Cement is a very important raw material in the construction industry, and its types are also very large, there are ordinary cement, special cement, special cement, etc., ordinary cement is the simplest, the most varied, special and special cement also have many kinds, only need to change the raw materials and manufacturing process, the cement produced will be different.

Due to the limitations of raw materials and technical conditions, what Li Ang can invent now is the most ordinary cement in later generations, and in some properties, it is even inferior to the ordinary cement of later generations, but as long as it is cement, even if the performance is slightly worse, it is always much stronger than ordinary soil.

Most of the work in the lime mine is done by hand, but the grinding step is the responsibility of the machine, because some limestone is too hard, if you let the manual hammer hit, it is difficult to crush it thoroughly, and only by using a special grinding machine can the limestone be thoroughly ground and ground into the required powder.

These ground powders can be directly transported to the melamine coating workshop or cement workshop, in addition, in the latter two workshops, there are also a lot of grinding equipment, because whether it is cement or melamine coating, it is a small powder particle, and limestone, clay and other materials are lumpy, without thorough grinding and crushing, there is no way to produce products.

Clay is relatively common in the local area, and the brick kiln workshop is built in the best place of clay ore quality, so it is not much difficult to obtain the clay block, and it can be transported directly to the cement workshop for grinding.

In addition, in order to improve the quality of cement, you can also add a variety of auxiliary materials, and add a little if you can get it, and you can only count what you don't have.

Looking at the lime powder that had been ground into powder, Li An did not approach, but left with his subordinates, so as not to form dust because of the movement of people. It will affect the health of yourself and your subordinates, and it will cause a small amount of powder to be wasted.

When walking, Li Andu walked slowly, because of the continuous transportation for many days, a shallow layer of lime powder fell on the road surface near the lime mine, and if he walked too fast, it would cause dust.

In order to prevent the accumulation of more and more powder on the road surface, the road surface should be washed with river water every few days to wash away the dust on the road surface.

The washed sewage is not discharged directly into the river, but has a special sewage river that leads directly to the harbour not far away.

Although sewage has a certain degree of harmfulness, but the sea is vast, with a very strong self-purification ability, a little pollution to the sea, can not cause much impact, is negligible.

Fortunately, there is no wind today, otherwise, a gust of wind will blow the dust on the road surface to the human body, and it will be very uncomfortable.

In Li An's previous life, when he went home, he always had to pass through the road near the cement factory, which was simply a kind of torment, because there were many vehicles transporting cement in and out of the cement factory, and each car would always miss a little cement powder, which accumulated together was a large amount, and after many years, a large amount of cement powder was piled up on the road near the cement plant, even if it was a rainy day, the impact did not have much effect, and the nearby rivers were all cement powder, and there was at least a meter of cement and mud mixture at the bottom of the riverbed. Particularly disgusting.

Usually people come and go, everyone can smell the smell of cement, if you encounter windy weather, it is particularly miserable, a large amount of cement powder comes to the face, can choke people doubt life, many times, Li Anning is willing to go around more than ten minutes away, and is not willing to take this road.

However, the strange thing is that this dirty road is actually the largest red light district in the city, with all kinds of hair washing rooms and foot washing rooms all over the place, I don't know if it is because the air here is too poor, causing law enforcement officers to be reluctant to come, or because there are more factories nearby, and the source of customers is rich enough, in short, next to the dirty road, there have always been a large number of people engaged in dirty transactions.

After getting on the bus, Ang Lee continued to the cement factory not far away to inspect the situation there and see the first batch of cement produced by the cement factory.

The pavement inside the cement workshop is similar to that of a lime mine, with a fine layer of powder that can be blown by the wind.

Because these powders are unavoidable, all the pavement of the cement workshop must be a cement floor, and only in this way can it be washed with water, if it is a dirt pavement, it will be washed away with water.

"Li Shilang, the first batch of cement has been produced, do you want to take a look."

The leader of the workshop came to accompany Li An to inspect and spoke.

Li An looked ahead and said, "The craftsmen are all having lunch, let's look at them one by one, in order, don't worry, by the way, have you eaten?" ”

"Your subordinates can eat whenever they want."

The subordinate said, and walked in front to lead the way, pointed to the nearest workshop next to him, and said: "Li Shilang, this is the grinding workshop, there are small particles in the powder sent from the lime mine, and it needs to be ground again. ”

Li An walked in and took a look, nodded with satisfaction, the grinding workshop is the first step in the production of cement, and it is also a very important step, if the grinding workshop can not completely grind the material, then the following production steps can not be carried out well.

Therefore, the grinding process is very important, Li Ang picked up the plastic gloves, gently put them on his right hand, and then walked slowly to the small warehouse of the other party's powder.

"You don't have to come with me, just take a look at it alone."

Li An was worried that too many people would cause too much dust, so he opened his mouth to prevent the rest of the people from entering the small warehouse.

"Yes, it's all in powder, it's good."

Li An grabbed a few large handfuls of lime powder with his right hand at random, kneaded it carefully, and found no hard particles that pierced his hands, which means that the grinding is very good and it is already qualified.

"Well, it's pretty good here, it's all powdered."

After inspecting the lime powder, Li Ang went to inspect the clay powder, and he was generally very satisfied, both of which were ground in place and were qualified products.

After taking off the rubber gloves, Li Ang casually threw them in the workshop, and left the grinding workshop with a group of people to visit the next workshop.

"Li Shilang, this is the mixing workshop, where all kinds of powders are mixed and stirred evenly."

The subordinate introduced.

Mixing is also a very important step, in order to make the quality of the cement produced, it is necessary to carry out sufficient mixing, must be mixed evenly, and in accordance with the scientific ratio, if the proportion is wrong, the production is waste.

The mixing equipment is relatively simple, it is a cylindrical machine that can rotate, and after various powder materials are poured, they can be rotated and mixed, and they can be completely mixed together in about half an hour.

The mixed materials are mainly clay powder and lime powder, and some other materials are added, but the quantity is not very large, and they are all materials that can be produced in Anzhu City.

The mixing workshop is mixed with raw meal, which cannot be used directly, and the next step is needed, that is, the calcination workshop, that is, the mixed mixture is put into the calcination machine, and calcined at a high temperature of thousands of degrees, so that various mixed materials can undergo chemical reactions at high temperatures, so that the cement materials that can be used directly are mostly manufactured, and this product is called clinker.

Of course, the clinker is not finished, and there is one more step, which is to mix the clinker with a small amount of gypsum and grind it again to make Portland cement.

Gypsum is a product made of limestone as a raw material, and the lime mine is next to it, so the source of gypsum is not a problem, and there is a small gypsum manufacturing workshop inside the cement workshop, so it is not stressful to obtain a sufficient amount of gypsum.

Ang Lee and the others went to the last workshop, which is also a large grinding workshop, where the mixture of high-temperature calcined clinker and gypsum will be ground in the final step.

"Li Shilang, these are the cement that has just been produced."

The subordinate pointed to the gray cement powder and spoke.

Li An happily walked over, pointed to the cement that had just been produced, and said, "Have you passed the inspection, can you meet the requirements?" ”

The subordinate hurriedly pointed to a short wall outside the workshop and said, "Li Shilang, please see, the short wall outside is built with cement produced here, but it hasn't dried yet." ”

Li An walked to the short wall, kicked a few times, felt very good, the short wall did not move at all, however, the solidification time of the cement is relatively long, and the detailed technical indicators of the cement can be determined only after the cement is completely solidified, however, in Li An's experience, the cement produced here is good enough, which can fully meet the needs of the construction of Anzhu City.

"Yes, it's good, we need to do more experiments to get the detailed data of the cement."

Ang Lee opened his mouth and explained.

The inspection of the cement workshop was just to take a look, and there were no new instructions, and after reading it, I drove back to Anzhu City.

Now, the cement workshop in the north of the city has been put into operation, and the material reserves for the construction of Anzhu City are more sufficient, and I believe that Anzhu City will be built more rapidly.

"Li Shilang, the officials of Anzhu City sent by the imperial court have already arrived in Tocharo, and they will be able to reach Anzhu City in ten days at most."

One of the subordinates spoke.

Li An nodded and said, "In this way, we can only stay in Anzhu City for ten days, and we will leave after ten days." ”

After staying in Anzhu City for so long, witnessing Anzhu City from a pirate's lair with nothing to a vibrant city, Ang Lee developed feelings for Anzhu City, a very deep feeling, both for things and for people, among them, the feelings for people are deeper.

Ten days before he left this city, Li An suddenly felt a little reluctant in his heart, and his heart was a little sour, especially the two delicate beauties of the white fox and the magpie.

Thinking of the white fox and the magpie lying in his arms, Li An was very happy, if he sent these two back to Chunxiang Building like this, and let them suffer the devastation of different benefactors, Li An would be a little unhappy, but if he brought the two, Yun'er and the beauty should be unhappy, and there is still a long way to go, and I don't know how many pink beauties I will meet? With too many girls around, it's hard to take care of them all, or you'll be tired enough.

In short, I feel very conflicted, I don't take it away, I don't take it with me, it's not that tangled! Stuffed in the heart.

"Ah Lang, you went to inspect the cement workshop today, and you must have been covered in dust, do you want to wash it."

Yuna asked softly.

Li An nodded and said, "Taking a bath is a must, but you don't need to serve it, let the white fox and magpie serve it!" ”

"Why! Alang, aren't we serving well enough? ”

Yuna is unhappy and coquettish.

Li An touched Yun'er's little face and said: "Yun'er, it's not that you don't serve well, it's that we are about to leave Anzhu City, there are ten days at most, we are going to leave Anzhu City, the white fox and the magpie are going to stay, just a few days, of course Ah Lang has to accompany them more." ”

"Oh, that's right! The slave understood. ”

Yun'er is also a reasonable and virtuous person, she will not make trouble with Ang Lee, I heard that she is about to separate from the white fox and the magpie, and she is a little reluctant in her heart, although she is a little jealous of the two, but she is not so annoying.

Li An stood up and said, "Yun'er, you and the beauty should rest early!" Ah Lang is accompanied by a white fox and a magpie. ”

Yuna nodded, walked outside, and went to call the white fox and the magpie, the two of them were swinging, and they were having fun.

Looking at the white fox and magpie jumping towards him, Li An was even more reluctant in his heart, and he really wanted to take them away!

"Let's go, let's take a shower."

Li An hugged the white fox and the magpie and walked to the boat on the pier.

Although the fixed bathing pool in Anzhu City has been made very well, Li An is still used to taking a bath on a boat, where it is more romantic and more private, and can give people better enjoyment.

The hot water was prepared in advance by the handymen, and when Ang Lee arrived on the boat, the hot and cold water had already been mixed, so after a little rest, I took a bath.

Li An didn't get much lime powder on his body, but his mental effect made Li An wash it many times, until he confirmed that the lime powder on his body was all cleaned, then he came up from the big bath, wiped the water traces on his body, lay on the rocking chair, and let the white fox and magpie massage him.

"Comfortable, really comfortable, press it a little longer."

Ang Lee enjoyed the request.

They are about to leave Anzhu City, and Li An naturally wants to enjoy the two of them for a while, and after leaving, they can't enjoy it.

"Li Shilang, why don't you let Sister Yun'er and Sister Beauty come over to play together today?"

The white fox asked curiously.

When Yun'er called her just now, because she sympathized with the two of them and wanted to stay and serve a large group of benefactors, her words seemed quite caring and gentle, which made their impression of Yun'er change a lot.