Under the gushing of molten iron, silicon and manganese are first oxidized, and then it is the turn of carbon in pig iron. Pen, fun, and www.biquge.info

At temperatures of more than 1,500 degrees Celsius, carbon is bonded with oxygen in the air to form carbon monoxide, and the heat released causes the furnace to "boil", and the flames from the furnace mouth almost engulf the blowing pipe and the stove frame – which is why the bracket is also covered with a heat-resistant coating.

A large amount of carbon monoxide escapes and comes into contact with the abundant air at the furnace mouth, and then burns violently, almost as if the furnace is on fire. The roar of the gas expansion overshadowed the sound of the steam engine for a while, and everyone could not help but retreat in front of the volcanic eruption, and Roland was the only one who stood with his hands behind his back against the hot wind, completely immersed in the roar of the steel flames.

Unfortunately, the current technology can only be used to make steel by pouring air, and if it can be replaced with pure oxygen in the future, this fireworks will be even brighter.

The last to participate in the reaction are phosphorus and sulfur, and when the oxides of these two and limestone form slag, the flame begins to retreat, and the molten iron is basically steel. The lighter slag floats on top of the molten steel, and as long as the converter is tilted, the molten steel can be poured out of the tap like tea.

If according to the rules of modern steel mills, at this time, it is necessary to lower the slag ball, slag dart, infrared detection and other methods to avoid the upper layer of scum flowing into the ladle. Neverwinter's current technology can't do this, so Roland's solution is also very simple, that is, don't pour it too cleanly, when there is still a small amount of molten steel left in the furnace, lift the furnace directly, and then pour them out with the slag, waste a little bit, waste a little, collect more can also return to the furnace for re-refining, anyway, he doesn't have to pursue any production benefits.

In order to ensure the quality of the steel, the finishing work is to remove excess oxygen from the molten steel.

The constant flow of bauxite from the fortress acts as a deoxidizer – a bucket of pure aluminium separated from Lucia is poured into molten steel, and the resulting alumina slag floats to the surface along with the unreacted aluminum, and the entire steelmaking process is complete.

When the bright molten steel flowed into the mold and turned into dark red ingots, the officials at the town hall were speechless with shock.

In this era, the main means of steelmaking were still at the level of 100 forged steel, and a steel body armor could be passed down from generation to generation as a family heirloom, and no one had ever seen steel be produced like flowing water - even if the "Steel Star" was able to produce steel in large quantities, the vast majority of people regarded it as an accessory to the witch's ability, and without Anna and Lucia, this kind of steel would not have been produced.

But this time was different, and when they saw that converter steelmaking could be done with the hands of ordinary people, even without the power of witches, they vaguely realized what it meant

There is only one "Iron Star", but there can be an infinite number of converters and workers.

Steel is no longer a rare material, and in the future this sturdy metal will be produced in large quantities from the foothills of the northern slopes, replacing the soft and fragile wooden and bronze utensils.

Roland was pleased with the frightened expressions of the town hall officials – he would not have been a qualified leader if he could not have been shaken by the majestic beauty of the steelmaking process. Workers may only see the ingots in front of them, but they should be able to see the future behind the ingots.

At this point, the coal and iron review industry in Neverwinter had begun to take shape—from mining to iron smelting, then from iron smelting to steelmaking, and finally casting steel into various objects, a process that could be realized by ordinary people. Coupled with a rapidly growing population and universal access to education, Roland could already hear the wheels of steel crushing over the earth.

It is true that the quality of the newly baked steel still needs to be further tested by Lucia, and according to the test results, the blowing time and slag removal formula will be slowly adjusted, but it is finally starting to take off.

......

Roland, who has accomplished a great feat, has not stopped at all, and with the help of the memory replay of the dream world, he still has a lot of work to do.

Now that the primary textbooks have been completed and rewritten, he has turned his attention to the next level of mechanical textbooks - Neverwinter now has the foundation for mass production of steel, so high-performance processing equipment is undoubtedly what he needs next. The first few improvised machines were no longer suitable for high-end products, and they were a little overwhelmed when dealing with parts such as fortress guns, heavy machine guns, and grenade fuses.

So where can I find the detailed drawings?

The school library may have been a good choice, Roland went there a lot when he was studying, and he didn't encounter a single encounter with the legendary encounter, but he read a lot of miscellaneous books, many of which dealt with the principles of mechanical design.

After dinner, he went to bed early.

Since wandering in another world is not sleeping, the first day will be very a normal schedule, and with no air conditioning in the apartment building, it is a delusion to catch up on sleep in the hot midday sun. He could only go to sleep early and use this part of the energy saved in his dreams.

When I entered the dreamland, it was still a sunny midsummer morning.

There are more than a dozen missed calls on the mobile phone at the bedside, and when you click on it, you can see that they are all calls from second-class dealers, and the same is true in the text message box.

"Big brother, do you still have armor there? I have a friend who just wants to do some filming, so contact me immediately if you have any. 」

"The price can be opened a little higher this time, how about seven hundred?"

"The swords have also risen by two hundred, which is interesting enough. But you don't need to open the front, it looks weird and scary. 」

"If we are not satisfied with the price, we can talk about it again." 」

"Big brother, can you reply to something?"

Roland went directly to the last text message, which was sent by the bank, showing that the balance in the card had risen to 3,600 yuan, of which the new 1,000 and a half were the living expenses from Jieluo's family.

This money is enough for him for a long time.

With a flick of his fingers, he deleted all the text messages, put on his short-sleeved shorts, and walked into the living room.

At this point in time, Jieluo hadn't gotten up yet.

Roland didn't bother to wait for the little girl to make breakfast, so he walked downstairs and sat down at a flour shop in an alley.

"Boss, a bowl of shredded pork powder, a large portion. ”

"Great!"

If you have money, you have to enjoy it, right? This is a delicacy that even the king can't enjoy—after all, there is no rice in the Grey Castle.

The scalded vermicelli was quickly served, and Roland ate his breakfast while looking at the apartment building opposite.

The farthest distance he'd ever traveled to was the second-hand bookstore and small Internet café two blocks away, and this was the first time he had taken a leisurely time to look at the inhabitants of the Soul Building from another perspective because he was busy scraping together money and memories.