Building infrastructure in the wizard world

Chapter 173 Iron Ore

The people from Kong Family Village were invited into the classroom of Mu Guan and others.

After a few polite words.The Kong family began to look around.I want to see the truth from the subtleties as quickly as possible.

"What is this?" Kong Wenxue asked as soon as he entered the classroom, pointing to the projector.

"Projector. It can be simply understood as a canvas on which images can be projected." Wooden Crown explained in the simplest tone.

After listening to Mu Guan's explanation, Kong Wenxue and others stood in front of the projector for a long time, observing such things for a long time.

"What is this room for?" Kong Wenhua asked.

"Let's go to class." Yan Fan asked casually.The few of them have gradually become calm and calm from the excitement at the beginning.

Attend class!

Kong Wenhua's eyes lit up, this room was actually used for class?

"It's the place to teach you knowledge?" Kong Wenhua confirmed again.

"Yes." Shui Leshan replied.

"Is this one room used to teach you knowledge? Or is the whole building used to teach you knowledge?" Kong Wenhua asked in great detail, wanting to see what kind of person Shi Hao really is from these small things.

"The whole yard is used for classrooms." Tu Yuan replied honestly: "From the teaching building, to the west building, the north and south buildings, and the east building. They are all used as classrooms."

Hearing this, everyone in the Kong family village, including Kong Wenxue and Kong Wenhua, were surprised and delighted.

"I didn't expect that the owner here pays so much attention to knowledge and education."

"He didn't come from our Kong family village, did he? Or is he a descendant of a married daughter outside our Kong family village?"

"It must be influenced by us, otherwise we wouldn't pay so much attention to education."

"Such a big place, such a beautiful building, all used to teach knowledge? This is the behavior of our Kong family!"

People in the Kong Family Village talked a lot, and hearing Shi Hao's such a generous operation, they wished to regard Shi Hao as a member of the Kong Family Village.

"The owner here is very likely to be a fellow traveler with us." Kong Wenxue also made the same judgment.

Although Kong Wenhua still maintains his own identity, he also made a conclusion: "Maybe the paths are different, but the ultimate goal is still the same."

Obviously, Shi Hao used the most beautiful and magnificent place in the entire camp as his academy, which was greatly recognized by the people of the Kong Family Village.

"Then who will teach you?" Kong Wenxue asked curiously.Could it be that the principal came to teach in person?
"It." Tu Yuan said naively, pointing at the projector.

"It? What can it teach you? Then what did you learn?" Kong Wenxue asked in an incredible tone.

"Learn whatever you want to learn! Of course, you should learn something that is useful to you." Tumoto replied sternly.

Hearing Tu Yuan's answer, everyone in Kong's Village showed embarrassment, embarrassment and speechless expressions.

They hesitated to speak, and wanted to persuade Tu Yuan and others to follow the right path, but they were concerned about their status as guests, so they hesitated, and finally looked at Kong Wenhua.

"Nonsense!" Kong Wenhua roared loudly.

All eyes were on Kong Wenhua.

Sure enough, it was Kong Wenhua who had to do this kind of offending.

"You guys are just fooling around! There is such a good place, with such good conditions. How can you study just by looking at a piece of cloth? What do you want to learn? What can it teach you?" Kong Wenhua was so angry that his beard was trembling. If Shi Hao stood in front of him, he would most likely give Shi Hao two slaps.

Desperate things.

What a mistake!
Kong Wenhua couldn't bear it anymore.

"Where is your director? Let him come to see me. See what he's doing? What is he doing? Waste of such a good place, waste of your time. It's... It's like God and man." Kong Wenhua roared.

"Shut up!" Mu Guan, Yan Fan, Shui Le Shan and Tu Yuan shouted at Kong Wenhua in unison.

It's OK to insult them.

But insulting the academy and the head of the school will not work!

Several people glared at Kong Wenhua, and the atmosphere at the scene was tense for a moment.

Just when everyone was about to stop talking for half a sentence.

The projector in the classroom began to play the picture.

A picture of iron ore appeared in the projector.

The narrator on the side began to dub: "What is iron ore? Any ore that contains economically usable iron is called iron ore.

There are many types of iron ore, mainly magnetite, hematite and siderite are used for ironmaking.

After the iron ore sample is dissolved by hydrochloric acid, the iron in it is transformed into Fe3+.Under strongly acidic conditions, Fe3+ can be reduced to Fe2+ by SnCl2.

After Sn2+ has reduced Fe3+, methyl orange can also be reduced by Sn2+ to hydrogenated methyl orange and fade, so methyl orange can indicate the end point of Fe3+ reduction.

Sn2+ can also continue to reduce hydrogenated methyl orange to N, N-dimethyl-p-phenylenediamine and sodium p-aminobenzenesulfonate.

All in all, iron ore is a very important resource. "

Everyone fell silent as something played on the projector.

Especially the people in Kongjia Village, each of them opened their mouths wide, not knowing how to express their shock.

"This? What does this mean?" Kong Wenxue asked puzzled.

"Why did it suddenly have a picture? Why did you put this up all of a sudden?" Kong Wenhua followed suit and asked.

I saw that the two of them had just finished speaking when someone entered text on the projector.

"A detailed classification of iron ore?"

As the questions are entered, answers quickly pop up.

“Iron ore is mainly divided into several categories:

One, magnetite.It is a kind of iron oxide ore, the main component is Fe3O4, which is a compound of Fe2O3 and FeO.

It is black-gray, with a specific gravity of about 5.15, an iron content of 72.4%, an oxygen content of 27.6%, and is magnetic.

Magnetic separation can be used in mineral processing, which is very convenient to process.However, due to its fine structure, its reducibility is poor.

After long-term weathering, it becomes hematite.

The second is hematite.

It is also an iron oxide ore, the main component of which is Fe2O3.

It is dark red, with a specific gravity of about 5.26, an iron content of 70%, and an oxygen content of 30%.

Is the most important iron ore.

According to its own structure, it can be divided into many categories, such as red hematite, specular iron ore, mica iron ore, clay hematite and so on.

Third, limonite.

This is an ore containing iron hydroxide.

It is the general name of two different structure ores, goethite HFeO2 and lepidosite FeO, and some people write the chemical formula of its main component as mFe2O3.

It is khaki or brown, contains about 62% iron, 27% oxygen, and 11% water, with a specific gravity of about 3.6-4.0, and is mostly attached to other iron ores.

Fourth, siderite.

It is an ore containing ferrous carbonate, the main component is FeCO3, it is blue-gray, and its specific gravity is about 3.8.

This ore probably contains considerable amounts of calcium and magnesium salts.

Since the carbonate root will absorb a lot of heat and release carbon dioxide at a high temperature of about 800-900°C, we usually roast this type of ore first and then add it to the blast furnace. "

During the video, no one spoke.

Everyone in Kongjia Village stared at the screen intently.

Their hearts were violently shaken, unbelievable, unbelievable, curious, and crazy.

Various emotions are staged in their hearts in turn.

"It's... a monster?"

(End of this chapter)