bonanza

Chapter 702 No. [-] Copper Mine

The Mavericks won three consecutive championships, and the Bobcats almost didn't hesitate to pick Matt Barnes away from the Mavericks.

Haslem and Matt Barnes are both blue-collar workers, but Matt Barnes is a backup small forward, and Haslem is only the third choice in the center and power forward positions. Naturally, the data is not as good as Matt Barnes. Hi Enns.

The draft day is coming soon, this year they only have three first-round picks, and they are all behind the 20th pick.

Yang Dongsheng originally wanted to exchange two draft picks for a higher draft pick, but after looking at this year's rookies, he gave up the idea.

Even Dwight Howard is just a rough guy, and the upper limit is a super blue-collar.

After the start of the draft, Yang Dongsheng first chose Anderson Varejao to replace Gasol's vacancy.

The second pick was Tony Allen.

Kobe's experience and physical strength are about to reach their peak, and Wade's debut is the peak, so the defensive ability of this position must be strengthened.

The third pick was the Mavericks' own. At this time, there was nothing to pick but Trevor Ariza.

After the draft, a group of veterans such as Robert Horry and Kevin Willis wanted to join the Mavericks and win the championship with their thighs.

One of these two is a power forward and the other is a center. The Mavericks have no shortage of insiders. Yang Dongsheng still let the team continue to invite Gary Payton.

After the draft, Yang Dongsheng returned to Shanghai.

In a few days, Yang Miao is also on vacation!

Yang Dongsheng took Yang Miao to Tibet.

Reading thousands of books is not as good as traveling thousands of miles, Yang Dongsheng still wants to take him out for more walks!
After a day's rest in the provincial capital of Saskatchewan and acclimatization to the altitude, Yang Dongsheng took Yang Miao to the No. 50 Copper Mine of Dongsheng Mining [-] kilometers northeast of Saskatchewan the next day.

Knowing Yang Dongsheng's temper, Ma Chao didn't prepare any welcome ceremony. After a short rest, he prepared a locker room for the two of them, as well as brand-new work clothes and hard hats.

After changing their clothes, the two went up the mountain in a car under the guidance of Ma Chao.

Yang Miao lay in front of the car window, looking at the scenery outside.

The season of their arrival was just right, and an unknown small flower was blooming all over the mountains and plains in the entire mining area. The red, yellow, blue, and green colors mixed together were really beautiful.

The whole car has undergone a special modification, the engine is equipped with a two-stage turbocharger, and the cab is equipped with oxygen-enriched membrane oxygen-enriched equipment.

Even so, Yang Dongsheng still felt a little lack of motivation after climbing to the top of the mountain. The altitude here is too high. The entire mining area is above 4000 meters, and the highest point even reaches 5500 meters.

After crossing the top of the mountain, the mine appeared in front of Yang Dongsheng.

The No. [-] copper deposit is a typical porphyry copper deposit, which is closely related to volcanic activities in ancient times.

Copper-bearing magma intrudes into the Earth's crust, but does not erupt to form volcanoes.

After the magma cooled down, it went through tens of millions or even hundreds of millions of years of geological changes and erosion, and finally formed the mine.

Porphyry copper deposits are generally buried shallow and are suitable for large-scale, mechanized open-pit mining.

Moreover, porphyry copper deposits generally have relatively large reserves. The world's largest Escondida copper mine in Chile is a typical porphyry copper deposit, which contains 8000 million tons of copper metal.

Although the No. [-] copper mine is not comparable to the Escondida copper mine, its reserves are not small.

According to Yang Dongsheng's survey, the amount of copper metal in this mine is more than 4000 million tons. Even if Yang Dongsheng does not move copper mines from other places, No. [-] copper mine is the largest copper mine discovered in the country so far.

However, the disadvantages of porphyry copper deposits are also obvious, that is, the grade is low. The average grade of the Escondida copper deposit is 0.7%, and the average grade of the No. 0.4 copper mine is only [-]%.

If other people come to mine, the amount of copper metal that can be economically mined is probably only more than 1000 million tons of high-grade copper.

There are a large number of low-grade ores with a grade of about 0.2% in the entire mining area, and the amount of copper metal in this part reaches about 2000 million tons.

In addition, there are a large number of copper resources with a grade of only 0.15%.

Yang Dongsheng finally pushed up the copper grade to 3%!

A few years ago, Yang Dongsheng was able to increase the content of uranium-235 in a small piece of fast neutron breeder reactor hundreds of times, but there are still restrictions on large deposits.

In addition to these, another characteristic of porphyry copper deposits is that there are many associated ores. This mine is associated with various elements such as molybdenum, manganese, gold, rhenium, tungsten, tin, lead, zinc, silver, and cobalt.

Among them, molybdenum alone is associated with nearly one million tons, and the reserves of rhenium, tungsten, cobalt and other minerals are also very considerable, which can be comprehensively utilized.

Yang Dongsheng first looked at the situation of the concentrator.

The annual ore processing capacity of the No. 1200 Copper Mine Phase I project concentrator is [-] million tons.

Tibet has a high altitude and cold weather. In addition to the commonly used flotation production lines at home and abroad, the No. [-] copper ore dressing plant also installed a set of air heavy medium fluidized bed dressing equipment.

After experiments in copper mines in Mongolia, they have gained some experience in the application of air heavy medium fluidized bed beneficiation equipment in copper ore processing.

It's just that the technology is not yet fully mature, so some float equipment is still used to be on the safe side.

After leaving the concentrator, Yang Dongsheng came to the tailings pond again.

According to the current grade of the No. 30 copper mine, every ton of first-grade refined copper ore containing [-]% copper will produce about ten tons of tailings.

The first phase of the No. 100 Copper Mine project will produce 1000 million tons of first-grade refined copper ore each year, which will generate about [-] million tons of tailings.

Porphyry copper deposits are associated with various heavy metal elements, and the flotation process will also produce a large amount of waste liquid.

The ecological environment of the Qinghai-Tibet Plateau is very fragile. There is a river next to the mining area, Sashi is about [-] kilometers downstream, and the Yarlung Zangbo River is further down.

These tailings and liquid waste must be stored carefully.

The tailings pond of the No. [-] copper mine is a valley-shaped tailings pond. The whole project is like building a hydropower station. A dam was built on one side of the valley to cut off the entire valley.

The surrounding mountains have also been modified!
Then a high-density polyethylene membrane was laid on the bottom of the valley and around it to prevent seepage to prevent harmful substances from seeping into the groundwater.

Yang Dongsheng reinforced the entire bottom of the valley and the surrounding mountains.

Then the embankment was strengthened, and the embankment was made into a whole piece of rock, which was integrated with the surrounding mountains and the earth.

Yang Dongsheng did not dare to be negligent about the tailings pond. In the history of world mining, dam failures of tailings ponds are not uncommon.

After 2010, Vale, the world's mining giant, suffered two dam breaks in succession, killing nearly 300 people. Due to the large amount of toxic substances contained in the tailings, it caused a huge ecological disaster.

Vale paid more than 100 billion US dollars in compensation before and after the matter was settled.

If Vale is not a symbol of Brazil's state-owned enterprises, I am afraid they will not even have a chance to lose money!

After coming down from the mountain, Liu Weiguo was waiting for him.

Yang Dongsheng winked at Liu Weiguo.

The two walked aside, and Liu Weiguo took out a transparent plastic bag from his pocket, which contained a yellow object.

(End of this chapter)