Mo Mo turned to Li Gang and asked, "Uncle Li, did you find the clay you were looking for some time ago?"

"Young master, I've found a few clay lands, but I don't know if Fu doesn't meet your requirements. Li Gang replied, wrote down the location of the clay he had recorded on a piece of paper, and handed it to Mo Mo to look at.

The mineral composition of clay bricks is mainly kaolin. The firing process of clay bricks is mainly the process of kaolinite calcination at 1300~1400 °C, and the continuous decomposition of water loss to form mullite (3Al2O3·2SiO2) crystallization.

Clay bricks are also divided into many kinds, among which the refractory bricks used for masonry blast furnace are alumina clay bricks, the alumina content index is not less than 42, the softening temperature is not less than 1450 °C, and the actual refractory temperature is as high as 1690~1730 °C, so it is enough for ironmaking furnaces.

Mo Mo probably looked at the record, then handed it back to him, and said praiseworthily: "Well, yes, now the engineering construction department is responsible for making refractory bricks, and Uncle Fang, you are in charge of this." Tutorials such as digging clay, digging brick cellars, and burning refractory bricks are all available on mobile phones. ”

"Okay, I have learned the process of making clay bricks according to your plan, and I will organize and arrange the work as soon as I finish the meeting. ”

Mo Mo was afraid that he would not be able to remember and understand it well, so he took out the information of the clay bricks, unfolded the drawings, and communicated with the ashlar little by little.

For example, the mold of refractory bricks, the number of clay bricks, the location and size of the brick cellar, the handling tools, the production process, etc., all need to be determined.

Mo Mo has the help of the system to avoid many detours, what he is afraid of is the misinterpretation of the square stone, and even misunderstanding the production process, now he has time to communicate with him, carry out technical disclosure, and clarify the key points of the technology, so that the progress of the project will be faster, and they will not go in the wrong direction.

As for the details, Mo Mo didn't need to make it clear to him, and he didn't have the time.

That's what Mo Mo does, responsible for technical drawings and requirements, technical disclosure, key process points, and then the final acceptance. The supervisor is in charge of everything, and he does not have to do everything.

The next morning, the person in charge of finding the clay brought back several samples, and after Mo Mo tested them, he found that two were suitable for making blast furnace refractory bricks, that is, there were two places.

One of them, 15 miles southwest of the residential area, is also the most suitable for making blast furnace clay bricks recently.

The brick cellar is easy to make, find a tall, solid earth, not easy to collapse hillside as a brick cellar site, and then dig holes and make chimneys.

In order to prevent contamination of the residential area, the brick cellar was erected downstream of the river, about 10 km south of the residential area.

Mo Mo rarely had leisure and leisure, and went to the scene to watch the digging of holes and the construction of brick cellars.

The personnel responsible for digging the hole are 10 personnel of the Flying Tigers and 10 workers of the engineering construction team, which are regarded as military engineering training tasks, and the Qinglong Group does not have any advanced tools. When you come across a place where the soil is prone to collapse, build solid soil and build a stone support.

In addition, some people use molds to make clay bricks in the clay production area, and the bricks are dried, and then transported to the vicinity of the brick cellars by animal carts.

There are also some people who pull firewood for burning bricks.

"Young master, if we dig dirty, don't go near the brick cellar. Fang Shi, who was in charge of the command, saw Mo Mo squatting outside the brick cellar, just where the dirt was piled up, the dust was flying, and he was covered with a layer of dust.

"It's okay, you're busy with you, don't worry about me. Mo Mo looked at the excavated soil, it was really dry, turned to Fangshi and reminded,

"By the way, the soil is dry, the hole is dusty, you let everyone wet the towel around the nose and mouth and then dig a hole, or even spray water on the soil, otherwise the dust enters the lungs, easy to get dust disease, in the future, you must pay attention to protect the body when you encounter this situation, don't underestimate these dust, accumulate small into a lot of disease, I don't have a miracle cure." ”

"Okay. Fang Shi couldn't resist Mo Mo, nodded and left, he had just been in the cave for a while, he was covered with dust, his nostrils were black, and he also felt uncomfortable.

The strength of the people is great, and all of them are strong, the brick cellar that needs to be dug is not very large, the cellar space has more than 1,000 cubic meters, and the next day, the brick cellar will be done.

The bricks take a long time to dry, Mo Mo is not in a hurry, let people carry them over, and dry them directly with firewood, which is also the fastest way, which is just to waste firewood.

For Mo Mo, cost is not a problem, the key is to grasp the schedule and race against time to meet the deadline.

On the third day, we are ready to start burning bricks.

The bricks are stacked in the brick kiln according to certain requirements, the kiln door is sealed with bricks and mud, and then the fire around the brick kiln is ignited.

It takes three or four days to burn bricks, and there are special people to keep an eye on them, and Mo Mo also leaves the brick kiln.

While making clay bricks, the cement plant is also preparing to start construction.

The main raw materials for the manufacture of cement are limestone (80%~90%, mass fraction, the same below), clay (10%~15%) and iron ore powder (1%~2%). In order to control the setting rate), gypsum of less than 3% is also added to the clinker.

Limestone is calcium carbonate CaCO3, marble, granite and other main components of stone, color valley everywhere. There is no crushing equipment in Caigu, marble, granite hardness is too high, it is best to find limestone that is easy to break as limestone raw materials.

Gypsum is added to cement clinker in order to delay the hardening rate of cement, penetrate sufficiently, make cement evenly distributed, and make the gel more and stronger.

The process of making cement is much more complicated than making clay bricks, especially when there is no electrical equipment.

People who know a little about the cement production process will talk about "two grinding and one burning" when it comes to cement production, which are: raw meal preparation, clinker calcination, and cement grinding.

On this morning, Mo Mo took his mobile phone to communicate with Fang Shi and several people about cement production.

"Young master, is this cement really so magical? It can firmly cement sand, stone and other materials together. Wang Dong, the deputy leader of the engineering construction team, asked curiously, if you really want to do a lot of stone modeling like in the video, the dam they intercepted will not leak.

"Well, it's not magical, you'll know when it's produced. Mo Mo said with a faint smile.

"Young master, you just said that the process of making cement is the process of chemical reaction, so what is a chemical reaction?"

Mo Mo was silent, but still patiently explained: "Well, what we usually see accompanied by luminescence, heat, discoloration, and the formation of precipitates may have chemical reactions.

For example, firewood burning, that is, firewood and oxygen in the air for combustion reaction, if there is no oxygen, such as the burning firewood, you cover it with a bucket, is the firewood extinguished after a while, in fact, the oxygen in the air is gone. ”

"So what is oxygen? Why didn't I see it. ”

Mo Mo also explained: "Oxygen is colorless and odorless, and there are many gas components in the air, including oxygen, nitrogen, carbon dioxide and rare gases.

Just like yourself, there are bones, blood, flesh and hair, oxygen is like human blood, without blood you can't live, while nitrogen, like human flesh, takes up most of it, and rare gases, like human hair, occupy very little, dispensable. ”

"Oh, I see, young master, I know this!" Several adults gave thumbs up, really admiring.

Mo Mo waved his hand, and then continued to explain the production of cement with a few of them, and explained the key points clearly, more detailed things cannot be explained in a short period of time, there is a cement production video on his mobile phone, and he gave the information to Fang Shi, so that they can study and produce by themselves.

The cement plant took a long time to build, and Mo Mo was busy with these chores, and the affairs of the other world came to an end.