"Come over one by one to see what's going on inside." With the gasoline boost and the foot-operated blower, the speed and temperature of coke burning has increased significantly, and there is a heat wave around the fireplace in no time. Hong Tao kept watch at the mouth of the stove, staring inside through the observation hole, and only asked the children to come over one by one when he noticed the changes.

"Yikes! The sand was burned...... "It was easy for the children to notice the changes in the furnace, the shiny quartz stone was gone, the white lime was gone, and it was replaced by a gray mass, saying that the liquid was not a liquid, and that the solid was a little wriggling.

"Silica has a very high melting point, and it is difficult to burn it. So the officials added lime, which is the same as iron smelting, what should it be called? "Finding change is not the goal, Hong Tao still has questions waiting for him.

"Co-solvent!" As soon as the words fell, Chen Niang gave the answer, and her face was full of pride.

"Is what Chen Niang said right?" Hong Tao was very helpless, Chen Niang's learning speed was too fast, but she couldn't help but let her answer.

"Yes......" The children affirmed in unison, only Gao Yu didn't look up, he was playing with his life to take notes.

If he is not too far behind the children physically, then he is too far behind in knowledge, and he can't understand many courses, so he can only rely on Wang Da to make up lessons in private.

"Now it's up to the officials to do their tricks...... I add soda ash to ......" Hong Tao picked up the spoon used to stir the iron slag, put the soda ash and stretched it into the furnace.

"It's gone! It's gone! It's like hot caramel candy! This time, Chen Niang was rushing to answer, and she gave a very appropriate example.

The mass in the furnace was fused with soda ash and significantly reduced its viscosity, and it could no longer be formed, and it collapsed into a viscous liquid.

"Soda ash is also a co-solvent, which further dissolves silica into a liquid state. But there is a problem, I don't know if anyone has noticed, these slimy liquids are too turbid, there are not only impurities but also many small bubbles in them. The officials below will continue to play tricks with arsenic, look carefully......"

The last ingredient was added with an iron spoon and stirred with a steel drill. The arsenic soon melted, fused with the liquid, and then a miracle happened. The liquid is getting purer and purer, and impurities and bubbles are gone.

"It's crystal...... Big, adults are making crystals! "Gao Yu can finally answer!

He seemed to have seen something similar, and there were a few crystals in the package that Su Shi came to Huangzhou to give to the concubine, although one was solid and the other was semi-liquid, but the color and transparency were very similar.

"Crystals? It's a shame that you've been in Kaifeng City for a while, and it seems that you haven't made any names. Look, the answer is about to be revealed! Hong Tao picked up a thin steel pipe and stretched it in, the semi-liquid was cold and viscous, and the end of the steel pipe was brought out.

At this time, Hong Tao stuffed the end of the steel pipe into his mouth, puffed out his cheeks and stared, blowing back and spinning. The translucent liquid at the top of the steel pipe actually bulged like a bubble. Seeing that the semi-liquid was becoming more and more transparent, Hong Tao put the steel pipe into the furnace again, so that its temperature would not drop too quickly, and then blew and turned.

"Grab the scissors and cut it!" After a few minutes, the red-faced waves finally stopped blowing, and the top of the steel pipe had already appeared in the shape of a vase, and the semi-liquid had become a soft and collapsed solid, which could be cut by scissors like dough.

"What adults did is not the Western Regions Glass!" Gao Yu has a new idea, he has also seen this kind of transparent utensil, it is very valuable, but he is not sure whether it is or not. Because the glass is hard and brittle, but this thing in front of me is a little soft.

"This time it's a bit of a bit of knowledge, but it's not called glass, it should be called glass. It's just that the official's blowing skills are a little flawed, and the appearance is not very beautiful. "The burning of glass Hongtao has long been held, but it has been dragged because of raw materials and manpower problems, and more importantly, there is no demand.

Burning glass and selling this is a good business to make money, but unfortunately Hong Tao is not short of money, and no matter how good the business is, there is no huge profit from selling flower paste. Now he has a demand, and it's quite high.

Chemical experiments are inseparable from glassware, and telescopes, snow goggles, and sextants are also inseparable from glass. With the primary oil refining technology, kerosene lamps and gas lamps were also officially put on the agenda. There is also a more primitive chemical fuse, which must have a glass tube before it can be manufactured.

"The villain is willing to learn the skills of blowing, please teach the adults......" Gao Yu also felt that Lord Shuaisi's glass blowing skills were not as good as bragging, this vase was blown crookedly, and a piece of good material was wasted in vain.

"What kind of villain, adult, self-proclaimed student, called official, I can't remember it after saying it so many times, I'm stupid to death, and I still want to learn the mastery of officials, wishful thinking!" Before Hong Tao could preach or not, Gao Yu received another slap on the back of the head. Wang Dazhen was obedient, stopped kicking his legs, and hit his head instead.

"Hey, Wang Da, although he is your husband, he is also a man, you must keep face in front of outsiders, and you are not allowed to beat and scold at will in the future. Why does the lord have a soft spot for this thing, let the officials hear it. Wang Da is well-intentioned, but she doesn't know how to get along with people, and she doesn't know how to deal with the relationship between husband and wife.

The title of official and student is to distinguish family members from outsiders, which is the prerogative of the Children's League and the Youth League, and they are also proud of this title. In addition, Hong Tao also gave Gao Yu a name, which was a welcome gift for him to officially join the Youth League.

Don't underestimate the table word, it represents a person's class, ordinary people and working people do not have the table word, and they are generally given by learned elders and teachers.

Hong Tao gave Gao Yu very few table words, and it was also very strange, called Dashang. The meaning of Hong Tao is that it means that Gao Yu can escape in the ice and snow, which belongs to the great life of Fu Da and the great creation; Shang is to encourage Gao Yu to study hard every day and become a master in the future.

But this is all Hong Tao's nonsense, and the words he gave Gao Yu have no meaning, it is completely out of fun. Tall, tall! Whenever he thinks of this name and word, Hong Tao can't help but be happy.

"Little ...... The students wanted to make beautiful drinking vessels for the officials, and they could exchange them for money when they got them. Gao Yu said very simply, he wanted to help his teacher make more money. It doesn't matter if it's glass or glass, anyway, with the teacher's blowing technology, no matter how crystal clear the material is, it's blind.

"It seems that being a corrupt official also requires talent, and if you like money and can blow it, you are very optimistic about you as a teacher, so blow it hard." It's okay to run and squeeze Gao Yu has become one of Hong Tao's pleasures, he is now disabled, it is definitely not suitable to be an official, and there is no future as a soldier, and he really needs to learn a craft. Blown glass is nothing in the future, but at this time it must be a stunt, very high.

The glass made by Hong Tao is slightly yellow, and the transparency is average, and if you want to get completely transparent glass, you must add a clarifier, which is called lead monoxide.

This is a yellow crystalline powder made from metallic lead dissolution and air oxidation, which is then purified with soda ash and obtained after dry distillation. The difficulty of preparation is not very high, and the raw materials are easy to find, but Hong Tao did not do it.

Because lead monoxide is more toxic than arsenic, it is easy for people to get lead poisoning through breathing and skin contact when there is no safety filter, which is too dangerous and unnecessary.

But now that there is a need, the danger can be overcome. Hong Tao thought of a way to avoid poisoning, which was to let those Xia captives burn lead monoxide.

Wouldn't the Xia people be poisoned? inevitably, but if you want to promote scientific progress, someone must dedicate yourself, and Hong Tao generously gave this honor to the captives.

Not only this one, but many more in the future. In layman's terms, the chemical industry is making all kinds of poisons, each more toxic than the other, and no matter how many captives there are, it is not enough to consume.

Through this incident, Hong Tao felt that his previous approach was a bit stupid. Why do you want to freeze to death and starve to death on the vast snowfield, they should have a higher way to die. It's all death anyway, so why not make death more meaningful.

Before the lead monoxide was manufactured, the firing of the glass had to be carried out. The test vessel doesn't need to be that transparent, or even ugly. By the way, he also helped Gao Yu practice his blowing skills, and when he could blow the sky, the completely colorless and transparent glass could almost be burned.