The next morning, Ren Baqian went out to meet with Tong Zhenye. He was accompanied by the Arsenal Si Qing Fenghou, and the Arsenal Si Shaoqing Zhe Hongbo. The group led the guards to head straight out of the East City.

Ren Baqian riding the horned cow, the most common mount on the Great Yao Plain, is mixed in the crowd, and it twists its fart from time to time, as if there are nails under it. It is really uncomfortable to ride this thing, which is much worse than the mountain bird.

But riding a mountain bird in the crowd requires great courage. Not to mention the visual sense of BMWs entering an Alto, the faint stench that penetrates your nose is enough to push most people far away.

This was the first time Ren Baqian walked in the east gate of Lancheng. After leaving the East City, he walked two incense sticks and turned north for half an hour, he could see a small mountain bun. He could see the black smoke coming out from afar. When he got closer, he saw a wall surrounded by rocks in front of him. There was a gate in front, which was deserted and deserted. This was Jingtian Lu.

The iron ore of Liucui Mountain is usually melted in a small town outside the mountain, and then transported here like the iron ore of Damo Mountain.

The guards saw a group of people from afar and opened the door. After everyone entered, they could see a large open space, sparsely piled with initially melted iron ore, copper ore and a large pile of dried firewood.

And the ores that Ren Baqian saw at the Ministry of Works yesterday were transported over and piled up aside, and someone was crushing them.

Several big men with a strong face first put the limestone ore on an iron plate, then slapped it down and turned into a pile of small pieces. After a while, a pile of gravel appeared on the iron plate. Then someone transported it to the iron plate on the other side, and a huge stone mill was placed on it, which was similar to the light mill in front of the roller. Two people pushed the huge stone mill forward one left and one right and directly pressed it over the gravel and turned into a pile of smaller year-end, and then pushed it back.

A few times, a piece of stone powder and a small amount of slag appeared on the iron plate. Someone then used a sieve to sift out the powder.

While everyone turned their heads and watched their gravel turn into powder, the people from the Ministry of Works hurriedly came out to greet the ceremony and took everyone in.

It is said that it is an earth kiln, but rather that it is a cylinder made of soil, with a diameter of two meters and a height of three meters. After putting the iron ore inside, a large amount of firewood is placed to melt. The speed is very slow, and a relatively rare firewood called wood burning is needed to push the temperature to a point that is enough to melt the iron.

Then the molten iron will flow out along a groove below.

The iron obtained in this way is very soft and there are a lot of impurities inside. The craftsman also needs to use a lot of time to beat the impurities after heating.

It can be said that such a method of molten iron wrought iron is quite inefficient. Not to mention the time-consuming, the consumption of firewood is also extremely large.

While walking, Ren Baqian listened to Jing Tianlu's Ministry of Works officials introducing the process and nodded to show that he understood.

However, when Ren Baqian was walking inside, he saw a few large boxes one person tall next to the melting iron furnace. Someone kept pushing the wind to the melting iron furnace.

It was the bellows that Ren Baqian and Fenghu mentioned last time.

"With this bellows, the temperature in the furnace has increased a lot, and the iron smelting speed has also increased a lot. Thank you, Mr. Ren, for your thanks." Feng Hu nodded and said to Ren Baqian.

The official from the Ministry of Works looked at Ren Baqian as he heard this and heard from Fengtu’s words that he proposed the blower?

"When will other bellows be prepared?" Fenghu asked the work department official again.

"It will be better in these two days." The work department official quickly replied.

"Has the cement raw materials been prepared according to the proportion?" Ren Baqian asked Tong Zhenye. Tong Zhenye looked at Fenghou, Fenghou looked at Zha Hongbo, and Zha Hongbo looked at the official again.

"Sir, are the stones I sent yesterday? They have already been prepared as stated." The official said quickly.

Ren Baqian glanced around the eyes of several people, and saw them looking at each of them, thinking that he might as well ask the official at the beginning.

“What’s the name?”

"Mr. The lower official is Jingtian Luguan. Just call me Tiemu. If you have any questions, you can ask the lower official." Tiemu said with his fists. The only husband chosen by the empress is the only one in the court who is not an ancient clan, and no matter who he is, he can recognize it.

Not to mention being an official in Lancheng.

"Transfer the cement raw materials." Ren Baqian nodded: "Look at what the effect is when burned."

Next, someone took the cement powder and Ren Baqian looked at it. It was covered with sifted powder.

Then he found an empty furnace to add firewood, then filled the empty core column made of clay with fine holes and put it into the empty furnace. After a moment, heavy smoke rose from above the earth furnace and spread to the surroundings. Everyone retreated to the distance to look.

In order to make the temperature reach the requirement of No. 8,000, there was another person covering his nose and pulling the bellows in the thick smoke, coughing twice from time to time, and then someone changed him down.

"How long will this last?" Tong Zhenye asked.

"It shouldn't take too long, the temperature will be enough." Ren Baqian was not sure. The information he obtained was only the change in cement at a certain temperature, but he didn't say how long it would take to burn.

"Try burning bricks again." Ren Baqian said, looking at the empty earthen stove around him.

I was originally planning to build a brick furnace after the cement was boiled, but now I see this kind of earthen furnace Ren Baqian thinks it can be tried, anyway, I am idle.

They have also retrieved the clay for a while. Although it has not been dried, it has weathered for a long time, and burning bricks should be enough.

Then the craftsman of Jingtian Furnace began to pour the clay powder into the trough and stir it into a mud according to his instructions. Then he pinched out bricks, put them around the wall in the earthen furnace, and then added wood to the middle to start calcining.

"I'm afraid this will take about ten days to burn, and there will be no fire break in the middle." Ren Baqian said to Temu, and Temu hurriedly wrote it down.

Until now, he didn't know what these big guys wanted to burn mud, so they would do whatever they arranged. Now Jingtianlu has nothing to do, and he would have to be idle for at least half a month in a month.

The cement is cooked quickly, and it turns off the heat and cools down quickly before dark. Then it takes out the clay jar and pours the cement inside to the ground. It has been sintered into pieces inside, but when it falls on the ground, it breaks into small pieces.

Everyone looked at Ren Baqian with their eyes. Is this what he said about cement similar to stone?

Ren Baqian squatted beside the pile of clinker and grabbed it with his hands. There were some crystals like glass on his hands, which were sintered at high temperature just now.

"Huh? This is a gem?" Feng Hu was surprised at first, then he looked like he had discovered a big secret on his face.

When I just sent it in, it was obviously soil, but how could there be gems inside after it came out? Although it was very small and broken and not valuable, it was also gems, which were much more expensive than this soil.

Although things did not burn into stones as Ren Baqian said, if they could burn gems from the soil, this would be a great improvement.

But everyone immediately began to think about it.

Where did you dig this soil? I'll send someone to dig it tomorrow.
Chapter completed!