Xiaoyao Xiaojunhou

Chapter 671 Fairy
Then, he tore off suitable fabric from the two women's long skirts, made a simple "filter", and filtered the coarse salt solution several times to remove as much water-insoluble sediment as possible.

In the end, I got a pot of brown coarse salt solution, with no impurities visible to the naked eye.

After the three of them rested for a while, the quicklime was finished firing.

So, under Zhu Xiuyuan's guidance, the two women brought out an earthen jar, filled it with quicklime, and then poured in an appropriate amount of clear stream water.

Quicklime heats up when it comes into contact with water, bubbling and creating mist... Finally, a paste-like white lime milk is obtained.

Then pour the lime milk into the copper basin, stir it with the coarse salt solution, and then set it aside to let it stand.

The impurities contained in the coarse salt solution are soluble substances represented by "calcium ions", "magnesium ions", "sulfate ions", etc. This is the source of the bitter taste and brown color of coarse salt.

The main component of milk of lime is "calcium hydroxide". After mixing with coarse salt solution, and then stirring and contacting with air, "hydroxide ions" and "carbonate ions" can be obtained.

The "calcium ions" in the impurities of coarse salt react with "carbonate ions" to form "calcium carbonate" precipitate.

The "magnesium ions" in the impurities of coarse salt react with "hydroxide ions" to form a "magnesium hydroxide" precipitate.

The sediment is insoluble in water and can be filtered out with a simple "filter".

As for the "sulfate ions" in the impurities of coarse salt, the "calcium sulfate" formed by combining with the original "calcium ions" in the coarse salt solution is a precipitate, but it is slightly soluble in water, so the removal effect is limited.

After a series of chemical reactions, "magnesium ions" can be removed, but "calcium ions" and "sulfate ions" cannot be completely removed.

Fortunately, "calcium sulfate" is slightly soluble in water, and the content of the two ions in the resulting solution is already very rare.

The operation just now was as fierce as a tiger, but it was actually mainly to remove impurities such as "magnesium ions", that is, "magnesium chloride".

The salt produced in this way has only a slight bitter taste, which can be completely ignored unless you are very particular about it.

It can be said that this salt is infinitely close to modern table salt.

At least, as far as Zhu Xiuyuan knew, although it had some impurities, its color was also pure white.

From the appearance, it is difficult to distinguish it from modern refined salt!

As for these two impurities, it is very complicated to completely remove them, and it is completely impossible to do it under the current conditions.

For example, "calcium ions" can be completely removed with "sodium bicarbonate", but where can he get "sodium bicarbonate", commonly known as baking soda?

Let's talk about "sulfate ion", this one is even more complicated. It is also "barium chloride", "sodium carbonate" and "dilute hydrochloric acid". Under the current conditions, it is almost impossible to achieve.

Zhu Xiuyuan can only do this step.

This step seems simple, just add lime milk to the coarse salt solution.

But in fact, this is already at the level of the "Republic of China" period. Compared with the era when even the "salt-sun method" did not appear, this technology is simply unparalleled.

It can be described as "across a thousand years"...

The standing copper basin was filled to the brim with a mixture of coarse salt and lime milk. It was placed on a stone pier in front of the cave and placed safely.

Next to the stone pier, Zhu Xiuyuan, Dong Shuzhen, and Kou Wanwan were all gathered around, staring at the mixture in the copper basin.

Especially the two girls, Dong Shuzhen and Kou Wanwan, did not understand Zhu Xiuyuan's series of "magic operations" at all, and they had too many questions in their heads.

But now, they didn't even know how to ask. They could only open their eyes wide and stare at the water in the copper basin.

"Husband...husband, what should we do next? Do we want to guard this basin of water?" Dong Shuzhen suddenly asked.

Next to him, Kou Wanwan was also confused and wanted to know what to do next, so she turned her head and looked at Zhu Xiuyuan.

"That's right!" Zhu Xiuyuan suddenly became serious and solemn: "Now is the most critical moment. If there is any mistake, everything we have done today will be in vain!"

"Ah, so serious!"

Dong Shuzhen's big eyes were rounded with fear, she couldn't help but cheer up, and her little face tensed up. "Don't worry, husband, the important responsibility of guarding the copper basin will be left to me!"

Kou Wanwan next to her couldn't help but tense up, staring at the water in the copper basin.

But suddenly, Kou Wanwan heard bursts of suppressed laughter, coming from Zhu Xiuyuan. He seemed to be very uncomfortable with it, and was about to lose his breath.

Kou Wanwan immediately looked sideways.

Sure enough, Zhu Xiuyuan had turned his back to the two women, his shoulders hunched. Judging from the state of his arms, he seemed to be covering his mouth tightly.

Kou Wanwan was stunned for a moment.

My heart says, Master, why is he laughing?

At this time, Dong Shuzhen also noticed something strange about Zhu Xiuyuan. She raised her head and glanced at Zhu Xiuyuan's back, then quickly lowered her head to stare at the copper basin.

She has never forgotten the "important task" her husband gave her, which is to keep an eye on the copper basin, preferably without blinking.

"Master...why are you laughing?" Kou Wanwan felt strange and couldn't help but ask.

"No...nothing...hahahaha..."

It's good that Zhu Xiuyuan didn't speak, but once he opened his mouth to speak, he was discouraged and couldn't hold back anymore, he leaned back and forth, laughing so hard that he bent over.

"Young Master, this copper basin... we don't need to guard it, right? Young Master... you... are teasing us!"

Kou Wanwan's eyes suddenly lit up, she already understood the source of Zhu Xiuyuan's laughter.

However, Zhu Xiuyuan just kept laughing, turned around and stared at the two women, and then started laughing again.

At this time, Dong Shuzhen also realized that something was wrong. She and Kou Wanwan looked at each other, then shouted "Ah" and rushed towards Zhu Xiuyuan together, and the three of them immediately fell into a fight.

The sounds of laughter and fighting suddenly echoed in the barren mountains and ridges.

Zhu Xiuyuan was immediately surrounded by two female goblins, but he saw the graceful limbs, the sideburns in a bun, the long skirt fluttering, the jade body rolling, and the misty gauze. The two women worked together, it was as graceful as a dance, it was mesmerizing.

In addition, I heard bursts of laughter, as sweet as silver bells, as crisp as clear springs, and full of the breath of youth. After listening to it, everyone's muscles and bones were numb, their minds were confused, and they were completely trapped in this gentle land.

Zhu Xiuyuan howled, screamed and laughed. It was hard to tell whether he was feeling uncomfortable or excited...

After playing around for a while, the three of them stopped.

Because of the commotion, the three of them lay on the ground, with Zhu Xiuyuan in the middle and the two women on each side.

Their faces were red, their chests were heaving, and they all lay on their backs looking at the sky, panting slightly.

The fun they had just now was considered crazy.

Zhu Xiuyuan lay there for a while, and suddenly saw that the sun was setting in the west, and it was almost dark.

So he said: "It's getting late, let's go hunt some prey and prepare dinner first."

With that said, he got up first.

The two women followed closely behind.

"This basin of salt water should be almost ready when we come back from hunting. Then we will move on to the last step!" Zhu Xiuyuan came closer to the copper basin, took a closer look and said.

The three of them packed up, then set off together, went deep into the forest, and started hunting.

Once she entered the hunting phase, Dong Shuzhen started to act arrogant and kept irritating Kou Wanwan with words. Especially when she gained something, she became even more proud.

(End of this chapter)