Chapter 354 is not easy to brag about, let’s brag about it instead (first update, please subscribe)
Steel is a country.
In this era, no one will doubt that for any country eager to industrialize, they will first put the development of the steel industry at the core.
This is true in Soviet Russia, and it is also true in Borneo, and Donghai Iron and Steel Company is the focus of development. After more than two years of intense construction, at the beginning of the year, Donghai Iron and Steel Company finally put into production, but even so, it did not It can alleviate the demand for steel in domestic construction and production.
“Phase 2!”
Pointing to the distance, Qiu Yuchi said.
“The key is the second phase of the project. Look, sir, that is our No. 3 blast furnace. Although it is an old equipment from the 1930s, its main components are made by the American GE Company, with an annual production capacity of 800,000 tons of pig iron. After the improvement, the annual production capacity is 1 million tons. The main components of the No. 4 blast furnace are manufactured by German Demark and AEG companies. The annual production capacity is 1 million tons of pig iron. As long as coke and ore can be supplied, then our steel production next year will be Can exceed 3.5 million tons! ”
3.5 million tons of steel!
This is the production capacity of Donghai Steel, which is basically the steel production capacity of the entire Borneo. It is production capacity, not output. In fact, when these equipments were still in Japan, due to coal supply and production problems, various None of the blast furnaces ever reached maximum output.
Yes, the equipment for the second phase of the expansion project was all dismantled from Japan.
"What about the steelmaking plant? How much equipment is installed? What is the steel output?"
Li Yi'an asked.
Iron is not important. For industrial production and construction, steel is the most important.
"The Second Steelmaking Plant has one 600-ton mixing furnace, three 300-ton refining furnaces, two 150-ton open-hearth furnaces, and four 100-ton open-hearth furnaces, with an annual production capacity of 580,000 tons of steel ingots. Currently, it has an annual production capacity of 580,000 tons of steel ingots. The main equipment has been basically installed, and the third steelmaking Plant, one of the two 600-ton iron mixing furnaces has been completed, the other is nearing completion, four 300-ton refining furnaces have also been completed, and six 150-ton open-hearth furnaces have been basically completed, with an annual production capacity of 750,000 tons of steel ingots. ”
< br>Qiu Yuchi continued to introduce.
"Steel ingots need to be processed into steel. The supporting factories of the steelmaking plant include two blooming mills with an annual steel production capacity of 1.06 million tons and a large plant with an annual steel production capacity of 200,000 tons, including rails and special steel, with an annual steel production capacity of 170,000 tons. tons, mainly two small plants for steel pipes and wire rods, in addition to a thin plate plant with an annual production capacity of 80,000 tons and a medium plate plant with an annual production capacity of 70,000 tons. In addition, there are 8 gas generating furnaces whose main equipment is from Germany. Manufactured by Lupp, AEG, Demac, and Japan's Kobe Steel, in addition to old equipment, we have added some German-made equipment."
After introducing the equipment and production capacity of the second phase of the project in detail, Qiu Yuchi added.
“The key is steelmaking, so the core of the third phase plan is to increase the steelmaking capacity by 1 million tons. At present, we have completed the design work of the 300-ton open-hearth furnace, which will be used in the fourth steelmaking plant. Large-scale open-hearth steelmaking, and plans to expand the chamber of First Steel’s 100-ton open-hearth furnace, which is expected to increase production capacity by 50%. ”
Open-hearth steelmaking!
After thinking about it, Li Yian asked.
"I remember that in the steelmaking plant before, you mentioned that it takes 12 hours to make steel in an open-hearth furnace, but the speed of steel-making in a converter is very fast. One furnace can be made in half an hour. It can be said that for steel-making furnaces with the same volume, the converter is an open-hearth furnace. Dozens of times, then can we consider a converter? "
The president's suggestion made Qiu Yuchi say without thinking.
“Although the Australian ore we use has the characteristics of low phosphorus and low sulfur, a large amount of air needs to be blown into the converter to make steel, so the nitrogen content is high, which often requires further refining with an electric furnace, which not only increases production The cost is high, and it also consumes a lot of electricity, so now all countries use open furnaces, and converters are rarely used.”
If it weren’t for the fact that the other party was the president, he would even introduce converters to Hanyang Iron Works, causing The old incident of not being able to smelt qualified steel can be used as an example to refute, but in front of the president, we still need to be appropriately restrained.
“Blow in the air?”
Li Yian said, thinking of the oxygen top-blown converter in later generations.
"What if we change to blowing pure oxygen?"
"Blowing pure oxygen?"
Qiu Yuchi was startled by the sudden suggestion, but his eyes suddenly opened. As soon as he lit up, he said.
“Pure oxygen does not contain nitrogen, so the nitrogen content will be reduced. In this way, the biggest problem of converter steel will be solved. Converter steelmaking is much more efficient than open-hearth steelmaking. And it can also save fuel and reduce costs. Yes, that’s right, it’s pure oxygen. Just blow pure oxygen instead, just blow oxygen..."
Just when Qiu Yuchi was excited about the president's "eureka", Kant, a metallurgical expert from Germany and the company's chief engineer, said next to him.
"Sir, blowing pure oxygen into the converter to make steel is not a new invention." His words surprised Qiu Yuchi,
"Someone has already invented it. Have you done it?”
Li Yian is also a little curious. Since it has been invented, why is no one using it?
"Mr. Manager, you know, blowing air into a rotatable asymmetric converter. This is the Bessemer process or the alkaline Bessemer-Thomas process. Its shortcomings are also well known. For example, the air contains a large amount of Nitrogen, after cheap oxygen became available in large quantities more than ten years ago, research in this area began in Europe. Oxygen blowing was used instead of air blowing. They studied the bottom blowing process. However, due to various reasons, such as refractory material issues, the There were damage to the blower, serious splashing, etc. In the end, these studies were not successful.”
As the chief engineer of the steel company, Kant has certainly conducted research in this area. After all, the cost of converter steelmaking is very high. It is really too low. Compared with open-hearth steelmaking that consumes a lot of gas, it is almost "zero cost".
Of course this is to a certain extent, but compared with the production efficiency of a furnace of steel in half an hour and a furnace of steel in 12 hours, no one can resist it, but the problem is that pure oxygen... is not that good. Blow.
"Mr. Kant, are you saying that blowing oxygen will cause damage to the nozzle?"
"Yes, sir, the damage is very fast, and almost every furnace of steel needs to be replaced. , and its splashing is also very harmful. After all, pure oxygen burns more intensely, so the test results of various countries before the war were not very satisfactory.”
Kant then introduced his attempts before the war. While listening to his introduction, Li Yian did not speak, but frowned and thought. He was not an expert in metallurgy, but he had heard of oxygen steelmaking. In fact, All the secrets are in the name, and now with Kant's introduction, Li Yian found the problem.
“Bottom blow.”
“What?”
“I mean, you all used bottom blow in your experiments, right?”
< br>"Yes sir, this is the principle of the converter. Of course, there is also side blowing. In order to ensure the stirring of the molten pool, the converter basically uses bottom blowing,"
"Then why don't you consider pushing back?"
Li Yian asked rhetorically.
“Since the splashing is strong, top blowing may be able to avoid this possibility. The splashing may even turn into stirring. If that doesn’t work, top blowing should be strengthened to ensure that the oxygen jet can enter the melt. Stirring in the depths of the pool, what do you think?”
This may seem like a flash of inspiration, but it actually started in another world in the 1950s and replaced the open-hearth steelmaking method in just a dozen years. The main steelmaking method is top-blown oxygen converter steelmaking. All the secrets are in the name.
Although it was just a small suggestion, Kant looked at the president in astonishment.
Change the top blow!
Is it that simple?
It’s that simple, and after thinking about it for a while, Qiu Yuchi became a little excited, stood up, and finally clapped his hands excitedly and said.
“Top blowing, yes. In the past, low blowing was used with air, but the oxygen burned too fiercely. If you still use low blowing, it will definitely cause splashing. If you change it to top blowing, blow from top to bottom. , the splashing is naturally under control! That’s right!”
For engineers, sometimes they don't need to conduct many experiments, they just need simple analysis to get the answer, but with just a little speculation, they have already got the answer.
"Sir, your words have awakened the dreamer!"
Qiu Yuchi continued.
“I will organize technical staff to study the process now. If it is successful, then we will start the converter for the third phase of the steelmaking plant.”
Although I know that the results of the research must be very Ideal, but Li Yian still reminded.
"Don't be so anxious. My suggestion is just a glimmer of inspiration. You need to conduct sufficient experimental research before considering its application. After all, it is a new thing."
(End of Chapter)