ps: Ask for collections. By the way, I ask for a recommendation ticket. Thank you.

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For two or three days in a row, Zhang Mu was recuperating at home, and on the fourth day, the ceramic pipe that he ordered to be burned came.

Zhang Mu thought about making glassware, and there were records of making glass in ancient times, which was called colored glass at that time, but I don't know why it was not promoted.

However, now this technical condition is not mature, and the ceramic firing technology is ready-made, so it is used first.

Back in the Ming Dynasty, Zhang Mu found that the ancestors actually had a lot of good things, but as a result, everything was inferior, and only the high reading was ruined.

Not to mention anything else, such as the famous Tang knife, its production process was transmitted to Japan and preserved, becoming a famous Japanese sword, but the Central Plains can no longer find the skill of forging Tang knife.

No matter how good things are, they are just strange and obscene skills, compared to Kong Chengren and Meng Yuyi, they can't be on the table, and the wisdom of the ancestors has been wasted in vain, and it is a pity to think about it.

This kind of concept that has been inherited for thousands of years, if it wants to change, it is very difficult in this Ming Dynasty, where the thinking is imprisoned.

If you want to change these things, you have to reach the most authoritative scholar class, so Zhang Mu doesn't want to do so much.

It's like a sentence that Zhang Mu has heard in modern times, smoking two pieces of five red gold dragons, living in a rental house, and worrying about national affairs.

If you can't stand it, you can't do it, the world is peaceful, and you work hard to make money to live your life well, which is better than anything else.

One day in the future, you will be in a high position, and it will not be too late to worry about it at that time.

After waiting for a while, Zhang Mu arrived at the Dongshan Quarry, and saw the clanging of craftsmen on the hillside, Zhang Wenguang hurriedly explained: "This is all to recruit refugees from the north, and the young master gives a lot of wages, so they also work hard." ”

After the establishment of the Ming Dynasty, Zhu Yuanzhang hated these people for supporting Zhang Shicheng and Chen Youliang, so he ordered the wealthy families of Songhu to move to Fengyang, the capital of Songhu.

Every year, when the green and yellow are not connected, they will organize a group to go north to go home to ask for food, so there is the famous Fengyang flower drum singing: "Say Fengyang, Dao Fengyang, Fengyang is a good place, since Emperor Zhu, ten years to nine years of ......." ”

Zhang Wenguang simply recruited them and paid them wages, which was also a good way to cut off labor.

Zhang Mu was injured in the back, so Zhang Wenguang sent a slave to carry the stretcher to a thatched pergola near the lime kiln, Zhang Mu carefully recalled the process of heating the blue alum to sulfuric acid, and the most difficult thing in the middle was temperature control.

The temperature of this kiln can burn lime, and the temperature is absolutely enough, but to keep it at 700 degrees, it will be troublesome, because there is no thermometer at this time, and it cannot be accurately controlled, all depending on the experience of the kiln workers.

If it is 700 degrees, the blue alum decomposes into copper oxide and sulfur trioxide, but no matter how high the temperature is, the sulfur trioxide is very unstable, and it will decompose into sulfur dioxide and oxygen, which is useless.

As for the blower and collection equipment, they have been solved, and the ceramic pipe is used to do this.

Zhang Wenguang then called an old potter, the old potter looked over fifty years old, dark-skinned, tattered and filthy, and saw Zhang Mu is also submissive, at first glance he is an honest craftsman.

"This is our young master, don't hurry up and salute the young master." Zhang Wenguang said.

The old potter hurriedly said: "The little famous king fish, the family has been a craftsman in the kiln for generations, please say hello to the young master." ”

"Craftsman Wang, get up quickly. You keep saluting me, and I don't dare to do it. I heard Wen Guang say, you are a good hand at firing kilns, lime kilns, ceramic kilns, and brick kilns can be burned, right? Zhang Mu asked.

Wang Yu'er smiled honestly: "I learned kiln burning with my father when I was seven years old, and forty years have passed. Lime kiln, brick kiln are very simple, ceramic kiln is a little more difficult, but it is also difficult for the old man and me. I don't know what the young master wants to burn? ”

"I don't actually burn lime, I don't burn ceramics. To burn gall alum, this thing is very useful. Can you control the temperature of the burnt lime kiln to about seven layers? Zhang Mu asked.

"It's not a big problem, the young master doesn't know if it's in this business, the clay burns to the seventh layer of fire, that is, it is simmering, and it can make rough pottery, such as water tanks and tiles. However, in order to make fine porcelain, it is necessary to attack quickly with fire and assist with simmering, which can be called magnetic. The old man laughed.

Zhang Mu listened, sure enough, the wisdom of the ancients is endless, the fire burned to seven hundred degrees, it can be fired into pottery, to burn porcelain, it takes to 12 or three hundred degrees, the clay can be porcelainized, it seems that the ancients have a very good way of studying the fire, he is more careful.

"Okay, you put this on, let's burn a kiln first. Wen Guang, go and greet everything, I'll wait here. Zhang Mu said.

Zhang Wenguang hurriedly beckoned people to start erecting blast equipment and ceramic pipes.

Wang Yu'er took Zhang Mu's hat and took a look, this hat is sewn from cowhide, and there is a bamboo tube in front, which is the same as a pig's nose after wearing, so he joked: "After wearing it, it will become Zhu Bajie." ”

The craftsmen around them burst into laughter.

Zhang Mu looked up and saw that the gas mask he made was indeed a little lacking in appearance, but it was only this process.

The bamboo tube is opened before and after, and the charcoal powder is wrapped in gauze inside, and then the cotton is dipped in alkaline water, which can prevent respiratory poisoning when the kiln is burned, so he smiled and said: "Bile alum is poisonous, you wear this when you burn him, but you can keep you fine, if you feel uncomfortable, come out quickly, don't be reckless." It's life that counts. ”

When Wang Yu'er heard that the owner was kind-hearted, she was also very grateful, so she smiled and said: "Don't worry, young master, the potter is the most taboo about tobacco and poison, and we will pay attention." ”

Half an hour of busy work before and after, finally the lime kiln transformation was completed, Wang kiln workers began to lay coal in it, how to lay the coal, how much to pave, are very particular, interlaced such as across the mountain, Zhang Mu did not participate, hiding in the pergola to drink tea and enjoy the coolness.

Not far from the lime kiln, a large water tank was placed, which was filled with clean water, which was distilled water, sealed with a lid, and the ceramic pipe was connected to the water tank, and the human blower on the other side was also ready.

Finally, Wang kiln workers put a cart of blue alum on it, began to seal it, and finally ignited it.

As the temperature in the cave gradually rose, Zhang Mu saw that there was a stream of yellow smoke coming out above the cave, and hurriedly ordered people to start blowing wind, accompanied by a blower to blow the wind into the top of the kiln, and the yellow smoke entered the water tank through the ceramic pipe.

There was a wooden disc with wheels under the tank, and after an hour, the first tank was pushed away, and then the second tank was used.

Repeatedly, let the dilute sulfuric acid in the water tank cool, and then ignite the fire to boil, to evaporate the water to extract a higher concentration of sulfuric acid, let the extracted sulfuric acid be poured into the empty water tank, and then let the ceramic pipe be connected again, and the concentration of sulfuric acid is repeatedly increased.

Waited until the evening, when the blue alum in a kiln was burned, and this Zhang Mu finally got half a water tank of sulfuric acid.

Use a ceramic spoon to get a little out and splash it on the ground, and suddenly the grass and trees there sneered, and then withered, Zhang Mu sneered: "Lao Tzu sulfuric acid is in his hand, whoever provokes me again in the future will splash him in the face." ”