Magus Tech (Technological Wizard)

Richard doesn't know what happened in the jewelry store, but after getting the ruby, he has collected all the raw materials for making cobalt blue, and the rest is to make cobalt blue, and then make real cobalt blue glass. So, Richard and Gero went to the last place they were going today - the glass factory in the Emerald Kingdom.

This place is not something that ordinary people can enter, and even Gero can't go in and out casually.

This is mainly because glass, especially high-quality glass, is considered an absolute luxury in the current medieval world. Large-area glass mirrors are more expensive than gold, and small pieces of stained glass used to decorate stained windows in churches are also valuable. Even broken glass pieces are not available to ordinary people, and are often inlaid on gorgeous evening dresses by some noble young women to attend dinner parties. In their opinion, shards of glass are brighter and more representative of identity than gemstone rings and pearl necklaces.

To put it simply, glass is almost never touched by the commoners, it is completely exclusive to the nobles, and has huge benefits. For this reason, a country often holds the glass factory firmly in its hands, places it in a remote place, and sends heavy troops to guard it. Craftsmen are not allowed to leave the glass factory for life to prevent the leakage of craftsmanship.

In fact, this is also a true portrayal of modern earth history.

In the history of the modern earth, around the 12th century, Venice, as the glass manufacturing center of the world at that time, in order to monopolize the glass making technology, all the glass artists were directly enclosed on an island called Murano for several centuries. .

In the Emerald Kingdom of the current world, it has not been exaggerated to this extent, but Gero also used his status as a prince, and it took a lot of trouble to finally obtain the qualification to bring people in.

After several identity checks, Gro and Richard walked into the glass factory of the Emerald Kingdom.

Inside the huge wooden shed, square ponds are everywhere, there are many stoves, and the heat is soaring into the sky. A large number of workers and craftsmen are constantly coming and going, climbing up and down the shelves one by one, shouting constantly.

"Shaq, go to Furnace No. 1 and see if the fire is out!"

"Babes, go to No. 4 furnace and check the fuel."

"Nus, there is a problem with the 15th pool, go and call Master Menghaqi to take a look..."

The director of the glass factory, Vichy, who was in his forties, with brown hair and high cheekbones, led Richard and Gero through the wooden shed with a respectful attitude. After all, it is one thing to have strict guards in a glass factory, but as the director of the factory, he is still just a douchebag in front of Gero. If he dares to be disrespectful, Gero will dare to throw him into the pool to make glass.

Vince has this attitude,

Naturally, there is no disadvantage. Richard will soon arrive at a furnace that has been temporarily shut down. Through some means, cobalt ore, ruby ​​and phosphoric acid are made into cobalt blue, a pigment.

Then hand the cobalt blue to Vince, and let the other party put it into the unformed glass according to a certain proportion, and finally produce the cobalt blue glass that meets the requirements.

Vince did it quickly, and after a while, brought the product.

"This... Your Excellency Richard." Vichy handed a palm-sized glass sample to Richard's hand, and said, "This is just made according to your instructions, you see... Are you satisfied? ."

Li Cha took the glass piece, glanced at it briefly, and saw that the glass piece was navy blue, which basically met the requirements of cobalt blue glass, but...

Li Cha slightly tilted the glass and changed the angle of incidence of the light. He saw that the glass showed a light green again, and his brows suddenly wrinkled.

This is... a sign of impurities in the glass.

Richard thought.

This shouldn't have been deliberately made by Vince. The other party has neither the guts nor the motivation. It's purely a process issue. At present, in a world similar to the Middle Ages, the glass technology has not reached the level of modern earth, and the more traditional technology is used, that is, silica rich in silica (ie, quartz, the main component of sand) is used as the raw material. Make glass.

The melting point of silica is 2000 degrees Celsius, which is difficult for ordinary furnaces to meet the requirements. In order to reduce the difficulty of production, sodium carbonate (soda) and potassium carbonate (potash, potash) will be added to reduce the melting point of silica to about 1000 degrees Celsius. However, sodium carbonate will dissolve the glass in water, so an appropriate amount of calcium oxide (cao) is usually added to make the glass insoluble in water.

In this process, many raw materials and minerals cannot be 100% pure, and some impurities will be mixed in, and iron, as the most common mineral element, is easily mixed into it. Eventually, a series of reactions lead to the formation of ferrous ions, which give the glass the light green color of ferrous ions.

This is an unavoidable phenomenon. Unless the entire process is improved, unless all raw materials and minerals are made 100% pure, this problem cannot be solved from the source.

Generally speaking, this doesn't make much of a difference. In fact, on the modern earth, many low-cost glass are pale green. In order to prevent the damage to beer caused by ultraviolet radiation, the bottle of beer is specially added with iron to make it dark green.

But the cobalt blue glass that Richard wants to make now is for the flame experiment. The role of cobalt blue glass is to eliminate possible color effects to ensure that the true flame color is observed, so it should eliminate color difference as much as possible.

In this case……

Li Cha frowned deeply, thought for a moment, turned his hand, and there was a small glass bottle in his hand, which contained half a bottle of gray-white metal powder, which was manganese powder.

Since the problem cannot be solved from the source, it can only be solved from the last link. A small amount of manganese can change the light green color caused by ferrous ions in the glass through the reaction, but the concentration must be well controlled.

Handing the manganese powder in the glass bottle to Vince, Li Cha said, "Go and make the blue glass piece I want again. While making it, sprinkle the powder in again. The concentration is..."

After talking for a while, Li Cha looked at Vichy, who was a little stunned, and asked, "Do you understand?"

"Uh, I understand, I understand, but... what's the use of this, Your Excellency Richard?" Vichy said with a little doubt.

"You don't have to worry about it, just do what you do." Li Cha said.

"Uh, okay." Vince glanced at Gero, who seemed a little bored next to him, and went to find someone to operate the manganese powder given by Richard.

After a while, Vince walked back with the newly-made cobalt blue glass. His face looked very calm, but his hands were trembling, and it was difficult to hide his excitement.

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