The cement hardening effect came out. Feng Yunshan, the pen "Fun" Pavilion www.biquge.info went into battle with his own hands, smashing the cement wall with a hammer in his hand, and after rubbing out a little spark, the wall did not even leave a groove, and he was unharmed. The hardness of this hardened cement is comparable to that of stone.

Feng Yunshan is overjoyed! With cement, you can do a lot of things. To build roads and fortifications, cement is an indispensable material. The whole society will be upgraded. However, this demand will be astronomical, and they will have to speed up production, continue to expand and build a few more cement plants.

Feng Yunshan set up a new battalion in the logistics army and ordered it to be an engineer battalion, and sent all the brothers and craftsmen of the Holy Army who participated in the construction of the cement plant to the engineer battalion, and sent the old brothers from the Holy Sect to serve as teachers at all levels of the engineer battalion, and strictly controlled the personnel in the battalion to avoid the leakage of cement formula. Then, the engineer battalion looked for suitable sites in Daozhou, Chenzhou and other places, and built two cement factories nearby.

The success of the cement plant has greatly increased Feng Yunshan's confidence in building a factory. If you want to build fortifications, how can you do without cement without steel bar? But now in the entire place occupied by the Taiping Holy Army, there are not even many iron tools, and even less steel. When I think about the development in the future, steel may be the most important material. Feng Yunshan decided to take advantage of the time he had to personally supervise the work and build the Holy Army's own steel plant as soon as possible!

There are several iron mines in Guiyang, there is a hematite mine in the east of Zhenghe Town, and there is also a pyrite mine in the Baoshan mining area in the west of Guiyang City, and there are iron ore raw materials for iron smelting. The other two raw materials are coke and limestone, both of which are easier to find. In fact, next to the iron mine in Baoshan, Guiyang, there is an iron-making factory, but it is all small smelting furnaces, with a shaft furnace structure, similar to an earthen kiln, and the output is not high.

In Feng Yunshan's memory, the iron-making technology in the Conghua and Sanshui areas of Guangzhou Prefecture has been considered advanced, and it is known as "Suzhou Style, Guangzhou Craftsman", among which the Guangzhou Craftsman refers to the iron-making craftsmen in the Guangzhou area.

Feng Yunshan was still ready to adopt the large-scale steel-making technology of the later generations. At that time, it took a few days to build a steel mill, and it was built in every region, and the process of iron-making was also publicized. Feng Yunshan heard the original chemistry teacher repeatedly mention that that is the blast furnace ironmaking technology, which is the most suitable for now.

The reason why the blast furnace ironmaking process was selected is because of the advantages of simple blast furnace ironmaking process, large production capacity, high labor production efficiency and low energy consumption. Therefore, even if Feng Shaoguang traveled before and after the later generations, the developed countries in the West were ready to phase out blast furnace ironmaking, but this method is still the process used by the vast majority of steel mills in the world. For the current era of small shaft furnace ironmaking everywhere, this is already a top-notch ironmaking process.

The only regret is that the blower equipment, Feng Yunshan can not do it like later generations, using a blower powered by an internal combustion engine or a turbine steam engine to blow the air, he can only replace the blower driven by a water wheel and livestock, which will reduce the production capacity, but even so, compared to the small shaft furnace ironmaking workshop next to the Baoshan Iron Mine, the production capacity is already amazing.

First, the location. Feng Yunshan settled in a place near the river at the edge of Zhenghe Town, seven or eight miles away from Guiyang City, worried that the river water gap was not enough, Feng Yunshan also planned to build a dam in the river to raise the water level difference, and then build a few waterwheels to drive the wind. This place, not far from the Zhenghe hematite mine on the side, has a large amount of limestone across the river, and the only drawback is that there is no coal mine nearby. However, the weight of coal and coke is inherently light, so it can be transported directly.

After choosing a place, Feng Yunshan summoned the holy soldiers and craftsmen in the engineer camp, plus the pai tail in Guiyang City, thousands of people drove into the site selected at the edge of Zhenghe Town and began to build. First, the furnace body is made of refractory bricks inside, the gaps are filled with mud joints, and then the outside is stacked with ordinary bricks, and finally a layer is sealed with cement to ensure that it is both thermal and strong. The blast furnace body is divided into five parts: throat, body, waist, belly and cylinder.

Feng Yunshan only knew the theories on the drawings, and some of them had not actually been seen. Fortunately, the head of the Song mine in the Baoshan mining area in Guiyang is actually proficient in the iron-making method of the small shaft furnace. Feng Yunshan invited him to be the foreman of Zhenghe Iron and Steel Plant, and soon, under Feng Yunshan's theoretical guidance and Song Kuangtou's practical experience, the two were combined to grope for the creation of a blast furnace mutated from the shaft furnace.

Then, a feeding hole was opened in the roof of the furnace to fill iron ore, coke, and limestone (as a flux for slag making). Under the furnace, the air outlet is opened and the air duct is connected to blow in the preheated air.

The water wheel drives the blower, and the wind blows through the air duct to a low furnace, where the waste residue discharged from the blast furnace after iron smelting is placed, and the waste heat is used to preheat the passing air. Then it passes through the air duct and enters the blast furnace.

Coke is already ready-made. Next to the coal mine is an ancient coke mill made by the local method, and there is still a lot of coke made from coal.

After a few days of hard work, it was finally built.

Feng Yunshan remembered the principle of iron smelting. In the blast furnace, the carbon in the coke at high temperature and the carbon monoxide produced by the combustion of oxygen in the air are removed from the iron ore during the rising process in the furnace, and the iron is reduced to obtain iron. The molten iron is released from the iron mouth. Unreduced impurities in iron ore combine with fluxes such as limestone to form slag, which is discharged from the slag mouth to the low furnace. At present, Feng Yunshan has no ability to continue to use the gas generated, so he can only discharge it in vain.

On this day, outside the Zhenghe iron-making factory, a large group of people heard that the Holy Army was going to officially make iron in the newly built iron-making factory, and they rushed to watch. Feng Yunshan was afraid that there would be a spy detective, so he asked hundreds of holy soldiers to surround the entire iron-making factory, and strictly forbade the onlookers to enter. Helplessly, the people who loved to see the excitement and still refused to leave, raised their necks from afar, looked at the tall iron-making furnace in the distance, and waited patiently.

Feng Yunshan saw that the preparations were in place, and the time had come, so he asked Song Mine to command everyone to start lighting the furnace, and after the temperature was raised, he began to feed the materials. The blower pulled by the waterwheel had already started, but at first there was no waste residue to preheat, so Feng Yunshan had a pile of firewood in the low furnace to heat the air.

Soon, the furnace was already a little red, Song Kuangtou was a veteran, he was wet, and quickly opened the furnace door to take a look.

"Holy King, the iron and coke in the furnace are a little black, it should be that the wind is too small!" Song Kuangtou ran over sweating profusely and said loudly.

"Blower the wind!" Feng Yunshan ordered dozens of holy soldiers to speed up the rotation of the blower's turning handle.

After a few hours, the iron ore in the blast furnace finally melted. Song Mine opened the furnace door again, and through the gap, he saw pieces of rolling red molten iron. Song Kuangtou hurriedly asked several iron-making craftsmen, holding a stirring stick several zhang long, constantly stirring the molten iron in the furnace, the fire reflected on the craftsmen's faces, red and red, sweat rained down, and kept flowing down from the face and neck.

Outside the Zhenghe Iron Works, hundreds of onlookers watched as black smoke began to drift out of the tall chimneys. Slowly, the black smoke turned into billowing smoke, like a vicious dragon, rushing into the sky. The crowd began to discuss, but most of them were talking about the success of the Holy Army's ironworks. There are also some people who are worried that this ironmaking factory will not damage the feng shui of Zhenghe Town, but there are many holy soldiers here, and no one dares to speak out and complain in private.

After a few more hours, in the evening, seeing that the molten iron in the furnace had been almost generated, and the iron slag was almost higher than the slag discharge port, Song Mine asked the iron-making craftsman to stop feeding, and asked people to scoop a scoop of molten iron, pour a mud embryo, and then put it into the water to cool it quickly, and soon, an iron hoe was formed.

It really worked! The iron-making factory that the Holy King came up with can actually refine so much molten iron at one time, it is indeed a god! Once again, the onlookers were talking.

Feng Yunshan didn't know what others were talking about him, so he just took a hammer, put the iron hoe on the thick iron plate, and beat it hard, and found that the quality was okay, and it didn't break all at once. However, after using a larger hammer, the iron hoe broke directly when people smashed it, and it seems that the molten iron smelted is still pig iron, which is too brittle.

In any case, the first iron-making factory in the Taiping Holy Kingdom was born, and tens of thousands of catties of molten iron were successfully smelted at one time. Feng Yunshan thought happily. The next step is to turn pig iron into steel!