As for completely pure table salt, there is no need to think about it. It is simply impossible to achieve in this era.
But then again, this can actually grade the salt.
For example, the first batch of salt crystals that naturally precipitate after being exposed to the sun before being completely dried are the highest quality.
The further back, the worse.
The first batch of precipitated salt crystals can be sold as luxury goods.
Salt is a national treasure, but high-quality salt is also a luxury product.
For example, the shaped salt used by Wang Li at a banquet for Zhao Si.
It is shaped like a crouching tiger, and even carefully carved by craftsmen. Each piece can be said to be valuable, and it looks very good when placed on the table.
According to common sense, the first batch of naturally precipitated salt crystals should not contain too many impurities, and the color should be closest to pure white snowflake salt, rather than the bluish-gray mixture of various impurities formed after complete drying.
“Get some big pools!”
Just do it if you think of it. Anyway, we are in Lantian camp and there is no shortage of people.
Wang Li enthusiastically dispatched people to help Zhao Si open the pond.
"You also need a sieve, the finer the better!"
Large-scale mass production is definitely different from experimentation. Zhao Si put forward everything that came to mind.
Just the pool alone opened six square pools measuring ten feet.
Although Guanzhong is not an important salt producing area, there are quite a few brine salt mines that people like you said cannot be eaten.
Wang Li sent people to dig out brine salt and transport it back...
By the time the pool was opened, it was already dark.
Zhao Si had seen the sky during the day, and it should have been sunny in recent days unless there were any accidents.
The weather is good for the salt-drying method, otherwise it will be a big deal if it rains.
As for the method of boiling salt, it has been popular in Qidi as early as the Warring States Period.
The people of Qi, who face the sea to the east, have long known how to boil the sea to make salt.
However, Zhao Si needs crystals that naturally precipitate through slow evaporation of water, and the sun-salt method is also more economical. It is nothing more than a comparison of the sky.
"However, for large-scale salt production, I am afraid that both the drying method and the boiling method must go hand in hand, otherwise it will be too dependent on the weather. As for boiling salt, honeycomb briquettes seem to be able to replace wood and charcoal!" Zhao Si thought to herself.
The utilization rate of coal in ancient times was extremely low, but there was not much coal mining in ancient times. Especially in the pre-Qin era, there were many open-pit rich mines. The cost of making salt from honeycomb briquettes was much lower than using firewood and charcoal.
Modern knowledge has a subtle linkage!
"It seems that briquettes have to be put on the agenda." Zhao Si said.
In this era, the rich open-pit mines are gone, and the cost of coal is very cheap. After the use of briquettes and coal becomes popular, it will inevitably replace firewood and charcoal.
As for air pollution? I've traveled through time and you still talk to me about environmental protection?
Because making a drinking pool is not a small project, and it requires ramming soil, it cannot be completed in a short time.
Ramming the soil once may not be enough. It is estimated that you have to ram it back and forth several times, soak it with water, and then continue ramming it.
If the soil is not rammed and water is poured in, it will turn into a mud pit in a short time, and it will be exposed to the salt of a hammer.
The pond should be large and shallow, and try to ensure the largest sunshine area so that the salt can dry out quickly.
It was getting dark in the blink of an eye, and the soil for several pools had just been dug and tamped.
I have to tamp it back and forth several times later. This thing can't be rushed. It is dried in the sun, soaked in water, tamped with soil, dried in the sun again, soaked in water again, and tamped again.
There is no way, the rammed soil will be completely soaked in salt water.
"What if the coastal areas are suitable for salt drying..." Zhao Si scratched his head.
He ignored one problem. Coastal areas had been infiltrated by sea water for thousands of years, and originally there were many saline-alkali lands.
In some places, it is normal for salt to form on the ground when the sun dries it.
The land in the Guanzhong area is relatively fertile. If the salt water cannot be soaked up, the loss will become very large in the process.
But the good thing is that this is an experiment, so it doesn’t matter if the loss is a little more.
The night was getting late and there was no way to continue the construction. Zhao Si was also sleepy early and went home early to sleep.
However, Wang Li had some thoughts about Zhao Si's salt production. He wanted to ask his father Wang Ben, but he was afraid of being scolded if he disagreed with him. After much deliberation, he decided to go back overnight to ask his eldest father Wang Jian.
Now Wang Jian no longer lives in Xianyang. After Wang Jian succeeded in conquering Chu, he was extremely close to retirement. As his body was not as strong as before, he also resigned from his official position.
In short, Wang Jian didn't want to work anymore and couldn't continue, and the First Emperor probably didn't want to stay either.
The two brothers exchanged polite greetings, and Wang Jian went back to the countryside to retire.
Fortunately, the Lantian Camp was not in Xianyang City, so it was faster for Wang Li to pat the horse all the way.
After passing numerous identity checks along the way, Wang Li returned home and was led to Wang Jian's house by his servants.
Wang Jian was holding a small black dog and leaning against the charcoal stove to warm himself.
Because of his physical condition, Wang Jian is very afraid of the cold. Even though spring has already begun for a long time and the weather is no longer cold, Wang Jian still likes to have a charcoal fire before sleeping at night.
"Is the weather still cold?" Wang Li grabbed the little black dog by its neck and threw it to the ground. Then he knelt down and massaged Wang Jian's calves through the animal skin.
"As we get older, our body heats up slowly." Wang Jian said slowly, squinting his eyes.
Wang Jian is sitting on a jade stool.
This was one of Wang Jian's many trophies. Something he had never seen with his eyes in the past was now with Wang Jian all day long.
Wang Jian's legs are bad and he can no longer sit on his knees.
Kneeling, as the official sitting posture in this era, is actually a relatively strenuous task.
"Han Zi" mentioned it.
Duke Ping of Jin and Tang Yan sat out and came out. Uncle Xiang entered, and the Duke took a step. When my uncle asked about it, he said, "When I was in Tang Dynasty, I had pain in my feet and was so numb that I dared not stretch." '
It can be seen that sitting upright is very tiring.
And the seat that assists kneeling and sitting was born naturally.
There are generally two types of seats. One is a small saddle that is hidden under the buttocks.
The other is Ping Ji, where the legs are hidden under Ping Ji, and the elbows or hands are used to support and exert force to further reduce the pressure on the legs.
As for Wang Jian's legs, even if he used a seat when kneeling, they would not last long.
Now I can only squat on a bench or lie on the bed.
Wang Jian patted the head of Wang Li, who was kneeling beside him, narrowed his eyes and spoke slowly.
"Why come back at starry night?"
Wang Li rubbed his grandfather's legs and said, "I'm confused. My friend asked me to go home and ask my uncle."
Wang Jian was silent, and after a long time he signaled Wang Li to continue speaking.
Wang Li quickly explained today's events to Wang Jian in detail.
From Zhao Si concocting various tools to turning inedible brine salt into high-quality green salt.
Zhao Si guessed what Wang Li was thinking and asked Wang Li to ask his eldest father.
Wang Jian squinted his eyes comfortably without even opening his eyelids.
"Can't touch, can't touch..."
Wang Jian patted Wang Li on the head.
"Our family is not short of money."
(Updated, please ask for a follow-up reading, a monthly ticket, a recommended vote, the top priority is to follow the reading, please use your little hands, I will update twice a day without interruption, slow-paced story, everyone will read it slowly. Now The story and the entire social environment of Da Qin are still unfolding. I used to write from the lower level to the upper level, but it feels really different to write from the upper level to the lower level for the first time.)
