The current buildings in Outer Mongolia were basically built in the 1950s and 1960s, and a large number of expansions, renovations, and new projects are waiting for the Chinese.
These projects also require a large number of construction workers. Due to the nomadic habits of the Outer Mongols, they are unable to do construction projects.
Since the 1950s, most construction projects in Outer Mongolia have been completed by Chinese workers. Currently, there are 20,000 to 30,000 people engaged in construction work in Outer Mongolia.
In the mid-1960s, when relations between China and Mongolia were tense, the former Soviet Union sent a force called the "Construction Brigade". Because the number was too small, it could not do much.
So now, the only construction companies and construction workers with the lowest costs are Chinese.
For all construction projects, whether Mongolia is willing or not, Chinese construction companies must be hired to hire Chinese labor, which is economical, affordable and convenient.
In this way, the construction project funds will be returned to China, as well as the construction materials. Only Chinese ones are of high quality and low price, so we have to buy Chinese ones.
When I stayed in a hotel in Outer Mongolia, I saw that ceramic tiles, plastic steel windows, sanitary ware, electrical appliances, decorative fabrics, furniture and kitchenware, etc. were all made in China.
These have completely changed the electrical standards of the Soviet Union decades ago, such as sockets. You can see Chinese and Russian sockets in hotel rooms, and the Russian sockets are in a state of being eliminated.
It is not difficult to see that all the funds from Outer Mongolia are flowing back to China. This is their helplessness. Their dependence on the Chinese economy gives them no choice.
Of course the Mongolian government understands this, but currently has no solution.
Diplomacy should be reserved, but it should be more frank. Don't mention friendship, just talk about mutual benefit and reciprocity. When economic means are enough to control this country, if we don't use them, they will still laugh at you as a fool.
During the few days in Outer Mongolia, Han Peacock summarized his feelings: Outer Mongolia is a small country with small people and petty people; China is a big country, big brother and big enemy!
China's diplomacy over the past few decades has actually been relatively naive. Now it needs to change, turning sloganeering diplomacy into strength diplomacy. When reasoning doesn't work, politics must be adopted.
And now, with the global financial crisis, victims are everywhere. Countries that used to rely on oil and minerals to dominate are now on their knees, so Outer Mongolia is no exception.
Therefore, it is the best time for Han Kongque and others to come to Outer Mongolia at this time.
We came to a big river. It was a river in summer but disappeared in winter and spring. It was already late autumn and there was not much water flowing in the river, but the river channel could still be found.
If we come here next summer, this river channel may have disappeared, so this is the best time to pan for gold.
"We're just going to find a place to dig for gold like this?" Usu Bayar looked at Han Peacock with a strange look on his face.
Han Peacock smiled and said: "If you don't try it, how do you know there is no gold here?"
"That's right. This is a gold river. No one knows which section has the highest gold content." Usubayar thought for a moment and had to admit that this stupid method was also an option.
"I'm here to pan for gold this time. I haven't panned for gold yet!" Huangshan grabbed the tools and prepared to be a gold digger.
The gold separation technology in placer gold mines is relatively simple, and the main tools are chutes, flow plates and gold pans.
The chute is 4 meters long, 0.6 meters wide, the inverting plate is 0.16 meters high, and the installation slope is 5-7°. The rod screen is welded by steel bars with a diameter of 15 mm, and the gap is 15 mm.
When terrain conditions permit, the chute can be placed directly on the bottom of the sand ore bed. Before operation, lay sackcloth or thread blanket on the bottom, and place grids and battens on top to secure it tightly to prevent the flow of the ore layer.
The flow plate is made of easily fluffed basswood, willow and poplar wood, 2.1 meters long, 1.1-1.3 meters wide at the top, 0.9-1.0 meters wide at the bottom, with an inclination of 15-18°. During operation, the flow plate can be firmly placed on the bracket or
On a paved slope.
Gold pans, commonly known as gold dustpans, are made of basswood or willow and are generally 600-700 mm long, 350-380 mm wide and 110-120 mm high.
Its shape is triangular from the side and trapezoid from the front. It is composed of two triangular and two trapezoidal wooden blocks. It is a commonly used gold selection tool in placer gold mines.
Before mineral processing, dig a rectangular mineral processing pit, install a chute or flow plate in the pit, lead the surface water up the wooden chute or flow plate, pour the excavated ore onto the chute, and use an iron rake to continuously rake on the rod screen
, exclude larger gravel, remove the layering strips after 4-8 hours, rinse the grid strips with water, and wash the lining material repeatedly.
Place the coarse concentrate in the gold pan (about 60-70% of the capacity). After injecting a certain amount of water into the pan, swing it up and drain it continuously. The sediment will flow away with the water, leaving only a small amount of gold particles.
and heavy minerals. At this time, more careful operation is required to remove the gold minerals and leave gold particles.
Of course, this is the best case scenario. In fact, in the process of gold panning, it is good to find gold once out of ten times.
Of course, if you encounter a real golden river, you will definitely gain something every time.
Now, this river is indeed a gold river, but the gold content of this newly formed gold river needs to be tested.
Sure enough, after searching several times and not having the right skills, at the end of each time there was nothing left, not to mention gold nuggets, not even gold sand.
"Isn't there no golden sand here?" After several visits, Huangshan has completely lost confidence.
The Golden Demon glanced at Huangshan and said, "Do you think gold mining is that easy? If there really is a lot of gold sand here, can we still wait for us to come here to pan for gold?"
"Now we are beneficiating the ore. When we find the gold nest, more alluvial gold will be produced. If we are lucky, we may also find natural gold nuggets." Usubayar said with a smile.
He has been a gold-digging warrior, so he knows best how to find gold. If gold is really so easy to find, wouldn't all of them gold warriors be rich?
"Change the place! There is no gold in this section." Mu Ling said at this time.
When Han Kongque heard this, he smiled bitterly. How long had it been before he had to change places?
"You go dig sand in the river, and I'll dig for gold. How can you find gold if you can't hold on for such a short time?" Han Kongque said.
Of course, if you want to find gold, you must ensure that there is gold in the river, otherwise you will not be able to find it by any means.
And now someone has proven that there is gold sand in this river, it's just a matter of how much.
If there is gold in the river, take advantage of the fact that the specific gravity of gold is much greater than that of sediment, and wash away the sediment with water, you will find gold.
It sounds very simple, but it is actually a heavy and boring physical labor. In the process of gold panning, it requires a lot of patience, and Huangshan obviously has no patience, so he gained nothing.
Han Peacock took the golden dustpan. Now inside the golden dustpan is the sand and gravel left after rough selection. If there is gold in it, the gold will be at the bottom.
At this time, remove the largest stones on the top, and carefully wash the rest. This process is like washing rice, retaining the heaviest substances at the bottom.
Washing rice is to find out the gravel and sand, but here, the gravel and sand are washed away, leaving the heaviest gold.
In this process, the further back you go, the more careful you must be, otherwise, it will be washed away together with the gold sand. Just now, Huangshan found nothing because it was washed too hard at the end, so in the end there was no harvest.
Han Kongque's movements were much gentler than Huangshan's, and his control was also stronger, so in the end, some fine grains of sand were actually retained in his golden dustpan.
Of course, these grains of sand are so tiny that you can't even see them if you don't look carefully, but in the end the Korean peacock found the gold sand.
"Isn't this gold? It doesn't look like it at all." Huang Shan said.
"This is indeed not gold sand. It can only be said to be sand containing a little gold." Han Kongque said.
These grains of sand are so small that it is not an exaggeration to say they are powder. However, they are indeed grains, not powder.
"This is still gold sand! Why didn't I screen it out just now?" Huangshan looked at it strangely and took one of the grains to examine carefully.
The golden demon looked at these golden sands and said: "The golden sands here are far worse than those in Tibetan areas."
"Yes! How can gold jewelry be made from such gold sand?" Huang Shan said.
"If you want to refine gold, you still need to grind it once. If there are sparkling impurities, it is gold. Take it out carefully immediately. Gold mining is not about robbing the vault, but about carefully sifting like looking for a needle in a haystack. You may not find much in a day.
But there are only a few grams, and over time, you will have considerable wealth." Han Kongque explained.
"So troublesome?" Huangshan said a little disappointed.
"Is this troublesome? To get pure gold, you still need to process it!" Mu Ling sneered.
There are two types of gold extracted from sand. One is sand mines in dry lands. For example, many African countries, Indonesia, Myanmar, Tajikistan, Outer Mongolia, Kyrgyzstan and other countries have relatively abundant resources.
The alluvial gold in dry land can be extracted with alluvial gold equipment. The various processes of placer gold equipment include simple chutes and advanced centrifuges, and the recovery rates are also different.
The other is sand in the river. For rivers with water, gold mining boats are used. The most commonly used is the chain bucket gold mining boat. The sand deposits in the river are dug up with a bucket, and then gold separation equipment is used to sort out the gold.
Collect and finally extract the gold.
Refining alluvial gold into gold requires several steps. Generally, there are two methods, one is fire alchemy; the other is electrolysis to extract gold.
In pyrometallurgy, the ore must first be crushed, beneficiated and enriched by heavy sand method, and then refined in a furnace. Electrolytic gold extraction uses sodium cyanide solution to dissolve the gold in the ore, and then extracts the gold through electrolysis.
With this refining method, the purity of gold can reach 99.9%.
Gold mainly exists in a free state, so the "gold panning" method is traditionally used, which uses the principle that the density of gold is much higher than that of sand. (To be continued.)