"Uh......" Sylvie looked at the shell for a long time, and then looked at Roland's sketch for a long time before pointing to the detonator part, "It seems that this copper pipe is not aimed at the nail at the top." Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ”

"Where's the spring?" Anna asked, "are they still stuck on either side of the plate?"

"One of them is crooked. ”

"Left or right?"

Anna asked for details, then jotted them down in a notebook.

Once you've collected the reasons for the failure, it's time for the next round of shots - four shots to put all of Asha's replay abilities to use, so the efficiency of the improvement has never been higher.

Unfortunately, the next two rounds of test firing also failed, and Roland had to announce that he would continue the test tomorrow.

For Asha and Sylvie, the day's work is all over, and they can go back to the castle to enjoy a delicious afternoon tea or go to the convenience market to see if there are any new products. But for Anna and Agatha, grenade testing is just a small part of their busy schedule. Anna, in particular, had to complete the development and assembly of the steam turbine in addition to improving the fuse according to the cause of the failure.

Roland had planned to follow her to the backyard of the North Slope to see the progress of the turbine model, but Sean, the guard, brought news of the city hall.

"Your Majesty, Deputy Minister of Construction Losiya would like you to visit the furnace area, and he said that the first retort has been set up. ”

......

As a must-have for the coking plant, the planned 10 retort columns will be located next to the kiln clusters at the foot of the North Slope mining area.

Due to the extensive felling of bricks and iron, the furnace complex has gone from a small vacant plot of less than 1,000 square meters to a vast empty area that now stretches along the mountain. If it weren't for Roland's strict ban on workers using the woods near the edge of the town, it is estimated that there would not be a single tree left in the northern part of the border area.

Although coal is now available, charcoal is still the main source of iron smelting, and as the tree harvesting sites get farther and farther away from the kilns, the workers set their sights on the northern slopes of the mountains, where hundreds of logs are cut down every day and then thrown from the tops, and from a distance, a small "bald spot" has appeared on the green peaks.

Naturally, Roland would not ask them to protect the environment in this kind of thing, as long as the sand and dust raised would not affect the town, he would not care if the north slope of the mountain was cut down. After all, this small protruding mountain range is just a small corner of the mountain, with leaves to maintain basic vegetation, and there is little need to worry about soil erosion.

The reclaimed flat land at the foot of the mountain has naturally become the most suitable location for the coking plant.

Roland led the nightingale and his guards through the noisy kiln area to the first distillation tower. Losia immediately stepped forward and bowed to him, "Your Majesty, I have built this double-walled furnace with refractory bricks at your request. According to the drawings, the upper furnace should be closed with an iron door, and the middle mezzanine should have a free moving iron plate, but I don't know who to turn to to make these two things. In addition, the copper pipes and chimney of the small stove next to it have been completed, except for these metal components. ”

Roland went into the furnace and examined it - it must be said that as a member of the original stonemasons and an old friend of Carl Van Burt, Losia did have a knack for masonry. The inner wall of the nearly two-storey dry distillation tower changes evenly, the gap of each brick is basically the same, and the brick joints are also staggered layer by layer, and there is not even a straight joint, which shows that it not only has excellent layout ability, but also has a very serious construction attitude. You should know that even if you use the same drawing, the finished product can be very different from one person to another.

"Well done," he said approvingly, after inspecting it, "I'll have the iron door and the iron plate cast by someone, and then you just need to cover the refractory bricks on the fire-facing surface." ”

"Your Majesty," said Losia after a moment's hesitation, "can you tell me how this furnace works?"

"Why, do you want to be a coking worker too?" Roland quipped.

"Of course not," the other party hurriedly shook his head, "I have never built such a strange furnace before, so I can only rely on guessing where the drawings are unknown." If I can know its specific usage and function, not only can I build the second tower faster, but I can also improve some uncertain areas. ”

I see, Roland smiled, "This kind of furnace is mainly used for dry distillation of coal, you must have seen how charcoal is fired, right? This one is similar, but on a larger scale." The lower layer burns, the upper layer bakes, and the filler is all coal. ”

"Roast coals with coal?" said Losya, surprised.

"That's right, after dry distillation, coal can be converted into coke, which burns at a higher temperature, making it a good fuel for steelmaking. In addition to this, there are several by-products produced during the dry distillation process, and the pipes on the walls of the column are used to collect them, not the exhaust chimneys. ”

"That'...... Why build a small stove next to the stove?

"There must be no air left in the upper layer during dry distillation, otherwise the coal will burn directly," Roland said, pointing to the hole between the two furnaces, "the calcined limestone in the small furnace produces a large amount of carbon dioxide - you can interpret it as an incombustible gas......

"Your Majesty, I know this," continued Losya, "and this part is taught in the evening class. ”

"Then it's easy," said Rowlandon, relieved, as it seems that the work of universal education is being broadened little by little by the efforts of the book, "and the carbon dioxide will pass through the pipes into the upper layers of the furnace, and all the air will be squeezed out, so that the coal can be distilled." As for limestone, it is the gray-white stone that is used to burn cement, and it is everywhere on the northern slope of the mountain. ”

......

After inspecting the No. 1 dry distillation tower, he stopped for a moment by the kiln area when he returned the same way.

Just looking at the busy scene in front of him, Roland's heart couldn't help but feel a little agitated. At first glance, all kinds of brick stoves stand side by side, which looks like a neat red forest, above which dozens of columns of smoke rise, gray, white, and black are intertwined, and together with the plainly dressed workers and backward utensils, they form a very contemporary picture. More than a dozen steam engines are rumbling and humming, pulling conveyor belts to feed pieces of raw materials and charcoal into the blast furnace, and the track system has been laid from the mine to the place, and small mining carts are running between the two places, and the speed of iron ore transfer is no longer than it used to be.

When the steel mill and forge are completed, it will inevitably become another central site of Neverwinter - from ore mining to smelting into steel, and from steel to various raw materials to the processing plant, the flower of industry will be born here, giving humanity otherworldly power and the courage to overcome everything.