Release that Witch

......

Roland made himself a cup of tea and then looked at the nightingale. "Are you either?"

"Yes, thank you."

She leaned back on the recliner, holding the fish in one hand, and holding a new Mei-written script in one hand, and looked at it with gusto.

Since Anna and her talked, the nightingale disappeared for two days, and when she appeared again in front of Roland, she seemed to have unloaded the heavy burden and changed back to her former free-spirited appearance. There is always a smile that can't be concealed on his face, and occasionally he will sneak a few eyes on him, his eyes full of energy.

Just like she is now.

Unscrupulously, the feet were placed on the coffee table, and the robes were smashed to the side, revealing the slender legs wrapped in black stockings, and the body shape was only temporarily hidden when someone came in. This tempting posture made Roland's eyes often involuntarily sideways, causing half a morning to pass, and even a pair of drawings have not been drawn.

I knew that I wouldn’t call Soroya to draw this kind of warm socks that are close to nylon.

He put another cup of tea that exudes a pleasant fragrance to the nightingale, "The tea you want."

She put down the script, took it with both hands, and sniffed it. "Ah... good fragrance, can you add me a piece of sugar?"

In the afterlife, the nightingale is undoubtedly a middle-sex person of the salty and sweet parties, and how can they not eat fat. During the time when Roland was awake, she lost weight very seriously, and she lost weight in her body, but when she woke up, she quickly returned to normal level, and the weight seemed to have an upper limit. After the standard, it will never grow again.

In the past, Roland would have to eat too much and easily get fat. Now I realize that the other party does not need to worry about this.

Putting a piece of sugar into her cup, he went back to the table and drew a few more. Finally, he couldn’t help but curiosity. He said, "Night..."

"Ok?"

"Anna, she... what did you say to you?"

"This is..." She flashed and appeared on the desk. "It's a secret."

"Can't I even tell?"

"It was Anna’s request," the nightingale hesitated, and finally shook his head. "If it’s about me, you want to know what I will say, but this... she keeps me secret."

"Oh, okay," Roland drank the tea and didn't continue to ask. Although he can go directly to Anna, but people with normal emotional intelligence will not repeatedly mention this matter at this time.

At least he can see that Anna is not angry at this.

Just when he mentioned the quill again, the nightingale suddenly said, "Thank you."

"What?" Roland groaned and looked up, just in time with her eyes.

Qiuyang dyed her long blond hair and left a bright spot on her face. The moving face was beautiful in the warm sunshine, and the time seemed to stop.

"Thank you for telling her my wish."

......

By the afternoon, the Ministry of Construction had good news. According to Roland's new drawings of steelmaking facilities, the first converter steel plant was planted at the foot of the North Slope.

Of course, it is a factory, it looks more like a simple iron shed. There is a unique new equipment in the same place. It is different from all the previous kiln. This smelting equipment is all over the body. The steel is cast, the angular hob and the huge converter have been coated with a heat-resistant coating, and the matt surface of the gray-black color gives a heavy feeling in the sun.

When Roland came to the kiln area with the town hall officials, the old workers who had been recruited by the new stoves were surrounded by water. Obviously everyone was curious about it.

"Your majesty, can this stove really steel? It doesn't even have a place to burn." Although Luo Siya of the Ministry of Construction had questioned this question before, he still completed the converter construction in accordance with the requirements of the map. Its components are all made by Anna, and the hummingbird's weight-reduction assembly shortens the construction period to one week.

“It’s not just the flames that generate heat in nature,” Roland laughs. “Let the workers prepare for the trial.”

The three main technologies of steelmaking are open hearth, converter and electric furnace. The electric furnace that does not have the conditions is first excluded. The remaining two he chose the latter after considering it for a long time.

Although the flat furnace is the simplest in structure and the operation is closer to the traditional furnace, the shortcoming is also very obvious. First of all, it requires a large amount of fuel, which is very unfavorable for the resources available without winter city. After all, the coal mine is far from the source of the Chishui River, and the coking plant has just started. It is already very difficult to meet the needs of the blast furnace iron. In addition, if it is an open hearth steelmaking, it will lead to fuel shortage.

And this is the biggest advantage of the converter, almost no fuel. It oxidizes itself by the oxidation of manganese, silicon, carbon and other impurities in the pig iron, so that the temperature of the molten iron is always maintained at a high point, so that the smelting reaction continues.

The second disadvantage of the open hearth is that it covers a large area and has a long smelting time. In order to strengthen the use of fuel, the open hearth needs to build a heat storage tank, preheating the air in advance, and it takes a long time to refine a furnace of steel. When changing to a converter, the size of the furnace is the size of the equipment. The track and the steel water transportation system can be shared. The smelting takes only tens of minutes, and even after the technology is mature, it can be shortened within a quarter of an hour. The efficiency varies greatly.

It is in view of these two points that Roland chose to use the converter as the main equipment for steelmaking in the future without winter city.

With the help of a steam engine, the workers quickly dumped a large pile of pig iron into a pear-shaped hearth.

"Anna, let's make a fire."

Anna nodded and climbed up the top of the converter along the stairs, summoning a black fire melting iron ingot, and in a moment, the red hot iron in the furnace brightened her face.

When it is officially produced, the molten iron from the steel mill will be supplied by the blast furnace, which is why he built the steel plant in the furnace area.

“Follow the steps I said,” Roland told the head of the steelmaking team, “Insert the blowpipe into the mouth of the furnace.”

Although these selected old workers were the first formal contact with converter steelmaking, similar subsystems have been operated before, and there is no essential difference between manipulating the pipeline and controlling the trailer. The steam engine rumbling, and a steel pipe slowly fell from the top of the furnace into the raft.

The other end of the steel pipe is connected to the coating hose and leads to the pumping device driven by the steam engine. As the oxygen-enriched air is sucked into the converter, the furnace suddenly bursts into the flames, and the orange-red sparks splash out from the furnace. Fireworks. The dazzling light presents a strange incandescent, almost impossible to look directly at.

This spectacular scene surprised the city hall officials.

Roland greeted the burning waves of the face, and felt very satisfied in his heart.

These sparks are the symbol of humanity's march towards a new era.