People in Datang have been expelled from school

Chapter 698 Checking the Sand

Tie Da said very loudly to his two younger brothers.

Tie Er and Tie San immediately swore that they would never tell this matter.

Li Zheng didn't care if they said it, it was just sand, and he needed specific sand to make glass.

It doesn't mean that you can just find a handful of sand and burn it.

Looking at the dozen or so blue-green crystals that Tie Da took out.

Li Zheng knew that the glass he fired this time was a failure.

There is too much iron in these silica sands.

Tie Da wanted to say something more, but found that Li Zheng left in a hurry again.

Fortunately, there is a lot of silica sand in Chang'an area, and other silica sand can be replaced.

Li Yifu finally rectified the warehouse.

Looking at the things brought by Li Yi's house, Li was writing the words "laboratory" on a wooden board, "It's fine in the future, don't let people come near here."

Li Yifu responded, "Understood."

In the next few days, Li Zheng began to fight Shasha to death.

Dozens of villages around Jingyang and around Chang'an have tried it, both high slopes and sand in the mud.

Li Zheng was burning some ore in the laboratory, and Li Yifu and Xu Jingzong were sitting together, talking about the women in Pingkangfang.

Suddenly there was an explosion in the laboratory, followed by a puff of smoke.

"Chang'an order!" Xu Jingzong and Li Yifu immediately ran to the laboratory.

Li Zheng coughed in embarrassment, walked out of the laboratory and said, "It's okay, it's normal."

Li Yifu said worriedly: "Chang'an Ling, what are you doing?"

Li Zheng washed his face, took a sip of water and said, "I'm doing some chemical experiments."

Xu Jingzong said: "If there is danger, we can let others do it. Why did the Chang'an order take the risk? There was such a big commotion just now."

Li Zheng wanted to explain to Li Yifu and Xu Jingzong that this was a normal phenomenon caused by heating potassium permanganate.

It's just that it has been burned for a long time, and it will explode if it is heated for too long.

Xu Jingzong looked at the laboratory again, and the whole laboratory was in a mess.

The pots and pans were blown to pieces.

For some reason, Xu Jingzong always felt that Chang'an Ling was making something terrible.

Li Yifu asked people to clean up the laboratory.

Xu Jingzong watched Li Zheng put some black powder into a kind of water.

This kind of water is a little thick and looks a little cloudy.

Like an oil.

Watching Li Zheng pour the black powder into the oil, the oil started to burn.

Seeing Xu Jingzong's eyes widened.

It can burn without an open flame.

"Chang'an Ling, this...why did it catch fire."

Li Zheng said: "It's just a very simple knowledge of chemistry."

"It's very simple? What..."

Looking at the flames, Li Zheng felt hesitant. It seemed that the concentration of potassium permanganate seemed to be enough.

Leading the big dog, Li Zheng handed over the laboratory to Li Yifu for refurbishment, and called the big tiger who was in the stable.

Du Hu also raised his beard, "General, are you going to walk the dog again?"

Li Zheng picked up the persimmons on the side and said while eating: "You pull an ox cart, we are going to pull some things."

Duo responded and went to work.

The horses in the stables were grazing leisurely, and some even lay down lazily.

The Longwu Army is a soldier hidden by Li Shimin.

If there is no accident, it is likely that it will not be enabled for a long time.

If these horses are not taken out for a run for a long time, I am afraid they will be raised and useless.

Du Hu came pulling an ox cart, "General, the ox must stay in the village, so let's use horses to pull it."

"So be it."

After Duo unloaded the cattle, he returned them to the villagers.

Then tie the cart to a horse.

Li Zheng led the dog, and Du Hu drove the horse out of the village.

When he came to Longshouyuan, Dahu watched as Li Zheng opened a small cloth bag and poured out some black powder.

Li Zheng mixed potassium permanganate with sand and poured some water.

There was a puff of smoke, followed by a very pungent smell.

Dumb asked curiously, "This..."

Li Zheng said to him: "This is called potassium permanganate, and it can be used to test whether the sand contains iron."

Looking at the green sand, it seems that the iron element in the sand is too much to be used to make glass.

See the big dog to smell the sand reacted by potassium permanganate.

Li Zheng quickly grabbed it, preventing it from smelling it.

The reacted smoke is highly toxic and cannot be smelled directly.

He continued to lead the big dog, and the big tiger followed him all the way to the bank of the Weishui River.

Li Zheng tried the reaction of potassium permanganate with some river sand here.

There are still iron elements, and the sand is almost turning green.

It seems that the sand beside the river bed cannot be used to make clear glass.

All the way from Jingyang to the other side of the Weishui River, west of Chang'an City.

Today's wind is a bit strong, and the wind blowing from the high slopes of the loess has brought a lot of sand and dust.

When he came to a high slope, Li Zheng dug up the outer layer of sand and dug out some of the damper sand inside.

And then potassium permanganate, reaction test.

The big dog stood aside wagging its tail, and Li was pouring some water and watching the sand react with the potassium permanganate.

Another puff of smoke and pungent smell.

After the reaction, the sand didn't seem to turn green, Li Zheng said to Duo: "Here comes the shovel."

Dug brought the shovel from the bullock cart.

The big dog was tied to the side of the cart, and the big dog sat very obediently, as if it was still vigilant about its surroundings.

Li Zheng began to dig the sand.

Dug followed suit.

"General, what are these sands used for?"

Li Zheng said: "For making glass."

Dumb kept busy with his hands and feet: "What is glass?"

"A type of glass."

……

More than an hour later, Li Zheng wiped the sweat from his forehead and dug half a car full of sand.

"It should be enough, I don't need much."

"General, I'm not tired, I can dig again." Duhu said.

Seeing Duhu gasping for breath and talking about digging again, it seemed that he was too tired to work hard.

"Enough is enough, I need too much sand and it's useless, I just make a few things."

Patted Duhu on the shoulder, "Remember this place, you can come back when you need it in the future, let's go back to the village first."

Dumb nodded, "Then go back first."

Picking up the big dog again, the two walked back towards the village.

When I walked to the hunting ground, I saw that the previously messy hunting ground had been cleaned up.

Back in the stables, Li Zheng released the big dog.

The big dog also barked twice towards the stables, as if provoking the lazy horses.

With the sand, Li Zheng came back to the blacksmith shop.

Take out a handful of sand, put it on the stove, let the three brothers of the Tie family continue to calcine the sand.

Tie Da greeted his two brothers to start working immediately.

The bellows also began to pull.

Li Zheng saw that the blue-green glass that had been calcined before was put aside, and there was not a single piece missing.

(End of this chapter)