A few days later.

When Mo Mo came to Caigu, he didn't know what the quality of the first batch of refractory bricks burned by the engineering team was.

Mo Mo rode to the brick cellar, it was already half past eight in the morning local time, and the engineering team had officially gone to work.

Mo Mo arrived, everyone knew that the young master was looking for Fang Shi, and after a few minutes, Fang Shi quickly came, standing respectfully beside Mo Mo, waiting for Mo Mo's work instructions.

The two walked one after the other to the inspection site where the refractory bricks were piled up.

Mo Mo looked at the piles of refractory bricks in front of him, and the refractory bricks that passed the inspection were stacked neatly, more than a meter high, and the number of unqualified products was even higher, and they were piled up on the other side.

"Uncle Fang, what is the pass rate of refractory bricks?" Mo Mo asked with concern.

"After the appearance inspection, according to the standard requirements given by the young master, the pass rate of the first furnace is only 2o%. Fang Shi picked up the pen and recorded how many bricks they had inspected in the past few days, and how many were qualified products.

Refractory bricks need to be inspected, mainly size, porosity, crack length limit, lack of edges, lack of angle depth, distortion and other parameters of the appearance of the inspection, according to the normal steps, is the appearance of the inspection qualified, but also need to carry out the detection of compressive strength and refractory temperature, but the engineering team does not have professional inspection equipment, can not measure.

"So low!" Mo Mo didn't expect that the pass rate of the first furnace was only 2o%, which was pitiful, and it was estimated that if it went through pressure tests and fire resistance tests, the pass rate would be even lower.

According to the experience of the earth's brick burners, they should be able to achieve a pass rate of 3o% for the first time when they burn bricks in a kiln.

It seems that his engineering team burned bricks for the first time, no experience, no matter how good the design drawings he gave, there are still some gaps between the kiln built and the drawing standards, and the proportion of various materials of clay bricks is still not very reasonable.

"I'm sorry, young master, for disappointing you. Fang Shi was also very helpless, he was worried about him these days, he had insomnia for two nights, he was really afraid of being punished by the young master. In this way, the young master is indeed dissatisfied with this pass rate.

Fangshi still stubbornly explained the reason for its existence, "This brick is mainly cracked, we are also looking for the reason, I feel that the viscosity of the brick is not enough, and now the second furnace brick is burning, and it will be out of the kiln tomorrow, I don't know what the pass rate of the second furnace is." ”

Mo Mo squatted down, picked up a brick that passed the inspection and let the system test it, and learned that the test results could also be used as bricks for blast furnaces, and then a few bricks were sampled, and the results were all qualified, and it was considered that the brick burning did not fail.

Mo Mo stood up, patted the ash on his hands, and encouraged Fang Shi: "Uncle Fang, it's okay, the pass rate is a little lower than the expected goal, but it's okay." Everyone has the experience of failure, not to mention that we are burning bricks for the first time, and it can be regarded as a success, you don't have to feel guilty.

If you fail, you must know how to find the reason, this is the most important thing, you don't have to have psychological pressure. ”

Mo Mo was not satisfied with the pass rate, mainly because he felt that he had the technology and the help of the system, and predicted that the pass rate should reach the standard of 35%, but he thought too idealistic. The equipment is insufficient, the workers are inexperienced, even if there is technical guidance, Mo Mo himself has no experience, he is guided according to the instructions of the system, and the final pass rate is not high.

It seems that the Industrial Revolution was not so easy to carry out.

"Yes, Fang Shi remembers the young master's teachings!" Fang Shi said with a slight bow.

Brick burning is underway, and cement production is proceeding as planned.

Next, Mo Mo and Fang Shi came to the cement production area.

The cement project site is divided into several areas, one is a stone yard of more than ten acres of land, and now the engineering team uses animal vehicles to continuously transport limestone from other places, ten animal vehicles, and a handling team of 20 people can carry 100 cubic meters of limestone to the material yard every day.

They had no good means to break up large stones, so they had to manually hammer them with hammers to small stones the size of their fingers.

"Uncle Fang, isn't the crusher made by the blacksmith room ready yet?" Mo Mo watched the workers holding the big hammer and brute force to break the stones, it was really a little painful, if it was replaced by an earthling with low combat effectiveness, it would be more troublesome to break the limestone.

However, the self-made crusher can only grind small stones, and large stones still need to be hammered and broken by brute force, and it takes a lot of mechanical energy to crush large stones, and the water wheel that needs to be made is too huge, so Mo Mo temporarily canceled the big stone crusher.

But if there is a small stone crusher, the grinding efficiency is much faster.

"Not yet, it will take two or three days. The powered waterwheel also has to wait a few days for it to be installed. Fang Shi shook his head and replied, he had watched a lot of videos of cement making, and probably understood the role of cement, and also understood that the young master attached so much importance to it, but he had never seen real cement.

The most critical equipment for cement production, including limestone crusher, batching station, preheating furnace, calciner, cement rotary kiln, cold motor and ball mill, etc., cannot be made according to the requirements of the standard equipment of the cement plant.

Without limestone crushers and ball mills, it can be crushed by water wheel power or manually, and the batching station can only rely on manpower, which is easy to do.

The most critical calcination equipment, with refractory brick building preheating furnace and calciner, is not a problem, the difficulty is not automated.

The production of cement rotary kiln is very troublesome, the blacksmith can only cast the rotary cylinder in the sand mold, each section of the iron cylinder is two meters long, the refractory bricks are penetrated in the cylinder, and then the rotary cylinders are connected to form a simple cement rotary kiln.

Caigu can't make a cold engine, after the calcined cement passes through the cement rotary kiln, it is transferred to the cold motor according to the normal process to speed up the cooling of high-temperature cooked cement, but Caigu does not have this equipment, so it can only be cooled naturally.

The best cooling method is to cool the outer wall of the rotary kiln with water when the cooked cement passes through the cement rotary kiln, so that the cooked cement in the rotary kiln can accelerate the cooling.

Mo Mo watched while walking, and communicated with Fang Shi, several technical leaders of cement production, seeing the arrival of the young master, also listened carefully to Mo Mo's explanation, and wrote down the key points.

"Uncle Fang, the process of coke production should also be accelerated. Mo Mo walked around, had a general understanding, and Fang Shi ordered.

Fang Shi replied: "Young master, a refractory brick kiln for making coke is being built now, and it is estimated that it will be completed in next month." ”

Firewood and charcoal are not suitable for calciners and blast furnaces due to their low temperature, low calorific value, and excessive burning.

The iron-making blast furnace uses coke instead of charcoal, and the calciner can use anthracite, in order to make the operation of the high-temperature combustion furnace achieve better technical and economic indicators.

"Well, it's not very urgent, just make the coke before the blast furnace is built. We can use anthracite as fuel in the calciner for burning cement, but the anthracite is too strong, and the calciner may be burned out, and an appropriate amount of coal and soil will be mixed to reduce the fire intensity. Mo Mo said again.

Coal is the most abundant and widely distributed fossil fuel on the planet. Similarly, there is also open-pit coal in Caigu, which is rich in reserves and of good grade.

There is high-quality coal near the iron ore area, the coal seam is stable, the burial is shallow, and it can be mined in the open pit, covering an area of about 100 square kilometers, and the system estimates the reserves of no less than 100 million tons.

Coal has several types of coal, such as lignite, bituminous coal, anthracite, and semi-anthracite.

Anthracite can be used to make gas or directly used as fuel, the ignition point is high, not easy to ignite, but the heat is high, the fire is slow when it is just burned, the fire is relatively large after the fire comes up, the fire is strong, the flame is short, the smoke is less, the burning time is long, and the calciner of Caigu plans to use anthracite as fuel.

Bituminous coal is used in coking, coal blending, power boilers and gasification industries, and it burns quickly, has a long flame, has a large amount of black smoke, and has a long burning time. Coke is made of bituminous coal, and coke is needed for blast furnace steelmaking.

Coke is the final product of bituminous coal heated to 95o-1o5oC under the condition of air isolation, and then goes through the stages of drying, pyrolysis, melting, bonding, solidification, and shrinkage. To put it simply, coke is the product of bituminous coal after the high temperature of the air is isolated.

Coke seems to be easy to refine, but in fact it is more complicated, according to the conventional equipment is to need a retort or carbonization furnace, Qinglong Group can only build a refractory brick kiln and some auxiliary equipment as a simple retort furnace.

Mo Mo communicated with Fang Shi, it had been two or three hours since he came to the other world, and he was about to return to Earth to rest, and he didn't know how the production of the transportation tool was going in the carpenter's room.

The transportation of coal, limestone and iron ore is a major problem, and Qinglong Group needs new means of transportation.

……

Color Valley, blacksmith's house.

Several blacksmiths gathered to discuss the creation of new tools, and several drawings showed a structural diagram of a pulley block and another a diagram of a bucket truck. These drawings are all Li Gang, and they have decomposed and repainted the structure after watching the video.

Those who can enter the technical group are all people who have passed the cultural assessment and have more clever brains.

"Team leader, is this bucket car really so magical? Without a beast car, one person can easily push hundreds of catties of goods. ”

"Yes, if there is that small bucket truck, it will be much more convenient to transport small goods. ”

"I'm curious about that pulley, I used that pulley to lift things, it's really that effortless?"

Li Gang stroked his mustache and said with a smile: "Haven't you already watched the video, this is also the young master's planned project." The ironworks are the first big project of the young master, and with the small bucket truck, it is much more convenient for workers to pull goods, after all, it is inconvenient to use animal carts in many places.

I don't understand the labor-saving principle of the pulley, but when it is made, we will know it after we have used it. Now let's talk about the difficulties of making a bucket truck. ”

The pulley block and bucket truck were the research and production tasks in the plan given by Mo Mo, and the plan only set an approximate completion time, but they wanted to make them as soon as possible.

Among them, the pulley group was designated as a general key project by Mo Mo, Li Gang didn't know the specific role of the pulley group, how to save effort, and they were confused after watching the video.

Li Gang continued: "The main difficulty in the production of the bucket car is the axle of the rotating part of the bucket truck. The second part is difficult to make the wheels of the bucket truck, the first step of the wheel is to make the discus, and the second step is to drill holes. ”

"Team leader, can't the iron shaft and discus be directly melted into molten iron and cast?" a young man said a little depressed, his name is Zhu Ba, he is very clever, he is 28 years old this year, but he likes to have two small whiskers, like a "eight", Mo Mo directly called him Zhu Ba, or Zhu Bajie.

Li Gang They don't know what Zhu Bajie is, but they have learned Chinese and know the character "eight", so everyone likes to follow Mo Mo and call him Zhu Bajie, which is easy to remember.

Li Gang knocked on Zhu Ba next to him, and said solemnly: "The iron shaft can't be cast, the toughness is insufficient, and it is easy to break, the young master's information says that the shaft must be forged, at this point, I think the young master's family has gone through many tests, and there have been conclusions, so don't waste time on it, if you can save trouble, don't the young master know."

The wheel can be cast, but there are many shortcomings, the dimensional accuracy of sand casting is poor, the casting is prone to defects such as sand washing, sand inclusion, porosity, etc., and the metal fluidity is poor, and the thin wall can not be done, and it is easy to be brittle. ”

Zhu Ba said helplessly: "Okay, let's forge the iron shaft." The temperature of the furnace is still a little lower, and we have to find a way to make it higher, or it will be difficult to heat it to 1,200 degrees. ”

The forging temperature must be higher than 9oo degrees Celsius, preferably 12oo degrees Celsius, otherwise the temperature is low and the steel is prone to cracks. However, it is difficult for the furnace temperature of wood charcoal to reach 12oo degrees Celsius, and if coke is used as fuel, the furnace temperature is not a problem.

The furnace currently used in the blacksmith's room is easy to dissipate heat, which is also one of the reasons for the low furnace temperature.

Li Gang nodded in agreement and said: "The engineering team has already made refractory bricks, which can withstand thousands of degrees of calcination, and we can build a semi-closed furnace, and the furnace temperature is higher."

I have already contacted Fangshi, they have some substandard products, we can use them to build a semi-closed furnace, wait for two days, they send someone to build. ”

"In addition, anthracite coal can be used instead of charcoal, which is an existing coal mine in the iron ore area. We didn't think that the black thing could burn before, if it wasn't for the young master's reminder, I wouldn't know. Do you think there is anything else you can do to increase the furnace temperature?"

Zhu Ba scratched his head and said, "Team leader, we have seen the production method of the blast furnace and come up with some ideas to increase the furnace temperature.

The wind we are currently blowing into the furnace is cold, which lowers the furnace temperature. We can get a blower, heat the air first, and then blow the hot air into the furnace, which can definitely raise the furnace. ”

"Good way, why didn't we think of these solutions!" said one of the people in the crowd in surprise.

"Yes, yes, that's a good idea. Li Gang praised.

Zhu Ba smiled and said embarrassedly: "This is all the young master's family's iron-making method, you just didn't notice it when you read the information." ”

"I really want to go to the young master's family to have a look. ”

Li Gang's face changed, and he said solemnly: "Don't think about it, don't talk nonsense about the young master's family outside."

That's the technical problem of the bucket truck, and then we discuss the production of the wheel set, I think there is no difficulty in making this, the structure is simple, and it can be cast directly. ”

After Li Gang finished speaking, he glanced at everyone and asked, "Do you have any questions?"

"No, the pulleys are really easy to do. Everyone shook their heads in agreement.

Li Gang said solemnly: "Today's work will be here, everyone must sign in and strictly abide by the discipline of confidentiality. ”

"Of course!" replied in unison.

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