Chapter 201 The Smelter Tour

The blast furnace of the smelter has always been on Zhang Zhimu's mind, and this time the ignition test city was successful, and Zhang Zhimu also went over with Li Yunhe to participate in their celebration.

Li Dong and Liu Baoxue were overflowing with excitement, and when they saw Zhang Zhimu, Li Dong couldn't stop pointing here and there, and introduced the situation of this big blast furnace to Zhang Zhimu. Judging from the faces of Li Dong and Liu Baoxue, they have spent a lot of effort on this blast furnace.

The current blast furnace and the original blast furnace can be said to be not the same thing at all, the crucible connected to the molten iron at the tap hole can no longer be lifted by manpower, and the rail car made of a steel rail can be dragged by a wire rope from a distance. The feeding port is filled directly to the furnace mouth by the overhead crane. These facilities have never been used before, and the commissioning of this blast furnace has taken a big step forward in the overall level of ironmaking. As Li Dong has always said, this furnace is now the largest, most economical and fastest furnace in the Ming Dynasty.

After watching the stove, Zhang Zhimu and them returned to Li Dong's office. This time, Zhang Zhimu and Li Yunhe came over and brought Li Di and Li Shoutan over.

After everyone sat down, Zhang Zhimu said: "I am very happy to see that your big blast furnace has been successfully put into operation. This marks that the smelting level of our smelter has reached a new level, and I have seen everyone's efforts for this. Needless to say, judging from the faces of Li Dong and Liu Baoxue, I know how many nights you have stayed up. I can imagine how much effort was put in by people I didn't see. I salute you for that. ”

After listening to Zhang Zhimu's words, Li Dong and Liu Baoxue's eyes were a little moist, and they felt that their efforts were worth it. Because of everything they have paid, Mr. Zhang has seen it in his eyes. Both of them suddenly felt that their breathing was very even.

Then Zhang Zhimu said: "Through the commissioning of this blast furnace, we have seen that large-scale production is not the accumulation of small-scale production. In the future, the supply and tapping of our furnace must maintain continuity, which requires a set of strict requirements for each link to ensure that all this is carried out continuously. In other words, our management work must also be taken to a higher level. ”

Li Dong and Liu Baoxue listened to Zhang Zhimu's words and glanced at each other. They said in their hearts, we have been busy for so long, how come this Mr. Zhang saw the doorway as soon as he came. Zhang Zhimu saw their actions and asked, "After your blast furnace is successful, have you ever thought about building a bigger blast furnace?" ”

Zhang Zhimu knew that such a blast furnace was a small blast furnace in his previous life, that is, on the verge of requiring demolition.

Li Dong said: "It stands to reason that it should be possible to build a little bigger. But I'm afraid that our wind pressure is not enough, and if the wind can't blow through, it won't work. Without the steam engine blasting, a furnace like ours would not have been able to produce. ”

Zhang Zhimu smiled and said, "I brought Li Di over today." It's going to solve the problem for you. Li Di: They are building a power plant, first, the chemical plant needs electricity, and the other is to solve your power problem. In the future, your steam engine will probably have to stop, and the effect of electric motors such as air blasts will be better, and the intensity of the air blast will be well controlled. ”

At this time, Li Di took over and said: "According to Mr. Zhang's instructions, the power plant of our smelting plant should have two generators at a time, in case one of them has something wrong and delays the production here." So when the power plant is built, you can boldly use electricity as power. I looked at your entire production situation, and I think that not only the blower can be electric, but also your feeding crane and taphole crucible drive can be replaced by electric drive without people, which is safe and convenient. ”

Li Di's words made Li Dong and Liu Baoxue feel very fresh, but it was impossible to understand them all at once, because they had not seen how the motor worked.

Zhang Zhimu took over and said: "As for the matter of the big furnace later, I will give you a suggestion, one is that you are blowing air directly from the outside air, and my suggestion is to heat the air with the waste heat of the furnace and then blow it into the furnace, which can speed up iron smelting and reduce the consumption of coke." ”

Li Dong and Liu Baoxue admired Zhang Zhimu even more this time, because Zhang Zhimu's words, they understood as soon as they heard them. Zhang Zhimu got to the point. Li Dong has always felt strange, how Zhang Zhimu understands ironmaking, such as sintering, people who have never engaged in ironmaking will never be able to think of it, but Zhang Zhimu actually knows how to use this method. This time, the heating air is then blown into the furnace, which can only be imagined by experienced people.

Ignoring Li Dong and Liu Baoxue's thoughts, Zhang Zhimu continued: "I brought Li Shoutan here today to study the matter of steelmaking with you. When your iron is smelted, you must refine it into steel, not only into steel, but also into better steel. I would like to introduce you to the open-hearth oxygen-blowing steelmaking method. ”

Zhang Zhimu took out a sketch and said: "Everyone has finished the chemistry class and knows that there is a lot of oxygen in the air, we can blow oxygen directly into the molten iron crucible, so that the oxygen and the substances in the molten iron react to produce a large amount of heat energy, so that the temperature of the molten iron will heat up quickly. ”

All of a sudden. Li Dong and Liu Baoxue were even more dumbfounded.

Liu Baoxue asked: "Since there is oxygen in the air, can't we just blow the air?" ”

Zhang Zhimu said: "The oxygen content in the air is not high, most of it is nitrogen, and nitrogen will become brittle when mixed with steel. Besides, the oxygen content there is not enough to raise the temperature in the molten iron. ”

Li Shoutan said: "The key is how to separate the oxygen. ”

Zhang Zhimu said: "That's why you came. We all know that whether it is nitrogen or oxygen, their molecules are both large and small, and nitrogen molecules are much smaller than oxygen molecules. If we put air into a substance, these substances have small pores, and this small hole can only let nitrogen gas with small molecules enter, and oxygen with large molecules cannot enter. Then pressurize. The pressure will press nitrogen gas with a small molecular diameter into the small pores of the substance, and what remains outside is oxygen. This substance is called molecular sieve. ”

Li Yunhe couldn't help but say beside him: "You can't make such a small hole molecular sieve." ”

Zhang Zhimu said: "We can't do it now, but we have ready-made things." Do you remember zeolite? Now when we add them to the feed and make sulfuric acid, we also have to add a little to prevent boiling. Zeolite is a natural molecular sieve. ”

These are things they simply can't think of. Zhang Zhimu said: "Li Shoutan and Li Yunhe are responsible for the matter of oxygen production. My idea is that after compressing the air first, and then putting it into a pressure tank filled with molecular sieve, and then releasing oxygen, opening this air pressure tank, the molecular sieve will release nitrogen at atmospheric pressure, so that one by one, it will continue to produce oxygen, if we use two pressure tanks to produce oxygen, alternately, it will continuously produce oxygen. We should store the oxygen produced in a large oxygen tank, and open the valve when we need to blow oxygen into the molten iron.

Li Yunhe and Li Shoutan both looked around Zhang Zhimu's drawings.

Zhang Zhimu said: "What I said is the basic principle, and you have to consider many factors when designing the specific design. For example, the problem of empty purification and dehydration must be considered, otherwise the life of the molecular sieve will be affected. In addition, zeolite should be treated into small particles to increase their contact area with air. ”

Li Dong said: "Then we can use a large crucible to smelt molten iron into steel at one time." ”

Zhang Zhimu said: "The key is that this crucible must be able to move. Otherwise, after the steel is made, it will be left in the crucible to make a lump of steel. In the future, when the Li Di power plant is completed, we can use the overhead crane driven by the motor to lift the crucible. That's when it's easy. ”

Liu Baoxue said: "I didn't expect there to be so many ways in steelmaking. ”

Zhang Zhimu said with a smile: "It's early, you have all seen the arc lamp, why are they so bright, it is because after the arc discharge, there is a high temperature." In the future, we will also use the heat of the arc to make steel, and at that time, we can make whatever kind of steel we want. ”

Li Di said, "Oh my God, how big is that generator?" ”

Zhang Zhimu said: "This is the next thing we want to study. Now let's get the job done. ”

Leaving the steel mill, Zhang Zhimu and others came to Li Shoutan's chemical factory, the plant for electrolysis of salt, due to the cold weather, it could not be built, and the production equipment began to be assembled in other plants, Zhang Zhimu asked Li Di: "The voltage of the electrolysis equipment in the chemical plant is different from that used outside, how do you solve it?" ”

Li Di said: "I use a DC motor and a DC generator, which can be adjusted to the voltage required by the electrolysis equipment. ”

Zhang Zhimu turned back to Li Shoutan and said: "The voltage of the electrolyzer is about four volts, you can connect it in series so that the voltage can be higher." ”

Li Shoutan said: "Yes, we use a string of electrolyzers. You see that the paper made by asbestos is wrapped around the cathode, so that hydrogen and ** can't touch together, and what flows out is salt and alkaline water without electrolysis. Since the solubility of sodium chloride in water is not greatly affected by temperature, sodium hydroxide crystallizes when cooling. In this way, salt and alkali are separated. Brine can be recycled. ”

Zhang Zhimu asked: "How is the potassium chloride in carnallite separated?" ”

Li Shoutan said: "It is still to use the difference in solubility to separate potassium chloride. First, the carnallite is dissolved with saturated brine heated to 105 °C, and after separating the sodium chloride and insoluble matter, the obtained clarifier is cooled to 25 °C, and potassium chloride crystals are precipitated, which are obtained by washing and drying. The mother liquor is evaporated and concentrated, and after the potassium chloride is recovered, part of it is discharged, and part of it is returned to the leaching carnallite. We've done these experiments many times, and the equipment on the ground is meant to be used in mass production. ”

Seeing the changes in Li Shoutan and their chemistry course after they finished the chemistry course, Zhang Zhimu felt that if he finished the lecture earlier, he would not have to worry about many things. These people have no worse IQ than people in previous lives, and as long as they have the corresponding knowledge, they will work miracles.

Seeing that Zhang Zhimu was satisfied, Li Shoutan pointed to the equipment on the other side and said: "The equipment over there is electrolytic potassium chloride, with them, we can produce potassium chlorate on a large scale." The principle of those devices is the same as that of electrolytic table salt. ”

Zhang Zhimu said happily: "Guarding the altar, I'll wait for you to say this." The progress of many of our things depends on your progress before we can move forward. ”

Li Shoutan said: "Mr. Zhang, don't worry. Our brothers didn't dare to relax the slightest. Especially after listening to your chemistry course, I want to open a window and see my results as soon as possible. ”

Zhang Zhimu said: "The precipitation ** and hydrogen should be properly kept. **Very toxic, hydrogen is more dangerous. ”

Li Shoutan said: "Mr. Zhang, don't worry. We've all thought it through. ”

Li Dong, who came over together, said: "Mr. Zhang, do you want coal tar?" I've saved a lot of money now. ”

Zhang Zhimu said: "Li Dong, let me tell you, that's a baby, you have to remember that the use of these things in the future is something you can't even think of." ”

Li Yunhe said: "When we made the fierce fire oil shells, the fierce fire oil was not enough, so I used coal tar instead. ”

Zhang Zhimu said: "It's no problem to use coal tar instead of fierce fire oil, they have a similar effect on combustion." ”

At this time, Zhang Zhimu did not want to extract gasoline and kerosene and other things, which was not a top priority, but the raw materials of coal tar still had to be preserved, because without Yumen in Jiayuguan and Daqing in the northeast, there would be no large amount of oil, and the production of gasoline, kerosene and diesel would have to rely on coal tar. And the production of coal tar is too limited.

After seeing Li Di's power plant construction site, Zhang Zhimu said to Li Di: "Complete the power plant as soon as possible, and then help Li Dong and them do electrical transformation." Electricity is used where it can be used. After that, we're going to look at power generation on a larger scale. ”

Li Di said: "You haven't asked Yaogang to build a bigger power plant, is there a new consideration? ”

Zhang Zhimu smiled and said, "You kid, your brain is easy to use." Help them get things done well, pay attention to give them lectures, teach them their own electrician, and you will save yourself a lot of trouble. We have so much to do when we get out of here. We must pay attention to cultivating more talents, and we will soon need a large number of people who understand electricity. ”

Before leaving the smelter, Zhang Zhimu had a conversation with Li Dong. Tell him: "Now that the big furnace has been built, we will build more such blast furnaces, and then those small blast furnaces will be slowly eliminated." Now I also see that the biggest bottleneck you face is the problem of transportation, the convoy of horses that come and go every day can barely meet your needs, and if there is any more development, you must build a railway. My idea is to build a railway from Niutou Mountain to your smelter through the kiln. Niutoushan has good coal, and the transportation capacity of the railway is not comparable to other means. ”

Li Dong asked puzzledly: "Then why don't you hurry up and build it?" ”

Zhang Zhimu said with a wry smile: "It takes a lot of steel to build a railway, and it won't be much to build a railway with all your annual steel output, which is why I have repeatedly asked you to increase production." Only your steel production has come up. It's possible to think about the railway. Technically, I don't think there are any obstacles anymore, your son is already familiar with the steam engine, and he can use it on the railroad if he changes it. I think you should think about the problem comprehensively, and set aside the location of the railway station, freight yard and so on when planning. ”

Li Dong suddenly thought of an idea and said: "Mr. Zhang, can you do this, now the iron of many iron factories in Shanxi is not easy to sell, it is better for us to buy some iron first, and make it directly into steel, with steel to build the railway, our transportation problem will be solved, and the output of steel will come up." ”

Zhang Zhimu said: "This is a good idea, I will go back and urge Li Yunhe and them to get the oxygen concentrator out as soon as possible, in that case, it will be easy for you to make steel." Then directly get the rail machine out, and you can tie it together. ”

On the way back to Yaogang, Zhang Zhimu instructed Li Yunhe: "The steam engine at Lingshui Wharf has begun to be installed, and you have to assign some people to build small steam engines and install them on those flat-bottomed boats simultaneously." After the big and small boats are installed, some people continue to refit other boats, and you have to divide up a group and start working on the locomotive design. ”

After listening to Zhang Zhimu's words, Li Yunhe asked happily: "Finally started to work on trains, when did you make up your mind?" ”

Zhang Zhimu said: "I decided after talking to your father. Your father has a good suggestion. We don't have enough steel to build a railway, but we can buy someone else's iron first, and then buy it back and make steel ourselves, isn't that enough? Therefore, you have to pay attention to the matter of oxygen production. Then it is necessary to design a piece of equipment for rolling rails. These links are indispensable. ”

Li Yunhe's words made Zhang Zhimu very encouraged, "Mr. Zhang, don't worry, we have now been able to train a group of people, as long as we force them to do it, they will soon be able to achieve results." Let me tell you, they're all comparing themselves to each other now. They all want to do something on their own. ”

After listening to Li Yunhe's words, Zhang Zhimu suddenly thought of an important thing to forget. Zhang Zhimu, who was angry about this, wanted to pump himself.

Because, it turned out that after the Spring Festival, the cultural test will be started. But as soon as there were many things, he forgot about it. Zhang Zhimu knows that many people are studying hard, and hopes to improve their abilities by studying hard, and therefore increase their salaries. This is something that many workers are looking forward to, but none of the leaders of the kiln gang have thought about it, which makes Zhang Zhimu very disappointed, especially self-blame.

Back in the kiln, Zhang Zhimu gathered the leaders of the kiln at home, first Zhang Zhimu made a review, blaming himself for forgetting this matter. Everyone said: "Mr. Lu Bingyi, if you are not at home, someone else will come up with the topic." ”

Zhang Zhimu said: "I personally participated in the topic. A few of Lu Bingyi's students can participate. But during the invigilation, I asked all the leaders to be present and let everyone pay attention to it. After the incident, the "Kiln Gang Weekly" will also report on this matter. A learning atmosphere must be formed in the kiln. ”

This matter has been supported by everyone.

Chen Yufeng said: "Those who are on construction sites elsewhere should inform them in advance to come back to take the exam. ”

Ouyang He said: "It is better to divide the exam into two exams, and the workers outside take the exam separately. In this case, it will be easy to arrange. The people outside will come back all at once, and the kiln will definitely not be able to live. ”

The final decision was that the exam would be conducted in two parts.

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