In fact, many people are well aware of the use of project construction to cover up the theft of national resources.
This time, under the "cover" of filling soil for major projects, the "black soil" buried underground was secretly dug out and then sold at a high price to make a profit.
The construction team normally does filling work during the day, and illegally excavates "black soil" at night.
Then, at night, the dug "black soil" is transported to the ceramics factory for sale.
The soil quality of this "black soil" is completely different from ordinary red soil.
This is a kind of black mud that has a greasy quality and feels tender and smooth when held in the hand.
The locals only know that this black soil can be used to make high-end porcelain, but they don't know that it can also be used to make Ru porcelain that is as good as jade!
Therefore, this "black soil" is a scarce resource.
In fact, most of the raw materials for making Ru kiln porcelain, such as black soil, can be purchased in the Ruzhou area.
The area under the jurisdiction of Ruzhou is rich in clay, a large amount of calcite, albite, feldspathic sandstone, pyrophyllite, fluorite, hard kaolin, soft kaolin, quartz and other main raw materials, and is widely distributed.
Why do you steal things for small profits when you can buy them?
After sending Wu San and others away, Chen Wenzhe sent a message to Li Jinli, asking them to purchase all raw materials related to Ru kiln porcelain and send them to the ceramic factory in South Vietnam as quickly as possible.
Next, Chen Wenzhe made two preparations while waiting for the newly formed fleet to arrive.
Especially some of the expedition ships and salvage ships. Of course, these ships look similar to ordinary cruise ships.
However, as long as Chen Wenzhe needs it, he can assemble it with professional tools and turn it into various professional ships.
Chen Wenzhe has long wanted to follow a river in the interior of South Vietnam and enter the mountainous areas of Northern Vietnam to look for gems and treasures. It would be great if he could find the ancient tomb.
Now the fleet has been established in China, but it seems not easy to enter South Vietnam.
Gao Qijing is currently going through various procedures. If it really doesn't work, he can just buy a few more ships in South Vietnam and replace them with equipment. The effect will be the same.
After waiting for such a long time, Chen Wenzhe did not wait for the fleet, so his inland treasure hunting plan could not take place yet.
And if there was enough time and all the raw materials he needed from the country were delivered, then he wouldn't mind making a batch of porcelain first.
Of course, he is not idle now. In the past few days, whenever he has time, Chen Wenzhe will hold the Ru kiln three-legged washing machine and use it back.
A piece of Ru kiln that has been handed down from ancient times has a history of thousands of years. Looking back on its experience, there are too many historical fragments, or important gains.
Anyway, I have nothing to do, just watch a movie.
On this day, Chen Wenzhe received the purchase order, and the goods had entered South Vietnam Customs.
By this time, he had thoroughly learned the making of Ru kiln porcelain.
"After you get the materials, you can make a few pieces and see the effect."
While drinking tea, Chen Wenzhe was sorting out the process of making Ru kiln porcelain in his mind.
I sorted through the memories in my mind. The more I sorted them out, the more emotional I became.
It turns out that what he thought was too simple. The firing of royal porcelain is really not simple.
It is not that Chen Wenzhe has never seen the production of other official kiln wares, such as Xuande blue and white, further Yuan blue and white, and Five Dynasties secret color porcelain.
But these are really different from the official kiln wares of the prosperous Song Dynasty.
The price of Ru kiln porcelain is not unreasonable, because every step from the initial design to the production is carefully selected.
For example, when choosing porcelain stone, this step will start from quarrying → picking stone → washing stone → crushing → filtering → mud refining, a total of six steps.
This can be regarded as a clay training skill, and this time's clay training is much more rigorous and solemn than Chen Wenzhe's original clay training.
Then the blanks are drawn manually or molded with grouting.
After the porcelain embryo is formed, it is to dry the blank → repair the blank → carve → biscuit firing (600°C-800°C) → glaze (agate glaze) → finish the glaze blank → dry in the shade → install the sagger → high-temperature redox fire
into (1000°C——1400°C).
Just step by step, Tianqing Ru porcelain is fired in a heavy reducing atmosphere and under high temperature conditions.
Pink Ru porcelain is fired in a medium reducing atmosphere and slightly lower temperature.
Bean green Ru porcelain is fired in a light reducing atmosphere and at low temperature.
After understanding this, Chen Wenzhe has become very familiar with the characteristics of Ru kiln's porcelain making technology.
He is also very familiar with the porcelain making process of Ru kiln, which mainly includes five aspects: material selection and processing, blank and glaze preparation, molding and carcass decoration, biscuit firing and glazing, and glaze firing.
It can be said that every step of these processes is important.
I won’t talk about anything else, just the selection of ingredients in the first step.
For ancient kiln workers, they could only choose suitable mineral materials from the local area.
For Chen Wenzhe, it is relatively simple.
Because modern science and technology have already conducted very in-depth research on Ru kiln porcelain.
In addition, after finding the old site of Ru kiln, all you need to do is choose suitable porcelain clay locally.
What is suitable? It means that the mineral content is consistent with that of Ru kilns handed down from ancient times.
Material selection is the first step in making porcelain in Ru kiln. The objects of material selection include the blank raw materials and glaze-making raw materials used to produce Ru porcelain.
The raw materials for making blanks are mainly clay, and the raw materials for making glaze are mainly minerals rich in potassium, sodium, silicon, aluminum, calcium, magnesium, iron and other elements.
The main purpose of material selection is to find high-quality mineral sources for the production of Ru kiln products, so as to ensure the smooth progress of the subsequent porcelain making process.
For example, the carcass of Ru porcelain has a low degree of porcelain, is gray in color, and contains a certain amount of color-producing impurities.
Therefore, even minerals with roughly the same element content are different, and they are very important.
According to a lot of experimental experience accumulated in modern times, the color-developing impurity element in the Ru porcelain body is iron, with a content of more than 2%.
Moreover, the blank of your porcelain should contain combined iron elements.
Since the blanks used in the production of Ru porcelain contain a certain amount of combined iron elements, the minerals will inevitably contain impurities such as free elemental iron and larger iron tetraoxide.
These impurities have low refractoriness. When melted at high temperatures, they will cause the surface of the carcass to collapse, leaving black spots on the glaze surface, seriously affecting product quality.
From the observation of the glaze and carcass of Ru porcelain handed down from ancient times, we can see that iron black spots on the glaze of Ru porcelain handed down from ancient times are rare, and there is no obvious collapse on the surface of the carcass.
In this way, the choice of mineral materials becomes even more important.
If it were anyone else, just at this point, they would need to spend a lot of money and time to keep experimenting.
Through backtracking, Chen Wenzhe knew very well how to avoid this pitfall.
In fact, this is very simple. In order to ensure the quality of Ru kiln products, ancient people chose minerals with a high degree of weathering as raw materials for the production of Ru porcelain.