What did Liu Mingqi think of?

Of course it is a magical artifact for coal heating, honeycomb coal!

Many young people have never seen honeycomb coal, but it is a memory that has been around since the 1990s.

Small bungalows in many cities in the north, and until the 21st century, many people used honeycomb coal, even the people in the capital!

Not to mention that it occupied a great importance in the lives of ordinary people in the 1970s and 1980s.

Basically, one says one, in all cities, every household in all sizes and cities uses honeycomb coal to cook water, cook rice and cook.

This situation was not until the 1990s, after the popularity of natural gas, that honeycomb coal gradually disappeared into the city.

But many places where there is no ventilation, whether in cities or rural areas, will still use honeycomb coal.

A product will not be eliminated for hundreds of years, which shows how convenient and durable honeycomb coal is.

Originally, honeycomb coal has many advantages.

In addition to the shape of the honeycomb is conducive to combustion and releases more heat, it is also easier to store and stack.

It even saves coal raw materials after all, more than 20% of them are clay and quicklime.

The reason for adding clay is to make the shape and strength of honeycomb coal more stable and not collapse when burned.

If you pay more attention to quicklime, it will be added because it is to precipitate the sulfur in the coal and allow the honeycomb coal to burn and reduce the pungent sulfur dioxide.

At the same time, another advantage of adding quicklime is that it can act chemically with carbon dioxide. The residue finally burned will form aS4, which is calcium sulfate.

Many people don’t know about calcium sulfate, but if water is added, it is raw gypsum. When heated to 150 degrees to 170 degrees, it will become ripe lime.

Raw gypsum and ripe gypsum have many functions and are also one of the important raw materials for making cement.

This purpose is not useful in modern times, after all, cement manufacturers will definitely not accept these.

But it just so happened that Miao Yan was about to prepare for the rebuilding of the imperial road?

Liu Mingqi can just take out the gypsum and add it to Wu Yeshuang to see what better effect such a three-combination soil will be.

The people are so happy.

If you spend money to buy honeycomb coal, you can sell the remaining residue to Liu Mingqi. In this way, rounding it up will basically cost you no money!

This is Liu Mingqi. She had to be replaced by another unscrupulous businessman. In the name of helping them clean up garbage, so much plaster can be used for free, and at most it takes a little manual transportation.

It’s not that Liu Mingqi is so noble.

Only those shameless people can compete for profit and make money from the bottom.

...

There are all kinds of craftsmen in Prince Yu's mansion.

After Liu Mingqi returned, she first mobilized a blacksmith to build a single-type honeycomb coal pressing machine.

Directly stuff the viscous embryo mixed with coal, loess, lime and water into the instrument, then shake the machine handle and press it, and a honeycomb coal will be formed.

It doesn't take a minute in total.

Then take the honeycomb coal and put it in a ventilated place, wait for it to dry naturally and then use it after it has dried.

The embryos used to make honeycomb coal are simpler. After the coal is hammered into powder, several materials are mixed in appropriate proportions and then mixed with water to form a viscous shape.

Proportion Liu Mingqi tried about ten methods and felt that the ratio of coal, loess and lime was about July 21. This way, the honeycomb coal made with water was the most solid shape, burned more fully, and would not collapse.

Calculated based on the weight of a honeycomb coal of two kilograms, the price of coal is only 1.68 cents. Adding lime and worthless loess, the cost is less than 2 cents.

Honeycomb coal can not only burn more fully, but also have greater firepower. A family of five can boil water and cook for heating a day, and it is absolutely enough to use five in total. The nearly burned honeycomb coal can also be used to emit heat for a period of time when it is taken to the room.

Liu Mingqi's heart is really not bad. He plans to sell a honeycomb coal for two cents.

This is not not making money.

Because the cost of two cents per before was calculated based on the market price.

I bought 50 million kilograms of coal and 100 million kilograms of coal. Can the price be compared with the retail price of one or two cents of silver?

Surely impossible!

Such a large-scale purchase price cannot even cost a penny.

The same goes for lime, which almost means no money.

There is also yellow mud that costs money, and it is everywhere on the mountains and the ground in the imperial capital.

Overall, even if labor is added, the cost will definitely drop.

Even if Liu Mingqi only had 10% profit in the end, how much does it cost to sell 10 million units in one winter? How much does it cost to sell 100 million units? How much does it cost to sell 100 million units?

As long as the total base is high, you will definitely make more money.

Did you become the richest man in our country if you didn’t see the boss of Nongfu Spring? You can make money like this even if you sell water!

The key point is that Liu Mingqi set such a low price, which determines that he is fighting a price war.

Only with such a scale and such proportions can we make the best and cheapest honeycomb coal.

Others have not spent hundreds of thousands or millions of taels of silver into raw materials like Prince Yu's Mansion, and the single cost of making it must not be less than two cents.

It is more expensive than selling it, so what's the point of selling it for honeycomb coal?

Unless they are making fake and shoddy products, such as adding less coal and more yellow mud.

But in this situation, Miao Yan would only thank God, and then lead people to arrest them and slowly punish them.

...

Bosses of any era like executive subordinates.

Anyone who moved things to the palace on the first day would be happy if he said that he could make a more economical and convenient fuel on the first day, and who would move things to the palace on the third day.

In order to show Jing Hedi's purpose, Liu Mingqi also made a honeycomb coal stove.

The honeycomb coal stove is the type of cylindrical 60 cm high double-layer stove that everyone had when they were young.

Life is absolutely incomplete if you have honeycomb coal alone and no honeycomb coal stove.

The emperor asked Miao Yan to watch with several ministers discussing state affairs in the Qianqing Palace.

Liu Mingqi skillfully ignites the stove and quickly burns the honeycomb coal.

It is unrealistic to just stuff a piece of honeycomb coal for such a high honeycomb coal. After the first piece is burned red, Liu Mingqi quickly pressed the second piece on it.

In order to test the effect, he asked the chef of the imperial kitchen in advance to bring a pot and ingredients, put it on it, and started to boil the soup with a high heat.

After making soup for a full hour, stir-frying dishes.

After stir-frying five or six dishes in a row, Liu Mingqi closed the vent under the stove, so the flame gradually weakened and became insulated.

A group of people gathered around to eat, and until half an hour after lunch, they did not see the honeycomb coal burning out.

After that, everyone turned to the Imperial Study room to talk about state affairs, and the honeycomb coal stove was placed in the middle, allowing everyone to feel the heat emitted from it.

After two more hours, the heat disappeared greatly. Liu Mingqi opened the vent below, took out some honeycomb coal slag, and continued to stuff a new honeycomb coal in, pressing the almost burnt honeycomb coal underneath.

The honeycomb coal stove continued to emit heat again.

Of course, the window was opened throughout the whole process.

The eunuchs outside kept looking nervously inside. As long as someone showed signs of fainting, they would open the door and rush in to save people.

It was not until this time that the emperor and a group of ministers nodded repeatedly, praising the young man.

As the first person in the court, Prime Minister Cao Yi first gave affirmation: "The people who can govern the country's affairs in our dynasty may not be the first, but when it comes to inventing these practical things, I believe that Prince Yu is the best in the world. No one can object to this fact."

"The two pieces of honeycomb coal are fried for a few dishes and kept in heat. They can be used for about four hours. Five honeycomb coals a day should be enough." Miao Yan is more practical, "I just don't know how much the cost of this honeycomb coal of Your Highness?"

Damn Miao Heizi, want to lie to me about the cost of the project?

Liu Mingqi smiled and said, "Mr. Miao, a piece of standard honeycomb coal is about two kilograms. We tested it and the effect is about 30% stronger than the same two kilograms of coal, and the time will be twice as long. The main reason is that it burns more fully and releases more heat."

Miao Yan buried his head in the calculation and said what Liu Mingqi said, and nodded slowly: "No, I have seen the effect just now. I believe Prince Yu will not be fake. But what is the price?"

The boy raised two fingers: "Selling for two cents."

"How many?" Jing Hedi asked in dismay.

"You can buy a piece of honeycomb coal for just two cents." Liu Mingqi replied without hesitation.

A group of people looked at each other.

Miao Yan's breathing immediately became tight, and his chest and abdomen kept rising and falling, and he was obviously very excited.

I can’t even buy two kilograms of coal for two cents. Is Prince Yu selling it at this price? Is it a good thing to do?

No no no no!

Although Prince Yu is kind, he is unwilling to lose money when doing business.

Then he will definitely make a profit when he sells this price.

But why can you make money by selling prices below the cost price?

Miao Yan couldn't figure it out for a moment.
To be continued...