Favors are favors, and business is business.

Although he didn't know how Tang Ziqi calculated that he would encounter the problem of cotton raw material supply, Shi Yiwen didn't think about paying it back immediately after owing the favor, not to mention that in his opinion, Na Nizi owed him more favors.

More than anything else, business is more important than anything else.

Among all the factories, the iron factory is undoubtedly the most important, since it produces a complex structure of "mule machines", it can also produce a simple structure of looms, and the reason why Ni Mingde chose to let the iron factory produce looms, one of the most fundamental reasons, because only the iron factory can design a water-powered plant and other factories as a whole. This is the biggest advantage of the iron factory.

Now the iron factory not only produces machines, but also is responsible for the overall design of the factory, which is completely unexpected by Shi Yiwen, not this, he is not excluded, after all, in the process, its own technology can also be improved, especially the overall industrial design level.

Even Edman deliberately set up a construction firm to specialize in the construction of industrial plants, of course, now it is only according to the simple factory drawings of the 50s, but through the accumulation of experience, it can finally lay the foundation for the establishment of architectural disciplines in the future.

However, when Zhao Guoye, a clerk dug from the Ministry of Industry, began to plan and build the factory for Ni Mingde, he encountered a problem.

"The price of bricks has gone up!"

In front of the son, Zhao Guoye said a little anxiously.

"I calculated, such a factory, relying on a few nearby kilns is definitely not enough, so I thought about buying bricks farther along the river, but who knows, more than a dozen kilns in the vicinity have increased in price, and they have risen by more than 10%!"

"What! Up more than 10%? ”

Shi Yiwen was surprised, he didn't expect that the price of bricks, the most common building material, would rise, and it would rise so much.

"Childe, those kilns all said that the wind and rain were good last year, so there were many people who built houses, and the price of bricks could not be supplied, but it seems to me that they must have seen that we were going to use a lot of bricks, so the price rose together."

Building a factory building is not the same as building a house for ordinary people, even if it is a whole brick house, it is a hollow wall, which saves bricks and keeps warm from the cold, but the factory is built with a solid wall, and the bricks used are naturally much more, plus the factory compound is also built with a brick wall, so it is natural to use a large number of fired clay bricks.

When there is more demand, the relationship between supply and demand changes, and the price will naturally increase.

Shi Yiwen, who was used to seeing too many price increases, did not feel the slightest annoyance because of Zhao Guoye's words, but just responded lightly and then said.

"Since they have raised the price, then let's set up our own kiln factory and burn bricks by ourselves, anyway, there will be more places to use bricks in the future, and our own production can also reduce costs."

In fact, every time he came to the iron factory, Shi Yiwen would pass by a kiln, which was located by the river, which is a typical traditional Chinese kiln. There are two earthen kilns, hundreds of acres of grass are planted by the river, which is the fuel for burning bricks, and the reed sheds in the open field are full of dry bricks.

Originally, Shi Yiwen didn't pay attention to the basic raw materials that can be provided locally, such as bricks, but now that there is a problem, it is just a matter of solving it by the way.

Of course, Shi Yiwen did not choose to build an earthen kiln in this era, the production efficiency of the earthen kiln is too low, and the energy consumption is too large, so he chose a 16-door wheel kiln. The reason why 16 doors are selected is because of the chimney, in the production of the wheel cellar, a large amount of flue gas needs to be excluded, and at the same time, because the cellar body is huge, the flue is long, and a large suction force is required, so the chimney of the wheel cellar is relatively high, and its height is generally determined according to the number of cellars, and the chimney of how many cellars should be designed about how many meters, the height of the 54-door cellar chimney is at least 50 meters or more, that is, the 32-door cellar can not be less than 30 meters, in contrast, the chimney height of the 16-door wheel cellar only needs to be less than 15 meters, It can be regarded as economical, of course, the main cut is still because of technical reasons.

Although the price of bricks has risen, but a batch of bricks have been bought before, there are ready-made bricks available, and a wheel kiln was immediately started to be built, which is a representative of high energy consumption in the brick kiln of the 21st century, and the technology is backward, but it is definitely an extremely advanced thing in the seventh year of Wanli.

Different from ordinary earth cellars, it is a continuous production kiln, which can be loaded with blanks, bricks, and cleaned at the same time. The length of the tunnel is divided into preheating, firing, cooling and other belts. During firing, the green billet is fixed in one part, and the fuel is added sequentially in each part of the tunnel, so that the flame continues to move forward along the ring, and the green billet goes through three stages in turn to become a product. High thermal efficiency. The fuel is fed from the charging hole in the roof of the kiln.

The fire zone of the wheel cellar is as follows: 5~7 doors for pre-heating, 2~3 doors for roasting belt, and 3~4 doors for loading out of the kiln. The order of the wheel kiln belts remains the same, but always moves in one direction. Once ignited, it can be uninterrupted 24 hours of continuous production, in terms of work efficiency and heat utilization, it is beyond the reach of the earth kiln in the Wanli period, a 16-door wheel kiln, tens of millions of bricks and tiles can be produced a year.

In the past, all bricks and tiles were manual work, and mud, mud, and mud turned over all rely on manual work, not to mention that even together with the billet, it also relies on wooden molds, and pieces of manual billet molding.

It is precisely because of this that after going to a brick factory and witnessing the tediousness of brick-making, Shi Yiwen decided to study the brick-making machine, in fact, there is no need to study anything at all, only need to go to the space, and then search for it in the computer in the electronic reading room of the provincial library, and found dozens of articles or books with mechanical brick-making.

In the space a little study of the principle of the brick machine, Shi Yiwen also has some understanding of mechanical brick making, and mud, stepping on mud, turning mud this process can be directly replaced by a mixer, as for billet making, you can use a brick extruder, in fact, its structure is not as complex as imagined at the beginning, it is a simple spiral extruder, when extruded in the machine, through the export of more than a dozen iron wires cut and formed.

The principle is simple, but it is not easy to manufacture, but thanks to the experience accumulated in manufacturing equipment such as spindle spinning machines these days, neither mixers nor brick extruders have stumped the workers of the iron factory, and even together with a small number of fine parts such as steel gears, there is no need for Shi Yiwen to enter the space to process with machine tools, and those craftsmen can be cast and formed through lost wax casting, and then tempered and finely grounded, and can barely be used.

Half a month later, a "joint production line" consisting of several mixers and brick extruders appeared on the newly built brickyard.

Shi Yiwen nodded to Zhao Guoye, and then said.

"Let's get to work!"

At the driving flywheel of the transmission belt, a faint smile appeared on Shi Yiwen's face, but after a while, the smile on his face stiffened, and he muttered with wide eyes.

"How so?"