Open an aircraft carrier to fight against Japan

It turns out that those brown stones are bauxite ore, while those white stones look like ice crystals, so they are called cryolite. Cryolite and bauxite ore are the raw materials for smelting aluminum. The importance of aluminum alloy goes without saying. It has excellent mechanical properties and low density, so it is widely used in the manufacture of aircraft, engines and other equipment.Lin Yuan thought: "It turns out that the British came here to look for aluminum ore. Can I think of a way to use them skillfully?"

Lin Yuan on the tree was thinking about how to deal with the British, while the black bear on the ground was thinking about how to deal with the roasted rabbit meat. The aroma of meat and honey kept drilling into the nose of the black bear. Animals are afraid of fire. If it weren't for the pile of flames below, the black bear would have already feasted on it.

The black bear looked at the flame from a distance, as if waiting for it to go out. The skills of the British people in building the stove were not bad, the fire was well ventilated, and the flame was burning vigorously without any extinguishment. the meaning of.

Lin Yuan cleverly used a trick to attract the black bear, but it didn't leave, so Lin Yuan asked Cui Rui, "When will this black bear leave?"

Cui Rui said: "It won't leave until it eats the meat, but don't worry, although the black bear will use its paws to climb up the tree trunk, but it's too laborious, as long as we don't provoke it, it will not take the initiative attack us."

Lin Yuan said: "Then let's wait, I don't know when we will wait."

Before Lin Yuan finished speaking, a scene that surprised him appeared. The black bear actually started digging up the soil with its paws, and then piled them up. The clods of soil splashed over and immediately extinguished half of the flames. The black bear did the same and quickly extinguished the flames.

The black bear rushed to the rabbit meat and ate it all in one go, not even a single bone was left. After the black bear finished eating, he walked back to the jungle contentedly.

Then everyone came down from the tree with lingering fear, and Jefferson asked Cui Rui: "Why are there still bears?"

Cui Rui said: "Our roasted rabbit meat must have lured it out. We don't have to worry. Let's chop some wood and build a fence. Bears won't take the initiative to break through the fence and attack us."

Jefferson then ordered his men to chop wood and build fences. While they were busy, Lin Yuan secretly put a few pieces of ore into his pocket.

The wood used to build the fence should not be too thin, but they came to look for ore, and the tools in their hands were hammers, steel drills and other things, and they lacked axes that could cut thick branches. Jefferson's men took knives and chopped The felling stopped, and Jefferson had to order his men to stop the felling.

Jefferson was worried that the black bear would come here again after eating a good meal here, so he sent people down the mountain with Cui Rui to hire villagers to build fences. Lin Yuan knew that prospecting for minerals was a time-consuming job, especially in a strange place For local exploration, prospectors need to walk a lot of roads to find out the ore reserves in various locations and prepare for future mining.

Lin Yuan didn't have time to spend with them, so he found an excuse and left alone. He took the few pieces of ore and went to the industrial area to find Liu Jinqiu.

Lin Yuan handed the ore to Liu Jinqiu and asked, "Does this ore have the prospect of large-scale industrial application?"

Liu Jinqiu said: "It's hard to say, we need to test it." Liu Jinqiu led Lin Yuan to the test center in the industrial area, ground the ore in the pulverizer, took a test tube, and added several solutions Go in, and gradually the ore is dissolved.

Liu Jinqiu picked up a blue-black solution, and said with a smile, "This is the chrome azure indicator, watch it, it's the moment to witness a miracle." After speaking, Liu Jinqiu added the chrome azure indicator into the test tube, and the test tube immediately A purple-red floc appeared.

Liu Jinqiu put the test tube into an instrument and said: "We can often see the solution in various colors, this is because different elements absorb different colors of light in different degrees, so, applying this principle, we can analyze The content of different elements in the solution."

Liu Jinqiu pointed to the instrument and said: "This is the colorimetric analyzer on our Beijing ship. The Beijing ship uses it to check bearing wear. I borrowed it." Press a few times on the instrument, and the instrument makes a "humming" sound.

The colorimetric analyzer was connected to a small printer. Soon, the printer spit out a piece of paper. Liu Jinqiu looked at the paper and said, "If you want to produce aluminum on a large scale with modern industry, The only feasible method is cryolite and alumina molten salt electrolysis. Alumina should be produced from bauxite. Of course, not all bauxite can produce alumina. To evaluate whether bauxite can be used for industrial production The standard for taking alumina raw material is: the mass ratio of alumina and silica in bauxite, and we will be able to obtain this key data from this paper in a short while."

After Liu Jinqiu finished speaking, he pulled the paper out of the printer, looked at it and said, "There is good news and bad news, which one do you want to hear first?"

Lin Yuan thought helplessly: "Why is Mr. Liu still playing with humor at this time?" So Lin Yuan said: "Then let's hear the bad news first."

Liu Jinqiu said with a smile: "The bad news is: this bauxite contains a certain amount of titanium." Titanium is a metal material with excellent performance, which is widely used in the aerospace field. Pure titanium can also be used for the manufacture of electronic tubes, and The electron tube can be said to be the beginning of modern electronic technology.Lin Yuan asked, "Can this be considered bad news?"

Liu Jinqiu said: "Don't worry, the bad news is coming later. Although there is titanium here, the quantity is too small to be worth industrial production."

Lin Yuan smiled and said, "What is the good news?"

Liu Jinqiu replied: "The good news is that the British wish to develop the bauxite in this area will come to nothing. The mass ratio of alumina to silica in these ores is only 3.2. In modern China, the ore with this mass ratio can be used The soda lime sintering method is used to produce alumina, but the only way to produce alumina in this era is the Bayer process, which requires a mass ratio greater than 7, so the British will soon find out that there is no large-scale development of bauxite here. the value of."

Lin Yuan frowned and said, "Is there any way to convince the British that the mass ratio is greater than 7?"

Liu Jinqiu asked, "Why did you do this?"

Lin Yuan said: "The aluminum industry needs a lot of things, let's talk about the electrolysis process, which consumes a lot of electricity. According to the current level of the electrolytic aluminum industry in the world, it would consume 42 kilowatt-hours of electricity to produce one kilogram of aluminum. In our era , Many families can’t use the electricity for two months. It must be extremely difficult for us to build an aluminum industry. If the British can build all the equipment for us, wouldn’t we save a lot of trouble.” Liu Jinqiu said: “ Borrowing chickens to lay eggs? This is a good idea!"

Lin Yuan said: "When you were dissolving bauxite just now, what solutions did you add? We prepared some solutions containing aluminum and added them to these solutions. Wouldn't it be possible to increase the aluminum content?"

Liu Jinqiu thought for a while and said, "This method is not feasible. Those solutions will react with aluminum, just like the chrome azure indicator, which can form a purple-red complex."

Lin Yuan asked, "Then what else can we do?"

Liu Jinqiu said: "Yes, but I have to go to the British laboratory to have a look."