Of course, Zhang Feng would not participate in the experiment.
After all, while guiding these people in the experiment, he also needed to study what would happen after the extraction. Although the phosphorus element was easy to extract, the phosphorus fertilizer was somewhat difficult.
In fact, there were two ways to produce phosphorus fertilizer.
One was to dissolve it with acid, which was what Zhang Feng was doing now. The other was to dissolve it with heat, which was to use silica, dolomite, and phosphorite to quench it at high temperatures. It was like calcining it in a kiln. Then, the phosphorus powder in the phosphorite would be extracted. After calcining, it would be ground into phosphorus fertilizer.
Of course, these were also two kinds of fertilizer.
At this time, what Zhang Feng needed to calculate was whether the acid dissolution method was faster or the heat melting method.
After all, if it was dissolved with heat, the toxins would be too serious. Even if these workers were wearing masks, the probability of getting pneumoconiosis and acute respiratory diseases would be greatly increased.
This was something Zhang Feng did not want to get involved in easily.
He also did not want to do it.
At the very least, before the steam engine replaced manual labor, he did not dare to do it.
At this time, under Zhang Feng's guidance, Li Chengqian and the others had a clear division of labor. They could even complete the experiment alone. Coupled with the protection of the masks, at least Li Chengqian and the others would not be poisoned by phosphorus anymore.
However, when the bell rang, Zhang Feng had already stopped everyone's experiment.
Li Chengqian and the others were also attracted by this magical experiment. Even when Zhang Feng called for them to stop, they still anxiously waited for a while before stopping with waning interest.
When everyone weighed it, good lord, it almost gave Zhang Feng a shock.
From the beginning of the experiment until now, it was estimated that only four hours had passed. However, in these four hours, Li Chengqian and the others had already produced more than fifty catties of phosphorus fertilizer.
This made Zhang Feng feel a little incredulous.
"Tsk tsk, you guys are good. You can produce so much in four hours?"
"Hehe, Feng Zi, if you hadn't stopped us, we would have probably taken out a few more kilograms!"
Cheng Chumo said smugly. He was about to take off his mask when Zhang Feng glared at him.
"It's not bad that you can get 50 catties today. But tomorrow, I need each of you to get 50 catties for me. I believe that won't be difficult, right?"
"No problem. How about we continue now? It's still early! "
Cheng Chumo rubbed his hands in excitement.
A stone.
Through their hands, with the help of a lamp, in less than the time it took to eat a meal, it could be turned into a pile of something finer and whiter than salt. What was this?
This was an achievement!
When they thought about how these things would cause the food supply to skyrocket in the future, and how all the people would remember their names, they became even more restless.
However, Zhang Feng hurriedly stopped them and said, "Now you know the benefits of this thing? Why didn't you have this kind of passion before? If you had this kind of passion before, you would have done a more advanced experiment than this! "
！！！
When Li Chengqian and the others heard this, they couldn't help but perk up their ears.
"What experiment?"
Zhang Feng rolled his eyes and said, "Now, let's talk about it after you guys understand all the common sense! For the time being, keep these things a secret. "
Hearing this, Li Chengqian and the others couldn't sit still anymore. ,
Just as they were about to perform the massage plan, Zhang Feng hurriedly stopped them and said, "Okay, put away your tricks. If you put in some effort, you can do this?"
"No, Feng Zi, didn't we just get a feel for it?"
"Yeah, isn't this the beauty of the Body Hardening Taste? Don't you trust us? It's still early now, let's do a little more. I estimate that we can make 25 catties of phosphorous powder today! "
Cheng Chumo and the others surrounded Zhang Feng and prepared to continue the experiment.
Zhang Feng's head was still shaking like a rattle drum.
"No, no matter what you say, it won't work. The danger of this experiment can only allow you to end today's experiment. Every day, you must work for four hours and rest for four hours. Otherwise, you are people who have been poisoned once. If you are poisoned again, even the gods can't save you!"
"I'm doing this for your own good!"
"…"
This time, Li Chengqian and the others didn't insist.
They hadn't lived long enough. Besides, they didn't dare to touch the taste of vinegar for the rest of their lives.
It was too damn sour.
Li Chengqian and the others walked out of Chang 'an University resentfully.
However, at this moment, when Zhang Feng stepped into the sedan, he said, "Remember, a jar of vinegar every day, no less!"
"…"
They still had to drink it!
They couldn't help but break down.
But there was nothing they could do.
They didn't want to experience that kind of discomfort again.
After parting ways, Li Chengqian hugged a jar of vinegar and sat in the sedan, drinking as he walked. He drank so much that he almost vomited his intestines out.
But what could he do?
He had to take care of his life!
By the time Li Chengqian returned to the Palace of Heavenly Purity, Imperial Physician Zhou of the Imperial Physician Court was already waiting for him, happily chatting with Hou Junji. ,
When they saw Li Chengqian walk in with that white thing hanging from his mouth, the two of them couldn't help but be alarmed.
"Your Highness Crown Prince, what is that on your mouth?"
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