Seeing that the temporary researchers quickly entered the state under Harper's management, Xia Lin was relieved of the progress of the laboratory, and once again came to the industrial park that was only in its embryonic form.

The dwarves' smelting and calcination skill points are definitely full, no matter how complex the kiln body is, it is simple and clear under their guidance, even this group of half-grown children who have only played with mud have done a good job.

But even so, the endless accidents during the construction were still a bit unexpected by Xia Lin.

First of all, there is a shortage of manpower, although Xia Lin planned manpower and man-hours in detail in the plan, but in reality, the labor provided by the half-grown children in the slums was not as much as imagined, and Xia Lin chose to build three vertical kilns at the same time, and soon the manpower on the construction site was stretched.

It is mainly reflected in the fact that Xia Lin found that there was no one to make bricks?!

However, this point of Xia Lin is very easy to solve, during this time, Xia Lin's group of people has attracted the attention of the fish teeth who are close at hand, and from time to time someone comes to find out what they are doing here.

In order to dispel their doubts and temporarily ease the relationship between the two parties, Xia Lin asked Roy to negotiate with them and offer a new job for the residents of their territory:

Collect clay to make bricks.

The specific reward is 10 standard bricks and 1 copper mis, and you can also get an additional 5 copper pebis for every 100 bricks.

This may sound like a lot of money, but it's not easy to meet Xialin's standards.

First of all, you have to go to the river to take the clay yourself, then crush the clay and sieve it, and then add water and knead it five to six times, at which point you can pour the clay into the mold and make it shape.

At this point, the next step is the work of Xia Lin's side, which is to place these bricks near the vertical kiln, separate them with sand on the top, bottom, left and right, and make full use of the waste heat emitted by the kiln body for drying.

This kind of work is quite heavy, the raw hands can make about 200 bricks a day, get 30 copper pes, and the skilled hands can only make 400 bricks, get 60 copper pes, and many of them can not meet Xia Lin's requirements, will be screened out.

Excluding the commission of fish teeth, it can only be said that it is much better than working as a contractor at the dock. However, even so, it can be expected that the strength of the fish teeth will increase a lot.

In order to make Fish Tooth's life not so easy, Xia Lin specially asked Roy to put forward a request, that is, the salary was directly distributed to the workers, and if they wanted to take a cut, they could only ask for it by Fish Tooth or the members of Fish Tooth would ask for it themselves.

People have a strange trait, things that haven't been received are often part of the expectation, and in the end there are not so many things that are sent, so it is barely acceptable.

But if they take away some of what they already have, then they tend to hold a grudge against the person who took what they have.

Xia Lin didn't expect to cause dissatisfaction among the brickmakers and let them overthrow the fish tooth, but as long as there was a disagreement between the two sides, Xia Lin would be much easier to remove the fish tooth that had lost its rhizome in the future.

With the addition of these local brick makers, the three vertical kilns soon began to fire red bricks.

Xia Lin then encountered a second problem, that is, the infrastructure in the slums was too poor, and the transportation costs remained high, resulting in intermittent coal supply.

However, this is easy to solve, and the wealthy Xia Lin directly hired a cargo ship at the dock, let the coal be sent to the dock to be loaded, and then down the tributary of the Seine River to the small inlet near the construction site.

The water is gentle and the water depth is high, so unloading is not a problem there.

After solving these bits and pieces, it took seventeen days for the three vertical kilns to finally fire enough bricks, and Xia Lin hired ten craftsmen in the stonemason's guild in the imperial capital, and asked them and the dwarves to use these red bricks and cement mortar to build the kiln body of the wheel kiln.

When the wheel kiln with a height of 3.2m, a width of 6.8m and a length of 12.6m was completely completed, Xia Lin finally breathed a sigh of relief.

He designed a simple wheel kiln with a total of 12 doors and 8 kiln chambers, which could be rotated when firing bricks. Two kiln chambers are dried, two kiln chambers are preheated, two kiln chambers are fired, and two kiln chambers are cooled.

After a batch of red bricks is fired, the flame can be moved along the circular kiln road to the next two kiln chambers, where the cooling kiln will draw cold air due to convective heat transfer, and heat it into hot air in the roasting zone to enter the pre-tropical and drying zones.

In this way, the flame rotates and moves in the kiln road, and the eight kiln chambers can continuously produce bricks, and a batch of two kiln chambers with a size of 3.4*2.8*2.6m can produce 40,000 bricks.

With 40,000 bricks a day, Xia Lin felt that as long as the bricks and fuel could keep up, his industrial park would soon be perfectly landed.

To this end, he expanded the number of brick-makers to a total of 200 people, and also developed a new type of work, that is, the brick-movers, who were familiar in the previous life.

It takes four days for a round of firing in the wheel kiln, and in one day, the brick movers need to move 40,000 fired and cooled red bricks out of the kiln room, and at the same time move the same number of prepared bricks to the kiln room and stack them neatly in a vertical and horizontal way.

This process must not be done by Xia Lin's direct employees, so naturally they can only hire brick movers.

Three copper bis per 100 bricks, this work intensity is higher than that of brick making, but the benefits are also greater, and it is easy for a strong and skilled brick mover to carry 10,000 bricks a day.

Even if the nutritional status of the people in the slum is not good, three or four thousand bricks can be achieved, and that means that the income of hundreds of copper pess is the highest paying job in the slums, and many small plots of land cannot be scavenged every day for so much money.

Therefore, when Xia Lin began to recruit, even many of his employees were moved, but after thinking about it, although they only received a salary of 50 copper bis, they were as easy as brick movers, and they were also "in the file".

According to the cake that Xia Lin painted for them, they will be the managers of the factory in the future, and their salaries will be increased again, so why should they grab the kind of job that is tired and prostration every day?

When the construction of the huge amount of wheel kiln was completed and production began, the vertical kiln cement designed by Xia Lin also began to produce cement, which is an indispensable raw material for all kinds of construction.

The firing method of cement is extremely simple, using clay and water with limestone, gypsum, fine sand and mud and then sending it to the grinding disc for grinding, and then drying, reaching the degree of viscosity, mixing with charcoal powder into a raw meal ball with a diameter of 10-30mm, and sending it to the vertical kiln for calcination with charcoal blocks after drying.

After calcination, cement clinker is obtained, but if cement clinker wants to achieve good performance, there must be a crushing and grinding process, so Xia Lin designed a simple temporary grinding device for this purpose.

On the outer coat of the grinding disc is a wooden box with a lid on the top, connected to a pipe and material box, on the other side is connected to a blower, and above is a windmill grinding disc transmission.

In this way, two people rotate the grinding disc through the transmission device, and the other person manually blows the air, and the cement dust that the grinding disc grinds finely can be blown and deposited in the material box like a pipe, so as to continuously obtain the finished cement.