"Start feeding."

At Jiang Yan's command, the ore that had been sintered was carried by the members in baskets or grain bags, and the materials were put into the furnace from the furnace along the slope that had been built.

"Coaling." Jiang Yan then ordered again.

As soon as Jiang Yan's words fell, people filled the furnace with smelted coking coal, and then began to light the fire.

As the fire grew larger, a large amount of smoke began to be discharged from the furnace.

Practicing steel, first of all, it is necessary to ensure the temperature, because there is no professional measuring tool, Jiang Yan can only control the temperature inside the furnace by feeling, in order to fear the temperature leakage, Jiang Yan also specially explained that the furnace is surrounded by yellow mud with straw to seal again.

"Mr. Jiang, it's hard work." Seeing that Jiang Yan was busy, Ma Youcai, who was standing there, hurriedly ran over.

"It's all about serving the people, what's the hard work, it's okay, the manpower is arranged here, the fire can't be stopped, and I will send technicians to follow."

After listening to Jiang Yan's words, Ma Youcai nodded in a hurry.

"I'll arrange it here, I must arrange it, Mr. Jiang, this first red brick is about to be baked, and I want you to take a look."

Jiang Yan nodded,

With them, they came to the mouth of the kiln where the refractory bricks were burned before.

After enough refractory bricks were burned, four of the original five kilns have been changed to kilns that specialize in firing red bricks and green bricks.

Taking advantage of my free time, the square in front of these kilns was already full of embryonic cakes made of bricks.

"The fire has been extinguished!" Jiang Yan asked the technician at his own research institute there.

"It's out, the temperature has dropped, and the kiln can be opened."

"Then open the kiln and pay attention to safety." After Jiang Yan finished speaking, he patted the technician on the shoulder.

"Open the kiln"

As soon as the words fell, the green bricks that originally sealed the kiln mouth were taken away by the members, and the heat wave also came out of the kiln, feeling the heat wave, Jiang Yan took two steps back.

The sealing bricks at the mouth of the kiln were taken down, and the personnel who had already been arranged began to go inside to take out the fired red bricks.

Jiang Yan took out a piece of red brick, and tapped the warm brick with his hand, and the brick sounded with a crisp sound like ordinary ceramic, nodded, and looked at the color of the brick again, and found that this batch of bricks was red with black.

"Xiaohu, you see, this should be too high temperature, and the next batch of firing temperature will drop a little." Jiang Yan took the brick and said to the technicians of the research institute who were now there to guide their firing.

The technician who heard Jiang Yan's words said with an embarrassed face: "Mr. Jiang, there is no special thermometer, and this temperature is a bit uncontrollable." ”

"What kind of thermometer, I'll send someone to buy it in Sijiu City immediately." Before Jiang Yan could speak, Ma Youcai next to him hurriedly interjected.

Hearing Ma Youcai's words, Jiang Yan told him the style and standard of the thermometer, and for fear that he would make a mistake, Jiang Yan also drew a pattern for him.

"Okay, I'll send someone to buy it now." Ma Youcai took the drawings and hurriedly arranged for the members to go to Sijiu City to buy the drawings.

"Behind the kiln is fully accepted by the technicians you trained, and you only give instructions on the side, understand?"

"Understood, Mr. Jiang."

Hearing Xiao Hu's words, Jiang Yan nodded.

It has been half a month since he unconsciously came out, and what he should have done has been done, and when He Yuzhu sent the bacon back yesterday, he told himself that all the parts of the trial tricycle have been produced, and the mold of the engine has also been produced according to the drawings, so he is waiting for Jiang Yan to go back to guide the installation of the engine, and he is only waiting for the first batch of steel to be refined and then ready to go back to preside over the assembly of the tricycle.

Thinking of this, Jiang Yan turned his head and returned to the small blast furnace.

Jiang Yan, who returned to the small blast furnace, did not say a word, and quietly watched the changes in the small blast furnace.

As the furnace temperature rises, the furnace ore gradually melts and turns into reddish molten iron.

The members began to add ground limestone to the molten iron, and the limestone powder was used to absorb the impurities in the molten iron.

The purity of this batch of iron ore is not high enough, and if you don't get rid of the impurities in the molten iron, you can't train qualified steel.

Then the blower device continued to blow, and several strong men shouted trumpets and pushed the blower device hard.

A large amount of air is blown into the blast furnace, which continues to increase the furnace temperature on the one hand, and on the other hand, allows the oxygen in the air to react chemically with the carbon in the molten iron. to complete the decarburization of molten iron!

To put it bluntly, the gap between iron and steel is in the carbon content. The carbon content is high, and the iron produced is more brittle, which is pig iron. The carbon content is low, and the iron that is practiced is too soft, which is wrought iron.

Only when the carbon content is appropriate, can it be called steel.

With the passage of time, the carbon content of molten iron becomes less and less, and it begins to shift in the direction of steel.

Jiang Yan took the technicians to pay attention to the state of the molten iron at all times, and estimated that it was almost over.

Jiang Yan shouted loudly: "Prepare to open the furnace." ”

The small blast furnace is opened, and the reddish molten steel is poured out of the small blast furnace and then flows into the mold.

As a large amount of cold water was poured onto the mold to cool down, the molten steel solidified into pieces of steel ingots that were still smiling white smoke.

When the ingot cooled down, the technician hurriedly stepped forward to take a closer look, and even reached out to touch the ingot that was still a little hot.

After observing, the technician picked up a slightly hot piece of steel and came to Jiang Yan.

"Mr. Jiang, the carbon content in this steel is still relatively large, the steel mouth is relatively brittle, these steels can only make some agricultural tools and other things, if you want to make other tools, you must go through the second refining."

Jiang Yan didn't speak, picked up the refined steel block and took a look, the color of the steel block that was supposed to be white was a little gray, and when he saw this color, he knew that what the technician said was right, but even so, the low-end steel was many times better than the molten iron melted with iron before, it was iron, this is steel!

"Leader Jiang, this is steel, we have succeeded." Ma Youcai Cai Cai Cai

When Ma Youcai said this, his eyes looked at Jiang Yan tightly without blinking, for fear that Jiang Yan would not be able to say the word "no".

In Ma Youcai's expectant eyes, Jiang Yan nodded heavily.

After looking at Jiang Yan's affirmative answer, Ma Youcai held the still hot steel block and said loudly to everyone in Shili Township: "We have practiced steel, we have practiced steel." ”

When everyone heard Ma Youcai's words, they all cheered, and the sound was a bit deafening.

"Quick, send this steel block to the county government to report the good news." After cheering, Ma Youcai arranged for the members to take the baked steel blocks to the county to report the good news, but they came directly to Jiang Yan.

In Jiang Yan's stunned effort, he grabbed Jiang Yan's hand and shook it.

"Thank you for the selfless help of Leader Jiang, I didn't say it, in the future, all the unplanned materials in our Shili Township will be given to your research institute."

Hearing this, Jiang Yan wanted to laugh a little, even if he didn't say so, the village below him would also provide us with unplanned supplies.

What Ma Youcai didn't know was that since the technicians who came to support the institute were in place, Xu Damao was completely liberated, and he took advantage of this gathering, he was almost familiar with all the captains, and then with his eloquence, and some materials in demand in the countryside, he soon became the guest of honor of these captains.

This Qin Fengshou can see the things, these captains can also see it, after all, these people are really not stupid, but they just didn't point it out.

So much so that Xu Damao used some materials such as iron pots and farm tools to collect a lot of meat and mountain treasures from the hands of their captains.

With these captains to provide cover, Xu Damao even organized some hunters with better skills to hunt in the mountains.

Now there are a lot of prey in this mountain, and the goods have been collected a lot in the past half month, and the jeep sends the collected materials back to Sijiu City every day.

Due to the relatively hot weather, He Yuzhu made most of the meat collected into bacon.

They even hired someone to build a house with bricks in the recess not far away, and a few people came to help from the back kitchen of the institute.

According to He Yuzhu's report to himself a few days ago, the bacon that has been processed is no less than 10,000 catties, and a lot of processed meat has been placed in the newly built cold storage of the research institute.

There are also a lot of mountain treasures such as dried mushrooms and fungus, but these are basically things that are exchanged for materials, so that they have used up the bills of everyone in the entire research institute for two months, and the director has used almost all his connections for these materials. But he's enjoying it now, too.

(End of chapter)