Under the guidance of Wang Xinyu and after a month of hard work by the Dongfan Academy of Sciences and the Dongfan Gun Factory, the construction of the extra-large blast furnace began at the newly opened base of the Dongfan Gun Factory, and at the same time, there was also a large steelmaking converter. Pen "Fun" Pavilion www.biquge.info

On the construction site, two rails made entirely of iron extend from the railway line outside, and a steam crane that has just been completed spews white smoke and pants slowly on the track to reach the place where the building materials are placed, the steam crane makes a roar and lifts the heavy building materials through the pulley block, and then the steam crane moves to its destination, placing the heat-resistant materials weighing several tons on the ground.

"Yes, with this thing, we can build a large blast furnace!" Chen Shuigen said with satisfaction.

The large blast furnace under construction is more than seven zhang high, equivalent to the height of a six-story building, the diameter is four zhang, the volume inside the blast furnace has reached more than 600 cubic meters, and this large blast furnace can smelt about 100 tons of raw iron every day. The steelmaking converter can smelt five tons of pig iron into crude steel in just ten minutes!

This kind of steelmaking converter is fired with dolomite to make refractory materials, and lime is added in the process of steelmaking, so that the phosphorus in the molten iron can be burned off, so that the phosphorus oxide is mixed with lime.

As for the process of desulphurization of iron ore, it can be carried out in the sulfur [acid] plant, where the pyrite is sent to the sulfur [acid] plant, and the sulfur and iron are separated by combustion, and the sulfur dioxide produced becomes the raw material for the production of sulfur [acid], and the slag can be transported to the steel plant for ironmaking.

Because of the relatively high phosphorus content of iron ore in China, there were not many iron ores that could be used to make iron in those years. With the alkaline converter steelmaking method, it is possible to make iron ore, which is difficult to make steel, into steel.

Originally, large blast furnaces and steelmaking converters were difficult for workers to operate because there was no large machinery to operate these two furnaces. Now that we have a steam engine, we can use a steam engine to drive the blower and bring in more fresh air, so that the large furnace can be running. The steam engine can also drive the converter, and at the same time drive the air compressor to compress the air into high-pressure air and pour it into the converter, so that the impurities in the molten iron can be burned, so as to make the molten iron into steel.

"Dashuai!" A soldier came to report a piece of information, "The Tartars are preparing to send troops to Korea to destroy the vassal state of Korea and turn Korea into a province of the puppet Qing Dynasty." ”

"Destroy North Korea? That's a good thing! When the Tartars conquer Korea and turn Korea into a province, we will go and rescue them, and Korea will be our province! As for the vassal states, there is no need to return them back! Wang Xinyu sneered. In short, he didn't have the slightest good impression of the Goryeo stick, and the Qing Heavenly Soldiers wanted to send troops to destroy North Korea, which was a great thing.

……

Thousands of miles away, on the land of Liaodong, an army in brightly colored armor is advancing in the direction of North Korea. This army was preparing to enter Korea, cancel the vassal state of Korea, and turn it into the Manchu Eight Banners Army of a province of the Qing Dynasty.

In the ninth month of the lunar calendar, Liaodong in late autumn is already very cold. The banner people, who were accustomed to living in the capital, were reluctant to send troops in this season, but in early autumn, the grain had not yet been harvested. Around the Mid-Autumn season, the grain was harvested, but the grain in North China was simply not enough, and the Qing court sent people to the south to buy grain at a high price, coupled with the local collection of grain, it was easy to gather the military rations before they could go on the expedition.

This expedition to Korea, the Qing army dispatched a total of 122,000 troops, all of which were composed of eight banners and baoyi, and the composition of the troops was: 2,000 elite eight banners outside the pass, 30,000 eight banners in the capital, 20,000 new eight banner soldiers who had just been brought into the Han eight banners from the green battalion, and the remaining 60,000 people were all Baoyi Ahha.

Most of the 20,000 former green battalion soldiers newly incorporated into the Eight Banners of the Han Dynasty were mainly firearms; The most elite of the Eight Banners outside the two thousand passes, each of them can shoot a strong bow and shoot arrows a hundred and fifty steps away, and the archery skills are quite strong.

Xinbaoyitan Jihei also walked in the procession, pushing a large cart loaded with food, knives and guns, bows and arrows, and tents. Although it has begun to snowfall in Liaodong at this time, the climate is unusually cold, but it is much better than the days when he had no meal on the way to wander, now at least he can eat every day, there are thick cotton clothes to wear, and he wears a cotton hat on his head. Therefore, Tan Jiping is very satisfied with his identity as a coat.

Zhang Asi, who was newly incorporated into the Eight Banners of the Han Dynasty, was wearing a white cotton armor, a lightning rod helmet, and a spear, and walked in the team with vigor. Zhang Asi was full of pride in the suit of armor on his body. Once he could only look at the Eight Banners Lord wearing this divine armor with envy, but now he is also wearing this armor.

The reason why Zhang Asi was raised the flag was also because he was full of hatred for the Qiongzhou Army, because Nanyang refined salt made him unemployed. It was still better for the Manchu court to defeat the profiteers, give them food, and now let them serve as soldiers.

With the entry of the Manchu Qing Dynasty, most of the Eight Banners and Baoyi who were originally outside the customs entered the customs, and only a few Eight Banners soldiers were left outside the customs to garrison. From Shanhaiguan to Shengjing, all the way to the deserted, the weeds on both sides of the official road more than one person high have withered yellow, a little snowflakes fall from the sky, fall on the withered yellow weeds, the north blows over the earth, showing a bleak scene.

The leader of the Eight Banners, Etuhun, turned around and shouted, "Brothers, hurry up!" When you go to North Korea, everyone will be able to get rich! ”

In fact, as for this expedition to North Korea, how many chances there are to win, Etuhun is completely unsure in his heart.

The further north you go, the colder the climate becomes, but the equipment of the Eight Banners is not bad, especially the cold equipment, each Eight Banners soldier has at least two layers of cotton armor, which can resist the North Koreans' firearms and bows and arrows, and can keep out the cold. The auxiliaries composed of Bao Yi Aha also wore thick cotton clothes and cotton hats, covering their heads tightly.

Fortunately, the climate was not yet at its coldest point, and there was only a light snow falling in the sky, and the snow cleared. If there is a heavy snowfall during this season, the ground will become muddy and the army will have a hard time.

At the beginning of the tenth month of the lunar calendar, the army of the Eight Banners arrived in Shengjing City, Fengtianfu.

At this time, there were not many people in Shengjing City, and Dolgon entered the customs that year and took away most of the population in Shengjing City. This time, the Eight Banners entered the pass, and almost all the remaining population in the city went to the pass, leaving only some criminals who were exiled here, and some old people who couldn't walk.

The Liaodong general Dadu and the deputy commander Amurtu greeted them with more than 200 soldiers of the Eight Banners who stayed in Shengjing. This time, the Eight Banners Heavenly Soldiers sent troops to Korea, and the Qing army's fierce generals Dadu and Amurtu would go out with the army, leaving only Wu Ma in the city with about 30,000 Baoyi Aha to stay in Shengjing.