Chapter 71

In the midst of everyone's puzzlement, Zhu Mingzhong continued.

"In the future, you can use a two-foot-long bamboo tube, don't hit the bamboo knot at one end of the bamboo tube, drill a few holes in it, and then stuff in some cotton, and then wrap the stones, fine sand, and charcoal with a cloth, tie them with strings, and then stuff them into the bamboo tube, so that the water after several filters will be cleaner......"

When explaining to them how to filter water, Zhu Mingzhong thought in his heart that maybe some water purification filters could be made for use in the army, after all, in this era, if the safety of drinking water can be guaranteed, the occurrence of many diseases can be reduced.

You can make some in retrospect, and these things are worthless anyway.

After the water in the pot is added, the next thing is simple, it is nothing more than to start a fire and boil, after the fire is raised, Zhu Mingzhong constantly uses a wooden shovel to scratch the nitrate in the pot,

Zhao Shiqi and the craftsmen on the side who had been making gunpowder for five or six years and more than ten years were all surprised to see this scene. They had no idea what the garrison was doing.

Could it be that the garrison is not satisfied with the nitrate they have refined, and they have to refine it again? In the confusion and incomprehension of everyone, after the snow nitrate in the pot boiled in the iron pot, Zhu Mingzhong was seen using a wooden shovel to take a little nitrate water and pour it down.

After repeating this several times, when the nitrate water turned into a wax-like strip and no longer dripped downward, seeing that the nitrate had been boiled, Zhu Mingzhong hurriedly ordered.

"Immediately turn off the ignition!"

After the fire in the furnace was extinguished, Zhu Mingzhong observed the wax-like nitrate in the pot, and after it was no longer boiling, he instructed Zhao Shiqi.

"Bring me the charcoal powder!"

When Zhao Shiqi slowly poured a pound of charcoal powder into the pot, Zhu Mingzhong kept stirring with a wooden shovel until it was completely mixed, Zhu Mingzhong felt the temperature of the nitrate in the pot with his fingers, feeling that it was only slightly hotter than his fingers, and then poured in a certain amount of sulfur powder and continued to stir.

"Zhao Dongjia, this is wet-mixed gunpowder, which is safer than mixed gunpowder, and the raw materials are more fully mixed and the medicinal power is greater!"

Although Zhu Mingzhong prefers to use a wooden drum equipped with wooden balls to mix gunpowder, so that the raw materials can be mixed most fully, but because the wooden drum has not yet been made, this wet mixing method is used for the time being, but even so, compared with the traditional mixed medicine, it is also much more powerful.

"Alright, now take out the medicine and put it on the stone mill!"

"Yes, yes......"

Zhao Shiqi only responded, made more than ten years of gunpowder, he didn't understand these at all, just only obediently, the bluestone roller on the stone roller is an ordinary bluestone roller, but the grinding plate is made of wood, when more than a dozen catties of gunpowder poured on the grinding plate, a worker pushed the stone roll.

"Roll it with a stone, until the medicine is gray and white, the longer the grinding time, the greater the power of the medicine!"

In addition to the "unlicensed traveling doctor", as a standard otaku, if there is any advantage, I am afraid that Zhu Mingzhong has read too many miscellaneous books, and this gunpowder manufacturing method is what he learned from e-books such as militia blasting manuals, when crushing gunpowder, spraying water on the gunpowder from time to time, half an hour later, the gunpowder that was once black turned gray-white, and then granulation.

In the absence of granulation equipment, the most primitive method can only be used, the hammered gunpowder is put into the porcelain basin, poured into the rice soup and then stirred with a wooden shovel, until it is mixed into a ball that can be formed by hand, and then rubbed back and forth with the holding of the pill to pass through the sieve, so as to obtain a gunpowder particle of about one millimeter in size.

The granules obtained by granulation have sharp corners and a rough surface. During transportation, the sharp corners will be broken due to vibration, which will cause the particles to be easily worn. So further processing is required.

Zhu Mingzhong also instructed Zhao Shiqi and others to put gunpowder into the leather drum, the leather drum is installed on the turntable of the pottery pot, and then keep stepping on the pot leather drum to rotate at high speed, with the rotation of the leather drum, the sharp corners of the medicine particles are grinded off, so that its surface is smooth, reduce its sensitivity to friction, and can also fill the small holes on the surface, make the outer surface of the gunpowder particles dense and reduce the drop of the powder particles during transportation, and the rolled down particles can also play a certain moisture-proof role at the same time, and even improve the power.

The tumbling gunpowder is poured into the cotton bag, so that the powder on the surface of the gunpowder particles is removed, and the two ends of the bag are tied to the horizontal plate of the drum wheel frame. When the shelf rotates, the gunpowder that accounts for about 1/4 of the volume of the cloth bag falls from the lower end of the cloth bag to the upper end, and then falls from the upper end to the lower end, and the surface of the medicine particles is wiped clean by the cloth, and a part of the powder is withdrawn to the outside through the cloth hole, and a part of the powder is attached to the cloth.

The last dozen catties of gunpowder like millet grains were placed on the cloth, and began to dry the water in the medicine under the noon sun, and after an hour, Zhu Mingzhong picked up a small handful of gunpowder granules, and when he rubbed his hand, he could hear a clear rubbing sound, and when he let go of his hand, he couldn't see the falling gunpowder, and then he showed a smile on his face, looked at the craftsmen around him, and spit out two words.

"It's done!"

This gunpowder is granulated gunpowder! Its power is far greater than powdered gunpowder, and it is exactly what Zhu Mingzhong needs!

Perhaps the power of these gunpowders is far less than that of later generations, but at least compared with the gunpowder of this era, there is a certain improvement, after all, this pharmaceutical method is made by combining the experience of hundreds of years in later generations.

"Zhao Dongjia, do you remember this method? In the future, we will follow this method, and when there are conditions in the future, we will use a better method! ”

A better approach would be to further purify nitrate and sulfur, which was the only way to increase the power of gunpowder, and of course to use wooden drums and large stone mills, now ...... Let's keep it simple!

"Little obedience!"

After Zhao Shiqi and the others obeyed Zhu Mingzhong's orders, Zhu Mingzhong left the gunpowder workshop and walked towards the iron foundry.

"Tell your lordship, recruit the general to conquer Zhenjiang yesterday......"

What the!

Has the general conquered Zhenjiang?

The news brought by the herald made Zhu Mingzhong's expression change suddenly, he didn't expect it to be so soon, now that Zhenjiang has been captured by Zheng Chenggong, the last obstacle to Nanjing has been removed, and in this case, the time left for himself is even shorter......

Zhenjiang, Zhenjiang, after Zhenjiang is Nanjing, his brows are tightly locked, Zhu Mingzhong's expression became solemn, and there was only one thought left in his heart.

Is there really enough time?

Well, what is the effect in this militia manual, Speechless is not an expert, and it is not clear, but at least it should be better than the soil mixture, it should be slightly worse than the machine mixture, and the machine will be mixed in the future...... Ask for recommendations, ask for collections...... Don't dare to drive anymore...... Next time you fly!