Rebirth of Business Domination of the Two Worlds

Chapter 166 Pass Rate of Refractory Brick Manufacturing ([-]-character chapter)
a few days later.

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

Mo Mo came to the brick cellar on horseback. It was already 08:30 a.m. local time, and the engineering team had officially started work.

When Mo Mo arrived, everyone knew that the young master wanted to find Fang Shi, so someone notified him. After a few minutes, Fang Shi came quickly, standing beside Mo Mo respectfully, waiting for Mo Mo's work instructions.

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

Mo Mo looked at the piles of refractory bricks in front of him. The refractory bricks that passed the inspection were piled up neatly, more than one meter high, and there were more unqualified ones, which were piled up on the other side.

"Uncle Fang, what is the pass rate of the 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 batch is only 20%." Fang Shi picked up a pen and wrote down how many bricks they inspected in the past few days, and how many qualified ones.

Refractory bricks need to be inspected, mainly the appearance inspection of parameters such as size, porosity, crack length limit, missing edge, depth of missing corner, twisting degree, etc. According to the normal procedure, after the appearance inspection is passed, the compressive strength and The detection of refractory temperature, but the engineering team does not have professional inspection equipment, so it cannot be measured.

"It's so low!" Mo Mo didn't expect that the pass rate of the first batch of products was only 20%, which is pitifully low. It is estimated that if the pressure test and fire resistance test are passed again, the pass rate will be even lower.

According to the experience of brick-burning workers on the earth, their first-time brick-fired bricks should be able to achieve a pass rate of 30%.

It seems that my engineering team has no experience in firing bricks for the first time. No matter how good the design drawings he gave, the kiln built still has some gaps from the drawing standards. The proportions of various materials for clay bricks are still unreasonable. Due to various factors, it is reasonable for them to have such a low qualification rate for firing the first furnace of bricks.

"I'm sorry, young master, I let you down." Fang Shi was also very helpless, he was so worried these days, he had insomnia for two nights, he was really afraid of being punished by the young master.From this point of view, the young master is indeed dissatisfied with the pass rate.

Fang Shi still bit the bullet and explained the reason for the existence, "This brick is mainly cracked. We are also looking for the reason. I feel that the viscosity of the brick is not enough. Now I am firing the second furnace of bricks, and it will be out of the kiln tomorrow. I don't know the second one. What is the pass rate of the furnace?"

Mo Mo squatted down, picked up a brick that passed the inspection, and let the system test it. He learned that the test result could be used as a brick for a blast furnace.

Mo Mo stood up, patted the ashes on his hands, and encouraged Fang Shi: "Uncle Fang, it's okay. The passing rate is a little lower than the expected goal, but it's still passable. Everyone has failed experiences, let alone us. Burning bricks once is considered a success, so 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 is dissatisfied with the pass rate. He mainly thinks that he has the technology and the help of the system. He predicts that the pass rate should reach 35% of the standard, but he is too idealistic.Insufficient equipment, inexperienced workers, even if there is technical guidance, Mo Mo himself has no experience, and he always follows the instructions of the system. It is normal that the final pass rate is not high.

It seems that the industrial revolution is not so easy to carry out.

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

Brick firing is going on and cement making is going on as planned.

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

The cement project site is divided into several areas. The first is a stone yard with a size of more than ten mu. Now the engineering team uses animal carts to continuously transport limestone from other places. Ten animal carts and a team of 20 people can carry it every day. One hundred cubic limestone to the stockyard.

They don't have a good way to break the big rocks, so they can only use manual hammers to break the big rocks down to finger-sized small rocks.

"Uncle Fang, isn't the crusher made by the blacksmith room ready yet?" Mo Mo watched the workers break the rocks with a sledgehammer, and it really hurts. trouble.

However, the self-made crusher can only grind small stones. Large stones still need manpower to break them with brute force. Crushing large stones requires a lot of mechanical energy. The waterwheel that needs to be made is too large, so Mo Mo temporarily canceled the large stones. Crusher.

But if there is a small stone crusher, the work efficiency of grinding will be much faster.

"Not yet, it will probably take two or three days. The power water truck will have to wait a few days before it can be installed." Fang Shi shook his head and replied. He had watched a lot of videos made of cement, and he probably understood the role of cement, and also understood the role of the young master. Pay attention, but he has not seen real cement.

The most critical equipment for cement production, including limestone crusher, batching station, preheating furnace, calciner, cement rotary kiln, cold engine and ball mill, etc., Momo can't make it according to the requirements of the standard equipment of the cement factory .

Without limestone crushers and ball mills, water truck power crushing or manual crushing can be used, and the batching station can only rely on manpower, which is easy to handle.

The most critical calcining equipment is not a problem with refractory brick building preheating furnaces and calcining furnaces. The difficulty is that they cannot be automated.

The production of the cement rotary kiln is very troublesome. The blacksmith can only sand-cast the rotary cylinder. Each section of the iron cylinder is two meters long. The cylinder is filled with refractory bricks, 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 engine according to the normal process to speed up the cooling of the high-temperature cooked cement. However, Caigu does not have this equipment and 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. In this way, the cooked cement in the rotary kiln can be cooled faster.

Mo Mo walked and watched, and communicated with Fang Shi at the same time. The technical directors of the cement production saw the young master coming, and listened carefully to Mo Mo's explanation, and wrote down the key points.

"Uncle Fang, the process of making coke needs to be accelerated." Mo Mo walked around, and after gaining a general understanding, Fang Shi ordered.

Fang Shi replied: "Master, the refractory brick kiln for making coke is currently being built, and it is estimated that it will be completed in the next month."

Firewood and charcoal have low temperature, low calorific value, and fast combustion, so they are not suitable as fuel for calciners and blast furnaces.

Coke is used instead of charcoal in ironmaking blast furnaces, and anthracite can be used in calcination furnaces, in order to achieve better technical and economic indicators for the operation of high-temperature combustion furnaces.

"Well, it's not too urgent. Before the blast furnace is built, it's enough to make the coke. We can use anthracite as fuel for the calciner for burning cement, but the anthracite is too powerful, and it may burn out the calciner. Add an appropriate amount of coal and soil to burn to reduce the intensity of the fire." Mo Mo said again.

Coal is the most abundant and widely distributed fossil fuel on earth.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, buried shallow, and can be mined in the open pit. The area is about 1 square kilometers, and the system estimates that the reserves are no less than [-] million tons.

There are several types of coal such as lignite, bituminous coal, anthracite, and semi-anthracite.

Anthracite can be used to make gas or directly as a fuel. It has a high ignition point and is not easy to catch fire. Valley's calciner plans to use anthracite as fuel.

Bituminous coal is used in coking, coal blending, power boilers and gasification industries. It burns quickly, has a long flame, a lot of black smoke, and takes a long time to burn.Coke is made from bituminous coal, and coke is needed for blast furnace steelmaking.

Coke is the final product of bituminous coal heated to 950-1050°C in the absence of air, and then dried, pyrolyzed, melted, bonded, solidified, and shrunk.Simply put, coke is the product of bituminous coal after being isolated from the high temperature of the air.

Coke seems to be easy to refine, but in fact it is more complicated. Conventional equipment requires a retort furnace 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 has been two or three hours since he came to the foreign world, and he is going back to the earth to rest. He doesn't know how the production of transportation tools in the carpenter's room is progressing.

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

……

Colorful Valley, blacksmith room.

Several blacksmiths and skilled workers gathered to discuss the production of new tools. Several drawings showed the structure diagram of the pulley block, and another drawing showed the structure diagram of the bucket cart.These drawings are all decomposed and drawn by Li Gang after watching the video.

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

"Team leader, how amazing is this cart? Without a beast cart, one person can easily push hundreds of catties of goods."

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

"I'm curious about that block of pulleys. Is it really so labor-saving to use that block of pulleys to lift things?"

Li Gang stroked his mustache and said with a smile: "Didn't you already watch the video? This is also the master's planned project. The ironworks is the first big project of the master. With a small truck, it is convenient for workers to pull goods." Too much, after all, it is not convenient to use animal carts in many places.

I also don't understand the labor-saving principle of the pulley block. When it is built, we will know it after using it.Now let's talk about the difficulty of making the bucket cart. "

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

Among them, the pulley block was designated as a general key project by Mo Mo. Li Gang didn't know the specific function of the pulley block and how it could save effort. They were also confused after watching the video.

Li Gang went on to say: "The main difficulty in the production of the bucket truck is the wheel axle of the rotating part of the bucket truck. We can make the shaft blank first, and let the machine room process it into an iron shaft. This is a relatively heavy workload. The second part is difficult to make. It is the wheel of the bucket truck, the first step of the wheel is to make the discus, and the second step is to drill the hole."

"Group leader, can't the iron shaft and the discus be cast directly by melting molten iron?" A young man said with some gloom. His name is Zhu Ba, he is very smart, he is 28 years old this year, but he likes to grow a pair of mustaches. Like the word "eight", Mo Mo directly called him Zhu Ba, or Zhu Bajie.

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

Li Gang knocked Zhu Ba next to him, and said solemnly: "Iron shafts cannot be cast, they are not tough enough, and they are easy to break. According to the young master's information, the shaft must be forged. On this point, I think the young master's family has After many experiments, we have come to a conclusion. Don't waste your time on it. If it saves trouble, doesn't the young master know about it?

Wheels can be cast, but there are many disadvantages. Sand casting has poor dimensional accuracy, and castings are prone to defects such as sand washing, sand inclusions, and pores. "

Zhu Ba said helplessly: "Okay, let's forge the iron shaft. The temperature of the furnace is still low, so we have to find a way to make it higher, or it will be difficult to heat it to [-] degrees."

Forging must make the steel temperature higher than 900 degrees Celsius, preferably 1200 degrees Celsius, otherwise the temperature is low, and the steel is prone to cracks.However, it is difficult for the furnace temperature of charcoal to reach 1200 degrees Celsius. If coke is used as fuel, the furnace temperature is not a problem.

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

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

I have already contacted Fangshi, they have some unqualified products, we can use them to build a semi-closed furnace, after two days, they will send someone to build it. "

"In addition, anthracite can also be used instead of charcoal. There are coal mines found in the iron mining area. We never thought that the black thing could burn when we were blacksmithing. If the young master reminded me, I wouldn't know. Think about it. Is there anything I can do to increase the furnace temperature?"

Zhu Ba scratched his head and said: "Leader, we have seen the manufacturing method of blast furnaces, and came up with some ideas to increase the furnace temperature.

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

"Good way, why didn't we think of these ways!" A person in the crowd said in surprise.

"Indeed, it's a good idea." Li Gang praised.

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

"I really want to visit the young master's family."

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

This is the technical problem of the bucket truck. Next, let’s discuss the production of the pulley block. I think there is no difficulty in making this. The structure is simple and can be cast directly. "

After Li Gang finished speaking, he scanned the crowd and asked, "Do you have any questions?"

"No, the pulley is really easy to make." Everyone shook their heads in agreement.

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

"Of course!" Everyone replied in unison.

(End of this chapter)