Foreman Li immediately led several workers to carry the prepared fireproof mud and quickly sealed the slag outlet. Ji Wusheng pulled the whistle fiercely, and the sharp whistle reminded the workers around the blast furnace that something was about to come out of the blast furnace.
There is discharge from the furnace, please stay safe and avoid it.
Several workers carried iron drills and began to stir the bottom of the furnace. As they stirred together, like fireworks, many burning sparks were sprayed from the tap hole, flying in the air. This was the firewood ashes from the bottom of the furnace being blown away.
came out.
Ji Wusheng instructs the workers to stir continuously to continuously discharge the ash. The purpose of discharging the ash is to prevent the ash and slag from mixing together and causing a bottom.
When no more ash was blown out, he told the workers to seal the taphole. Then he started to blow up the wind. The blower made a whistling sound, and the temperature in the workshop was getting higher and higher. Ji Wusheng began to feel sweat dripping from his forehead.
He slipped up and fell down - the thick work clothes hindered the dissipation of heat, but he still stood motionless in front of the stove and observed. From time to time he looked at his watch and counted the time.
"Okay!" Ji Wusheng thought that the heat was almost done and informed Engineer Li, "From now on, you must always pay attention to the position of the furnace line. When the coke layer drops to the specified position, gradually add empty coke. Add some slag -
―I have taught you how much to add every time. If you forget, just check the process manual!”
"I haven't forgotten it!" Engineer Li recited a series of data smoothly.
"Okay, from now on, don't add ore until the morning shift comes tomorrow morning. Wait until I come and then start adding. Coke must be added continuously! Keep the furnace temperature!"
The second baking time takes about 24 hours. Only when the temperature of the entire blast furnace reaches a sufficient temperature can we start adding iron ore in small batches. All this is to ensure the temperature of the furnace - in blast furnace smelting, the furnace temperature
Maintenance is an important issue. Insufficient furnace temperature not only affects the tapping rate, but also causes many blast furnace failures, which will eventually require the furnace to be shut down for overhaul.
Ji Wusheng went back and quickly took the time to take a nap. When he woke up, it happened to be night, and the mid-shift workers had already gone to bed. He checked the handover records of the two shifts, and then used a steel drill to drive in the exploration hole to observe the burning status of the coke.
and furnace wall temperature.
"Continue to add coke in small batches and supply air." Ji Wusheng felt that the heat was still a little low, so he decided to wait until the morning of the 7th to start adding ore.
At noon on February 7, following Ji Wusheng's order, the first batch of iron ore powder and slag-making materials were finally put into the blast furnace, and formal pig iron smelting began. Ji Wusheng was more nervous than the workers - they were
He did it strictly according to the technical information and his own experience, but no one knows whether this large-scale knock-off product, which is made up of knock-off goods, can withstand the test and operate normally. Ji Wusheng knows the success or failure of the blast furnace.
How fast can you climb the technology tree?
On February 8, the blast furnace finally released the first batch of molten iron. The main ditch was made of sand and gravel and filled with yellow sand. The casting bed was made of pig iron molds. After the first batch of pig iron ingots came out, Ji Wusheng ordered someone to take the car and bring the iron.
The bricks were sent to Bairen's chemical laboratory for testing of ingredients.
The analyzed results were quickly fed back to the steel plant through wired telegrams. The quality of the pig iron was very good, and the proportion of phosphorus and sulfur that affected the quality of the pig iron was extremely low, far exceeding the various scrap iron and pig iron they obtained from the mainland. It was of high quality.
The combination of the two great artifacts of iron ore and modern blast furnace smelting has created such high-quality pig iron.
Ji Wusheng's face lit up: "Great! With high-quality pig iron, it will be easier to make good steel."
After the molten iron is discharged, the first slag discharge begins. The steel slag is discharged into a large pool. The water in the pool is river water sent from the water supply plant and subjected to simple sedimentation treatment. The cooled steel slag is the material for making cement. As for the water being
The cooling water heated by the steel slag is piped out to utilize the waste heat.
"From now on, iron will come out every two hours! Slag will come out every 15 minutes!" Ji Wusheng ordered. He collected a sample of the steel slag that was cooled for the first time and gave it to a clerk to quickly send to Bairen for composition.
Laboratory testing is carried out in order to adjust the composition of slag-making materials at any time.
"If we don't have a laboratory, we have to run to death." Ji Wusheng sighed as he watched the excited clerk trot out with the sample can. Ma Niao's land transportation was only highways, and the speed of walking and riding was very fast.
Too slow. In order to deliver items quickly, the Planning Institute allocated a motorcycle to Ma Niao Industrial Zone. When items need to be delivered urgently, the motorcycle will be manned.
The composition of the slag was soon analyzed, and the steel plant was photographed using wired telegrams. The composition was roughly within the range of Ji Wusheng's predictions - the formula and figures for the feed were accurately calculated by him, and were the best for modern blast furnaces for more than a hundred years.
Summary of ironmaking experience. Now Ji Wusheng is confident enough that the blast furnace can produce iron stably in the long term. But he still dare not relax. He is in the workshop 24 hours a day. When he feels sleepy, he takes a nap in the office, and then gets up again.
Looking at the condition of the furnace - he did not dare to relax at all among his naturalized migrant workers. After all, these people had only been working as real industrial workers for only one and a half years. Bad habits and thinking still dominated the blast furnace.
There are a lot of new workers among the workers, and there are few veteran workers. If you don't keep a close eye on yourself, it's more likely that something will happen.
Under his day and night monitoring, the operation of the blast furnace was completely normal after 48 hours. Ji Wusheng calculated based on the input iron ore and coke figures, the blast furnace conversion rate was about 0.79 - this level is not high, modern blast furnaces
Generally, it can reach a level of 1. However, he is not worried. As long as he continues to improve the feed ratio and slag making process, he is confident that the conversion rate will reach about 0.90. Even at the level of 0.79, the daily pig iron production will be far more than 50
tons. Blast furnace capacity is much higher than expected.
In order to celebrate the official commissioning of the No. 1 blast furnace, the Senate ordered additional rations for the students at Yerba Buena, including the students' favorite fruit candies. Years later, the "children of Yerba Buena" who had grown into the backbone of the empire would also
I often recall the good days of receiving "special rations" from time to time. Whenever additional rations were issued, students would stand up and cheer "Long Live" in classrooms, dormitories and playgrounds - everyone knew that this was the correct, glorious and honorable act in the Senate.
Under the great leadership, the empire takes new steps forward.
At the same time, on February 9, a set of red headlines were published on both the internal and external pages of the "Lingao Times". Needless to say, the naturalized people, and the indigenous people who have had more contact with the elders also knew that a red headline appeared in the newspaper.
The title shows that something big has happened to the elders - most of it is a happy event. The members of the county advisory bureau cannot understand the "Newspeak" articles in the newspaper, but the county advisory bureau has a full-time liaison "
"Nv Kun", every time the county advisory bureau meets, she will usually explain the contents of newspapers and documents. After everyone heard Tang Tang say that this is a large furnace that can produce more than 100,000 kilograms of iron, although they didn't know what the details were.
However, from the solemn deeds of the elders, I still understood that these 20 things were of great significance. I immediately wrote a "congratulatory letter" in the name of the County Advisory Bureau, wrote it on big red paper, and sent it to the east gate.
The city went to the city. Zhang Youfu also asked his subordinates to quickly buy firecrackers and set them off in front of the county consultation bureau.
Wu De closed the window - the sound of firecrackers outside was extremely loud, disturbing the executive committee's regular working meeting.
This executive working meeting was held at his request, and the topic was to solve the thermal coal supply problem. Of course, the so-called thermal coal supply problem is actually Hongji's problem.
"...Well, the situation of coal supply is already here." Wu De said, "I think everyone understands the current situation. The channels for coal have not increased, but the number of users has increased a lot. If we can't solve it once and for all,
The coal issue may pose a problem to maintaining the operation of the industrial system."
As if to verify his statement, a warning whistle sounded outside to remind the elders present how many boilers were burning in Lingao and how many steam engines were working tirelessly to provide Lingao with industrialization.
There is an endless supply of powerful power. And there are many boilers in Sanya, Hong Kong, and Leizhou waiting for high-quality coal to fill their huge appetites.
"It is unrealistic to expect Guo Yi to restore the coal transportation channel for us immediately - besides, the Pearl River Delta is not close to Lingao. The most he can do is solve Hong Kong's thermal coal problem immediately. The Zhanjiang coal shipped from Leizhou is now our thermal coal
The main force, this is currently the most stable supply of thermal coal."
He did not include the Jiazi Coal Mine in Qiongshan and the Nanbao Coal Mine in Lingao into the statistical caliber of thermal coal. The former is a coking coal exclusively used by the Ministry of Chemical Industry and the Ministry of Metallurgy, while the calorific value of the latter is too low and can only be used as fertilizer.
.
"Are Danzhou's coal mines valuable for development? Remember where there are oil sands mines?"
"Yes, there is Changpo Coal Mine in Danzhou, which is one of the larger coal mines in Hainan Island." Bai Guoshi, who came to the meeting on behalf of the exploration department, said, "But it is buried deep and requires a large initial investment. The quality of the coal is not good.
Ideal - Changpo actually belongs to the same mining belt as Nanbao's coal mine."
As for the Danzhou oil ore sands, they are buried very deep and are more difficult to extract. Furthermore, refining equipment is required to extract them. The demand for fuel oil is not large at the moment, so increasing this investment is not worth the gain.
"Ade, we understand what you mean!" Ma Qianxu said, "We will directly intervene in the development of Hongji, instead of relying on piecemeal purchases from Vietnam trading companies like now."
Wu De nodded: "Yes, that's what I mean. Now is the time to directly intervene in Hongji."