The installation of coal distillation equipment is the main technical work of the crew, and the members of the chemical team are on the spot.

So far, all the technical work such as installing industrial equipment has not been involved in the labor of the Han people, and the illiteracy and language communication barrier have made this relatively delicate work only done by one's own people, even if it is tiring, it is not a problem. Fortunately, the chemical team was very well prepared for this work a while ago, so the progress of equipment installation was fast and the process was smooth.

In fact, coal coke dry distillation is not a high-tech technology, and the equipment is not too complicated, and there are experts in this area in the chemical group, such as Gui Xianning, who originally did this in the old world.

However, it was only recently that Xiao Guizi barely overcame the psychological shadow of this set of equipment, because if he hadn't met Nicole, Xiao Guizi would have died in a pipeline gas leak accident of the same kind of equipment, which was a nightmare that he never wanted to recall for the rest of his life......

On October 18, the coal retort was opened, and the high-quality coal dug from the chicken nest mine not far to the west was first beaten into pulverized coal by the pulverized coal machine, and then sucked into the hot retort by the vacuum pump, and the pulverized coal was instantly gasified at high temperature in an oxygen-free environment.

The gasified coal dust is then sucked into a steam chamber and condensed into a tank. There are many impurities in the water tank, and after several similar distillation processes, the ammonia in the gas finally combines with the water to form dilute nitric acid. With this thing, silver nitrate is simple, and it will be easy to make glass mirrors with silver mirrors in the future.

Dilute nitric acid is re-distilled to concentrate into concentrated nitric acid, which is an important raw material for making smokeless**. Coal tar precipitated in the dry distillation column is also a good thing, but at this time, this coal tar can only exist in a large pond and cannot be used for other purposes. Therefore, except for Lao Zhu who sent a few women over to get a few iron drums and filled them with some diluted liquid, all the rest were returned to the furnace and turned into fuel. The coal tar diluted with water has complex organic chemical components, and Lao Zhu uses these things as animal medicine, which is said to have a certain curative effect on the skin diseases of livestock, and even for diseases such as foot-and-mouth disease, swine fever, chicken fever, etc.

Obviously, Mr. Zhao and the members of the chemical industry team have no intention of engaging in follow-up organic chemical industry now, and they are most concerned about nitric acid now, because this is the key raw material for the silver mirror reaction.

By this time, the dry distillation of coal had come to an end, and finally a mixture of liquid diluted with distilled water, or more precisely, nitric acid, was poured into a clay pot for storage.

At this time, the smell of ammonia water was all over the plant, which showed that the hydration of coal after dry distillation was not complete, and the composition was not pure, but it didn't matter, the chemical team confidently announced that with time, everything would be on track.

Immediately after that, an inconspicuous problem suddenly appeared in front of everyone - the glass mirror is just a bare mirror, without a frame. Obviously, a glass mirror as a trade commodity needs a frame, wood, plastic, iron and copper.

But now it's just not!

In the face of this kind of thing with low added value, almost zero technical content, and a lot of manual labor, it is simply embarrassing that the traversers are at a loss for a while.

The final solution is not to involve those Han laborers, who are currently very tight, and for the production of mirror frames, Boss Luo took the opportunity to come up with a final solution, which is a one-and-done solution: the wood processing equipment in the cave to produce glulam.

Glulam is a complicated thing, but the process is quite simple – if you don't have high quality requirements for this type of product.

The bamboo or shrub fiber is broken with a crusher, mixed with a small amount of sawdust, stirred with a small amount of water, and then added gelatin, stirred evenly and pressed into a frame shape by high pressure on the mold, divided into two pieces of concave and convex, and then dried and shaped in the oven, and then the male and female glulam framed together to inlay the mirror, and then glued with gelatin, it becomes a mirror with a frame and frame.

As for gelatin, Lao Zhu Ranch has accumulated a large number of leather goods, and it will rot if it is not used again, and the chemical team also boiled glue and boiled experience when making mirrors a while ago, plus this time the fleet brought back some fish gelatin from Sulu is also a very good adhesive, in short, there is no problem in terms of technical conditions.

Of course, if it is mass-produced in the future, chemical glue production will definitely be on the agenda, but this is a later story.

The plan proposed by Boss Luo on behalf of the mechanical group was immediately recognized by everyone.

In this era, most things like mirror frames were made of wood or metal, and glulam was definitely a mystery for this era, because it was difficult to classify it as metal, but it also couldn't be classified as wood, and obviously it wasn't considered stone.

In an era when there was no plastic, no glulam, there was really no fourth solid substance in people's minds that could correspond to it, so this was definitely a selling point, or at the very least, a cool point to pretend to be in front of the world.

And there are various patterns or shapes in the mold for manufacturing glulam, although there are no auspicious patterns, and there are no words that should be on the mirror, such as what flowers are good for the full moon, and the gentleman is dressed in a crown and other old-fashioned words, but the various stripes and geometric patterns on the mold are also neat and uniform, at least in this era, it is also a good level of flower work, and it should be able to attract the attention of the world.

However, when the Australian mirror was sold all over the world, it seemed that the world did not buy this relatively simple pattern, so a special industry appeared - changing the frame industry.

Some people specialize in making a variety of luxurious and beautiful frames for matching Australian mirrors, especially large mirrors, frame materials including gold, silver, rosewood, rosewood, rosewood, the world is recognized that Australian mirrors are indeed excellent, but this frame is too unmatched, many businessmen in the high-end frames inlaid with gold and silver, and then sell the Australian mirrors to sky-high prices, and the profits are actually comparable to the mirrors produced by Australians.

Obviously, this group of time-travelers underestimated the judgment of the ancients, they thought that as long as they came up with something strange and the world had never seen before, they could pretend to be forced, but it turned out that they were wrong, whether it was something strange or something that had never been seen before, the most important thing was practicality and real beauty, obviously, glulam frames could not meet the above two conditions in the eyes of people in this era. Because this kind of frame is not strong and not beautiful, that simple industrial stripe pattern simply cannot make people in this era think it is beautiful, to put it bluntly, it is still a problem of aesthetic differences in an era, obviously different times, people's concepts of beauty and beauty are also different, the longer the time interval, the greater the difference.

Of course, all this is another story......

At that time, almost half a month later, at the beginning of November, the glulam factory outside the cave gate was officially put into operation, so here, the first glulam frame mirror of the new world was born, the mirror is only rectangular, divided into two specifications: 20 cm wide and 30 cm long, which is a large size, and a small size is 10 cm wide and 20 cm long.