"By the way, my sister also has two other things. They are in the house over there. Xiao Shuihua, please take them to see them."
Xiao Shuihua was stunned, and then walked to the house with five girls. Xuanwu turned into a snake with legs. When he saw Xiao Shuihua, he crawled over, scaring the girls and screaming. Xiao Shuihua picked up Xuanwu
, said: "Baby, why are you like this? Is it caused by small stones?"
Xuanwu nodded quickly, looking like he was about to cry because of his grievance. Xiao Shuihua said, "Me too, okay, the baby won't cry."
She ignored Kung Fu Panda. Kung Fu Panda was so angry that he wanted to curse, but Liu Juan used a weird magic to make him unable to speak. He had no choice but to slowly follow him out.
When the girls saw the Kung Fu Panda, they screamed again, but it was not a scream of fear, but a scream of love. They gathered around and the older girl picked up the Kung Fu Panda. The Kung Fu Panda looked at the girl.
Not being a dinosaur, he rested his head on the girl's high chest and closed his eyes comfortably.
After dinner, the sun slowly set. Liu Juan placed a few women in the small water flower room. She was a golden demon and brought two holy demons with her. Naturally, she was not afraid of any ghosts. Xuanwu's force value was already very high.
, taller than Liu Juan, these girls are safe there.
Liu Juan jumped up to the big tree in the courtyard and practiced the breathing and breathing skills of the Yi Jin Jing.
Buzz!
A dragon-like sound seemed to come from the void, and Liu Juan saw a Taoist priest jump in.
The dagger beside the Taoist priest suddenly came out of his body and flashed with purple light.
This sword is shorter than a dagger and cannot be used to kill enemies at all, but the blade of the sword is covered with dense purple text.
These purple words are like sculptures, protruding on the sword, but you can't tell what the words are, like blossoming flames.
Liu Juan could see clearly that as soon as the sword flew up, a figure appeared above the Taoist priest's head, and the sword was caught in this figure's hand.
This figure grabbed the sword, flew up in the air, made a sword gesture, and rushed towards the palace fiercely, like a flying fairy from the sky.
"So fast! As fast as a flying bird!"
Liu Juan saw the figure pick up the sword and fly away. Although the speed was not as fast as the arrows shot by strong bows and crossbows, it was as fast as a galloping horse. Liu Juan thought that he was far from being that fast.
Just as this figure was flying towards the main palace with a sword, he suddenly stopped in mid-air, looked around, and saw the Taoist priest.
This Taoist priest is faster!
Eye to eye!
The figure saw the Taoist priest's eyes and was shocked.
"snort!"
The Taoist priest snorted coldly and waved his hand.
Suddenly, the figure only felt a flash of golden light in front of his eyes. In the golden light, a figure with a full body of golden armor and a golden ax appeared in his hand. He was like a divine warrior, majestic, and rushed towards him with an axe.
Cut it to his own head.
Hit with an axe.
The figure felt that his whole body was almost broken into pieces and his soul was gone.
"Liu Ding Liujia? King Yaksha!"
In an instant, a Yaksha King emerged from the figure and rushed towards the Taoist priest.
At this moment, he already knew that this divine general with golden armor and golden ax was a divine general in the Taoist sect. Like King Yaksha, he could damage the enemy when facing each other.
These two movements were very fast. When the figure was struck by Dingjia, the Taoist priest also received a strike from King Yaksha.
However, although the Taoist priest received a cross, his soul did not appear to be split apart like a human figure. He just shook his body slightly, waved his hand again, and a Dingjia god appeared again, cutting off King Yaksha in half.
This Taoist priest was so strong that although he was stabbed by King Yaksha, the damage was not serious.
King Yaksha's steel fork collided with Ding Jiajin's axe.
A demon god and a god general are fighting in the void.
Liu Juan found it interesting and couldn't help but let out a breath of amusement. After hearing this, the two things disappeared immediately.
What is this? Is it really a ghost in the underworld?
Liu Juan waited outside all night, but the two things never appeared again.
Damn it, I didn't sleep all night. If you show up again next time, I will definitely ask Xuanwu to eat you.
The system sent a message:
The host successfully drives away the evil spirit and obtains a way to make money by creating colorless glass.
Liu Juan has read a lot of time-travel books, and there are only two ways for time-travelers to make money. One is wine making, and the other is glass.
I already know how to make glass, so I need to learn something.
Liu Juan knew that the so-called glass is nothing more than a relatively transparent solid substance that forms a continuous network structure when melted. During the cooling process, the viscosity gradually increases and hardens without crystallizing silicate non-metallic materials. General glass chemistry
The composition of the oxide (na2o?cao?6sio2), the main component is silica, to put it more bluntly, it is sand!
Glass was originally obtained by solidifying acidic rocks ejected from volcanoes. As early as about 3700 BC, the ancient Egyptians had made glass decorations and simple glass vessels, but the transparency of the glass was very poor. At that time, there was only colored glass. About AD
Colorless glass was produced in China 1,000 BC. Of course, this was only learned by chance, and the specific process was not very detailed.
The real place of invention of glass is actually in Europe. Legend has it that in the first thousand years BC, a European Phoenician merchant ship was loaded with the crystal mineral "natural soda" and sailed to Belous on the Mediterranean coast.
On the river, due to the low tide, the merchant ship ran aground. So the crew members boarded the beach one after another. Some crew members also carried a large pot, brought in firewood, and used a few pieces of "natural soda" as a bracket for the large pot to cook on the beach.
Come.
After the crew finished eating, the tide began to rise. When they were preparing to pack up and board the ship to continue sailing, someone suddenly shouted: "Come and look, everyone, there are some crystal bright and sparkling things on the sand under the pot!"
The crew took these shining things to the ship and studied them carefully. They found that there were some quartz sand and melted natural soda stuck to these shining things. It turned out that these shining things were used for cooking.
The natural soda in the pot holder chemically reacted with the quartz sand on the beach under the action of flame to produce crystals. This is the earliest glass. Later, the Phoenicians mixed quartz sand and natural soda together, and then used
A special furnace melted it and made it into glass balls, which made the Phoenicians make a fortune.
What is actually recorded is that around the 4th century, the Romans began to apply glass to doors and windows. By 1291, Italian glass manufacturing technology had been very developed.
At that time, in order to keep the glass manufacturing technology secret and prevent it from being leaked, the rulers of Rome gathered all the glass-making craftsmen together to produce glass! In this way, the Italian glass craftsmen were sent to an isolated island to produce glass.
Glass, they are not allowed to leave this island in their lifetime.
As for the glass that people now use in later generations, it is actually made of quartz sand, soda ash, feldspar and limestone at high temperatures. It is a non-crystalline solid material that gradually increases in viscosity during the cooling process of the melt. It is brittle and
Transparent. There are quartz glass, silicate glass, soda-lime glass, fluoride glass, etc. Usually refers to silicate glass, which is made of quartz sand, soda ash, feldspar and limestone as raw materials, after mixing, melting at high temperature, and homogenization
, processed into shape, and then annealed.
Liu Juan remembers the main production process very clearly. The first is raw material preprocessing, crushing lumpy raw materials such as quartz sand, soda ash, limestone, feldspar, etc. to dry the wet raw materials, and removing iron from the iron-containing raw materials.
To ensure the quality of the glass. After that comes the preparation of batch materials. A certain amount of various powders are weighed according to the planned batch list, followed by melting. The glass batch materials are heated at high temperature in a pool kiln or crucible kiln to make them uniform.
Liquid glass that has no bubbles and meets the molding requirements. Then there is molding, which is to process the liquid glass into products of the required shape, such as flat plates, various utensils, etc. Finally, there is heat treatment, which eliminates or produces internal parts of the glass through annealing, quenching and other processes.
stress, phase separation or crystallization, and changes in the structural state of the glass.
Such simple craftsmanship would naturally be easy to achieve in later generations, but now in ancient times, it was not easy to produce absolutely qualified glass products.
For a whole day, Liu Juan followed the system's prompts and worked out the glass production process and some required tools in his study.
The system has built a small glass kiln, and the rest will be simple.
The utensils and kilns used to hold glass raw materials are mainly used to melt the glass raw materials, and the crucible needs to be kept at a high temperature for 24 hours. The pliers and ox carts required for glass molding are mainly used for heat preservation and preheating. On the one hand, they save the time of heating the glass.
Working time, on the other hand, to avoid instantaneous heating and cracking of the glass, the main purpose of the flame nozzle is to soften the glass so that it can be processed.
This is the preparation work, followed by the selection of materials. Sand (silica), limestone (calcium carbonate), soda ash (sodium carbonate), these things are available now, but they are not pure, especially sand, pH and among them
Metals and other components need to be measured through repeated tests under such primitive conditions, and then relevant minerals are found and added to neutralize. But in general, although it is cumbersome, the technological content is not high.
After selecting the raw materials, after several days of preparation work in the hot kiln, and then constantly testing and re-proportioning the raw materials, I failed, failed, failed again, and finally the system prompted that the experience value reached 100%, and the first batch of finished products was produced.
come out.
When Liu Juan walked out of the kiln door holding a clear and transparent tall glass, the girls couldn't help but look at Liu Juan with a look of reverence like a god.
"Master! Those Tang Si (shops run by Tang people) in Kyoto also sell colored glaze. Why isn't their colored glaze like this?"
Liu Juan took the goblet and looked at the sun. Although it was not perfect, it was still extraordinary considering the level of craftsmanship in this day and age.
"Their ones are just colored glaze, which is very different from this one!"
Xiao Shuihua's curiosity was also aroused, and she asked: "What's the difference?"
Liu Juan laughed and said: "The one they made is just colored glaze, but the one I made is made of glass!"
