Chapter 560

It's quiet in the study.

After a while, Xiao Ming drew a picture of 7788, and then suddenly there was a walk outside the study.

"Your Highness, the old slave is back."

Hearing this sound, Xiao Ming put a smile on the corner of his mouth. It was not someone else, but Qian Dafu.

This time, Xiao Ming suddenly remembered that the converter steelmaking process was not a whim. The most important thing he wanted was that Qian Dafu found a magnesite ore in Fengguo, which was the material needed for alkaline furnace lining.

In 1856, British besmarck invented the bottom blown acid converter steelmaking process, which was the beginning of modern steelmaking process. It produced a large number of cheap steel for Europe and further promoted the European industrial revolution.

However, because this method could not remove sulfur and phosphorus, its development was limited. In 1879, Thomas bottom blown basic converter steelmaking appeared in Europe. This method used converter with basic lining to treat high phosphorus pig iron, which further improved the quality of steel.

Because of the lessons learned from the past, Xiao Ming changed from acidic lining to alkaline lining. In the past, he did not push out the converter steelmaking process because of the limitation of materials. Now that he has found magnesite ore, the lining material will not be a problem.

"Come in." Xiao Ming said.

At this time, the door of the study was pushed open, and Qian Dafu came in. With a smile on his face, he held a stone in his arms and said to Xiao Ming, "Your Highness, this is the magnesite mine."

Xiao Ming nodded. The ore in Qian Dafu's hand is square, with smooth surface and some salt like crystals, but Xiao Ming recognized it as magnesite at a glance.

"No mistake, this is magnesite." Xiao Ming grinned, he said: "now your prospecting team is more and more sophisticated, this period of time in Laizhou harvest is good."

Qian Dafu's face was a little dark now, and his teeth were white with a smile. He said, "Your Highness, who can be clever, but Laizhou is really a treasure land. Not only the Lingmei mine, but also a lot of gold and silver mines have been found. We are waiting for mining."

"The gold and silver mines will not move for the time being, and the magnesite will move. At least we need to collect some for use. Now the world is in chaos. We can't buy anything with silver. Barter is the right way." Xiao Ming pondered.

As Qian Dafu said, Laizhou is indeed a treasure land. Not only is the reserve of gold mine the first in China, but also the reserve of magnesite is the second in China. This discovery of magnesite was accidentally discovered when looking for gold and silver.

"Yes, your highness. I'll arrange it when I go back." Qian Dafu said.

In the past three years, from an old housekeeper to a miner, Qian Dafu has suffered a lot, and it is precisely because of his hard work that Xiao Ming got through the most difficult time at the beginning.

Since then, the exploration team has become more and more mature. After consideration, he decided not to let Qian Dafu go to the mine himself. After all, Qian Dafu is now in his 50s.

After pondering for a while, he said: "Dafu, when you come back this time, don't run around with the prospecting team any more. I have established the mineral department in Qingzhou. From now on, you will be in charge of the mineral department and manage the domestic mines."

"Your Highness, is there something wrong with the old slave Qian Dafu looks scared.

With a wry smile and shaking his head, Xiao Ming said, "you want to go somewhere. It's just that you are old now, and there is no one who can speak to your mother when she comes back from Chang'an this time. You have served her for more than ten years, and you can also accompany her to relieve her depression."

Referring to the princess, Qian Dafu sighed, "this chaos in Chang'an is really a pity for my mother. In this case, I'll leave the matter of looking for minerals to my nephew. Now that he's successful in Bowen college, he should go out to experience."

Xiao Ming nodded. When he visited the mine last time, Xiao Ming met Qian Dafu's nephew. This time, Qian Dafu mentioned him and agreed to it.

The master and servant say something more. Xiao Ming takes Qian Dafu to the backyard. Qian Dafu has been running around all this time, but he hasn't seen the princess yet.

"Mother!"

Seeing the princess, Qian Dafu trotted over and suddenly knelt down in front of her. His eyes were sour and he began to cry.

Since he survived, there are only two important people left in Qian Dafu's life, one is Princess and the other is his nephew.

For more than ten years, she has been serving her side. For Qian Dafu, she is not only the host but also a relative.

Princess Wang was joking with Fei yue'er when a dark man knelt down in front of her and leaned back in surprise. She was relieved when she recognized that it was Qian Dafu.

She first gave Xiao Ming a white look. "Ming'er, my mother's concubine sent Qian Dafu to Qingzhou to serve you. How can you let him go out to do the hard work of mining?"

When she arrived in Qingzhou, Princess Zhenfei asked Xiao Ming about Qian Dafu's whereabouts. She also knew where Qian Dafu had gone. At this time, she couldn't smile bitterly when she saw him like this.

Xiao Ming wanted to explain, but he was robbed by Qian Dafu. He said: "madam, your highness, this is because he trusts the old slave. He doesn't trust others to do this job."Zhenfei sighed, "you are just this temper. You are always a good person. It's good to come back this time. When are you going to go back?"

"Your Highness said to let the old slave stay in Qingzhou, and there's no need to go out in the future." Qian Dafu said.

The princess nodded, looked at Xiao Ming and said, "well, it's almost the same. After that, you will accompany me to talk and relieve my boredom. I've been in Qingzhou for a while. I haven't been out of the palace yet. You'll accompany me around the city some other day."

"Niang Niang, you give this to the old slave." Qian Dafu said happily.

Xiao Ming is relieved to see this. During this time, Princess Zhen has been staying in the palace. Now she is willing to prove that she is finally happy.

After chatting with Princess again, Xiao Ming goes to the iron and steel workshop with the drawing. Qian Dafu comes back to confirm that magnesite is real. Now he can set up the converter steelmaking production line.

Once converter steelmaking is put on the agenda, it means that a lot of cheap steel is possible, but the only drawback is the oxygen blowing technology in converter steelmaking.

In fact, due to the limitation of technology, air rather than oxygen was used in converter steelmaking at the beginning. The real technology of oxygen blowing only appeared in 1952.

He has also studied industrial oxygen production. Now Qingzhou can't overcome this technology. It's a high technology to condense the air to more than 100 degrees and then separate it.

So in view of this, he decided to use the traditional method of blowing air, after all, even in the first World War, this method is still not backward, enough for him to use.

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