Pure nitric acid is generally a colorless and transparent liquid.

Because glassware was extremely scarce, the detachment used to hold acid-resistant clay pots and the like.

However, there are glass bottles with a little nitric acid and the like.

The nitric acid that Deng Fang handed over to Zhang Ran was pale yellow.

This is the normal color of concentrated nitric acid, and of course, it is also directly related to the fact that the nitrate of the detachment cannot be made to a certain purity.

"The nitrification reaction is not over, you must be careful!"

Deng Fang's expression was very serious when he said this, and he didn't usually feel uncomfortable because he didn't look at Zhang Ran very well, and he was extremely solemn.

"Don't worry, I know it!"

Zhang Ran responded with the same solemnity.

After all, although he is not a chemical expert, after all, he has experienced the era of the big explosion of science and technology, and his experience of the danger of nitrification is no less than that of Deng Fanglai.

After taking nitric acid, Zhang Ran asked Wang Changtian to help him withdraw a few silver ingots from the warehouse, and then went to the back mountain to do an experiment on silver nitrate.

Silver dollars can also be used to nitrate to prepare silver nitride.

It's just that the silver dollar may be doped with other metals in the process of minting, and this thing is now harder than the silver ingot, anyway, he brought back a lot of silver ingots when he searched the Cangshui landlord's house last time, so Zhang Ran naturally didn't bother to use the silver dollar again.

The apprentices of the Ministry of Ammunition are busy right now.

Although the work of reloading the bullet has not been carried out because there is no primer, the preparation for the reloading has never been lost.

These days, Mao Diamond and others have done a lot of experiments.

Experiments have already been completed on how to remix the explosives in those bombs into propellants that can be used to fill bullets, and even cut these crude propellant tablets into granules for later use.

The blacksmith and the second workshop also prepared some warheads by turning the mold and other methods, and only waited for a large number of primers to come out, and the last process of reloading a large number of bullets, and the experiment of adjusting the charge of the propellant would immediately begin.

As long as this process is completed, then the detachment can immediately reload the bullets on its own!

It can be said that all the preparations for the reloading of the bullet have basically been completed, just waiting for the primer!

It is definitely not an exaggeration to say that everything is ready and only the east wind is owed......

Seeing Zhang Ran coming, Mao Ran and more than 20 trainees from the Ammunition Department immediately came out and followed Zhang Ran to the back mountain.

The last experiment to make thundermercury was a complete failure, but it was not all meaningless - at least the drill knew that the reaction between nitric acid and silver was extremely dangerous and that there was a high probability of an explosion.

Therefore, the wool drill has also made a lot of preparations for this.

Pliers with long handles of various shapes can clamp the round smooth glass bottle or clay pot like an arm finger, without worrying that the glass bottle clay pot will slip and break, so that people can not directly hold these glass bottles and clay pots, etc., which can reduce the damage caused by accidents to a certain extent.

In addition, Mao Drill also prepared more than a dozen sets of cotton jackets.

This is not a down jacket made by a garment factory, but a special one.

The cotton in the sandwich is compacted layer by layer by the masters of the quilt factory, and it is difficult to cut through the sharp kitchen knife with all the strength of the sharp kitchen knife.

With the help of Mao Diamond and others, Zhang Ran felt like he was wearing a thick armor, and he slammed it twice with his fist and made a thumping sound, and couldn't help but laugh and said: "It's a bit of a protective clothing - Minister Mao, you are really thoughtful!" ”

"It's not the captain you said, it's important to ensure production, but safety in production is more important......

Mao Zhuan said happily, looking like I was just doing some small work, and it was not worth mentioning.

The cadets of the ammunition department laughed too.

Such a thoughtful consideration of everything as Mao Diamond may seem a little wordy to outsiders, but for them who are well aware of the danger of the work of the ammunition department, they are much more relieved because of such a leader.

Long-winded, mother-in-law, sometimes although it is annoying, it is definitely much better than accidentally harming others and yourself.

As the nitric acid in the glass bottle was slowly injected into the glass bottle where the silver ingots were placed, the violent reaction occurred immediately, and the volatile nitric acid formed a white mist in the air, even if you were wearing a mask, the pungent smell still rushed straight to your nose!

"Be careful, if you find something wrong, sink the glass bottle into the river immediately!"

Zhang Ran nervously instructed, and at the same time carefully observed the reaction in the glass bottle.

Last time, the silver dollar had not moved except for a speck of white smoke in the sulphuric acid.

But this time, the reaction in the bottle was extremely violent, and the silver ingots were churning in nitric acid like burnt limestone meeting water, and at the same time, white crystals continued to settle to the bottom of the glass bottle......

During the whole reaction process, everyone's hearts were raised to their throats, which was quite thrilling.

After a long time, the reaction stopped completely.

The originally hard silver ingots all turned into a layer of fine white powder at the bottom of the bottle, turning into a silver nitrate solution.

As long as it is volatilized, the dry powder obtained is what the detachment urgently needs at present - silver nitrate.

Add something to it, and when it is hit, it burns, making it a primer suitable for reloading bullets.

Seeing that the reaction was over, everyone's hanging hearts finally let go, and at the same time there was a burst of excited cheers!

Zhang Ran was more excited than everyone else!

Watching the soldiers hold guns but have no bullets every day, that feeling is like giving birth to a bunch of children, but there is nothing to feed the children, and watching the children starve every day!

And now, with the appearance of this silver nitrate, the problem of ammunition will soon be solved, how can he not be happy and excited?

"This thing is poisonous, but be careful!"

At the same time as Mao Drill asked the students to collect the silver nitrate solution, Zhang Ran instructed Mao Drill: "Also, when adding sulfur and other things to grind, you must have a small amount, don't be afraid of trouble, if you have a small amount, it will explode at most, and if there is an accident in a large amount, it will explode......

Although Mao Diamond is the head of ammunition, and because of the cautious character that he has cultivated since the beginning of the artillery battle, he is extremely careful and responsible.

But after all, his knowledge is limited, and it is impossible to know these things.

If Zhang Ran didn't remind him that if he made a mistake in operation, the ammunition would not have been reloaded, and a few martyrs would be brought out first, Zhang Ran would feel that he would have lost a lot when he thought about it.

"Well, I'll remember!"

Mao Drill said, while asking several students to write down the main points explained by Zhang Ran, he said: "Go back and wait for everything to be understood, I will formulate some regulations according to the main points, as long as I work in the ammunition department, I must operate in accordance with the regulations, and avoid accidents as much as possible!" ”

Hearing Mao Diamond's words, Zhang Ran was very pleased.

Thinking about the appearance of the rough diamond when he was attracted by the wages of two oceans, and the rough diamond in front of him is simply like two people, and the heart is even more gratifying - after these days of tempering, the hair drill is no longer a craftsman who does artillery battles, but has become a rigorous and wise military expert!

Although the trial production of silver nitrate has been successful, it is still only a solution, and it has to go through volatilization and other procedures to become a dry product, and then add substances to become a primer.

But these things, after Zhang Ran explained the general operation process, he didn't need to worry about the rest, and he didn't want to worry about it.

This has nothing to do with learning to decentralize, not being able to do everything yourself.

It is a critical period for them to find and solve problems through their own research, and then grow in the process and improve their level in this regard!

Zhang Ran doesn't say that he doesn't understand much, even if he understands everything, he can't interfere at this time, otherwise it will definitely hinder their growth!

"Captain, the problem on the Primer side is almost solved?"

Zhang Ran hummed a song with his hands behind his back, and came out of the valley with a happy face, and then was blocked by Cheng Dongshan Niu Da, who jumped out of the roadside.

"I'm already thinking of a way to solve the problem of insufficient power machinery, if nothing else, there should be news soon......"

Because Kang Ting was already 80% sure that Anya was a basic female spy, when Zhang Ran said this, he was full of confidence, and he rolled his eyes and snorted: "Do you really think that such a trivial matter can stump me?" I don't know who Captain Ben is! ”

"We've all heard about the steam engine!"

Cheng Dongshan interrupted Zhang Ran's words, and said with a strange smile: "This primer is successful, reloading bullets, we should be able to make our own bullets, right?" This is a bullet case, a warhead, don't you have to use a stamping machine? Captain, you're going to have to solve the problem with this press for me sooner......"

"Hahaha, waiting for me here?"

Zhang Ran looked at Cheng Dongshan, and said with an expression that he wanted to make things difficult for the captain just like you: "I can't get a stamping machine, but we can build it ourselves—isn't it a stamping machine?" What's so hard! ”

"Who made it difficult for you? If it weren't for this, you think I'd be happy to find you? ”

Cheng Dongshan said angrily with a green face: "Make it yourself, captain, you are light, the upper lip touches the lower lip, anyway, I can't make it myself, if the captain can make it, then you can build one for me - our second workshop does not have high requirements for the stamping machine, as long as it can stamping the cartridge shell and stamping the warhead......

"Yes, yes, even a bullet has to be turned over by our blacksmith room, I'm fed up - I'm surnamed Niu, not really Niu, Captain, you can't point to me for everything, you have to think of a way!"

Niu Da echoed with his head on the side, and blocked the road with his big waist and bulging eyes, with a captain, don't you want to fool anyone today, if you don't explain this press to our brothers today, then don't think about the past expression.

"Look at the two of you, just for a stamping machine, as for the whole thing is the same as robbing the road?"

Zhang Ran snorted angrily, waved his big hand and said, "Come with me, I'll take you to get the stamping machine!" ”