Several steel pillars nearly 100 feet high stand on the waterfront, and on the tripods around the high columns, hundreds of workers are constantly riveting red rivets into the steel plates, which is the most important auxiliary equipment in the ironmaking blast furnace of the Incheon Iron and Steel Plant, the hot blast furnace, which is the same as the ironmaking blast furnace, which is under construction at the same time.

There are as many as three hot blast furnaces of nearly 100 feet, which is obviously beyond the standard of ordinary iron works, so that even the technical experts sent by the British factory cannot understand why three large hot blast furnaces are needed here, and these three hot blast furnaces are obviously too wasteful to meet the needs of three blast furnaces in similar factories in Europe and the United States.

"I have checked some information, the average air temperature of European and American ironworks is 502C, and now this blast furnace has made some improvements according to my personal requirements, if the original design of a hot blast furnace is still used, it is bound to be in a state of low wind temperature for a long time, not to mention that it does not meet the production requirements, and will also lead to an increase in coke consumption, which will affect its output, and now the three blast furnaces are used at the same time, which can increase the average air temperature to 1006C, considering the use of horizontal rotary air preheater to preheat the air entering the pipeline, The wind temperature should be around 1100 degrees......"

On the construction site of the Incheon Iron and Steel Plant, Tang Haoran explained his intentions to Kwong Xian Li, who explained his intentions to the No. 1 blast furnace of the steel plant, although the No. 1 blast furnace of the steel plant was designed and produced by the British factory, Tang Haoran still made some improvements to it, such as the addition of these wind furnaces, which is to increase the air temperature and increase the amount of hot air entering the blast furnace.

"My lord, you are naturally an expert in metallurgy! But there is one sentence, I don't know whether to ask or not! ”

As a mining engineer. Kwong Xianyu only went to the UK at the end of last year to transfer to metallurgy. At the same time, he supervised the smelting equipment purchased in the government. If it is said that Tang Haoran's talent in the past is just to hear people, then now it is admired by the five bodies, not to mention that his drawing makes the machine make the machine make the machine to transform the blast furnace, even the extremely ordinary refractory brick masonry can also allow it to find a shortcut, according to the method of stacking refractory bricks The speed of stacking refractory bricks has increased nearly twice, and even the formula of refractory bricks fired by the wheel kiln factory is also designed by it. Its quality is much higher than that of the British factory.

"What does Yun Chu have to say, although he said bluntly, although I studied metallurgy, this factory will depend on you in the future!"

The lack of talent is reflected in all aspects, just like the current Kwong Xian Yan in the past only studied mining, metallurgy is only after the UK to learn from the British technician, but even so, at least in the next few years, the factory can only rely on him.

"In order to improve steel production, adults have proposed many inventions, which have not yet been patented in China. If it was stolen by an English technician, wouldn't it be detrimental to us? ”

Studied metallurgy in the UK. Kwong Xian Yan also experienced first-hand the blockade of technology in the British factories, and what he learned was only general metallurgical technology, and now many of the improved designs of adults would not be worth the loss if they were stolen by British technicians.

"Therefore, the final transformation of the blast furnace needs to wait until after a service period, and by that time, you and the technicians in the factory have almost mastered the metallurgical technology, so you can naturally throw off the crutches of foreign technicians, as for this hot air ......."

Pointing to the hot gas stove being installed in front of him, Tang Haoran laughed, these four hot blast stoves looked at the level of craftsmanship in the 19th century, but the inside was at the level of the 20th century. For the role of hot air, as early as a few decades ago, the metallurgical community in Europe and the United States knew that the use of this technology can greatly reduce fuel consumption, increase iron production, and reduce production costs, taking the Clyde factory in England as an example, in 1829, the plant used cold air, the coke ratio was 8.05, in 1830 when blowing in 150 degrees of hot air, the coke ratio was 5.15, and in 1833, when blowing in 313 degrees of hot air, the coke ratio dropped to 2.88.

In the past few decades, the enthusiasm of the British and American factories to further improve the temperature of the hot air has been completely dispelled by its insignificant efficiency, and the reason for this situation is the backwardness of the air supply system, to be precise, the use of steam-powered fans, can not send enough air volume to the blast furnace - the speed of the steam drive fan is low, naturally unable to meet the needs of air supply, and these hot blast stoves use Tang Haoran designed and handed over to the motor manufactured by the machine, which drives the fan, not only increases the air supply volume, It also reduces operating costs.

It is precisely because the British technician in charge of the installation does not understand this that he sees the factory raising the furnace temperature as a waste, and on the other hand, saving energy and reducing coke is not just hot air, it is just an "ancillary" process. But even this "auxiliary process" did not have a similar product in Europe until more than a decade later.

"They can't steal it for the time being, after all, the technology is not in the hot air, let alone ......"

Pointing to the tuyere in the distance, Tang Haoran smiled at Kuang Xian and said.

"I hope they realize the role of hot air, and then we can sell equipment to Europe!"

Assertive!

Tang Haoran has his own self-confidence in metallurgy, now this era is just the initial stage of the modern steel industry, through the analysis of the rail and marine steel plates of this era, Tang Haoran was surprised to find that it is only ordinary carbon steel, low strength, poor wear resistance, ordinary carbon steel is still the mainstream of the steel industry, whether it is shipbuilding or railway, it is only ordinary steel, and its steel quality is even inferior to the construction steel of later generations. Because of this, in Tang Haoran's plan, the main output of the future Incheon Iron and Steel Plant will be the most common steel products - steel rails and shipbuilding steel plates. In the future, the Incheon steel plant will use low-alloy steel with higher strength and better wear resistance, and European and American railway companies will definitely not be able to ignore high-quality rails that are more than three times the current steel rails, and shipbuilders will not be able to ignore the higher quality marine steel plates.

Although its quality is far from being comparable to that of a hundred years later, in this era, Tang Haoran believes that the products he designs definitely belong to the category of "high-tech", and it is precisely based on his technical confidence that he will be full of confidence in the future of this factory.

"In that case, then I'm too worried!"

After getting the adult's affirmative reply, Kwong Xianyu finally breathed a sigh of relief, he naturally knew that he had experience stealing teachers in the UK, and some technical things could not be prevented, but since the technology was not in the hot air, there was naturally nothing to worry about.

"October!"

As he left the steel plant's construction site, Mr. Tong pondered the time given by Kwong and Engineer Johnson, who was in charge of the installation, two months faster than previously planned, because many of the infrastructure projects were completed before the equipment was in place.

As long as enough equipment and talents are invested, the construction period can be compressed to the shortest...... Through the car window, looking at the laborers wearing cotton jackets and carrying tools to the construction site, Tang Haoran's brows couldn't help frowning.

The current special zone has been expanded several times to the original 4 square kilometers, according to the framework of dozens of kilometers of simple roads built in a winter, the area of the special zone is more than 36 square kilometers, such a "huge" city, how to ensure the future traffic?

Horse-drawn carriages!

This is the answer given by those in the house, whether it is Shanghai or other countries in Europe and the United States, the urban public transportation in this era is a horse-drawn carriage, several horses pull a wooden carriage, next to the carriage stands a groom in a black retro shawl, and at the door of the carriage stands two ticket agents in classical costumes, this is the public transportation of this era.

But can such public transport meet the needs of the Special Administrative Region?

What's more, for Tang Haoran, he hopes that the Special Economic Zone means the modern and symbolizes the future, does he still use those dung pockets and horses as urban transportation? This primitive means of transportation is naturally incomparable with the modern and future in Tang Haoran's mind, not to mention that from buying horses to raising horses, it has always been a huge expenditure for Fuzhong.

Along the way, Tang Haoran saw horse-drawn carriages dragging bricks and stones, it was those carriages that transported bricks, stones, and cement to all corners of the Special Economic Zone, and those American-style freight carriages with a load of several tons, which pressed the smooth "rammed earth roads" in the Special Economic Zone vertically and horizontally, limited by the cost of road construction, only some roads were hardened in the Special Economic Zone in the short term, and the so-called hardening was only to lay stones, and after the coking plant could have enough asphalt, the roadside was hardened and constructed, and the vast majority of the road surface was the traditional rammed earth roadside.

Could it be that because of this, the construction of rails in the city for the transport of goods has been included in the plans of the Special Administrative Region, and the smoke of the steam locomotive is by no means suitable for the city, so it can only be pulled by horse-drawn carriages, and as for the automobile, it is now only just invented, and even the gadgets of the rich are not ranked, and naturally they cannot be used, so what can be used except to use horses to pull wagons?

While pondering, four words popped up in Tang Haoran's mind.

"Tram!"

At the same time, I thought of the tram I had taken in another time and space, accompanied by the quaint "jingling" tram passing through the city, and passengers getting on and off from time to time...... Compared to horse-drawn buses, trams carry more passengers and even lower operating costs. And in history, it should have been 10 years later that Siemens invented the tram, and now it is technically mature?

"Technically, there doesn't seem to be a problem!"

Thinking of the high-power electric motor used in the iron and steel plant, Tang Haoran immediately realized that the tram was technically feasible, the core of the tram is an electric motor, and even compared with the car, the original tram technology is simpler, and even not much more complex than the train carriage manufactured by the locomotive, compared with the complex structure of the steam locomotive, the structure of the tram is simpler, more suitable for the current technical level of the Special Economic Zone.

"Yes, that's right, it's him!" (To be continued......)