Chapter 139: Developing a Rotary Kiln Mysterious Opponent

In the afternoon, Wu Shan was the last to come to Zhang Zhimu's office.

Wu Shan, who was sweating profusely, kept saying as soon as he entered the house: "Mr. Zhang, everyone, I'm really sorry, I'm late." One of our vertical kilns had an accident, and a worker didn't follow the rules and was burned, and I needed to deal with it. I'm sorry to keep you waiting. ”

"Mine Chief Wu, I can't blame you for this." Zhang Zhimu said, "If there is an accident in your vertical kiln and the workers are injured, and you don't deal with it, then you are not a good mine manager." What about the worker's injuries? ”

"Burns, not light." Wu Shan wiped his sweat, "We just sent him to our Yaogang Hospital, Dean Zhang said that his life can be saved." But I guess it's impossible to work anymore. Alas! Just a few days later, tell me ......"

"We should pay attention to production safety." Li Yunhe said, "Workers are injured in almost every factory in Yaogang. If you don't pay attention, you can't do it. ”

"I think so, when everything in front of us is arranged. Li Yunhe, Mr. Lu, we went through all the factories together, and studied with the directors and workers of each factory, which are potential safety hazards. We must do a good job in safety measures and improve the awareness of safe production. Zhang Zhimu said.

"I look at this matter, and I want Yan Bo to participate." Li Yunhe said, "In the future, when we formulate safety production regulations, we also need to send people to conduct regular or irregular inspections." Those who do not produce in accordance with production safety regulations should be severely punished by their responsible leaders. I think this matter can only be carried out if Yan Bo takes the lead. He doesn't know how to talk about it. ”

"Okay, that's it." Zhang Zhimu said.

Zhang Zhimu didn't know much about the lime kiln to kiln, that is, he had been to the cement factory several times because of the project for the cement plant. Due to the bad air there, I didn't want to stay long, but just visited their rotary kiln. I also heard from the people in the factory. Therefore, Zhang Zhimu can only point out an idea to Li Yunhe and them, and they still need to develop and test it themselves.

"Alright, let's get to business today." Zhang Zhimu said, "Everyone already knows that no matter how hard they try, their cement is not enough for us." That's because that's all the efficiency of their manual vertical kilns. Therefore, we must adopt a new way of cement production, which is rotary kiln cement production. In this way, cement production is continuous day and night, the smallest can produce dozens of tons per day, and the large ones can produce thousands or even tens of thousands of tons per day. To put it simply, we need to build a large steel pipe, build a layer of refractory bricks inside, and then put it at an angle, if it rotates slowly, and then pour the dried and crushed cement raw meal into the pipe from the top, dry and grind the coal into powder, and blow it into it from below. Let the heated and burning pulverized coal and the raw cement material convection, and burn the raw cement material into cement. After cooling, it comes out with cement. ”

Lu Bingyi said: "If it can really be like what you said, it can produce cement continuously like a blast furnace, that is a big breakthrough." Our cement can meet our needs. ”

"That's how it works, but the key is to know what our equipment looks like." Li Yunhe said.

Zhang Zhimu picked up a schematic diagram and further said: "What I just said is the core of this production method. This core equipment is very heavy, and he needs to use several rollers to hold up this rotating rotary drum. There are also two fixed parts, one end and one tail, and this rotating cylinder is connected by a steel plate and a graphite seal. The tail end of the rotating drum is fixed with a tangential spring steel plate with a large ring of gear, which is meshed with a pinion below, and the motor drives this pinion through a reducer. At the end of the kiln of this device, there is a section of high-temperature-resistant, wear-resistant kiln guard plate, the kiln mouth guard plate and the cold air sleeve form a sleeve space, and the cold air is blown from the outside to the sleeve to cool the non-working surface of the kiln head guard plate. So that he can work long hours. ”

Several people surrounded Zhang Zhimu while looking at the sketches drawn by Zhang Zhimu and listening to Zhang Zhimu's explanation. Li Yunhe asked: "How long is this rotary cylinder?" ”

"Generally, we need to design it to have a ratio of length to diameter of 1:40. If the diameter of our rotary drum is one meter, it needs to be forty meters long. For the convenience of construction, I will choose one meter five. Then the length should be sixty meters. We used three slewing rollers, each with a 20-metre-long interval between them. Zhang Zhimu said.

"The weight in this rotary cylinder is very large, shouldn't the steel plate be very thick?" Li Di asked.

"Of course, but if it's too thick, it's also heavy, so we can increase the thickness at the slewing tug, and gradually reduce the thickness on both sides of the tug. The supporting rollers can be cast in cast steel for reprocessing. The general thickness is 25 mm, 65 mm under the tugboat, and 38 mm for the outward transition. Actually, we just started to make it a little thicker. "There is also hot air that comes out of the tail end of the inlet, which can be used to preheat the raw meal, which can reduce energy." ”

Wu Shan still saw a little bit of the doorway, "I see! In this way, not only the kiln cannot be stopped, but also our other material preparation and pulverized coal processing need to be continuous and cannot be stopped. In particular, there should be no power outage, otherwise something will happen and the equipment will burn out. There are just so many things we need to make. If there are fewer people, the design can't be done, and the processing can't be processed. ”

Zhang Zhimu said: "Wu Shan is right, we need to take many factors into account when designing. In particular, we need to have a backup power supply, which is especially important because if there is a power outage, our cooling blowers stop. However, if the temperature of the equipment does not go down, the equipment will be burned out. The rotary drum is easy to burn out if it does not rotate. ”

"In addition, we need to be absolutely sure that the incoming cement needs to be transported away or stored after it has cooled. This needs to be taken into account when designing. Wushan said.

"My biggest concern is that even though there are refractory bricks inside the rotary cylinder, the temperature at the three supporting rollers will still be too high, and we need to study it carefully." Li Yunhe said.

"What Li Yunhe said was a difficult point. There is also a difficulty, that is, the sealing between the head and tail ends and the rotary kiln, which requires us to study carefully. Zhang Zhimu said.

Lu Bingyi said: "This is the design of a factory, our first one will be difficult, but I think from our current level of technology, we should be able to overcome it." If we break through this time. The impact on our future construction is simply too great. ”

"Mr. Lu's words are very right, if cement can become a commodity in the future, we can use cement in many places. Some pavements can be built with cement. Zhang Zhimu said, "After we have a complete grasp of the rotary kiln cement technology, we can build a large-scale cement plant with a daily output of several thousand tons." At that time, we could use cement wherever we wanted. Therefore, no matter how much we spend, we must break through this rotary kiln cement production technology. ”

Li Yunhe said: "I see, we need a little time to carry out design and development. We also needed to pull people in and form a team to design the line. Wushan is duty-bound. However, we have already done those drying equipment and pulverizers when we were sintering in the smelting yard, so we can just do it. ”

Takeyama said, "I can go all out to participate. In my kiln factory, as long as there is no accident, those kiln masters can manage it very well. ”

"Your railways and highways, we can start construction first after we have a rough design." Lu Bingyi said, "We will try our best to rush forward in this matter." ”

Zhang Zhimu said: "Also, when they go to the large-scale rotary kiln in the future, there will be a large amount of high-temperature exhaust gas, and you can also build a power plant." ”

"So be it! Let's see how much heat they can get! "Our wires can be pulled through them very quickly." At the most time, it can be synchronized with roads and railways to ensure that there is no delay in use. ”

Everyone basically straightened out the matter of this kiln cement production line from the beginning. For the time being, we can only discuss it here. Zhang Zhimu asked Yang Yulin to change the tea for everyone. Everyone also relaxed a little and began to taste tea slowly.

Zhang Zhimu said: "Everyone, you may not know that if we can break through this rotary kiln technology, its use is not only for the production of cement!" This technology can also be used for sintering in our smelting yard. And we're about to start smelting aluminum. We can use a rotary kiln to smelt aluminium hydroxide into alumina for electrolysis. Otherwise, it is very inconvenient to use other methods, and it is impossible to mass produce. And so on there will be a lot of uses. ”

Li Di said: "Mr. Zhang, I know that the equipment for electrolytic aluminum and electrolytic magnesium at the smelting yard has been prepared, and we will only start trial production when our power plant generates electricity. We'll be generating electricity soon. The reason why it was delayed for so long was because we wanted to let the two generators in the smelting yard and the generator set in the kiln gang run the network. This time we want to form a ten-kilovolt grid. I think this will also improve our security of use and the quality of the grid. ”

Lu Bingyi felt very curious and asked: "How do the generators in your power grid achieve phase synchronization of each generator?" ”

"Yes, our generators are synchronous generators. After our power grid is connected, we first connect the load of our kiln generator to the power grid. The other generators we want to generate can adjust the speed of the steam engine to adjust the speed of the generator rotor to about 50 hertz, close and connect to the grid without adding excitation current, and then increase the excitation current, completely relying on the circulation between the generator and the power grid and the electromagnetic torque generated to quickly draw the generator into synchronization. In this way, after one is connected to the grid, we can connect another generator to the grid, and we can also connect to the grid when our hydropower generators generate electricity in the future. Li Di said that he was already very confident.

Zhang Zhimu said: "This method of grid connection is simple and simple. The current impact of this method at the moment of parallel closing is relatively large, which will cause the grid voltage to drop for a short time, and the end of the motor winding will bear a large electromagnetic force. In the future, if possible, try to adjust the frequency and voltage phase difference of the generator to the grid when it is basically the same, and then let the power grid automatically adjust and synchronize. ”

Li Di said: "We just dare to use this simplest method to do a grid-connected thing, and we will slowly study other grid-connected methods in the future." ”

"The more generators that are connected to the grid in the future, the better the stability of the power grid. The quality of our electricity will also be better. Zhang Zhimu said, "But the future power grid management is also a big problem, and you need to do a lot of things." ”

"Yes! We know that. Li Di said.

Due to this period of time, Wushan has not come over much, so Zhang Zhimu stayed in Wushan for dinner. Lu Bingyi didn't join in the fun with them when he had something. Li Yunhe and Li Di are both people who are willing to be lively, and they also eat together.

"I don't have time to go to dinner with you today. Those people in Zhangjiakou made a little trouble, I want to go over to have a meal with them and persuade them. Yang Yulin said, "I have ordered all the meals in the restaurant for you, you can just go." ”

When he came to the restaurant, Zhang Zhimu saw that Yangchang and several of them also came to the restaurant to prepare for dinner. Seeing Zhang Zhimu and them coming, Yang Chang came over and said, "Mr. Zhang, you also come over for dinner?" We worked overtime tonight and ate with a few brothers sent by Master Qingfengzi. There were two groups of people. I happened to be with them. One is to help us with fluorescent materials, and the other is to help us with tapes. ”

Zhang Zhimu said: "Okay! I think we're in one place. Let's find a larger room to eat together, and it's crowded and lively. ”

"Good! Mr. Zhang. Yangchang is also willing to have a lively time with Zhang Zhimu.

The few people Yangchang wanted to invite were all disciples of Qingfengzi. Now Qingfengzi's disciples are already a very broad concept, and basically those who follow Qingfengzi to engage in chemistry are called Qingfengzi's disciples. When they heard that they were going to have dinner with Zhang Zhimu tonight, they were even more happy, they had never had such an opportunity to have such a close contact with Zhang Zhimu before. I heard Zhang Zhimu's magical story.

But just sitting together, these people were a little nervous. Zhang Zhimu said: "Don't be nervous, those of us who are engaged in science and technology don't need to fear any authority, we just need to fear the truth." ”

The dishes began to serve slowly, and at this time no one moved their chopsticks. This is also the habit brought by Zhang Zhimu, serving three dishes is nagging, and serving four dishes is drinking. Zhang Zhimu asked, "How is your phosphor doing?" ”

A disciple of Qingfengzi said, "We have just begun to demonstrate which phosphor is better to use. Both zinc sulfide and zinc oxide can be excited by electrons. ”

"You should use zinc oxide, because zinc oxide conducts electricity very well. When he is bombarded with electrons, he releases them through the circuit. Zinc sulfide does not conduct electricity, so it is troublesome to deposit a metal film in order to release electrons. When it comes to things in his own professional field, Zhang Zhimu said it more clearly, "You should pay attention to another point, you need to add a little zinc sulfide and zinc chloride to the zinc oxide, which is called doping." With a small amount of sulfur and chloride ions, the luminous efficiency of phosphors will be higher. ”

Zhang Zhimu's words made those people nod their heads. Zhang Zhimu said: "The fluorescence emitted by this material is green. In the future, if you want to emit white light, you need to add a little cadmium sulfide. ”

At this time, four dishes came up. Li Yunhe, who couldn't wait, carried Zhang Zhimu on his back and signaled everyone to stop talking, and the big guys also understood what Li Yunhe meant, so they stopped talking.

Zhang Zhimu saw that the food came up and said, "I don't think I will say anything polite today, let's eat and drink!" ”

"Good!" The crowd responded unanimously. When he picked up the wine cup, he said that he respected Mr. Zhang, and Zhang Zhimu had to take a sip. Everyone saw that Zhang Zhimu was drinking, but they were not welcome, and Li Yunhe took the lead and drank. However, Zhang Zhimu was secretly happy when he saw that Yangchang and them had to work overtime for a few nights, and they were still very restrained. Knowing that these people are very responsible, their knowledge needs to be carried forward, because many things I know how it should be, but I don't know how to achieve it, so I can only point out an idea for them to realize.

After drinking a few glasses of wine, a cassette tape practitioner couldn't help but ask Zhang Zhimu, "Mr. Zhang, we tried it, made nitrocellulose and alcohol-dissolved camphor into an easy-to-process material, extruded it into a narrow rubber strip, and then coated it with magnetic paste to make tape." It's too hard to make, I don't know if the slurry is uniform, and it will be difficult to use it in the future, I don't know if you have any good solutions? ”

"In this matter, as long as you succeed in the experiment, as for the issue of commoditization. We will organize the production people and you to study the mass production process and production equipment together. There's a process to commercialization of any scientific research, but that's something for someone else to do. Zhang Zhimu said.

After Chen Yufeng and Ouyang He finished sending Liu Yun to Kill Hukou, they and their group had to go to the Kill Hukou Branch to have a look, and on the way back, they had to go to Datong and Ningwuguan to have a look. They don't have the leisure to travel in the mountains and rivers, but to see the terrain and landforms there and the environment of the pass again. This time, Qin Peng also went with them. Qin Peng is already very good at these, especially the situation in this area. Since the thorn on Qin Peng's face has been removed, there is no need to be afraid of what anyone will say. In fact, now the kiln people don't have to be afraid of anyone, but it's better not to make a noise. In the words of the previous life, it is to keep a low profile.

Chen Yufeng and Ouyang He were not there, and Yan Boju and Zhang Zhimu were more in the command center when they were fine. But fortunately, after Liu Yun and the others left to kill Hukou, the telegram has been in contact with Yaogang very clearly. Yan Boju said: "With this thing, we should make good use of this thing." We're going to send one of these to Guangzhou as soon as possible. I don't know if they can get to Nanyang Lu Qi and Fan Song. If only they could get there. ”

Zhang Zhimu said: "I think it should be accessible, and in the future, we will build a high-power radio station in Yaogang, and then there will be no problem." Because this thing communicates through the reflection of the sky. ”

Zhang Zhimu and Ouyang He were talking, and the communications staff officer sent a telegram, saying: "There is a situation, the troops out of the customs are calling!" ”

There was nothing before, and the telegrams they sent back were very simple, that is, to contact them in order to preserve, and they were all "Everything is safe!" "Everything works!"

I didn't expect there to be a situation this time, Zhang Zhimu took the telegram, and Yan Boju's little eyes widened.

The telegram read: "Command Center: Our department has repeatedly spotted unknown persons in front of and behind our team, coming to investigate. According to Prince Tori, there shouldn't be anyone in this area, as his tribe is far from here. The tribes besieging them would not have come here easily. And the people who came were very mysterious, and we sent people to follow them, but we couldn't catch up at all. Prince Tory said that the horse they were riding seemed to be a thousand miles horse, otherwise they would not have such speed. The problem is that the group of people who came here were riding such horses, which is unusual. We will be mindful of their movements and act cautiously. ”

Zhang Zhimu also felt very strange when he read the telegram.

Yan Boju said: "Only when the Hequ horse freezes in winter, can the dragon horse on the island in the middle of Qinghai Lake mate with the dragon horse on the island to give birth to a thousand miles of horses." That can't all of them ride a thousand miles of horses! It's really grandma's, Lao Tzu can still confuse the horse thing! ”

Zhang Zhimu ordered: "Liu Yun, I have received the call!"

Don't send men to chase you too far, be on your guard, and be ready for battle. People who can have so many good horses and are interested in you must not be ordinary people. Be careful, and when camping at night, be sure to take precautions. Please stay in touch!

Zhang Zhimu

”

Liu Yun and the others were going well, but when they found that there were mysterious people quietly probing them, Liu Yunxin began to mumble a little. He's not afraid of who he's fighting, but he's annoyed that he can't figure out who his opponent is and what he's going to do?

These people who spy on them are all detected with the naked eye. Liu Yun: They had already seen them with binoculars.

Li Kui suddenly said: "Let's not be fooled by them, they deliberately made us panic so that our army could panic." Isn't it a little strange that they can come up with such a good war horse, and come out to investigate? ”

Prince Tori also said: "Such horses are rarely seen in the grassland, and they should be well hidden from ordinary people." Won't be used to scout for enemy situations. ”

"There is another explanation, that is, these people are not ordinary Tanma, they are people with a certain status." Li Jing analyzed, "And these people are very confident in their martial arts, otherwise they wouldn't come to investigate alone." ”

Liu Yun said: "What Li Jing said is very likely. But we don't have to worry about them now, I guess they really have ill will do it to us when we camp at night. Otherwise, if they had the absolute strength to deal with us, they would have surrounded us a long time ago. ”

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Five-line scores, oscillating circuits, caesarean sections. Guo Shoujing made alloy cannons, and Guan Hanqing created "Journey to the West". --Progress of "Memories of the Southern Song Dynasty".