Therefore, the second stage of pencil development is also called the birth stage of wooden penholders.

Whether it is the basic steps used by Xu Wen to make a wooden pole or the basic steps originally used to make a pen holder, it can be said that there has been no change since the beginning and has been passed down.

In other words, the basic process of making pen holders used so far all over the world is exactly the same!

In the third stage, at this stage, two different forms of pencils appeared, one was a capped pencil, and the other was in a more primitive state.

In fact, at this stage, the development of pencils did not usher in any great creations, it was just adjustments based on people's experience of using them.

The development at this stage is mainly based on targeted research based on a series of problems exposed by traditional pencils and the troubles it brings to people, such as: unhygienic use, the pen tip is easy to break, and it is not easy to carry.

Thus the capped pencil was born as a solution to this series of problems.

Looking at these three historical stages of pencil development, it can be clearly discovered that the same steps for pencil production have been passed down since ancient times.

The only thing that changes is the feeling of using the pencil and the appearance of the pencil.

"Boss, how should we process these graphite ores?"

"Is it still the same as the iron ore from before? Just throw it directly into the furnace?"

Seeing Xu Wen staring at these graphite ores in a daze, the little monkeys asked curiously.

Having the experience of processing two different metal ores seems to have limited their imagination. It seems that all the little monkeys unanimously believe that there is only one way to process the ores, and that is to throw them all away.

Into the furnace!

"Graphite ore is somewhat special, and the processing method used cannot be so simple and crude."

"To be honest, there are two methods now. One is indeed closely related to our stove, and the other is also called flotation."

To be honest, for the purification of graphite, the system gave four or five methods at once.

In addition to the flotation method just mentioned, it also includes high-temperature purification method, chlorination roasting method, alkaline-acid method, etc.

Three of the methods are closely related to chemistry and naturally cannot be used in this situation.

However, the remaining two methods directly become the dilemma of choice.

For the flotation method, as its name suggests, it is to make the purest graphite float in the liquid.

And these liquids are not ordinary water resources, but require kerosene.

You should know that graphite has very good natural floatability and does not dissolve in water at all.

In this way, the graphite scales can be protected from any damage.

As for the high-temperature purification method, it is actually similar to the previous method of smelting unpalatable ore, which is to completely throw the graphite into the furnace and purify it through the high temperature of the furnace fire.

However, since graphite is one of the substances with the highest melting and boiling points in nature, although it will not turn into liquid like iron ore, it also has higher requirements for the temperature of the furnace fire.

In addition, there are many factors that affect the purification of graphite, such as its own impurity content, etc.

However, through high-temperature purification method, what can be guaranteed is that through this method, graphite can be purified to more than 99.99%!

"Ah, I didn't expect that it would be so difficult to purify graphite ore!"

After listening to Xu Wen's explanation, the monkeys immediately fell into a dilemma.

A method that can maximize the purity of graphite, but it is a huge test for their furnace.

Another method, in terms of energy consumption, although it is not that huge and the overall process is relatively simple, the monkey group does lack the most important material in the entire process, which is kerosene!

“It’s better to choose the high-temperature purification method!”

After repeated thinking, Xu Wen chose the high-temperature purification method.

If there was such a thing as kerosene in the current camp, Xu Wen would definitely choose a method that is simpler and has a relatively higher success rate without thinking.

"In this case, we will need a lot of charcoal. This stove will be fully powered now!"

"Let's do this. I'll give you half an hour to get ready!"

"In half an hour, the purification of these graphite ores will begin!"

Since the high-temperature purification method has very strict temperature requirements, we can only turn on the entire furnace and continuously smelt these graphite ores.

During this half hour, the entire monkey group became busy as if facing a formidable enemy.

A steady stream of trees were transported to the camp. Needless to say, Xu Wenduo knew that as long as there were enough trees, it would be very difficult to raise the temperature.

"Why do the monkeys suddenly need so many trees?"

"No, if this continues, won't the entire forest be emptied by them?"

"But, can they really use these many trees?"

"The most important thing is, what is Xiao Jin doing hiding in the corner now? Why does it feel like I'm drawing a circle and cursing you?"

Looking at those little monkeys going back and forth, the audience in the live broadcast room once again felt that their thoughts were still not on the same channel as these little monkeys.

Xu Wen, on the other hand, was sitting very quietly in the corner of the camp, holding a small piece of graphite in his left hand, and whittling it with his iron sword in his right hand.

"Professor Lu Yu, Xiao Jin seems to be rubbing all the graphite into powder."

"But in this case, wouldn't the conductivity of graphite have no effect at all?"

Seeing Xu Wen's somewhat strange behavior, Julie asked incomprehensibly.

In his concept, if something wants to maintain some of its own special attributes, it must first maintain its own integrity.

However, after graphite is completely transformed into a powdered state, in Julie's mind, the characteristics it possesses should be completely present.
Chapter completed!