Siheyuan: Start at level 60, beat up all the animals

Thinking of this, Qin Jingru's shoulders slumped, her face filled with loss and frustration.

Xu Damao saw this and knew the time was ripe, so he struck while the iron was hot and proposed:

"How about we go out for a walk today? I think you're bored staying at home alone, why don't you go out and relax and do some shopping?"

Qin Jingru hesitated for a moment, but finally nodded.

The two of them then went out to the street together again, as if nothing that happened yesterday had happened.

……

At this time, Li Yang was in Secretary Zhang's office, talking incessantly about his grand plan.

"Secretary, doesn't our factory have a steelmaking furnace? I want to modify it. Do you think it's okay?"

Li Yang's tone was full of confidence and fighting spirit.

Although rolling mills mainly produce steel, in this era, many steel companies are comprehensive factories and are therefore also equipped with some steelmaking equipment.

It’s just that the quantity and professionalism are not as good as those of a specialized steel mill.

Secretary Zhang was shocked when he heard Li Yang's proposal.

You know, steelmaking and steel rolling are two different things!

Although there is only a one-word difference, the difference is huge!

Steelmaking, to put it simply, is the process of turning "iron" into "steel".

The pig iron coming out of the blast furnace has a high carbon content and many impurities and cannot be used directly.

It must go through a series of refining processes such as decarburization, desulfurization, and dephosphorization before it can become high-quality molten steel.

Steel rolling is the process of rolling the refined steel into various profiles, plates and bars through pressure processing.

Although the two are upstream and downstream of steel production, the equipment, processes, and principles required are very different.

Secretary Zhang couldn't help but frowned and said earnestly:

"Xiao Li, steelmaking is no joke. Although we have a spare steelmaking furnace, the equipment has been in disrepair for a long time and we still need it at a critical moment!

If you want to reform, you must think it through! If you fail, we can't afford it!"

Facing Secretary Zhang's doubts, Li Yang seemed confident.

"Secretary, rest assured, I have made sufficient preparations and calculations to ensure that there will be no problems! I believe that with the new steelmaking process, the quality of our steel will definitely be able to take a big step forward!"

Li Yang spoke passionately, his face filled with an extremely determined expression.

Seeing how confident he was, Secretary Zhang felt a little shaken.

But on second thought, isn't every innovation of Li Yang always successful?

Besides, his superiors have repeatedly reminded him to fully support Li Yang's work and let him go ahead and do it.

Thinking of this, Secretary Zhang gritted his teeth and made up his mind:

"Okay! Then I approve this matter! Xiao Li, you will be fully responsible for the transformation. If you need anything, just let me know!"

Li Yang was overjoyed to get the approval and thanked repeatedly.

Secretary Zhang couldn't wait to return to his office and prepare to implement the transformation plan.

That steelmaking equipment was an old-fashioned open-hearth furnace left behind by the Russians.

The so-called open furnace, as the name suggests, is a rectangular furnace body with multiple gas or heavy oil burners installed on both sides.

High-temperature flames are sprayed in from both ends to heat the pig iron and scrap steel loaded into the furnace, melting them into molten steel.

At the same time, slag-forming agents such as lime and fluorite are continuously added into the furnace to combine with impurities in the molten steel to form steel slag.

As the temperature rises, the slag will float to the surface of the molten steel, isolating it from the air and preventing the molten steel from oxidation.

In this way, after several hours of refining, the open-hearth furnace finally spits out a furnace of clean molten steel for use in steel rolling.

But the open hearth furnace has a fatal flaw, that is, the thermal efficiency is too low and the energy consumption is too high.

The furnace is huge, with severe heat dissipation, and the flame can only indirectly heat the molten steel, resulting in a long steelmaking cycle and high costs.

What’s worse is that it is difficult to control the composition and temperature of molten steel in an open-hearth furnace, so it can only passively accept it, and the quality of the steel is uneven.

What Li Yang planned to transform was a brand new steelmaking method - top and bottom blown converter!

This converter looks like a large pear-shaped iron can in appearance and can be flipped 360 degrees around its central axis.

The furnace top is equipped with multiple oxygen spray guns, and the furnace bottom is equipped with multiple oxygen-enriched gas blowing nozzles.

When molten iron is poured into the furnace, high-purity oxygen is sprayed into the molten iron from both ends, instantly triggering a violent oxidation reaction.

Impurities such as carbon, silicon, manganese, etc. in the molten iron are oxidized in an instant, emitting huge amounts of heat, causing the temperature of the molten steel to rise sharply.

At the same time, the stirring of oxygen also allows the slag and molten steel to be fully mixed, accelerating the desulfurization and dephosphorization process.

The entire smelting process only takes 20 to 30 minutes to produce a furnace of high-quality molten steel. The efficiency is amazing!

Moreover, the design of combining top blowing and bottom blowing makes it easy to control the composition of molten steel and ensure stable quality.

The insertion depth and flow rate of the oxygen lance can be adjusted at any time, and blowing argon at the bottom of the furnace can make the molten steel more uniform and consistent in composition.

All these factors make Li Yang full of confidence and expectation for this transformation!

Immediately, he spread out the blueprint and began the intensive design work.

Li Yang was seen writing with a brush and splashing ink in front of the drawing board, quickly outlining the contours of each component.

Furnace body, oxygen gun, blowing nozzle, transmission device...

He meticulously marked the size, material, and craftsmanship requirements for each detail.

The densely packed words and symbols, like a heavenly book, are dazzling.

But in Li Yang's eyes, everything was extremely clear and orderly.

It seems that those cold lines have come alive under his pen, full of vitality and spirituality.

Soon, a complete set of renovation drawings appeared on the desk.

……

Li Yang looked at the drawings with great concentration.

His piercing eyes seemed to see through the drawings.

In my mind, a brand new top and bottom blown converter has risen from the ground and stands tall.

This transformation first requires transforming the open-hearth furnace body into a tiltable iron shell.

The furnace shell is welded with high-quality steel plates and lined with high-grade refractory materials to withstand the violent smelting reaction.

Six tiltable top-blowing oxygen guns are installed above the furnace body to blow in high-purity oxygen.

There are 8 bottom blowing feather ports at the bottom of the furnace, which are connected to the blast pipeline to blow in oxygen-rich coal gas.

Such top blowing and bottom blowing are like two sharp swords, striking directly into the heart of the molten steel.

Under the bombardment of oxygen, the molten steel boils instantly, like the roaring of thousands of troops.

The slag rolled, sparks flew, and heat waves rolled, it was like hell on earth.

And in the center of this hellfire, molten steel is constantly being purified and reshaped.

Impurities are stripped away, the temperature is precisely controlled, and it eventually turns into a pool of clear, crystal-clear molten steel.

In addition to the furnace modification, Li Yang also designed a number of exquisite supporting facilities:

For example, the furnace mouth is equipped with automatic temperature measurement and sampling devices to monitor the status inside the furnace at any time.

There is an automatic feeding hopper behind the furnace, which can accurately control the ratio of raw materials such as molten iron, scrap steel, and quicklime.

The flanking wing is equipped with a smoke and dust purification device, which is cleverly combined with the blast duct to remove dust and recover heat...

All these things reflect Li Yang's ingenuity and craftsmanship.

In the corner of the drawing, there were four big characters written: Top and bottom double-blown converter!

It not only highlights the uniqueness of the furnace shape, but also demonstrates the innovation of technology.

I believe that with such a brand new converter, the steelmaking level of Geng's workshop will surely reach a new level!

Li Yang worked hard and focused all day long.

When the last stroke was made, the sun was setting.

The setting sun shone through the window lattice, stretching Li Yang's silhouette very long.

The golden light sprinkled on the drawing, as if giving the design a layer of holy color.

Li Yang let out a long sigh, wiped the sweat from his forehead, and a relieved smile appeared on his face.

Yes, he is about to start another magnificent reform!

A transformation of the steel kingdom is about to take place in this factory area with numerous blast furnaces and chimneys!

Li Yang took a big step and walked out of the office

At this moment, he was not tired at all, but full of energy and high morale.

Because he knew that what awaited him ahead would be difficult explorations and impossible breakthroughs.

But he has confidence, determination, and the courage and power to change the world!

In this steel country, in this bustling workshop, Li Yang walks with his head held high, his back as straight as a pine tree.

The steel torrent of the new era is already rushing

And he is the most dazzling pine tree in this torrent, standing out from the crowd at first glance!

The green pine is not afraid of wind and rain, and Li Yang will also move forward courageously until he reaches the other side of his ideal!

……