Chapter 658: Dreams and Steel
Translator: TransN Editor: TransN
As the liquid iron rolled over and over in the converter, the silicon and manganese in it were oxidized first after which it was the turn of the carbon in the pig iron.
At a temperature of nearly 1,500 degrees, the carbon reacted with the oxygen in the air, producing carbon monoxide and a lot of heat which made the liquid boil in the furnace. The flames gushing out of the furnace mouth almost enveloped the blowing pipe and the grate. That was why Roland made them coated with heat resistance coating.
A large amount of hot carbon monoxide were forced outward. It mixed with the air outside and burnt violently, looking as if the furnace were set afire. The noises caused by gas expansion even downed the booming sounds of the steam engine. As this scene easily evoked an image of an erupting volcano, all the people moved backward simultaneously in fright, except Roland who still stood in the place, with both of his hands behind his back. He faced the strong hot winds, totally besotted with the awe-inspiring roars of the surging steel liquid.
He thought it was a pity that he could not use pure oxygen in this process at present due to technological limitations. Otherwise, the flames would shine even more brightly.
When oxides of phosphorus and sulfur, which were the last elements that were oxidized, reacted with limestone and became furnace slags, the flames began to dim and the liquid iron became molten steel. As the furnace slags were lighter, they were floating on it. The workers could pour the liquid steel out through the steel-tapping hole by tilting the furnace as easily as pouring a cup of tea.
To prevent the slags from entering into the steel ladle, a modern steel mill would use a slag-stopping ball, a slag-stopping spear or infrared detection, which was beyond Neverwinter's technical capacity. Given that, Roland came up with a simple solution which was not pouring out all the liquid. He instructed the workers to erect the furnace when there were still some liquid steel in it, and then he asked them to dump all the left liquid steel together with the furnace slags. As he was not pursuing productivity efficiency, he did not care about such a little waste. Besides, when he collected enough wasted liquid steel, he could put them back into the furnace to make steel again.
To ensure the quality of the steel, the last step was to eliminate excess oxygen in the liquid steel.
The alumina poured in Neverwinter from Longsong Stronghold could make excellent deoxidizers. A bucket of pure aluminum extracted by Lucia was added to the liquid steel, and soon aluminum oxide furnace slags and excess liquid aluminum started to float to the surface. At this moment, the whole steelmaking process was acplished.
Seeing the bright molten steel being poured into the mold and turning into steel ingots, all the officials of City Hall were too stunned to utter a word.
In this era, people usually relied on blacksmiths to hit on the hot iron repeatedly for a long time to produce steel, and a whole set of steel armors would be treasured as a family heirloom. No one had seen that steel could be made this way. "Star of Steel" had been able to produce lots of steel, but it was run by magic powers. They all knew that without Anna and Lucia, it could hardly produce anything.
However, this time was different, as converter steelmaking required no magic power but mon workers. They realized something after witnessing this whole manual operation.
They were clear that they could not create another "Star of Steel
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