More than a dozen large kilns are lined up one after another, smoking is rising. The guards are busy delivering coke to the kiln entrance to bake bricks. Not far away, someone is transporting stones. A large area has been cleared for stacking. There are also people cleaning the road.
Jia Youcai was directing everyone in a loud voice, in order and in full swing.
Qin Huaidao observed for a while and felt relieved after seeing that there was no problem. He walked to the experimental kiln that was being dug. He had never done anything like this before. He judged and guided everyone to dig the kiln based on his feelings. He also hired some people to help smash the big rocks. He was very busy.
At noon, two small experimental kilns were finally dug.
After the meal, Qin Huaidao came to the small kiln again. The kiln was empty, and he didn't know whether the soil on the kiln wall would collapse. He was unsure, so he asked someone to help him bring the waste bricks that had been fired before, and built a circle around the kiln wall.
When reinforced, it can also play a role in blocking limestone and soil.
Then came the installation of the kiln. If there are too many stones, they will easily collapse. Qin Huaidao asked everyone to first take relatively flat large stones and place them on both sides and behind the kiln entrance. The height should be about one meter, leaving some space in the middle so that the stones can be staggered and matched as much as possible.
, the big stones are pressure-resistant, and they are stacked flat and not easy to fall. They are staggered and not easy to move. I don’t know if I am sorry to do this, so I will do it first.
The empty space in the middle was continued to be piled with stones to form a tilted arch bridge. This space was the combustion chamber, which was similar to burning bricks. Qin Huaidao tried it. The arch bridge was very stable and should not collapse, so he asked everyone to start stacking stones, each one
Try to keep as many holes as possible in the middle of the stone to facilitate air entry and improve combustion.
There were many people and great strength, but the kiln was small. It didn’t take long to install it, and the next step was to burn it. Considering that the stones burned too quickly, they would easily break and cause collapse. It was a new kiln, and the walls of the kiln were made of mud, heavy with moisture, and not strong enough.
Burning bricks also requires a process. Don't dare to burn them too fast. Qin Huaidao asked everyone to start with a small fire.
It was a matter of great importance. Qin Huaidao personally watched it. After two days of burning, he felt that it was almost done. There were no signs of collapse of the stones or the walls of the kiln. It should be stable, so he started to set fire. He did not dare to set the fire directly for fear of something happening. Soon, he discovered that it was above the kiln.
The hot air leaked out from the kiln cap opening and the temperature was lost.
If the temperature cannot be controlled, the limestone inside the kiln will not burn through. I quickly find someone to help thicken the kiln cap opening with soil to reduce heat loss. On the fourth day of firing, I find that the limestone inside the kiln cap opening is white. I don’t understand why this is happening.
Whether it is good or bad, record it first. At night, you will find that the limestone at the entrance of the kiln cap is dark red, indicating that the temperature has risen.
Qin Huaidao thought that the limestone must be burned thoroughly and the temperature must be maintained for a certain period of time. It would not work if it was too short, just like stewing bones. In order to stew bones, in addition to maintaining the temperature, you also need time, so he asked people to continue to use clay to thicken the mouth of the kiln cap.
Leave a small opening for the flame to come out so you can observe the situation inside.
The kiln cap was sealed, and the high temperature inside could not escape. It could only stay and swirl around inside the kiln. I didn't know if it was right to do this, but Qin Huaidao found that the temperature was controlled within the kiln and was increasing, so he quickly recorded it.
After observing for a while, I was worried that the temperature would not be reached and the limestone would not be completely burned and burned to pieces, so I started to increase the fire. I observed the changes inside from the kiln cap opening, and gradually found that the limestone in some kiln cap openings began to sink unevenly, and the fire in the combustion chamber
The color is dark and not bright enough, as if the temperature is uneven.
Qin Huaidao was inexperienced and felt that it would be worse. If the temperature was uneven, it meant that some were cooked through and some were not. It was probably caused by uneven ventilation at the kiln cap. Instead of half-cooking, he might as well stew in one pot and let others help him.
Seal all kiln cap openings to prevent ventilation and suppress the fire before proceeding.
Considering that the door of the kiln will also leak temperature, even the door of the kiln was sealed to ensure that the temperature was sealed and stable. I prepared for the worst and stayed in the ancestral hall without going anywhere to review the firing process of the past few days.
, every link was recorded, and I was going to go back and dig two more small kilns to try, but I didn’t believe it.
One day later, Qin Huaidao was not sure whether the kiln was finished, so he decided to take a look. After hearing the news, everyone came to watch and wanted to know whether the firing could be successful. Qin Huaidao asked people to open all the kiln caps and the kiln door, taking into account the cooling.
It may not work if you go too fast. Let's make the opening smaller and open it slowly.
The temperature in the kiln was more than 1,000 degrees, and it would take a long time to cool down slowly. Qin Huaidao asked everyone to enlarge the kiln cap opening every other hour to cool down in an orderly manner.
Until early the next morning, when the temperature had completely cooled down, everyone gathered at the entrance of the kiln again. Qin Huaidao asked everyone to dismantle the kiln. When they saw the kiln full of lime, they were surprised and went up to grab a handful to check. The familiar colors, the familiar touch, the familiar
The taste makes my heart calm, and a sense of accomplishment arises spontaneously.
Everyone didn't know what it was and what it was for. Seeing Qin Huaidao showing a relaxed expression, they all breathed a sigh of relief. Jia Youcai asked curiously: "Young Master, is this a success? What is it for?"
"This is very useful. Find a place to store it. Remember, you must wear a mask to carry the things inside. Wear two more layers and move gently. Once these things enter the eyes and are inhaled into the body, it will be very serious. Can anyone help carry some?
Water comes." Qin Huaidao shouted, limestone is of great use, but it is also very dangerous. Everyone must be aware of the seriousness and cannot act recklessly.
The water was brought quickly, and Qin Huaidao grabbed some and threw it into the bucket. The water bubbled and boiled, scaring everyone and retreating quickly, thinking it was a witchcraft.
"Did you see that you must not let this lime enter your eyes? If it does, you must not wash it with water. You can only open your eyelids and blow hard, then close your eyes without blinking and wait for it to recover naturally. Have you noted it down?"
"Remember it." Everyone looked at the bubbling water with lingering fear and quickly wrote it down.
"Okay, everyone, don't be afraid. As long as it doesn't enter your eyes or be sucked into your mouth, everything else will be fine. This thing is of great use. You will know in the future that starting from today, we will dig kilns to burn lime. In addition, I need manpower to build a warehouse.
Store these things, Mr. Huang." Qin Huaidao said and looked at Mr. Huang.
"No problem, organize manpower immediately." Huang Lao agreed.
The quality requirements for the warehouse are not high. It is for temporary use. Just mix lime and clay and it can be used as an adhesive. There is no problem building the wall. A lot of bricks were burned. Qin Huaidao hired someone to help and demonstrated on the spot. Everyone saw the bricks.
I am building a pile of bricks and I am worried that it will collapse. Can this thing be used?
Everyone knows that this kind of brick wall must be made with glutinous rice mortar, which means boiling glutinous rice, pouring the slurry into Sanhe soil, and mixing it with Yang Tao Teng juice. It is extremely expensive and is only used by nobles and the imperial court.
Can you afford it? Can the ashes of burned stones be mixed with clay?
It takes time to recognize new things, and it is very difficult to explain. After building a small section of wall, Qin Huaidao said: "Do you see it clearly? Just do it. Find an open space to dig a foundation, put stones under the foundation, pour mixed clay and crush it.
, and then build the wall with bricks, Mr. Huang, please bring in more manpower, and hurry, once it rains it will all be ruined."
"Arrange it immediately." Mr. Huang quickly agreed. Regardless of whether it is useful or not, if the young master wants to do it, it will be done over there.
Soon, a large group of people came over and leveled a large area of open space first. Qin Huaidao asked people to find ropes to straighten them and draw lines with lime. Everyone followed the lines to dig the foundation. The warehouse did not need to be built too high. The foundation was about one foot wide.
, one foot deep is enough, put in hard stones of matching sizes, put clay mixed with lime in and trample it to death, then you can build a wall upwards.
The winter rain will come from time to time. It is not suitable to leave lime in the open air. We must hurry up. Qin Huaidao asked people to light the fire on site and work overnight. He also gave everyone guidance from time to time. The warehouse is only for temporary use. Don't worry about it being too beautiful. Just be strong.