Daqin: When I return from sea, I will offer you a map of the world

Chapter 28 The First Emperor would never allow others to get involved!

Seeing that Jing put it in his mouth without hesitation, and got Zhao Si's affirmation, Wang Li dubiously squeezed a little bit of blue-gray salt into his mouth and tasted it carefully.

"It's done!"

Wang Li was surprised to see the green salt in front of him and the black bittern salt beside him, and kept comparing them. It was hard to believe that the two were actually the same thing.

"This... how reasonable is this?"

"How can the lowest grade of bittern salt be turned into the best green salt?"

Zhao Si smiled and said, "Science."

"Actually, bittern salt is not salt, but bittern salt contains salt. Salt itself is clean. What I do is to filter out the impurities." Zhao Si said.

Do you really want to say that there are no impurities in the salt filtered by plant ash and charcoal?That's impossible, and the quality is definitely not as good as modern table salt.

It’s just that the brine salt in the past contained salt in the impurities, and people would have problems if they ate it. Now after purification and filtration, the salt contains impurities, and there are still some heavy metals and many impurities.

It's just that these levels have reached the level that the human body can barely cope with.

"Then... use charcoal fire to bake? I think it will cost a lot." Wang Li asked.

"That's not true. In fact, there is no need to filter it with cloth. You only need to get some denser sieves to sieve out impurities, and you don't need to bake it with fire. After sieving, use charcoal and plant ash to filter and purify, sieve it again, and finally dry it." Drying can also produce salt. It just requires more manpower." Zhao Si said in a deep voice.

If this thing is to be produced on a large scale, it is nothing more than a large number of people are required to smash the brine salt, then pour it into a large pool for fusion, and then use a dense sieve to sieve the water, and sieve it into the next large pool to remove the insoluble impurities. Filtered.

Repeat two or three times, and the impurities that are almost insoluble in water will be clean, and then use charcoal to absorb pigments and some impurities that cannot be screened out in the next large pool.

After that, it is introduced into the next pond for plant ash filtration and purification.

Then sieve it again and introduce it into the next pond to prepare for drying and salting.

Almost find an area with abundant sunshine, build five or six large ponds, find more people, filter and dry manually, as long as the weather is good, the salt can be produced continuously.

Of course, very laborious!
"That's almost no cost!" Wang Li said directly ignoring the labor cost.

The more primitive the era, the lower the value of labor force, and the cheaper the cost of labor, or even negligible.

What kind of magical skill is it to turn brine salt into a steady stream of table salt, or first-class green salt, only by manpower?

"There are also a lot of bittern salt mines in Guanzhong, so the salt in the whole area may not be able to sell." Wang Li seemed rather excited.

"The brine salt this time still has too many impurities, and the salt production rate is a bit low. You can try to get salt from various salt mines one by one, and focus on the brine salt with high salt production rate first." Zhao Si said.

This way of filtering and purifying, even if there is a certain loss, it will not produce two or three pounds of bittern salt. To put it bluntly, the salt content of the bittern salt brought by Wang Li is too low.

"Is this still low?" Wang Li asked back.

"Turning inedible brine salt into high-quality green salt is more than a hundred times profitable!" Although Wang Li is simple, he is not stupid.

"Where is this a matter of profit?" Zhao Si patted Wang Li on the shoulder.

"You don't plan to let me buy shares for your own use?" Zhao Si asked with a smile.

Wang Li nodded his head as a matter of course and said: "You and I are close, my family has its own salt mine, I will never be greedy for ink..."

Zhao Si waved his hands and smiled, "Go back and ask your elder father!"

Salt iron!

The most important weapon of the country!
This is a new method of salt production!
what does that mean?It means that only large-scale production is required, and it can cause a near-destructive blow to salt fields in various places in terms of quality and output, and reshape the division pattern and ecological environment of salt.

Based on what the First Emperor had done in history, Zhao Si could even figure out what the First Emperor would do.

Gather manpower and material resources in Guanzhong to find halogen salt mines with high salt yield.

Then focus on production, directly align with the big salt producers in the area to deal a devastating blow, and firmly grasp the salt ecology in their own hands.

In this process, whoever touches will die.

It is not difficult to guess the mind of the first emperor. In fact, the really outstanding superiors never shy away from letting others guess their thoughts, or they are often open and honest.

Excellent superiors generally have their own fixed logic of action, and they will not change course easily.

Politics is inherently inferior when it falls into machismo.

This involves the reshaping of the salt ecology, and the first emperor will grasp the lifeline of the empire.

How could Emperor Shihuang have any wavering in this matter?

It is true that the Wang family is the most meritorious noble in Daqin, but the Wang family has no right to intervene in this matter.

As long as there are capable emperors and dynasties in the prosperous age, the control of salt and iron is one-stop.

This is the undoubted lifeblood of the feudal dynasty.

Not to mention the Wang family, even the meritorious nobles at the top of Guanzhong would not want the first emperor to give in.

Wang Li was only aware of the profit, but ignored what was behind the profit.

Zhao Si also had no idea of ​​making salt and steel to sell for money, unless it was a troubled time or the end of a dynasty... Otherwise, in the feudal era, no matter which dynasty it was, it would be extremely risky.

Wang Li was a little confused, and Zhao Si didn't explain too much, but planned to use the saturated crystallization method to further purify the quality of the salt.

This is very simple. There is a limit to the solubility of salt in water. If there is too much, crystals will precipitate.

The solubility of salt does not vary greatly with temperature.

The rest of the water-soluble elements either do not reach the solubility at all, or the solubility changes with temperature, even in a saturated state, it can be guaranteed that the salt is the first pure crystal to precipitate.

Of course, for salt, a liquid with relatively stable solubility, it is not possible to precipitate pure salt crystals by simply raising the temperature and lowering the temperature.

Only the evaporation method should be used.

That is, through artificial heating or natural evaporation of water to reduce the water capacity and break through the saturation, salt crystals will naturally precipitate.

It seems that it is the same principle as boiling water to dry out salt, but it is not.

Drying out the salt takes advantage of the fact that the salt does not evaporate.

And by reducing the water to analyze the crystals, the use of salt breaks through the saturation limit to naturally precipitate crystals.

"Wait! Am I stupid!" Zhao Si slapped his thigh, and Wang Li grinned at Zhao Si.

"You made a mistake!"

"That's right! That's not the point!"

Zhao Si realized it!

If you use the sun-salt method, it is impossible to dry the brine all at once.

It is a process in which the moisture is continuously reduced and the salt crystals are continuously precipitated.

In other words, the first crystals to precipitate in the brine pool are the cleanest salt.

At least in this era, the cleanest salt!
(End of this chapter)