The next two steps of the Lubrande process require high temperatures, which is the simplest and easiest chemical reaction to achieve, and it is also a process that has appeared since ancient times. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

In the Bronze Age, the requirements for temperature were not high, and in the age of iron, the requirements for temperature rose sharply, and the process of iron-making was also high temperature, with a higher temperature, so that the iron was reduced and melted and turned into a usable material, which was a process of iron-making, and in fact, it was also a process in which high temperature played a role.

The same is true of the Lubland method, the remaining two steps are to treat sodium sulfate with the help of charcoal and limestone to produce calcium sulfide and sodium carbonate, which requires a high-temperature reactor.

With the conditions of the Northern Song Dynasty, it was impossible to make a precise and convenient reactor, Zhao Xin was ready to make it simply, and first went to the blacksmith shop, he only knew a little about the blacksmith shop before, and felt that it could be done.

The Lubrande method is simple, but it is not a simple saponification reaction, if the previous choice is not soda ash, it is soap, you don't need to be so troublesome, make a big iron pot, cook slowly, the whole saponification reaction, the temperature requirement is not high.

Soda ash itself has a role, used for steaming buns, removing excess fermented acid, in many chemical products, the future involved in glass manufacturing, is also an important raw material, this purification problem must be solved, so, Zhao Xin spent so much effort.

The chemical manufacturing of high-temperature reactions, such as ordinary pots, is not good, the temperature cannot rise to such a high level, and ordinary iron pots can easily lose heat, and it is not easy to maintain the temperature.

Ordinary iron-making furnace can also ensure sufficient temperature, but it is not suitable for use, Zhao Xin just designed a new one according to the principle of the whole reaction.

To put it bluntly, this is just an ordinary large iron box, which is required to be large enough, and there must be a chimney on it, which is more reasonably arranged, and can collect gas.

Most of the smoke produced by calcination is harmful, which also contains a large amount of carbon monoxide, which is the culprit of tobacco poisoning, if it is not emitted upward, it is likely to cause a huge impact, carbon monoxide is highly toxic, to the 21st century, there are a lot of cases of carbon monoxide poisoning every year, which are coal and charcoal, incomplete combustion, the carbon monoxide produced, in a closed room, enough to kill.

In addition to carbon monoxide, the lack of high temperature is still dangerous, and the calcination process in the future also needs to be in a secluded place.

There is no need to make too much, the entire calciner is only about 1 material, and the blacksmiths don't know what Zhao Xin is going to do, or do it according to Zhao Xin's statement, this calciner takes time, 3 blacksmiths, it took a total of 2 days to do it, among which Zhao Xin has been personally to the scene, controlling the manufacturing process.

In the Northern Song Dynasty, because the materials are not up to par, it is impossible to make a thin and efficient reactor, in order to prevent explosion, or the leakage of chemical substances, you can only choose, the most stupid way, the whole iron box is made of a large amount of iron, the whole thickness is quite large, and it is relatively bulky.

Processing iron box, the best way, is to weld some flat iron, to weld together, convenient and fast, the Northern Song Dynasty has no welding process, but there are willow nails, as far as possible to ensure that the bottom is completely made of a piece of iron, to prevent leakage, and then above, with willow nails to close, as far as possible to do a good job of sealing, in order to reduce the loss of heat.

This is a solid reaction, to build a reactor, but to let the temperature not be lost a lot, to ensure that it will not be affected by the outside world, in the degree of fineness, do not need to be too deliberate, and even a large number of burrs on it, have not been processed.

Even so, this iron box that is not too big is about one stone, but the specific gravity of iron is much higher than that of grain, which is almost 500 catties.

The blacksmith shop in Miaojiazhuang is mostly to create some farm tools, and has only recently started to make arrowheads, because of the previous accumulation, coupled with Miao Yuan's help, has reserved about 2,000 catties of iron, basically more than half, which is used here, and it is also an astonishing cost.

If this soda ash reactor becomes an industry, not to mention Miaojiazhuang, even the whole Baozhou can not bear it, a material of the reactor is a small meaning, 10 materials, 100 materials, or even 1000 materials of the reactor, that is a big deal, for the consumption of steel, is extremely amazing.

Such a heavy thing, plus other stoves, charcoal, a total of more than 3,000 catties, in the village to start directly, not very suitable, even if there is a chimney, after the carbon monoxide escapes, it will affect people, especially some old, weak, sick and disabled children.

In ancient times, it may be that dense markets and villages are not easy to find, and empty fields are still easy to find, Zhao Xin thought about it, and went to the training ground of Longbow, so that the Longbow team can produce some people, huge iron boxes, various stoves, and a large amount of charcoal, and there are a lot of personnel needed, this process will be very long-lasting, and there are many personnel needed.

It's the best of both worlds. The reactor is very heavy, the weight of a thousand catties, maybe for Sun Ji, one person can lift it, but it is not very regular, some are too big, it is not easy to use force, two or three people can lift it up, it is relatively easy.

Zhao Xin suddenly came to the training ground, which made Sun Ji and the others a little surprised, from the beginning of concentrating on manufacturing, Zhao Xin did not go to the training ground, as Zhao Xin's bodyguard, Sun Ji was in the village, and at least one person followed Zhao Xin, Zhao Xin always ran to the blacksmith shop these days, making that weird iron box, I don't know what to do.

Zhao Xin's request, Sun Ji thought about it for a while and satisfied, there were not many people who wanted it, and the time was not long, and he also wanted to know what Zhao Xin wanted to do.

With a wave of his hand, the entire Longbow team went, and there were a lot of things in the reactor furnace, plus thousands of catties of charcoal, stoves and something.

After only a few days of training, these longbowmen have changed their appearance, sufficient nutrition and reasonable training methods, so that these strong people have changed their appearance, their strength is greater, and their discipline is also very good, three or five people, they will lift this reactor.

Thick iron box, huge chimney, how strange to look at, and several huge furnaces, which will continue to provide heat to this reactor, for the time being, Zhao Xin has no way to find coke, so use charcoal instead, when the number is enough under the premise, charcoal can provide quite enough heat, enough to support the completion of this reaction.

Lubrand's alkali method, the first step, that is, through the concentrated sulfuric acid replacement of hydrochloric acid, the generation of hydrochloric acid and sodium sulfate, this is not a high-temperature reaction, the temperature can not exceed 425 degrees, generally at room temperature, slightly heated is good.

Concentrated sulfuric acid, under normal circumstances, does not react with iron, unless the temperature rises, under the premise of ensuring a certain temperature, this reaction process needs to be carried out in the lead chamber, and only lead can resist the strong oxidation of concentrated sulfuric acid

Here, this step is not adopted, which saves a lot, and there is no need to make a lead chamber, not to mention the corrosive effect of concentrated sulfuric acid in large-scale production, it is just a high-temperature calcination process, and it is enough to pay attention to the temperature and carbon monoxide.

Sun Ji and they also came to watch, because of the previous longbow matter, so that Sun Ji did not dare to underestimate any opinion things that Zhao Xin made, in Sun Ji's opinion, Zhao Xin is really a fairy means, a simple, in anyone's opinion, a very simple bow, but it has a huge power, it took a few days to make it, it should not be simple.

They couldn't understand how this was used, and they were talking about it, more about whether it would be a weapon, because the iron box and a lot of charcoal seemed to be smelted, and it was difficult to make a peerless weapon, similar to the Falling Moon Bow.

Especially Xue Yu, Sun Ji already had a Falling Moon Bow in his hand, and his strength was almost too good to pick up the Falling Moon Bow, but Zhao Xin promised to get him a Force Reduction Bow, and looked at the iron box with an expectant expression, his heart was full of anticipation.