Ai Gelen paused for half a second, and figured it out without exhaling in one breath: this is not a breakthrough new discovery at all, but he has always fallen into the situation of "knowing a lot but not having actual experience", and he has drilled the horns!

He only remembered that the snowflakes that precipitated from the corners of the toilets and barn stables were nitrate, and he only remembered that the soil in these places contained all kinds of bacteria needed to make nitrate from the soil, but he forgot that the nitrate precipitated from the walls originally came out of the soil underneath. Using these soil as an introduction to nitrate production is certainly a sustainable long-term way, but if you are in a hurry to get products, directly using these soil to boil nitrate will definitely solve the urgent need!

Compared with nitrate, it is obviously expedient to boil nitrate directly, and there is a suspicion of killing chickens to take eggs, drying up and fishing, but now the situation is urgent to wait for these "chickens" and "fish" meat to save lives, of course, can not be limited by habitual thinking, everything is thought of to establish a complete production chain before giving up!

Damn, Egger quickly thought again: he let the industrial park make nitrate in King's Landing in the first place because the climate of the land grant was too cold, and there was a shortage of various tools and materials...... But if you dig the soil directly to boil nitrate, it is not required for geographical location at all. If he could have figured this out earlier, Houguan Town and the entire northern realm would have already started a vigorous practice.

......

The lost time can't be recovered, but it's not too late to make amends. After slapping himself a few times in annoyance, Egger did not show a gaffe on his face: "There is such a thing? How much nitrate can be boiled out of the soil dug directly from these corners, and what is the quality?"

"There are some fluctuations, depending on the quality of the excavated soil. "After a brief attempt, my assistants and I came up with the easiest way to tell the difference: crush the alternative soil and sprinkle it on the red-hot charcoal, and the one that can burst into sparks is nitrogenous." Scrape it down layer by layer until the quality begins to deteriorate. In terms of output, a good truckload of nitrate can boil out a small pot, and since we have not been able to find a way to separate salt and other impurities from nitrate, the quality is quite different. ”

"The caravans we sent to various places now have several tasks: they set out to bring the goods of the Night's Watch industry to be sold, and to find the explorers of the nitrate ore to go to work first. As soon as the rest of the people finished selling their wares, they immediately looked for toilets and barns and stables...... The white chips naturally precipitated on the wall are high-quality nitrate, and after scraping them off and storing them, they have to be planed into several layers of soil in the corners of the wall and loaded into trucks. Nina was very attentive to Egger's personal orders, and knew the specific situation well, "Of course, breaking ground in the fiefdoms of nobles of all sizes is often considered ominous by the owner, and in many cases it is necessary to give some compensation to the owner of the land - those who are willing to accept goods will be compensated with goods, and those who are unwilling can also take copper plates and silver coins...... As for the small number of people who want to raise the price, my instruction is to give up directly. Although high-quality nitrate soil is often only a thin layer on the surface, there are no toilets and barns in the Seven Kingdoms!"

A smile returned to Egg's face, this is the benefit of teamwork: he does have a huge amount of advanced knowledge and information that people in this world cannot imagine, but a wise man must make a mistake...... Not to mention that he never thought of himself as a wise man. Accepting the limitations of the student's way of thinking and the shortcomings of not doing it himself, he will encounter this kind of situation from time to time, "he should have figured it out but walked into a dead end for various reasons". At this time, there is a group of smart people in the world who check and fill in the gaps and remind them in time, and great things can be done.

"Very good!" he did not hide his approval, "where is the boiling field, take me to see." ”

"The carriage was outside. As soon as Nina met, she guessed that Iger would see it sooner or later, and she had already ordered a series of arrangements to go down.

......

A moment later, the group rode in a carriage to the boiling ground only a few miles away. The steaming heat can be seen from hundreds of meters away along with the ash smoke from the fuel, and closer to the low walls of the boiling yard, the mounds of earth, coal and waste slag make it look like a battlefield in the age of thermal weapons...... In the context of the war clouds along the Heishui River, and a large number of profitable departments of the industry are reducing the scale of production and tightening their belts to prepare for the winter, the only boiling ground in all these projects that burns a lot of money but will not make any profit for a long time is in full swing, working overtime from morning to night every day, feeding a large number of workers laid off from other departments.

The scene in the workshop is nothing special, except that the previous nitrate production test site has been expanded several times, and then a large number of pots and pans, stoves and stoves in the last nitrate boiling process have been reproduced and arranged in a certain plan, leaving a path in the middle. Nitratemakers who stir the hot liquid vigorously in front of the cauldron, porters who run around pushing small carts and stop from time to time to leave a shovel of coal, and collectors who take out pieces of white and yellow nitrate lumps at the bottom of the pot, break them up, carefully put them into clay pots, and then send them to the centralized storage place......

People came and went in full swing, and in a trance, Egger thought that he was in the smelting area of Houguan Town.

"Thanks to the king's dense population, we brought a large amount of nitrate from all over the place before the dragon queen landed, and there is still a small half of it left. As for fuel, the royal lord was strict with firewood, and we could only buy a large amount of low-quality coal from the river, which was cheap, but burned very little and smoked...... Very few people use it. Fortunately, boiling can be done in a semi-open environment, and there is no need to think about it so much. ”

Cobain, who came with him, also remembered something at this time, and exclaimed with an expression of waking up from a dream: "Ah! A few weeks ago, the person in charge of the nitrate boiling plant reported to me a situation - a lot of salt will sink in the pot during the boiling process, and I have been thinking about how to use this to extract the nitrate separately during this time. Now that I think about it, isn't this what adults say...... 'Different substances have different solubility in water, and the solubility of the same substance will also change at different temperatures'!

Smart, even if it's not right, it's not bad. Iger probably understood that the salt and nitrate in the mouths of his subordinates actually corresponded to the chemical chloride salt and nitrate, and the latter thing was the fire nitrate he wanted. Although I have not memorized the solubility curves of these two types of substances at all, the method proposed by Coben at this moment can at least further remove the impurity chloride salt, if not it can purify the fire nitrate.

But at the moment, Egger was in no mood to praise people, he couldn't wait to ask: "What about the finished product warehouse, how much nitrate has been produced during this period of time?"

"Your Excellency, come here. ”

......

After experiencing a series of surprises, Egger couldn't hide the surprise and disappointment on his face when he saw the finished product: "Just a few cans? ”

Nina snorted and laughed, "Your Excellency, you misunderstood, this is this morning's production. You've told me so much that this thing is very important, how dare I pile it here...... The daily output of the boiling plant will be loaded and sent to the Black Wall Fort to be properly stored on the shelves of the first-class warehouse that is fireproof, anti-theft and moisture-proof. I haven't been there for a few days, but now I guess there's a small half-storehouse. In fact, it stands to reason that the first batch should have been on the way to the land grant, but unfortunately the Dragon Queen's fleet blocked Blackwater Bay, and the eunuch army cut off the King's Road to the north, so it has been blocked in the Black Wall Fort. ”

"My lord, most of those are half-finished. Cobain took the initiative to ask, feeling that he couldn't bear to hand over a batch of mixtures when he thought of a way, "Give me half a month...... No, in a week, I can purify them all!"

"No, I don't have that time to wait. Egg breathed a sigh of relief and waved his veto, "Pack your things, bring your trusted assistant, and prepare to give me back the land." Nitrate production can't be carried out in the ice and snow over there, but nitrate can be boiled...... Nina, immediately send someone back to Blackwall, arrange for the porter to load the nitrate in the warehouse onto the Blackbird as soon as possible, it's too late today, tomorrow at noon, King's Landing will be open for half a day, right? I am going to meet King Stannis or the Prime Minister at that time, and then I will leave for the north at once. The purification thing, the fire warlock of Houguan Town can also do it, and the separated salt can just solve the dilemma of lack of salt in the donated land. ”

——

[The 60,000-word challenge will start in June, and I will ask for recommendation votes for support.

Another: In fact, 60,000 words can only be regarded as a plan, not a challenge...... If the total number of recommended votes can reach 190,000 this month, 80,000 words will be directly challenged in July!]