lucia. According to the test results, the blowing time and slag removal formula could be slowly adjusted, but everything had finally begun.
...
After completing a great undertaking, Roland did not stop at all. With the help of the memory replay in the Dream World, he still had a lot of work to do.
Now that the elementary textbooks had been updated and reedited, he turned his attention to the higher level mechanical teaching materials. Now that Neverwinter had the foundation of mass production of steel, the high-performance processing equipment was undoubtedly something he urgently needed. The first few batches of simple machine tools were becoming less and less suitable for processing high-end products. When faced with components such as Longsong Cannons, heavy machine guns, and grenade fuses, they were somewhat inadequate.
Where could he find the detailed drawings?
The school library might be a good choice. When Roland was studying, he often went there, but he did not encounter the legendary encounter. Instead, he read a lot of miscellaneous books, many of which were related to the principles of mechanical design.
After dinner, he went to bed early.
Since wandering in the other world did not count as sleeping, the first day would be very difficult if he followed the normal schedule. In addition, there was no air conditioning in the apartment building, so it was impossible to catch up on sleep under the hot noon sun. He could only go to sleep early and use the energy he had saved in his dreams.
When he entered the Dream World, it was still a sunny midsummer morning.
There were more than ten missed calls on the phone beside the bed. Opening them, he saw that they were all from drug dealers, and the same was in his message box.
"Brother, do you still have any armor? I have a friend who is looking for some filming time. Contact me immediately if you have any. "
[The price can be higher this time. How about 700? "
[Swords and sabers have also increased by 200. That's nice, right? But I don't need to use it. It looks quite scary. "
[If you're not satisfied with the price, we can discuss it again. "
[Big Brother, can you answer me? "
Roland directly turned to the last message, which was sent by the bank. It showed that the balance in his card had increased to 3,600 yuan, of which 1,500 yuan was the living expenses sent by Zero's family.
The money would last him a long time.
With a light tap of his fingers, he deleted all the messages, put on a short-sleeved shirt and shorts, and walked into the living room.
Zero had not gotten up yet.
Roland was too lazy to wait for the little girl to make breakfast. He went downstairs and found a noodle shop in the alley to sit down.
"Boss, a big bowl of shredded meat noodles."
"Okay!"
Now that he had money, he should naturally enjoy it, right? It was a delicacy that even the king could not enjoy — after all, there was no rice in Graycastle.
The boiled noodles were soon served. Roland ate breakfast while observing the apartment building across the street.
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