Wang Yong and the three of them hurriedly came to the barracks, took the Thunder Eagle over the asphalt lake, and only took ten minutes to reach the kiln factory in the south of the base. The clay in the kiln has been almost excavated to meet the needs of the cement production, so now only a small number of workers remain here to fire wash basins and flushing toilets to provide sanitary ware for the newly built houses.

Wang Yong ignored Sledgehammer and Niu Da and the two were still immersed in the excitement of flying, and hurriedly found the person in charge here, David, who was also one of Regan's previous ten servants.

David was very surprised when he saw Wang Yong, and he didn't know what this boss was crazy about, so he actually came to the kiln factory in the middle of the night.

And Wang Yong asked directly: "Have you excavated clay or found weathered granite and ore with granular transparent crystals in this vicinity?"

Seeing that Wang Yong was so eager, David thought about it for a while, then nodded and said, "Weathered granite is often seen, and we also use it to add it to Tao Pi, and the effect is very good." We also have the kind of ore with crystals you mentioned, and we also added it to the clay. ”

Wang Yong hurriedly said, "Hurry up and show me a piece." Dawei didn't know why, but he still ordered someone to go to the warehouse to pick it up, and while waiting, Wang Yong asked Dawei a lot of questions related to that kind of ore.

Between the two questions and answers, Wang Yong learned that the original feldspar and that kind of crystal ore were added to the clay only recently, and after adding these two materials, the quality of the fired pottery was much better than the previous one, and the appearance was smoother and more delicate than the pottery fired before. Recently produced pottery has been inspected and shipped to the villages, and now there is only a small amount of stock in the kiln's warehouse.

Wang Yong also learned that the application of these two materials was due to a new refugee chatting with people while mixing clay, and accidentally the clay fell to the ground, coincidentally, this place used to be a place where weathered granite and that kind of crystal ore and some other waste materials were piled up, and there was still a lot of powder left on the ground at that time. And the fallen clay was stuck with a lot of powder.

At the time, the worker was afraid of being punished. In this way, the clay mixed with waste powder is made and molded, and then it is calcined in a kiln. But when the pottery came out of the kiln, the worker found that the washbasin stained with waste powder was much better than the others, so he began to ponder it.

After many verifications, he found that the quality of the pottery burned from clay with several waste ore powders was much better than the previous one, and finally he reported this discovery to the foreman, who in turn reported it to David, the person in charge here.

When David learned the news. He also personally verified the workers' statements, and later, after many experiments, various waste powders were eliminated one by one, and finally it was found that only weathered granite and the kind of ore with crystals were useful for firing pottery, which could improve the quality of pottery.

David also gave the latest clay recipe to Wang Yong, who didn't know much about it. Just casually looked at it.

At this time, the person who took the ore came back, Wang Yong hurriedly walked a few steps, grabbed the white ore in the man's hand, carefully examined it at the oil lamp, and crushed the fist-sized ore with true qi, observing the granular crystals in the powder.

During this period, Dawei and Niu Da and Sledgehammer watched stupidly on the side. No noise was disturbed.

Long. Wang Yong pointed to the pile of powder in his hand, turned his head and asked David, "Is this the powder you added to the clay?"

Dawei shook his head and said, "That's how it was at first. But then we found out that only those granular crystals in the powder of this ore worked, so we only used the crystals inside. ”

Wang Yong asked curiously, "How did you pick out those crystals?"

He said proudly: "This is very simple, after the ore is crushed, put it in the finest mesh sieve, and then filter it in the water several times, and the rest is basically all this crystal." By the way, I also relayed this discovery to other kiln factories, but I don't know if these things are useful for firing cement. ”

Wang Yong laughed and said, "Haha! Yes, of course it works, these things are not only useful for firing pottery and cement, but also the main material for firing glass." ”

Sledgehammer, Niu Da and Dawei asked curiously in unison, "What is glass?"

Wang Yong thought about it and didn't know how to explain it, so he said perfunctorily: "You'll know later." Then he wrote a long list and told David to prepare the materials.

After reading the list, David said with a bitter face: "Boss, most of the materials you need are not available here." ”

Only then did Wang Yong react, this was a kiln factory, not an alchemy room, so he asked David to prepare the materials here, and then handed over the remaining list of materials to Sledgehammer and Niu Da, and asked them to take the Thunder Eagle back to find Sophia and ask for it, and then bring Sophia and the three of them together.

After Sledgehammer and Niu Da left, Wang Yong recalled the knowledge about glass while constantly refining his ideas in his mind.

When David prepared the materials that the kiln factory had, and then looked at the workers who were pushing the cart to send the materials, Wang Yong directly sent the workers away, and then threw David a spiritual void ring, collected the materials and let David lead the way directly, and find an idle small kiln.

While David led the way, he happily played with the Spirit Void Ring, and not long after, the two came to the edge of the kiln factory and found an idle small kiln.

Wang Yong asked David to activate the heated magic array, and after a while, the temperature in the kiln reached about 1,500 degrees, which was the benefit of the magic array, and the temperature was raised very quickly.

Seeing that the temperature was about the same, Wang Yong took off the magic crystal, let the temperature in the kiln slowly drop, and calculated the time, when Sophia and the others came over, the temperature in the kiln was almost just right. After all these preparations, all that remains is to wait.

During the waiting period, Wang Yong chatted with Dawei for a while, mainly asking Dawei about the confidentiality of various material formulas. Dawei's answer is very simple, it is impossible to keep it completely secret, and workers who have worked for a period of time can roughly know what materials are in it as long as they look at the mixed blanks.

The reason why the firing methods of cement and pottery have not been spread until now is that the workers who mix and fire the kiln are still slaves and are extremely loyal. Wang Yong secretly called it a fluke, he didn't have a hot head at the beginning, and he destroyed those slave contracts, otherwise the current secrecy work is really not good.

Because it was the middle of the night, the weather was very cold, and Wang Yong opened a small crack in the kiln door to cool down the inside, and when the temperature inside dropped to a temperature that people could bear, Sophia and the three of them also arrived.

Wang Yong looked behind them and asked in surprise, "What about the sledgehammer and the cow?"

Sophia yawned and said, "They can't say it, they can't help much anyway, they went to see the people in the cave." ”

Wang Yong nodded to indicate that he understood, and then asked, "Brought them all?"

Sophia nodded and said, "Well, I brought all the inventory with me." ”

Wang Yong beckoned and said, "Let's go, go inside." As he spoke, Wang Yong had already taken the lead into the kiln. David, Sophia and the others nodded, which was regarded as a greeting, and then the four of them followed Wang Yong and rushed in.

When they arrived at the kiln, a lot of torches were lit for lighting, and everyone worked together to clear a large open space.

Wang Yong directly made ten relatively deep second-grade smelting pots with two layers of heating out of spars, and then put various materials into the smelting pot according to different proportions. Finally, for convenience, Wang Yong directly used fire-based magic to heat the smelting pot, and asked everyone to pay attention to the changes in the materials in each crucible and record them one by one.

With the continuous heating, the materials inside the smelting pot began to melt slowly, and Wang Yong controlled the temperature of the magic flame to slowly drop, so as not to burn the materials inside into gas vaporization.

Sophia and David circled around the ten smelting pots, stirring the ingredients inside the pots from time to time to mix them evenly.

When the materials in the crucible have turned into solutions, Wang Yong stopped heating and waited for the solutions to cool down to a plastic form, while observing the fineness of the solutions in each smelting pot.

The temperature of the solution slowly dropped, and when the solution became very viscous, Wang Yong asked everyone to help out, and used a spar rod to pick up some solution and put it on a spar slab prepared in advance.

At this time, it was seen that the billy of various materials was different, and the solutions burned out were also very different.

Each of the five people is responsible for two smelting pots, but none of them can really use the spar rod to pick out the solution that is about to solidify, and the solution in the pot is either too thin to pick, or because it is too dry, it has been fixed and formed because it has cooled too quickly.

Wang Yong was not frustrated, but checked the wastes one by one, and according to Sophia's records, he found a formula that was relatively close to glass among the ten batching methods, and then based on this formula, he made small-scale changes to the ratio of various materials, and then tested it again.

This kind of experiment is extremely boring and boring, but Wang Yong's mood is getting better and better, because with the continuous experiment, the liquid burned by the smelting pot is getting closer and closer to the liquid glass.

I don't know how many times I experimented, but in Wang Yong's excited cheers, the formula and the corresponding temperature of the fired glass were finally determined, and Sophia and the others were also excited, because their efforts were rewarded.

Wang Yong picked out a large mass of viscous liquid from the smelting pot, carefully placed it on the clean spar slab, and then covered it with another spar slab and compacted it vigorously.

When the molten glass sandwiched between the two spar slabs cooled, Wang Yong moved the spar slabs on top and looked at the solidified flat glass.

Wang Yong stretched out his hand to test the temperature of the glass, and then picked it up and looked carefully, although the corners of this glass are very irregular, but those are not the point, Wang Yong mainly observes the transparency and clarity of the glass. (To be continued.) )