"If the temperature of the fire is too low, the pottery may break, but since the blast furnace has black charcoal, we should be able to make good pottery."

"Okay, the whole morning has almost passed, and now comes the main event, the treatment of iron bacteria."

Bi Fang rubbed his dirt-covered palms, moved a second stone slab, put some charcoal on it, and ground it into black powder with stones.

At this moment, a barrage caught the attention of the audience in the live broadcast room.

[Someone is making iron next door...]

[Holy shit, are you taking advantage of the heat?]

["Finding" iron ore directly in the mountains, and then bringing it to the factory to smelt it yourself... This is nothing, it doesn't show any ability]

【Ah, that's it.】

[I was born in a mine, but I only have iron bacteria here]

[If Fang Shen is awesome, that’s it! 】

With the charcoal ash in hand, Bi Fang went to the bottom of the blast furnace and opened the lid. There were white burning ashes inside. He took some out and put them into a bamboo can.

The last step is to use iron bacteria.

Although it hasn't rained in the past few days, the iron bacteria in the pit are still moist. What Bi Fang wants is not these, but the ones that have been dried in the bamboo basket.

After a long period of exposure to wind and sun, the originally moist iron bacteria have turned into yellow rusty soil.

Just like this, three materials, one yellow, one gray, and one black, are the key to preparing iron.

"Plant ash contains sulfur and can help liquefy iron metal, while charcoal is used to oxidize and reduce iron oxide."

[Wait, iron oxide? Didn’t I say that iron hydroxide is used to make iron? 】

[I didn’t learn the previous chemistry well. What do you think Fang Shen was doing when the iron bacteria were exposed to the wind and sun? 】

[When iron hydroxide is exposed to the air, its color will change, 2Fe(OH)3==Fe2O3+3H2O, and finally it will turn into iron oxide, and the water will evaporate, junior high school chemistry...]

[I forgot about it a long time ago. Do you have any comments? 】

Bi Fang was very happy when he saw the barrage. There are still people who understand a little bit: "Yes, it is this equation, so what we have now is iron oxide, not iron hydroxide anymore."
Chapter completed!