The Ministry of Chemical Industry is located in the copper smelter.

"Team Zhang, are you here? Look at what you've done for the detachment, you've worked hard......"

As soon as he saw Zhang Ran, Xu Jiunian trotted all the way over to say hello, and there was no longer half of the previous arrogance on his face, and the flattery made Zhang Ran goosebumps.

This guy is simply a typical example of toasting without eating and drinking!

Although he was extremely disgusted with Xu Jiunian in his heart, Zhang Ran was still very polite on the surface, and only after dealing with it with kindness did he smile and said: "Master Xu, you said that it would be nice if you were like this earlier, and we wouldn't have been so embarrassed between us......

"In the past, Xiao Lao'er ate too much lard and was blinded, but fortunately, Captain Zhang, you have a lot of adults, and you don't care about Xiao Lao'er......"

Xu Jiunian said with a dry smile: "Now that Xiao Lao'er is deeply inspired by the thoughts of the Eighth Route Army, he has been completely enlightened, and he has changed his past wrongs, and he will definitely do his best to do his best for the revolutionary cause of our detachment, and he will be ...... after death."

"It's not as serious as Master Xu said, the revolution is not a dinner party, after all, we still have to respect the principle of voluntariness!"

Zhang Ran said with a smile: "Master Xu, as long as you do your job well, don't cause trouble to the detachment, and don't make an inch, the salary I promised you here will never be less than half a point for you, and I will never deliberately make things difficult for you......"

"Yes, yes, Captain Zhang, you are really an adult, and the little old man is ashamed of himself......"

Xu Jiunian was a bit of a sycophant again, but when he saw Zhang Ran's departing back, the resentment in his eyes was undoubted.

"Xu Jiunian, this guy, has a honey-bellied sword, you must not take it lightly because of his few kind words!"

Waiting for Zhang Ran to come over, Deng Fang lowered his voice and reminded.

"Don't worry, Uncle Deng, although you are much older than me, when it comes to understanding people, I won't necessarily lose to you!"

Zhang Ran smiled and said: "What is he Xu Jiunian, I have long seen it clearly, just with his level of two sides and three knives, if he wants to fool me, he has no ......."

In the officialdom a few decades later, the complexity of the human heart is much more complicated than in this era, and his trick of Xu Jiunian is not enough to see at all.

can handle it easily in such an officialdom, how can Zhang Ran take Xu Jiunian in his eyes?

On the side of the Ministry of Chemical Industry, in order to cooperate with Zhang Ran to solve the problem of serious shortage of ammunition as soon as possible, another trial production of pure sulfuric acid is already underway.

Because of the expansion of the base area, the demand for chemical fertilizers is unimaginably large.

Through flue gas purification, the production line that can produce low-grade sulfuric acid and ammonia that can be used to make phosphate fertilizer does not dare to stop and transform now, after all, once the work is stopped, it will definitely affect the production of phosphate fertilizer and ammonia fertilizer, so that Zhang Ran wants to use these fertilizers to increase grain production, use the summer harvest season of the first year, and increase grain reserves as much as possible before the devil hits to ensure food security, so Deng Fang and those chemical trainees have to think of another way.

Their method, very, very simple.

That is to build a small tower cylinder method sulfuric acid preparation production line.

This set of small sulfuric acid preparation production line does not prepare sulfuric acid by the method of flue gas purification at all, but directly uses the method of peroxide combustion in the sulfur box to prepare sulfuric acid.

In fact, the production of sulfuric acid alone in this way was actually feasible from the beginning.

It's just that Zhang Ran's ambition was too big, and he wanted to produce ammonia fertilizer while smelting copper, and he also prepared sulfuric acid by the way.

It's kind of a little bit of a sense of earning money while standing.

I didn't expect that the process would become much more complicated because of this, and it would have to be restricted by the fact that the copper smelting furnace could not be stopped casually.

Originally, if there had been an expert with a considerable understanding of the chemical industry, this detour could have been completely avoided.

But Deng Fang, the only chemical expert, can only be said to be at the average level of this era, and he has never even heard of the preparation of sulfuric acid by the tower cylinder method before meeting Zhang Ran, so where can he have the ability to correct the mistakes made in Zhang Ran's plan?

Now I can think of this, it is entirely because in the process of extracting and preparing sulfuric acid from the flue gas of the copper smelting furnace using the tower cylinder method, he has mastered the relevant process and completed a relevant knowledge upgrade, so as to use his professional knowledge to draw inferences from one example.

Therefore, the detour pointed out by Zhang Ran is actually not in vain.

Now, after a period of understanding and research on the original tower cylinder method, and the research and improvement of reducing agents and other aspects, Deng Fang has accumulated a wealth of knowledge about the preparation of sulfuric acid, and has a considerable grasp of the new tower cylinder acid production line, after three or two adjustments, at most half a month, pure sulfuric acid can be prepared!

After the pure sulfuric acid preparation process is completely mature, the current small sulfuric acid preparation production line will be expanded into a large-scale tower sulfuric acid production line, and then the pure sulfuric acid will be prepared from energy sources!

At that time, all kinds of high nitrifying explosives and so on can be produced continuously because of the successful preparation of pure sulfuric acid!

Because of this, Deng Fang has become less and less concerned about the chemical level of Zhang Ran's two knives.

After spitting and proudly telling Zhang Ran about the grand blueprint that he could prepare pure sulfuric acid in half a month at most, and after a year, he could stably prepare nearly 100 kilograms of pure sulfuric acid and nitric acid every day, and prepare hundreds of kilograms of high explosives, Deng Fang squinted his eyes and hummed at Zhang Ran: "Fortunately, I am here, if I can achieve the output I said by relying on the level of your two knives alone, I don't know if the Year of the Monkey ......is gone."

I'm Nima!

Hearing this, Zhang Ran was extremely annoyed, and said in his heart Lao Tzu, the head of the Jindong detachment, you old man Deng didn't care about the majesty of me, the person in charge, and Lao Tzu put up with it, after all, this thing can't be eaten as food.

But can you think about what it means to be a draught and not forget to dig wells?

If Lao Tzu hadn't taken the lead in proposing this tower cylinder method, what would you have said in front of Lao Tzu that pure sulfuric acid would be mass-produced in half a month and a year?

However, he was annoyed, and Zhang Ran was still very excited that Deng Fang would be able to produce pure sulfuric acid in half a month!

Although their current small column sulfuric acid preparation line is still experimental, even if it is successful, the pure sulfuric acid produced per day is only about one kilogram.

For the current level of ammunition demand of the detachment, the output of one kilogram of sulfuric acid a day, made into high nitrifying explosives, is simply a drop in the bucket.

But for Zhang Ran, just this output of one kilogram per day has already solved the big problem of the detachment!

It is not enough to use this kilogram of sulfuric acid to make high explosives, but it is enough to use it to produce nitric acid, and to make a thundermercury primer with silver nitrification and to reload bullets!

Thinking of this, Zhang Ran is beautiful snot bubbles came out.

Therefore, he decided to forgive Deng Fang for offending him between words, and just glared at the other party fiercely as a warning, saying that this time the leader will forgive you, but not as an example!

Deng Fang's jaw went up to the sky, not only did he not care about Zhang Ran's warning, but he was probably proud that he could humiliate Zhang Ran well.

Zhang Ran was too lazy to take care of Deng Fang, and hurriedly asked people to take him to the warehouse to see how many copper ingots had accumulated in the warehouse for a while.

The reason is very simple, this reloading bullet is available, and if you make your own bullet, it will be fast!

In history, for a long, long time, the Eighth Route Army could only survive by reloading bullets, and it was able to make its own bullets and use them in actual battles on a large scale.

As for getting rid of reloading bullets completely, all the original bullets were used......

I'm sorry, not to mention the War of Resistance Against Japan, even the internal war after that was fought was not completed.

Such a situation is not due to the fact that the military level of the Eighth Route Army has never met the requirements - after all, as long as you can make the first bullet, it is impossible to have any technical difficulty in making 10 billion rounds.

But that's exactly what happened, why?

The reason is simple, there are no raw materials!

Or to put it more simply - lack of copper!

And the situation on the side of the detachment is the opposite, they have copper first, but no technology!

Now as long as the sulfuric acid comes out and can reload the bullets, then the last rope that strangled the neck and prevented the detachment from making bullets by itself will naturally be loosened......

The production work at the copper smelter has been going on for five months!

Although the copper content of the copper ore in Jianzishan is not high, it is a poor mine, and the copper smelting method of the copper smelting furnace is also a soil method, and the efficiency is not high.

But after a few months, the total weight of the refined copper ingot reserves in the warehouse is still infinitely approaching the five-ton mark!

Five tons of data sounds quite shocking.

But in fact, it's only 10,000 catties!

On average, the copper smelted by the local copper smelter in a day is only seventy or eighty catties - in this way, it will be much colder!

After all, for the sake of such a little copper, hundreds of people are spinning around for this thing, and it is definitely a loss-making business.

But in this era, the value of seventy or eighty catties of copper is by no means as simple as converting it into money!

Because the copper of this era represents the bullet!

In the case of 6.8 caliber bullets with the largest consumption, one kilogram of copper can make at least 40 bullets, and in the small copper smelting furnace of the detachment, 3,000 rounds of ammunition can be made in one day of copper!

What does it mean for the three guns that are pressed to the extreme, shooting one, two, three, and shooting?

Not to mention that as long as the detachment does not collapse, this copper smelting furnace can continue to be produced!

After all, according to Zhang Ran's understanding of the Jianzishan Copper Mine, although the copper content of this copper mine is not high, its reserves are not too small - anyway, with such a mining method of the detachment, it is enough for the detachment to mine for more than ten or twenty years, not only to fight the little devils, fight the civil war, and even survive until the beaten Lao Mei returns to his hometown......

Thinking of this, Zhang Ran looked at the five-ton copper ingot and laughed wildly, if he didn't care about the people around him, he would have wanted to roar at the top of his throat, little devil, it seems that your family Ran Ye came back this time, and God didn't like you at all, so he sent your family Ran Ye back to clean you up......

He felt that the time had come for the development of the military industry of the detachment to prepare for great strides - for example, to prepare for making bullets for himself!