"Kaichi, are you sure that the quality problems of the monsters and iron ore in the mine can be solved. Eunice sat down on the carriage and poked her head out to ask Kaichi.

Jia Yi rode on Xiaoqing's back, and the whole person suddenly relaxed, as if he suddenly had no bones and became a puddle of rotten meat, and looked at Eunice helplessly.

"You've asked several times, and I've said it several times, the sludge monster that came out of the cave is not strong, I can solve it alone, as long as the entrance to the cave is sealed, there will be no problem at all. As for the quality of iron ore, I have already thought of a plan, and it will be good to give it a try when the time comes, and even if there is a problem, it will not be a big problem. Besides, there is still copper ore underneath, although it can't be mined in the monster's den, but it belongs to us after all, and it won't lose money. ”

"You have to be careful, if you lose money, I can't explain it to the rest of the partners. Besides, your share in the Chamber of Commerce is about the same as mine, and if you lose, you yourself will lose money. Eunice kept reminding Kaichi.

They agreed on the purchase of the mine in the morning, and Eunice bought it at a price equivalent to a normal reserve of iron ore. The other two chambers of commerce actually have intentions, but the initial bid is only half of Eunice's, and in the end, it only paid eighty percent of Eunice's price, so they are no longer willing to bid, in their opinion, this iron mine is not worth such a high price for Eunice, only when she was stuck some time ago and went to the hospital in a hurry. However, they didn't know that there were also associated ores such as copper ore underneath, otherwise they wouldn't have paid such a price even if there were monsters attacking them.

"Don't worry, I won't pit anyone, it's almost time to enroll, and the cost of my studies depends on you. ”

Jia Yi's cost of learning magic over the years is comparable to that of an ordinary mage, otherwise his magic level would not have improved by leaps and bounds in the past few years. As far as knowledge learning and talent are concerned, magic experiments can be completely operated by hands, and every operation is money, and if it fails, it can't even be recovered.

"Do you have an idea about the quality of iron ore?"

"Eunice, let's go back and talk about it, aren't you tired like this? The carriage is so bumpy, be careful to knock your head. ”

As soon as Jia Yi's words fell, the carriage happened to pass through a pothole and immediately jumped up, and Eunice was startled and almost hit his head. She patted her chest with palpitations, gave Jia Yi a white look, and retreated into the carriage.

Back in the city, Kaichi began to design an earthen blast furnace for ironmaking. When he was exchanging the Dwarven Forge method in Wickham City, he designed a new type of furnace for old Felwood, through a special furnace cavity design, which can reduce heat loss, enhance fuel burning, and add the blessing of a low-power magic circle, which can greatly increase the furnace temperature almost without additional mana.

Kaichi plans to continue this design by improving the design of the blast furnace, using physical methods as the main method and magic as a supplement to increase the temperature in the furnace as much as possible. If the magic array is used completely, although the temperature can be easily raised, the cost is too expensive. You can't burn charcoal in other people's barbecues, and burn diamonds when you barbecue yourself.

Therefore, unless it is a magic metal with high value, there is no magic array to assist in iron smelting, and even if it is magic metal, it is rarely used directly when smelting, at least it has to be refined into a coarse ingot.

Jiayi refines the fire magic, can accurately perceive the flow of heat, can be targeted design, better retain the heat, and through special design, the heat is reflowed, reused, and the temperature emitted is used to increase the temperature of the blast furnace again. In fact, this job can be done by any magician who refines fire magic, but there is no one who is willing to spend time on it, and it can be regarded as a blind spot in thinking.

However, although this idea is good, there are still many difficulties in implementation, the first is the design of the blast furnace, although Jia Yi knows some of the appearance of the blast furnace, but after all, he has not had an in-depth understanding, and the specific design of the modern blast furnace is not very clear, so he can only reminisce and explore by himself. The design of the blast furnace is completely different from the furnace used by the blacksmith, and the experience gained in the blacksmith's furnace can only be used as a reference, or a theoretical guide, and how to realize the magic circle and heat recycling of the blast furnace also needs to be recalculated.

In the following days, Jia Yi suddenly turned into a mason, playing with mud in the yard every day, using mud to shape and build many small blast furnaces, and lighting fires in them to verify his ideas. Harm Eunice, they thought that Jia Yi was suddenly childlike and was going to play with the house, but fortunately, it was explained clearly later, otherwise Eunice would have been angry.

During this time, Kaichi also wrote his own paper on ultrasonic detectors and submitted it to the Mage Guild, waiting to pass it and then he could become an official first-level arcanist.

After more than a week, Jiayi shaped more than ten blast furnace models, and finally finalized the specific design of the blast furnace. In order to verify the effect, Jiayi built a verification blast furnace of more than 3 meters in the yard to verify the impact on iron ore smelting.

In addition to this, the rune circle on the blast furnace is also a big problem, in addition to the effect, it also puts forward higher requirements for the fault tolerance and economy of the circle. The circle engraved on the blast furnace is different, the blast furnace is likely to smelt ore all day long, and it will continue without stopping, so the circle must also ensure that there is no problem after a long period of operation.

If something goes wrong, it will take a long time to fix and debug, and all you will lose money.

After designing the verification blast furnace, Jia Yi began to make iron in the verification furnace to try the effect.

"Jiayi, is this the thing you designed to make iron?

The ordinary iron smelting method is to directly melt the iron ore in the furnace, and obtain the iron with very poor properties through the reduction reaction, and then the iron is folded by uninterrupted high-temperature forging to remove the carbon content in the iron, and the steel is obtained, so there will be a saying that it will be refined into steel, which is similar to whether it is the other world or the earth.

"This is called a blast furnace, which can very well increase the temperature in the furnace, and with my special design and the assistance of the magic array, you can smelt pig iron of good quality. ”

After speaking, Jia Yi began to add materials to the mouth above the furnace, and the iron ore was crushed and mixed with coal and limestone, and added to the blast furnace, which was supposed to be made of coke, but Jia Yi did not have time to make it, so he could only make do with coal first. The iron ore is the "inferior" ore from the newly bought mine, and originally, this blast furnace was designed for this iron mine, and of course the ore here was used for experimentation.

Then, the furnace fire is ignited, and there is a blower under the furnace to continuously blow air into the blast furnace, and the coal in the blast furnace undergoes incomplete combustion, generating CO, CO and iron ore react to reduce iron ore to iron.

Smoke came out of the furnace, emitting a pungent smell, and when the iron ore was almost smelted, as soon as Jia opened the iron opening, the molten iron came out of it, and the rest of the impurities fused with the limestone and became slag.

When the iron ingots made of molten iron cooled, Jiayi picked up a piece and struck it, making a crisp tinkling sound.

Eunice picked up an iron ingot, looked at it carefully, and asked, "Jiayi, you are pig iron, but it seems that the quality is indeed much better than that of sponge iron, and there are indeed fewer impurities or something." ”

In the past, when iron was smelted, the temperature in the furnace was insufficient, so the iron ore was not melted, and the surface of the smelted iron was covered with pores, which was called sponge iron, so the iron obtained from smelting was likely to contain slag, and the impurities could only be removed by forging. And the temperature of Jiayi's blast furnace is higher, and all the iron ore is melted, and the impurities in the ore will float, so it is cleaner.

However, the iron and carbon content smelted in this way is higher, and if you want to become steel, you must refine it in the second step to remove the excess carbon in the iron.

Jia Yi said: "This is pig iron, and it can be made into steel by refining it again, and the speed is much faster than the original, and the sulfur impurities in it are also burned off by the high temperature, which is just right." ”

After the blast furnace was successfully verified, Jiayi next needed to find an address and really build the blast furnace.