I was engaged in infrastructure construction in the Han Dynasty [Transmigration Book]

Liu Tan is quite familiar with honeycomb coal. When he was young, his family used to burn honeycomb coal for a period of time.

It is not true that this kind of coal has no smoke at all. After all, it depends on the quality of the coal.

His family was poor at that time, and they used the worst kind of honeycomb coal. It is said that it was made of straw and low-quality coal together. It could be regarded as waste utilization, so it also had a little smoke.

As for the more advanced briquettes, it is natural to use anthracite and yellow mud plus some other auxiliary materials.

Because the lowest-grade honeycomb coal is the best to make, and if it is done quickly, it can be used by the people of Shuofang City before winter. It is probably impossible to promote it in the whole northern border country. There is no time, let alone transportation. , I only hope that it will be fully promoted before next winter.

After Liu Tan had someone get some straw, he began to try to make briquettes together with low-quality coal. The first thing was to crush all these things.

Because there is no machine, it can only be crushed manually. The coal is fine, and I don’t know which little clever ghost directly used a stone mill to grind it. Of course, the coal needs to be broken into small pieces before using the stone mill. It's convenient to put it in.

It’s just that coal can be made like this, but straw can’t, it must be chopped up with a knife.

Liu Tan saw how long it would take to go on like this, and then he thought about it, and he simply made a reamer very similar to the shape of the later meat grinder, and directly made a round stone groove, with three handles in the middle. A reamer made of a machete, with an iron shaft in the middle, and a shelf on it, which can be pulled by a donkey or mule.

This will not only liberate manpower, but the speed will be much faster. As for the wear of the tool, there is no way to do it. Even if the tool is used manually, it will wear out.

Liu Tan made this thing at random, and didn't think it was anything special, but when he made it out to test the effect, almost all the people in the county mansion gathered around, even Huo Guang came to join in the fun.

Liu Tan looked at them helplessly: "This thing is nothing special, what are you all doing here? Go back to work!"

After saying the last sentence, he laughed himself, feeling as if Zhou had his upper body peeled off.

Few of these people were afraid of him in the first place, so his smile became even more presumptuous. Li Buyan even stretched his neck and said, "Your Highness, Your Highness, hurry up and let it move."

At this time, the donkeys are already in place. Because a large amount of crushing is required, it is so big that two donkeys must be used to pull the grinder.

Liu Tan asked people to put the lid on. For the sake of convenience, the round stone slab used for the lid was divided into two in the middle.

However, this is a bit rough, and the seal is not so good. Liu Tan reckons that if the straw is broken, it will definitely splash out.

Liu Tan tried it before letting people start it. When the lid was opened, he found that the effect was not particularly good.

Seeing his frown, Huo Guang couldn't help comforting him and said, "Your Highness, don't worry, just cut it a few more times."

Liu Tan shook his head: "No, no matter how many cuts you make, there will always be fish that slip through the net. Well, let's add another layer of reamer."

Fortunately, when he asked people to make reamers before, he asked people to make a few more in advance. He was afraid that the reamers would be damaged if something went wrong during the experiment, and now he can just use them.

The stone trough itself is very deep, and adding a layer of reamers is nothing. Liu Tan directly asked someone to lower the lower layer of reamers slightly, and then separate the blades of the upper reamer from the lower one. Try to form no dead ends.

As for fixing, this is too easy, just make a protrusion and a groove on the cylinder used to wear the bearing between the two reamers, and it can be tightly locked.

It doesn't take much time to add this.

Liu Tan reckoned, this time there should be no problem, but the increase of the reamer means that the power will also increase. He saw that these people were still refusing to leave around the grinder, so he just left by himself. Before leaving, he said Sentence: "You still watch, don't regret it."

Huo Guang and the others ignored him, thinking that Liu Tan was joking with them, so Liu Tan shook his head and left. Before leaving, he said: "Just bring it to me when you're done."

He is busy, how can he have time to stare at this thing all the time?

As a result, after a while, the few people who had just gathered in front of the shredder, each carrying a bag of broken straw, reunited in his study.

Liu Tan couldn't help laughing at Huo Guang's rare embarrassment. Huo Guang asked someone to remove the dust from his hair and said angrily, "Did your Highness do it on purpose?"

Otherwise, why just let them go back without reminding them that they will be inundated with straw crumbs?

Liu Tan did have a little deliberation, but he didn't expect the effect to be so funny. If the people in Chang'an saw this, how could they believe that these are the famous noblemen in Chang'an?

Liu Tan smiled and said, "Okay, don't pick it off, there's no need to go back to take a shower, let someone get the straw out of your hair, and I'll give you half a day off."

Huo Guang stared at Liu Tan for a long time, just when Liu Tan felt that Huo Guang finally couldn't stand him and wanted to beat him up, Huo Guang walked over and patted his head hard, rubbed it again, and said nonchalantly: "Look Your Highness has to take a bath."

Liu Tan:! ! ! !

Is this a human thing?

As soon as he reached out his hand, he touched the broken straws in his hand, and before he could get angry with Huo Guang, he turned around and ran to take a bath.

But in any case, after the problems of straw and cinders are solved, it is how to integrate them.

The most important thing here is the problem of proportion, in which the straw plays a role of ignition, but the combustion efficiency of straw is definitely not as good as that of coal, so the proportion of straw should not be large, but it must be able to ignite quickly.

Liu Tan just tried [-]% coal and [-]% straw, and found that although it can be ignited, it is very, very slow.

In the end, the straw was added to [-]% to make the ignition speed barely satisfactory to him. Later, he tried more ratios. This time, although the ignition was fast and the fire was strong, the burning time was too short, so the ratio was still maintained at [-]% coal and [-]% straw.

It's just that after making it, he found that he had forgotten one more thing - desulfurization.

Liu Tan, who traveled from later generations, understands the importance of protecting the environment. It would take a lot of effort to deal with it after pollution. Not to mention, the current soil erosion problem in the northern border country does not know when it will be resolved. solve.

Liu Tan didn't have any instruments, and the only thing he knew was the chemistry knowledge he had learned in school.

Slaked lime is needed for desulfurization. After Liu Tan found the source of the limestone, he found that it was really useful. He even began to doubt whether that area was enough for him. If not, he would continue to search.

After the desulfurization is done, and then the briquette is formed, then the surface is treated with paraffin. It should have been treated with heavy oil, but heavy oil is the heavy oil left after the oil has extracted gasoline and diesel oil. Where is the oil these days... he is I know, but there are no conditions for exploitation, and the oil that is easy to extract is in the Persian Gulf. If you want to get it, it depends on when Liu Che can't take it easy and beat down all the Western Regions, all the way to the Persian Gulf.

However, Liu Tan estimates that this is just thinking about it, and it is basically impossible to achieve.

So in the end, Liu Tan chose paraffin wax and tung oil for a try, and when he found it was okay, he chose tung oil.

After the honeycomb coal was ready, Liu Tan asked someone to test it. Basically, the burning time can cover the whole night, which is enough, at least it can keep warm.

However, after the honeycomb coal is ready, there must be a matching stove in order to export the smoke outside.

Even if the briquette is basically smoke-free, it is only invisible to the naked eye. It will eventually produce some harmful substances when it is burned. If it is a confined space, it is easy to poison people, so the smoke must be let out.

It is not so easy to make a briquette stove, because it is not enough to put briquettes in it so that it can burn inside, and it also has a certain heating effect.

Liu Tan is no stranger to this kind of furnace, which is basically composed of the main furnace body, furnace counter, furnace, coal inlet and chimney.

Among them, the stove is the chassis used to collect ashes. Liu Tan tried his best to recall the shape of the stove at home and drew it, and then handed it over to the craftsman.

At first, I thought this matter was over here, but when Liu Che issued an order, Liu Tan suddenly jumped three feet high: "What? Father wants me to go back before Zhengdan? I thought it was just a casual statement !"

Huo Guang calculated the time and said: "It depends on when Your Highness wants to arrive, it doesn't matter if it's a little later, there is still time."

Liu Tan couldn't laugh or cry: "If I knew it, I would have made another kind of briquette!"

Huo Guang was also shocked: "Is there another one?"

Liu Tan didn't know whether to laugh or cry and said, "Isn't that right? This kind of briquette is made of relatively low-quality materials, so that ordinary people can afford it. How can this thing be used by the emperor?"

It's okay if Liu Che doesn't know, but if he knows... I'm afraid he will break his leg!

Huo Guang was also a little nervous: "Is there still time?"

Liu Tan said helplessly: "Hurry up, choose a place for processing first, and let's go hand in hand."

Originally, he hadn't planned to go back in the first year in the Northern Borderlands, but Liu Che didn't write a letter to get him to go back, but directly issued an edict. Could he not go back?

As soon as Huo Guang heard that he was going to choose a place, he immediately asked someone to get the map. He personally selected people to draw the map. Not to mention, Huo Guang had a good eye, and the people he selected had some spirituality.

However, drawing maps doesn't require them to be very good at drawing, as long as they can draw according to the regulations.

Liu Tan looked at the map and found Huo Guang standing next to him staring at him, thought for a while, then turned to look at Huo Guang: "Tell me...do I want to choose a few more places?"

Huo Guang couldn't hold back a smile, then quickly suppressed his smile and said, "Your Highness, you don't have to do it deliberately, you can do it as you want."

Huo Guang analyzed it before. He asked Liu Tan to choose more than a dozen places without mining.

After thinking about it, Liu Tan carefully selected three places, then threw the pen to Huo Guang and said, "One of these three places specializes in honeycomb coal, and the other is a paper workshop. I don't believe that all three have mines!"

Huo Guang took the pen and hesitated for a moment and said, "Your Highness... I don't know if I should persuade you not to say what you said."

He always felt that what Liu Tan said might be a prophecy, but if there were indeed mines, it was obviously good news, but his Highness would probably cry.

Liu Tan was silent for a while and said, "Then... what if there is something wrong?"

Huo Guang smiled and said: "Didn't Your Highness choose a dozen places before? Just choose among them."

Liu Tan couldn't help but slapped his head: "Really, how did you forget those places? No, why didn't you remind me? If I had known, I wouldn't have chosen!"

Huo Guang decisively put away the map and said, "Your Highness, let's choose more places."

After speaking, he turned around and left without giving Liu Tan a chance to leave a map.

Liu Tan looked at his back helplessly, feeling that his skill point seemed a little crooked.

People rely on talent to make a fortune through time travel, but he relies on metaphysics to travel through time. What's the matter, fall!

It is also because of this that Liu Tan doesn't know whether to expect or not to expect mines from these three places.

Huo Guang sent people to investigate the three locations. This time he was smart enough to send out all the craftsmen who are good at identifying rough ores, so that they don't recognize them and ignore them.

The news came three days later, when the county government was holding a court meeting, Wei Buyi came in happily and said, "Your Highness, there are two minerals found!"

For some reason, Liu Tan was actually relieved at that moment—fortunately, there was still one piece left that could be used, which was pretty good.

Now that things have happened, he has been able to ask calmly: "What kind of mines are they?"

In fact, not only is he calm, but everyone else is getting used to it, and the only one who is more interested in mineral types.

Wei Buyi said: "One is iron ore, and the other is cinnabar!"

After Wei Buyi finished speaking, everyone felt a little regretful for a while. They were used to copper ore, agate, a very precious mineral, and coal mine, an undiscovered mineral. Iron ore and cinnabar seemed less conspicuous.

Liu Tan couldn't help crying and laughing seeing everyone's unfinished expressions. What kind of expressions did everyone have? Iron ore and cinnabar are very useful.

In fact, these mines are actually more useful than agate, which is the plaything of the rich after all.

"Are you sure there is no mine in the remaining place? If not, let them start construction. It won't be too late." Liu Tan coughed lightly and changed the subject.

Wei Buyi scratched his head and said: "There is no mine, but there are very beautiful stones. I chose one to be polished and brought it to His Highness. Doesn't His Highness like these stones?"

He still remembered that Liu Tan gave Liu Che stones back then, and he thought Liu Tan liked them, but he didn't know what Liu Tan would give him.

Liu Tan originally wanted to explain, but when Wei Buyi handed over the dark green piece with a transparent stone, he almost couldn't take it out—isn't this a fucking tourmaline?