Chongzhen and the others had passed through a distance of 500 meters and could already clearly see the lime plant. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 info said that it is a lime plant, but in fact, it does not have an independent plant structure like later generations, and it is relatively simple. The main raw material for refining lime is limestone, which is decomposed into quicklime after high temperature, so the main structure of the lime plant is the kiln body for firing, and the quality of the kiln body largely determines the quality of the lime produced.

In the huge and complex miscellaneous manufacturing bureau, the lime plant is in the inconspicuous northeast corner, and there are many kilns distributed. The main structure of the lime plant consists of a kiln body and a towering smoke tower on the kiln body. The kiln body is divided into two layers, the furnace wall is built with mud, the purlin is used to plaster the mud as the stove, the stone is loaded with manpower, the upper layer is used to hold limestone, and the lower layer is used to place straw and wood as fuel. During limestone firing, the temperature of the entire kiln body is very high, so the kiln body needs to be carefully inspected before firing the lime. It is necessary to ensure that there is sufficient ventilation in the kiln and the corresponding combustion chamber, and only by ensuring good ventilation can the fuel be fully utilized and the quality of the fired lime can be guaranteed.

Just when Chongzhen and others came to the lime factory to carefully observe the kiln body, it happened to be the time for a kiln of lime to come out of the kiln, and Yang Shan was also busy here just now, so his body was full of dust. Chongzhen had only seen the lime firing process in books before, and had not personally visited the lime factory. Therefore, Chongzhen didn't just want to step forward to take a closer look, this move frightened Yang Shan. Chongzhen didn't know, but Yang Shan knew very well that the lime was still dangerous when it came out of the kiln, and it was covered with dust at the least, and it was injured by the jet of air. If Chongzhen has a slight accident in his own territory, his head will have to move.

"Your Majesty, when the lime comes out of the kiln, due to the imbalance of pressure, it will spray something outward, and if you get too close, an accident will occur, in order to avoid hurting the dragon's body, I implore the emperor to stand far away and watch." In Yang Shan's heart, Chongzhen only came here on a whim, as long as he could appease and serve well, everything would be fine after today, so he was extra careful.

Chongzhen's every move is in Yang Shan's observation range, the slightest change, Yang Shan is ready to protect Chongzhen at any time, he would rather be hurt himself than let Chongzhen make a fool of himself on his own territory. It's not that Yang Shan is so loyal to Emperor Chongzhen, for the little people, the emperor is too far away, and taking his every day seriously is the most important thing.

Chongzhen only remembered that after the lime kiln was burned at high temperature, the internal pressure of the kiln would increase, but after all, he was learning the theory in the book, and it was still much worse than the requirements in practice. Maybe without Yang Shan's reminder, there would be no danger, but it can't be avoided if you get dusty. Now that such embarrassment can be avoided, this stout Yang Shan is still very careful, Chongzhen's eyes once again showed a look of approval, and he stood aside and watched the lime come out of the kiln.

The whole lime kiln is all done manually, and the labor intensity is very large. The Lime Plant of the Miscellaneous Manufacturing Bureau produces very little kiln output, mainly limited by fuel, and although there is a lot of wood nearby, it also requires a lot of manpower to harvest the wood. It also stems from the fact that the lime of this lime plant is in short supply, and more than a dozen lime kilns are basically operating uninterrupted.

Workers first remove the soil in front of the cave, and a lot of dust is generated in the process of removing the soil, so many workers will get lung disease after years of work. As the soil cracked, a stream of air mixed with a large amount of dust rushed out of the cave. For a while, the open space in front of the cave was dusty, and the workers in front of the cave were covered with dust, as if they had just come out of the dirt, and they could not distinguish the outline of their faces, but could only see a pair of eyes in front of them, and the rest of their faces, hair, and clothes were all gray and white.

That scene was quite shocking for Chongzhen and the others who had never seen it in person. The crowd looked at everything in front of them in amazement, and it took a long time to come to their senses. At this time, the workers did not care about the dust on their bodies at all, and directly took out the quicklime in the cave gradually. At this time, the quicklime is not powdered, and it still has the original shape of the stone, but it has become loose and porous.

The workers were working fast, and in just a moment, the clearing in front of the cave was already full of quicklime. Yang Shan observed that Chongzhen was impatient, but only after making sure that there was no danger did he say to Chongzhen: "Your Majesty, there is no danger now, you can go forward and observe." ”

Chongzhen nodded at Yang Shan, which was regarded as a response, and his gaze had long stayed on the quicklime. The quicklime is stacked like a stone, but it no longer has the luster of the original stone, and the quicklime is grayish-white as a whole, and the surface of the quicklime is attached with white powder. Chongzhen stepped forward and picked up a piece, put it on the ground, and crushed it with his feet, and for a while, a whole piece of quicklime turned into powder.