Ren Baqian sat on a chair in a daze, this place happened to be a shady place, and the surrounding temperature was as hot as a fire.
According to the summer season, it is already late autumn, but the weather is still hot as hell.
There were clanging and digging sounds on Damo Mountain in the distance.
After the burning of the mountain yesterday, a hair-thin crack appeared on the mountain wall. Gu Qiong and Tao Jiyuan were overjoyed, thinking that they had found a way to excavate the Damo Mountain.
However, Ren Baqian was not as optimistic as the two of them, probably only a little on the surface, and there should be no changes inside.
Of course, this is also due to the different requirements of the two parties. What Ren Baqian wanted was to obtain iron ore that could be used to manufacture weapons for an army of 20,000 people.
Dayao's standard thick-backed long knives are not the kind of knives that weigh three or two catties that ordinary people carry. Each knife weighs about twenty catties, and the iron ore needed is at least twenty-three catties.
And the thousand prisoners on Damo Mountain can only mine one hundred and eighty catties of iron ore in one day, and can only make four knives, and after two years, there are only more than two thousand. They are all used in the army, and it can still be said that they are A drop in the bucket.
You must know that Dayao is not just an army that needs weapons, including hunters in the mountains, and those daily irons.
Although the other iron mine, Liucui Mountain, did not go, Ren Baqian had asked Tao Jiyuan during the chat before that it was in a big mountain, and the mountain road was difficult to walk. Although mining is much easier, transporting it out is also a big problem.
What can a country with a population of 30 to 40 million produce only 10,000 to 20,000 jin of iron ore a year
"My lord, my lord, today's one weighs at least four or five hundred catties, which is the amount that was mined in four or five days in the past."
Ren Baqian didn't know when he fell asleep, but was awakened by Gu Qiong's loud and excited voice in his sleep.
"Oh? Four or five hundred catties?" Ren Baqian rubbed his eyes. It would take a day to light the fire, then water it, and another day to mine, which doubled the speed.
"Then pull more wood. It's best to mobilize some people in the surrounding cities to transport the wood, and then burn the mountains separately, one day on the east side and one day on the west side, and take turns to burn the mountains and mine, so that the efficiency will be improved." Ren Ba. Qian stretched his waist and said. I thought about what the surrounding mountains would look like in a few years. After all, if you want to burn this iron mountain to mine, the wood consumed in a year is not a small amount, but the growth of trees is a cycle of ten years.
And with the reduction of surrounding wood, if you want to maintain this kind of mining speed in the future, you need to send wood from a long distance, so the number of personnel used will be even greater. Let's do this first, and wait until I go back to study the concave mirror.
"What Master Ren said is true." Tao Jiyuan saw that Ren Baqian had doubled the iron ore output in a day or two, and if he followed his words just now, he might be able to increase it by three or four times, and he immediately admired it. "However, I am afraid that this matter must be ordered by His Majesty."
"Go and have a look." Ren Baqian got up and let Gu Qiong lead the way, and went to the foot of Damo Mountain for self-study and observation. As expected, it was just a thin layer, the length of half a finger, or about three centimeters.
"Tao Langzhong, I would like to trouble you to give His Majesty an account and tell us about the things here." Ren Baqian turned around and said.
During dinner, Tao Jiyuan and Gu Qiong still had excited expressions on their faces, and Ren Baqian didn't disturb their enthusiasm, but just said: "Tomorrow I will have a good rest, and don't bother me about big things, and I don't need to give food to you." I'm ready."
"Yes, Lord Ren."
After saying hello to them, Ren Baqian returned to the house and returned to Earth when everyone was about to sleep.
…
It was evening on the earth at this time, Ren Baqian first turned on the computer to search for the news that he had read, and he found it quickly after entering keywords, and there were more than one.
Someone did such an experiment 70 years ago, using a liquid mirror to make the first 50-kilowatt solar furnace, which can melt a 1-centimeter steel plate within 30 seconds.
And a laboratory established 50 years ago was built with 10,000 concave mirrors, which can reach 1,000 kWh, and instantly reach a high temperature of 3,500 degrees at the target.
The melting point of iron only needs to be 1538 degrees, so there is no need for such a large one at all, as long as it is smaller.
In a video on the Internet, a foreign boy can melt iron by installing 00 small nail-sized lenses on the lid of a satellite pot.
These all proved that Ren Baqian's previous idea was feasible.
It doesn’t need to be as big as a foreign laboratory, as long as one-tenth of the size is enough, it can even be divided into ten parts and combined together. After all, it is just to melt the Dharma mountain wall, and there are no high requirements for accuracy in all aspects. Point in a range to ensure that the temperature within the range is sufficient.
That night, Ren Baqian contacted a professor of physics at a certain university in the city through Chen Qing, and met with him the next day, and told him his request. He needed a concave mirror made of a movable and adjustable angle. The solar furnace can melt steel three to four hundred meters away.
The other party needs to provide him with a solar furnace that can be carried by one person, as well as a series of plans for the mold for making concave mirrors in Dayao and the installation angles of all concave mirrors.
For Ren Baqian, this is very troublesome, but for the other party, this matter is very simple. After all, Ren Baqian does not have high requirements for precision, and he can even throw it to a student to complete it, and the reward is 500,000.
After negotiating this matter, Ren Baqian returned to Dayao after a two-day rest.
…
Liucui Mountain is actually on the outskirts of Liuwanda Mountain on the west side of Dayao, but it takes two days to walk up the mountain road to reach the location of the iron ore, and the mountain road is difficult, which is the biggest difficulty in the transportation of iron ore.
A few days after leaving Damo Mountain, Ren Baqian walked on this mountain road.
It was okay when I first entered the mountain, the mountain road is still easy to walk, after all, this road is often passed by people.
But one day later, the mountain road began to twist and turn, with a mountain wall on one side and a mountain stream on the other, with only a one-meter-wide road in the middle.
Although people can walk, but mounts and the like are definitely not.
Even if a person can walk, the speed cannot be increased.
At least Ren Baqian felt dizzy every time he glanced over the cliff next to him.
You must know that there are two to three hundred meters below, and if you fall down, you will become a meatloaf.
Ren Baqian suddenly discovered that he had a big weakness, fear of heights.
Never discovered it before.
Seeing him like this, Teng Ji was also worried, and followed him closely, ready to give him a hand at any time.
If something happens to this person, he doesn't have to go back.
After walking on this road for half a day, when he turned over and finally came to a valley surrounded by cliffs on three sides, Ren Baqian finally let go of the heart he had been carrying all the time, feeling like he was alive again.
The valley is not too big. Apart from more than one hundred guards, there are seven or eight hundred people mining here.
The iron content of the ore in Liucui Mountain is about 50%, so it is much less difficult to mine. It's just because it is very difficult to transport ore or materials in here, so it is difficult to expand the scale.