Black powder is a civilian explosive, and the temperature of deflagration can reach more than 1000C at the moment of deflagration, and the destructive power is extremely strong. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

Gunpowder is generally made from a mixture of sulfur, charcoal, and fire nitrate (potassium nitrate), where sulfur and charcoal are used as fuel, and fire nitrate is used as an oxidizing agent.

The raw materials for the preparation of gunpowder are nitrate, sulfur and charcoal, and the mass ratio of these three raw materials is 15:2:3. This formula is provided by the chemical doctor water friend "Tiger White 02".

Sulfur and charcoal are easy to buy, but fire and fire are rare items.

In this era, there are folk people who make fire nitration, so how did the ancients make fire nitrate?

First, go to the manure pit (toilet) covered with mud bricks, scrape off the nitric acid sludge (i.e. alkali sludge) with the highest concentration, dissolve it in water, put it in a pot and boil, and then pour it into a wooden basin to allow it to solidify. This makes nitrate.

Soil near pigsties, toilets, etc., often contains a lot of organic matter. After these organic matter decays, it is then reacted to by nitrifying bacteria to form nitric acid. Nitric acid further reacts with arsenic, calcium, and magnesium in the soil to form potassium nitrate and its calcium, magnesium, and nitrate, which is the source of nitrate.

From here, it can be seen that the yield is not much higher, and the content of fire nitrate (potassium nitrate) in the nitrate is very low, so there is less gunpowder that can be made.

But fortunately, Zhang Fan has a system, and he can buy it directly from the system, although it is expensive, at least it saves time and manpower, and it will not lose money.

With the raw material recipes all available, coupled with the guidance of several chemical doctors, the craftsmen recruited by Zhang Fan to go up the mountain quickly made black powder.

At first, there were some accidents when the dosage and proportion were not controlled, but the professionalism of the ancient craftsmen was unparalleled, and they soon learned their lessons, mastered the techniques, and concocted a satisfactory black powder.

The power of gunpowder made this group of ignorant ancients frightened and dumbfounded, and it took a long time for the yellow stomach to come back to their senses, and they asked in a trembling voice:

"Dare to ask your lord, what is this, it can open mountains and crack stones, and it is so powerful."

"Is this...... Let's call it thunder! Zhang Fan also took a name with a very bad taste, "Nine Heavens Xuansha, turned into divine thunder, brilliant heavenly might, thundering the sky and cracking the earth, it is for the thunder." ”

Huang Gao sighed: "Thunder and thunder...... It's a fitting name. Adults are pedantic, and their subordinates are beyond their reach. ”

"Fourth master, you're naughty again."

"Fourth Master, do you think we haven't seen Zhu Xian? Isn't this the true trick of Excalibur and Thunder? ”

"9494, the Nine Heavens Xuansha, turned into a divine thunder, brilliant heavenly might, and led it with a sword."

"Anchor, do you really think Xiao Ding doesn't watch Firefox TV?"

"Wow, it turns out that there are so many fellow Daoists who are immortals. What do you think of "Qingyunzhi"? ”

"It's enough to see my most handsome political commissar Li, and the others are floating clouds."

"Ten years of immortal dreams, a green cloud ruined."

"Fan Yao pushes all his life."

"The original party expressed a little disappointment, after all, after waiting for ten years for the drama, I have to finish watching it crying......"

……

With gunpowder blasting, the speed of mining ore is naturally several times faster, although there are also initial fears and constraints, and there are also a few small accidents, but Zhang Fan has developed a new strategy - pay them wages according to their output, and they can also use the money to redeem themselves, restore their identity, and leave the mine to live freely.

Until then, these miners were slaves, so they were naturally unpaid. Under the temptation of money, they burst into unimaginable enthusiasm for work, and their production efficiency was further improved.

Before finishing work every day, Zhang Fan came to the mine and sold the ore mined that day to the system, looking at the constantly beating personal account balance, as high as seven million gold beans. Zhang Fan is full of confidence in the next anti-bandit campaign:

Money talks. The one who dares to go against me, can labor and management use money to smash to death, do you believe it or not?

……

The night is deep, the moon and stars are scarce, everything is silent, and the cool breeze is cold.

A servant girl came over and saluted the foot trainer and said, "Miss, the general invites you to go to the back mountain to admire the moon." ”

Mo'er waved her hand to let the maid stand back, and said strangely:

"Miss, it's not fifteen or sixteen today, what is there to see in the crooked moon? I think he must have bad intentions, so why don't we go? ”

The step trainer smiled, "You talk a lot!" If you don't go, just stay at home...... Comb my hair quickly. ”

"Oh!" Mo'er obediently came over to comb her hair......

……

Soft like flocculent, light as silk floating clouds, clustered with the bright moon rising, clear light reflects the surrounding into a round of colored aperture, deep and shallow, if there is nothing.

"Master, are you happy these days?"

"Happy!" There was a hint of wisdom and childishness in her starry eyes, like a pure angel who did not understand the world.

"The experience of more than two months is richer and more wonderful than the sum of my past 17 years, and every day is very fulfilling, and this is the most important period of my life."

The moon is like water, pouring broken silver on the ground.

The cold moonlight sprinkled on the beautiful face of the foot trainer, the delicate skin was white and red, the pink cheeks were flushed, and under the long and thick eyelashes like feathers was a pair of clear and clear, black and white eyes.

Fair and soft, the skin that can be broken by blowing can be blown, faintly revealing a layer of xenon argon white light, with a happy smile on the lips, smiling without troubles and dust, without lust for love, like fog in the mountains, drifting between the trees, unpredictable on the palms, out of the world.

"It's so beautiful! It's so beautiful that you can't breathe! ”

"My heart is full!"

"Clouds want clothes, flowers want to look, and the spring breeze blows Revlon. If it weren't for the jade mountain, it would meet Yaotai under the moon.

"Clear water out of hibiscus, natural carving."

"The hands are like soft wattles, the skin is like clotted fat, the collar is like a grub, the teeth are like a rhinoceros, the head of the mantis is like a moth eyebrows, the smile is clever, and the eyes are beautiful."

"Light Luo small fan white orchid, slender waist jade belt dancing veil. It is suspected that the fairy came down to earth, and she looked back and smiled at Xinghua."

"The rhinoceros has bright teeth, and the double moth has green eyebrows. The red face is like a lotus, and the plain skin is like condensation.

"There are many escapes, lightness and non-self-control. Taste the peerless color, and restore the posture of the city. ”

"A large wave of poets and immortals is coming—"

"666, if you don't agree with each other, you will become Li Bai Dufu!"

……

Zhang Fan said gently: "You close your eyes first, I want to give you a gift." The step trainer obediently closed his eyes, and Zhang Fan made a gesture.

"Bang!" With a loud bang, the red fireball erupted into the air, and then exploded, crackling and scattering, revealing colorful points of light that dragged its long comet tail down and annihilated. The instant sparkle reflected in the corners of the four corners.

Grains of golden sand shoot out, blooming proudly in the air, red, orange, yellow, green, blue, indigo, purple, everything. The night sky is decorated with great beauty.

Fireworks come and go, compact and rapid, deafening, dizzying, with its majestic atmosphere, stunning magnificence impact vision, conquer the psychology.

……

Since so many fireworks craftsmen have been recruited to go up the mountain, it is not bad to please the girls in addition to completing the task!

"It's beautiful!" The foot trainer showed a bright smile as childlike innocence.

Zhang Fan suddenly had a sense of fullness, and murmured secretly:

Use my three fireworks in exchange for your life......

――――

Thanks to Qin Nixuan for giving a little reward of 200 starting coins