"This is our young master. Why don't you salute the young master quickly?" Zhang Wenguang said.

The old kiln worker hurriedly bowed and said, "The little famous king Yuer, has been a craftsman in the family for generations. I have paid homage to the young master."

"Wang Jianren, get up quickly. You always salute me, but I dare not be accustomed to it. I heard from Wenguang that you are a good kiln, you can burn lime kiln, ceramic kiln, and brick kiln, right?" Zhang Mu asked.

Wang Yuer smiled honestly and said, "I learned to burn kilns from my father at the age of seven. Forty years have passed in a flash. Lime kilns and brick kilns are very simple, and ceramic kilns are a little more difficult, but it is not difficult for me. I don't know what the young master wants to burn?"

"I actually don't burn lime or ceramics. I want to burn gallbladder and alum, this thing is of great use. Can you control the temperature of the lime burner kiln to about seventh floor?" Zhang Mu asked.

"The problem is not very big. The young master is not in this industry. When the clay burns seven layers of fire, it is just a low fire. It can make coarse pottery, such as water tanks and tiles. However, to make fine porcelain, you need to attack the martial fire quickly and assist in the fire, which can be called magnetic tools." The old man smiled.

When Zhang Mu heard this, he found that the wisdom of the ancients was endless. When the fire reached seven hundred degrees, it could be burned into pottery. To burn porcelain, it would take 1,200 to 1,200 degrees before clay could be porcelain be made. It seems that he had a good idea of ​​the ancients' research on fire conditions, so he was too careful.

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

Zhang Wenguang hurriedly called someone to start you to set up blower equipment and ceramic pipelines.

Wang Yuer took Zhang Mu's hat and took a look. The hat was sewn from cowhide. There was a piece of bamboo tube in front. After putting it on, it looked like a pig's nose. He joked: "I will become Zhu Bajie after putting it on."

The craftsmen around him burst into laughter.

Zhang Mu looked up and saw that the gas mask he made was indeed lacking in appearance, but this is the only craft.

The bamboo tube has holes in front and back, and put gauze wrapped in charcoal powder inside, and then use cotton to dip it with alkaline water to prevent respiratory poisoning when burning the kiln. He smiled and said, "The gallbladder is poisonous. When you burn it, you can wear this to ensure that you are fine. If you feel uncomfortable, come out quickly and don't show off. Life is the most important thing."

When Wang Yuer heard that the boss was kind-hearted, she was very grateful and smiled and said, "Don't worry, young master, kiln workers are most afraid of smoking and poison, we will pay attention."

After half an hour of busy work, the lime kiln was finally renovated. Wang Kiln started to lay coal in it. How to lay the coal and how much it was, it was very particular. It was like a mountain, and Zhang Mu did not participate, and hid in the pergola to drink tea and cool off.

Not far from the lime kiln, a large water tank was filled with clean water. The water was all distilled water, sealed with a lid, connected the ceramic pipe into the water tank, and the human-powered windmill on the other side was also ready.

Finally, Wang Kiln Worker put a truck of blue alum on it, started sealing the mouth, and finally ignited it.

As the temperature in the cave gradually increased, Zhang Mu saw that yellow smoke began to emerge from above the cave, and hurriedly ordered someone to start blowing the wind. As the windmill blew the wind into the top of the kiln, the yellow smoke entered the water tank through the ceramic pipe.

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

Repeat this way, let the dilute sulfuric acid in the water tank cool down, then ignite the fire and boil it to evaporate the water and extract a higher concentration of sulfuric acid, pour the extracted sulfuric acid into the empty water tank, and then connect it to the ceramic pipeline again, and repeatedly increase the concentration of sulfuric acid.

It was not until the evening that the kiln of blue alum was burned, and Zhang Mu finally got the semi-water tank sulfuric acid.
Chapter completed!