Before modern times, whether it was a gold and silver shop smelting a whole piece of gold and silver or a jewelry shop to transform metal, most of them used a large furnace to burn the crucible of wrought iron to melt, until the discovery of kerosene in modern times, there were craftsmen who studied the smelting method of blowtorches. Pen ~ fun ~ pavilion www.biquge.info

The so-called blowtorch smelting method is actually the earliest use of kerosene lamps to obtain a high temperature blue flame through artificial blowing to directly spray the metal surface, and use borax as a flux inhibitor to reduce the melting point of the metal, so that the metal can be easily smelted.

Nowadays, Huang Jie's lamp is naturally not kerosene, but a fierce fire oil (home-made gasoline) that is better than kerosene, which can naturally be compared with kerosene.

In the blink of an eye, the silver judgment was also turned into silver juice, and it was all dissolved in the mold, Huang Jie also asked Wu Daoqing to stop blowing, and then directly sprinkled water to cool it, so he made the clip to clamp the melted silver coins in the mold and look at it with everyone, which immediately attracted heated discussions. A few veterans who should have made achievements in alchemy couldn't bear it, and they stepped forward to give salutes, and they wanted to come to the stage to observe on the spot, Huang Jie naturally would not object, so he melted the gold and copper in front of them, and immediately called the veterans all convinced, which also proved that the fire standard found by Huang Jie was true.

But Huang Jie is also modest, this is indeed not the means to accurately determine the heat, and can only be speculated based on experience, I am afraid that there are still fallacies, which need to be studied and corrected.

As for how to smelt zinc, Huang Jie didn't go into detail, and everyone didn't dare to ask in detail, after all, Huang Jie had already said that refining requires three boiling heat, and zinc refining needs four boiling heat.

Through this small on-site test, Huang Jie not only confirmed his fire standard, but also indirectly confirmed that he is indeed capable of refining zinc and copper-zinc alloys, which naturally attracted the attention of the participants.

However, Huang Jie was not complacent, but after asking the fireworker to remove the props for the test, he pointed to the four crystal cups placed on the front desk and said: "It's all an introduction, now it's back to business!" Today's topic is the three things in front of you, alum, caustic soda, and fire nitrate. As for borax, in addition to medicinal use, it can also be used for alchemy, but it is of great use. ”

After speaking, Huang Jie moved the borax aside, and then picked up the alum first and said: "There are clouds in "Tang Materia Medica": there are five kinds of alum, alum, alum, alum, alum, and alum. However, alum is more used for medicinal purposes, green and black alum treat scabies and sores, alumum also treats sores and raw meat, and dyes the skin with it, its alum is originally green, the new cave does not see the wind, just like the glass, pottery and the stone gall that people call today, the red color of burning, so the name is alum, out of Guazhou. ”

Then he said: "After research, it was found that alum has two uses in addition to medicinal use. One is used as a fermentation primer for pasta, which can make the pasta more fluffy and crispy when fried in oil, and the other is that it can be used to refine glass! ”

Colored glass, also known as "ruli", is made of artificial crystal (containing 24% lead dioxide) of various colors (the color is formed by various rare metals) as raw materials, and is fired at a high temperature of more than 1,000 degrees. Its color is brilliant and colorful, and its quality is crystal clear and dazzling.

The original material for the production of ancient glaze was obtained from the by-products produced during the casting of bronzes, and then it was refined and processed to make glaze. There are many colors of colored glass, the ancients also called it "five-color stone", in ancient times, because it was difficult for the people to obtain, so at that time people even regarded the glass as more precious than jade.

And the beginning of the Tang Dynasty, Shandong Zizhou (Shandong Zibo) began to make glazed utensils, just because of the backward technology, the output is limited and the process is not high, but the scarcity is expensive, it has become a treasure, now this thing does not have an official at all, and was designated as the royal tribute, the middle and upper grade glazed utensils directly into the imperial palace, and the inferior utensils although into the market, but also the price is amazing, take the city of Tokyo now, a glazed hairpin can be sold for more than a dozen money, a string of beautiful glass beads is often hundreds of runs, so more beads, The flute is a large quantity, as well as hairpins, buttons, etc. Lu, that is, a kind of hairpin used by ancient Chinese women to decorate their hair ears, is used to plug in the hair that is pulled up, or insert the hat, the color is mainly blue, and there are crystal, black, white, and citrine colors.

However, the refining method and materials of the glaze have always been highly secret trade secrets, although some ancient books may be mentioned, but most of them are hearsay, just like Huang Jie just quoted the "Tang Materia Medica", but also incidentally mentioned that "the alum is originally green, and the new cave has not seen the wind, just like the glaze", and the head and brainless can not see the whole picture.

And now, Huang Jie openly said that alum is the raw material for refining glass, and it is undoubtedly the thunder cannon that is once again wildly fired against the calm lake after the medicinal gold!

Just when everyone was stunned, Huang Jie also picked up caustic soda and fire nitrate, and said to everyone: "These two things naturally have other functions, but Poor Dao found that they can also be used to refine glass." And if the three things are properly proportioned, they can refine the pure glass! ”

When everyone heard this, they gasped again, this pure glass also refers to transparent and colorless glass, which can not be called a utensil, but a treasure!

This glaze was praised by the world at that time as the first of the five famous vessels (gold and silver, jade, glass, ceramics, bronze), one of the seven treasures of Buddhism, and then to the Ming Dynasty has been basically lost, only in the legend and monster novels recorded, "Journey to the West" in the sand monk was demoted to heaven because of breaking a glass cup.

And there is a gorgeous legend of the net glaze, it is said that when Xi Shi said goodbye to Fan Li, the crystal tears fell on the chest Fan Li gave the token "Li", this token is the steadfast thing obtained when casting the sword, so the name of "Liuli", from this.

And inside the net glass, large or small, floating or sinking, bubbles are also noble and precious characteristics. These bubbles swim among the crystals, floating between the ribbons of tender watery colours. Even the Ming Dynasty is still very incomplete craft is still protected by the grade, the glass at that time has been very impermeable, so it is called medicinal jade, "Ming system" contains: the emperor awarded to the champion of the ornament is the medicinal jade, more than four products are equipped.

Home is to the daughter, the residence official is to the prime minister, a passage in the "Historical Records" is related to the origin of the glass. It is said that Tao Zhu Gonghou is known as the God of Wealth by folklore, and the legend says that his earliest cornucopia of the God of Wealth is made of glass, so the glass is considered to be a token of the God of Wealth and Fortune.

Thinking about it, Huang Jie actually disclosed the glass in front of everyone, and even the materials of the pure glass, how could it not make people lose their big teeth.

But in the midst of the sound of gasping, I suddenly heard a sharp voice trembling and said, "Dare...... Dare to ask Mr., how many cups in Mr.'s hand are net glass? ”

Huang Jie nodded and smiled, raised the cup in his hand high and said, "Not bad!" It is the pure glass refined by the poor road! (To be continued.) )