Daming Town Haiwang

Chapter 90, Burning Glass
Things on the Xishan side are slowly getting on the right track, and Liu Jin is also much more relaxed. He has free time to work on some black technology, and recently Liu Jin is busy firing glass.

Glass is not uncommon in later generations. It is very common. There are countless glass products with different functions, such as window glass for household use, car glass for cars, special bulletproof glass, tempered glass, etc.

In this era, glass was a rarity in Ming Dynasty, and only a very small number of merchants from the Western Regions carried a small amount of glass products from Europe, such as glass wine bottles and glass products, which were extremely expensive. The key is that the number is very rare.

Only when the European colonists opened up the route to the East, they continuously transported things from the West to the East, and then transported the silk and porcelain from the East back to Europe, did the number of glass products increase slowly, but it was still not the case for ordinary people. Something that can be used.

The reason why Liu Jin wanted to make glass was because of the money on the one hand. Xishan Coal Industry had a big business, and the daily expenses were huge. Obviously, the product of honeycomb briquette alone could not continue to develop for a long time, and it had to be opened separately. financial resources.

Another aspect is also because my student Lin Shuhong is going to go to Huangjinzhou with the fleet, and I also want to get him a telescope. It is impossible to sail without a telescope.

With glass, you can make glass bottles and the like, and you can also make some canned vitamins, which can be brought by the fleet to prevent septicemia.

In this era of immature navigation technology, if you want to cross the Pacific Ocean to reach the Golden Continent, in addition to the geography knowledge you teach, other things are also essential.

As long as Liu Jin can think of it, Liu Jin also prepares as much as possible for his students and fully equips the fleet.

The matter of the Golden Continent was also said by himself. Whether the fleet can reach the Golden Continent smoothly and come back safely is related to his future destiny, and no one is more concerned than Liu Jin.

In the Xishan briquette stove workshop, Liu Jin alone had someone build a small stove for himself to study firing glass.

"Quartz sand~borax, boric acid, limestone, feldspar, barium carbonate~"

Liu Jin carefully inspected all the raw materials collected by others. The raw materials of glass are very simple and common, and they are everywhere, so it is not difficult to collect.

Glass is also very simple to fire, and the temperature it requires is not high. A temperature of more than 600 degrees can almost melt most of the raw materials.

Generally speaking, if it reaches 1500 degrees, all the raw materials can be perfectly blended together, and the air bubbles in the glass can be completely eliminated.

It is not difficult to achieve a temperature of more than 1500 degrees, and it is completely achievable in this era. You must know that the temperature of ordinary charcoal fires can reach more than 700 degrees on the earth, and the temperature of relatively closed bellows furnaces used by blacksmiths can reach 1000 degrees.

Liu Jin changed the structure of the kiln slightly, and added a blower device to the kiln, which can increase the supply of oxygen. Liu Jin estimated that it could reach 1500 degrees, perfectly blending all the materials, and putting the glass in the It should be no problem at all to get rid of the air bubbles.

"Almost no problem~"

"The two tigers are working~"

Liu Jin checked all the raw materials carefully, and made a detailed record of each raw material, so that an experimental record can be formed, and the next operation can be revised and summarized based on the previous operation .

"Okay~"

Hearing Liu Jin's order, Zhao Erhu became busy.

Bags and bags of glass raw materials began to be continuously poured into the furnace, and then he pulled the blowing bellows like a tireless cow.

Ever since Zhao Erhu joined Liu Jin, he has never had to worry about food and clothing, not to mention big fish and meat every day, at least for three meals a day, he is full at every meal.

Compared with his own home before, not to mention three meals a day, two meals a day can only be eaten half full. As for eating meat, it can only be tasted when dreaming.

Following Liu Jin, he grew stronger. He was originally tall, like a bear, but now he is simply a humanoid tank.

The bellows was whirring when Zhao Erhu pulled it, and the stove was made of charcoal, the best tinplate, and with the entry of a lot of oxygen, the charcoal inside also began to burn blazingly.

The original red color slowly turns white, and the temperature is getting higher and higher.

As the temperature continues to rise and continue to heat up, various glass materials inside also begin to melt, and slowly fuse together to form something in a red fluid state, which is glass.

Liu Jin was not in a hurry to get the burnt glass out. After all, he was a person who traveled through later generations. He had learned some chemistry knowledge and read a lot of historical novels. Among them, burning glass is a must for the party. skills.

I have read a lot of historical novels, and I don’t know how many times I have read the glass firing. It has been mentioned many times that the glass for firing glass needs to be stirred, so that it can be better fused, and it can also be mixed. The impurities inside are removed more cleanly.

It is also possible to reduce and eliminate the bubbles in the glass as much as possible. The bubbles are actually carbon dioxide, which is the impurity produced by the chemical reaction of various raw materials inside after high-temperature firing.

If these impurities and bubbles are not removed, the fired glass will be colored. At the same time, the existence of bubbles will seriously affect the quality of the glass. If you want to make a telescope, you must need a relatively high-purity glass.

In addition, if he wants to make money from this glass, Liu Jin is also planning to make some glass handicrafts. There are too many impurities and air bubbles, but it will seriously affect the value of this handicraft, and it will not be able to sell at a good price.

Holding a long iron rod in Liu Jin's hand, he stretched the iron rod into the stove and began to stir. He observed while stirring, and saw that there were more raw materials melted inside and the escaping heat wave was more compelling. Liu Jin also directly used an iron rod to get some glass out, ready to see the effect.

When the glass is just out of the oven, it is bright red and red, and has very good ductility. Generally, the processing of glass products is carried out at this time. It can be shaped into any shape it needs. If it is to be made into a bottle or the like, then Glass blowing is required, just use the hollow stick in the middle to connect, and blow air into it continuously.

　Please collect, please collect~
　　
　
(End of this chapter)