Go back to the Ming Dynasty to be a thousand households

Chapter 48 Dawuzhaibao Cement Plant ([-])
"Da Shao, Zhangjiaping Mountain currently has eleven mining sites, eight lime kilns, 170 miners, and 55 factory workers. It can mine 125 tons of sticky stone mines and burn 2125 tons of lime (one load is not enough) to two hundred catties). As for the cement, it has not been fired yet.”

Deng Zisheng led Huang Laifu and others to inspect the mine and various places. He was a little apprehensive at the beginning of his speech, but later his expression became more and more stable, and his speech became more and more calm and powerful.

Huang Laifu nodded. This achievement was within his expectation. Of course, he would not dare to compare with those cement companies with an annual output of one million tons of cement in the future when he will burn cement in the future, or even compared with some small cement factories in the future. The annual production of tens of thousands of tons of cement is also incomparable.But considering that this is the Ming Dynasty, with historical limitations, this achievement is already very good.

As for the fact that the cement hasn't been produced yet, Huang Laifu doesn't have to worry. At present, in this Zhangjiaping Mountain, just mining and burning the lime and clay is enough to bring him a relatively large profit.In many areas in later generations, they all got rich by mining and exporting ore. The more famous one is Shanxi Coal Mine.In fact, Huang Sihao and others didn't know about this Zhangjiaping Mountain mine before, otherwise they would have already sent soldiers to mine.

Generally speaking, iron mines, copper mines, gold and silver mines and other minerals were strictly regulated by the Ming Dynasty. No one would pay attention to such small limestone and clay mines.In fact, at the end of Hongwu in the Ming Dynasty, the government had already lifted the ban on private mining of iron ore, which made the private mining of Ming Dynasty very active.

What restricts the Wuzhaibao officers is that they didn't know that there were minerals in this area before, and their thoughts have been confined to some fields for generations. Few officers will pay attention to this kind of minerals unless they are nearby. There are some large mines that have been mined.

Moreover, without professionals, even if they know that there are limestone minerals in Wuzhaibao, they cannot find out where the specific mines are.The same is true for Huang Laifu. According to the mineral distribution map of Wuzhaibao in his computer, although he knows that Zhangjiaping Mountain is rich in limestone resources, but where are the specific mines, he still invited special mineral processing craftsmen.

At this time, ore dressing in Daming generally used technologies such as disk separation, ore grinding, and magnetic separation.Pan separation method is to use the power of water to eliminate impurities and select concentrated ore.Place in a wooden tray for elutriation.The ore grinding technology is: first crush the ore, then use a mortar to grind it into fine powder, then use a large bucket to hold water, put the ore powder into the water and stir until a certain degree, some fine sticky floats on the water surface, and some plum sand is suspended In the water.Then wash the fine sticky and plum sand with a sharp-bottomed pan, and then get the concentrate.Magnetic separation is to use the gravitational force of a magnet for selection.

Of course, some experienced craftsmen can detect where the mine is just from the surface conditions, but such people are rare after all, and Huang Laifu can't invite such people.

After finding the ore spot, it was time to mine. At this time, the mining technology of the Ming Dynasty generally used traditional methods such as chiseling, hammering, and ax chopping.Blasting is to use fire to burn the ore deposit, then pour it with water, and use the law of thermal expansion and contraction to make the ore burst and decompose, and then mine.As for the explosive mining method, gunpowder is used to explode the ore deposit, crush the ore, and carry out mining.

Of course, Huang Laifu chose the explosive method with the fastest mining speed. This also made the gunpowder in Zhangjiaping Mountain continue to be fired, and at the same time, the gunpowder stored in Wuzhai Fort disappeared at an extremely fast speed. It seems that after a while, I'm going to the Zhenxi Wei Station to buy it.

Huang Laifu and others came to a lime kiln. At this time, the lime kiln was calcining limestone ore. The so-called lime kiln was actually a round hole dug on the hillside, with a depth of ten meters and a diameter of about five meters. The kiln door is made of hard stone, of course, limestone cannot be used for the kiln door, otherwise it will be burnt down.

The fuel used for burning lime adopts a layered system. The bottom layer is a grass layer, above the grass layer is a coal layer, on the coal layer is limestone, on the limestone is a coal layer, and on the coal layer is limestone again, so that the kiln body is filled.In addition, there are some ropes braided with straw, which are arranged in several pieces from the bottom to the top, as air holes for ventilation up and down after burning.

After such preparation, it can be ignited and fired. Generally, the lime in a kiln needs to be burned continuously for three days and three nights before it can be burned into quicklime.Due to the continuous operation, the miners usually build a small grass shed next to the lime kiln to rest.

At this time, a craftsman from Kelan Prefecture invited by Huang Laifu was watching the fire at the kiln mouth. When he saw Huang Laifu and others coming, he wanted to salute. Huang Laifu waved his hand to signal him to continue.

It was extremely hot beside the kiln door, Huang Laifu stood there for a while, and immediately sweated profusely, and hurriedly dodged far away, Gu Yunniang even dodged further away.Only the craftsman from Kelanzhou was still watching the fire intently by the kiln door, which made Huang Laifu feel relieved that the 2 taels of silver per month would not be wasted.

After the lime was burned for three days and three nights, the color of the limestone changed from green brown to white, and it became quicklime.Then seal the kiln door with stones and mud, and leave the kiln after natural cooling.In this way, the lime is practiced.

After the lime is smelted, it will be transported to the large vat of lime in the warehouse.Huang Laifu saw that most of the workers in this area were women. They talked and laughed loudly as they worked. Many of them were covered in white, and it was really dusty. Some women were smarter, so they covered their faces with aprons .

This made Huang Laifu think about it, should we make some masks and distribute them to the people in these cement factories? Otherwise, if they work in this environment for a long time, they may suffer from work-related diseases such as lung disease .After wearing a mask, it will play a somewhat protective role.

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After seeing various lime kilns, Huang Laifu and others, accompanied by the supervisor Deng Zisheng, went to the cement factory and the cement kiln for inspection.

The cement factory is also full of dust. The most conspicuous thing is that there is an old Junshen and a Guan Gong inside.

This is a strange phenomenon in Ming Dynasty. At this time, no matter what industry, such as clothing stores, clothing stores, silk shops, leather shops, coal shops, pork shops, foot shops, etc., all worship Guan Gong as the God of Wealth.This made Huang Laifu puzzled, what does Guan Gong have to do with the God of Wealth?
But at this moment, Second Master Guan was covered in ashes, looking quite pitiful.

People are coming and going in the cement plant, and everyone is busy.According to Huang Laifu, the factory workers covered in white powder are crushing limestone and clay in a certain proportion, grinding them into raw materials, adding an appropriate amount of gypsum, and transporting them to the nearby cement kiln for calcination. Burn out the cement that Huang Laifu said.

The cement kiln is not far from the factory. It is an ordinary vertical kiln cement kiln. It is a brick kiln with a masonry structure. The white clay is used as the mud base, and the materials are added and unloaded manually. of.When the firing starts, the tall chimney at the end of the kiln emits thick smoke, and the smoke and dust around it are blown by the wind for a while.

Master Liu from Kelan Prefecture stood respectfully beside Huang Laifu. His face was smoky, black and purple. When a new powder was calcined, he took part and mixed it with sand. Mix the stone with water to see how strong it is.

Master Liu concentrated on mixing. Generally speaking, the time required for cement to be mixed with water until it starts to set is called the initial setting time.The time required from adding water and stirring to the completion of setting is called the final setting time. The initial setting time of cement should not be earlier than 45 minutes, and the final setting time should not be later than 12 hours.Otherwise, the firing of this cement will fail.

In the end, Master Liu shook his head in disappointment, obviously the firing this time was not successful, and Huang Laifu was also a little disappointed, but he had no choice.This kind of chemical thing is not like the physical thing like making a waterwheel. It must be experienced before the fire can come to fruition. There is no rush.

And although Huang Laifu found the cement firing formula from the computer and theoretically knew how to fire cement, it would definitely not work for him to do it himself. The farm plan can be well said, but even if he is asked to work in the fields by himself, he can't do it even for any young man in Wuzhaibao.To do these things, you have to rely on these craftsmen.

Seeing that the matter was not successful, both the steward Deng Zisheng and Master Liu looked a little terrified, especially the steward Deng Zisheng repeatedly pleaded guilty to Huang Laifu. Just work hard. But don't let up, you have to remember to keep this matter in mind, understand?"

Deng Zisheng and Master Liu repeatedly nodded in agreement.

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Lao Niu: Sanjiang will change the list soon, friends who haven't collected this book should collect it quickly, so as not to be inconvenient to find it when the time comes.

Another: Since the book was uploaded on the 1st, until the end of today, it has been constantly updated every day. It is really rare. Let me praise myself, ^_^

(End of this chapter)