The Treasure Hunt of an Antique Dealer

There was a lot of people and strength, and dozens of rocks, large and small, were soon hewn out. Then everyone’s luck was not as good as Zhang Nan just now: after turning over and over and looking at all the large and small stones, Xie Jianliang was in one of the heads. A small diamond with a size of up to two to thirty cents was found on the surface of a large and small stone.

With a group of laymen still with a little disappointed expression, the three experts were a little ecstatic when they found the second diamond.

"This is definitely a bonanza, absolutely!"

The discovery of a diamond may be a unique case of tens of thousands of species. Huaxia did not hear a second diamond found in the field where Changlin Diamonds were found, but once there is a second case, it is 100%!

After moving all the stones dug out after deep-fried loosening to the camp, Zhang Nan took advantage of this effort to pry down the diamond the size of a soybean.

An electronic scale weighs more than 2.5 carats.

"Zhang Sheng, how big a finished drill can this be processed?"

Xiang Zhangsheng took it and studied it for a while with a magnifying glass, and said, "I am not an expert, but this one has a good original shape. There are no inclusions or cracks on the inside and on the surface. It should be able to retain 60 to 70% of its weight."

Return to Zhang Nan, "1.5 carats should be fine."

Nicole on one side said: "Why, do you want to keep it for yourself?"

Smiled, "This is the first diamond we found, and the first diamonds found in every mine will be processed and set into jewelry.

Regardless of its size, the future will be the best witness of our diamond empire. "

Nicole took it, "It's just a bit smaller."

Upon hearing this, Zhang Nan said helplessly: "My dear, this is Carat Diamond!"

"Only those above 5 carats are counted."

Speechless!

I asked for it, and now my two American women obviously have no love for polished diamonds under 5 carats.

…

The stone crusher is ready and the diesel generator engine comes.

Because the stone crusher I brought this time is a super miniature thing, the stones inside should not be too big, the guys took out the hammer and chisel and carefully smashed the stones open.

Alyosha was jumping around at that moment, and he found a pill!

A group of people asked: "How old?!"

Smashing diamonds, it's still a rich ore, it's a bit like smashing golden eggs and opening big prizes, it's a lot of fun!

Besides, there is not even a birdman within millions of square kilometers except for their own people. Guan Xingquan and Paul are still searching for any predators on the west side of the island. The bodyguards have not been so relaxed for some time.

let's play.

Xiang Zhangsheng saw Xie Jianliang taking out a bucket of diiodomethane from the tent where the supplies were piled up, and stepped forward, "Old Xie, do you want to use this?"

Xie Jianliang's expression was a little serious, and when he heard Xiang Zhangsheng's words, he said: "Xiang Gong, Lao Tang and I feel it is better not to use this stuff. It is too toxic. What do you think?"

"I also feel it's best not to use it, but we will spend more time."

The three of them put together and put things together with Zhang Nan, hoping that the boss would agree with them.

This thing is used for beneficiation, in order to speed up, but it will easily cause pollution when operated under crude conditions.

The process of selecting diamond ore is very complicated, but the simple one is to crush the kimberlite first, and then separate the heavy mineral diamond from the light mineral waste rock with a specific gravity liquid.

The third step is to use an X-ray blower to automatically sort diamonds from other heavy minerals by using the principle that diamonds fluoresce under X-rays.

Finally, the heavy minerals sorted by the x-ray blower pass through the special grease belt, and the diamonds that have slipped through the net will be stuck by the grease, because the diamond has a special lipophilicity.

The mines of mechanized mining generally use this kind of beneficiation procedure, and the primary ore and secondary ore are the same.

The specific gravity of diiodomethane is 3.32, and the specific gravity of natural diamonds is 3.52. Natural diamonds will sink in the specific gravity solution, which will greatly accelerate the speed of beneficiation.

However, the toxicity of diiodomethane is not small, and it has great impact on the environment and human body. It should not be contaminated during operation. It is best to wear a gas mask, not to mention rubber gloves. Therefore, although the three experts brought this most convenient diamond specific gravity liquid this time, they would be reluctant to start in a natural environment where there is no pollution at all.

What to do then?

As with the boss, Zhang Nan certainly doesn't want to use poisonous things.

"Then what to do?"

"Use the method of panning for gold."

"Then do it!"

All the ore is weighed first, a total of 118 kilograms. When the final number of diamonds comes out, the content of the rough diamond near this location can be known.

In this way, choose a few more points, and then drill a few holes with a drilling rig, which can measure the taste of the ore of this rock tube.

Start the stone crusher, connect a metal bucket at the exit, and fist-sized stones all go in and are crushed out.

There is no wood for screening shelves. Fortunately, there are many people and few ore. Take out all the stainless steel washbasins and iron buckets and wash them!

There is water at the edge of the camp, and three experts will give you a demonstration.

First put two large handfuls of gravel into a bucket, shake it for a few times, pour out most of the water, and then pour it into a stainless steel basin.

Add water and shake to layer the ore: just like gold panning, diamonds with a larger proportion will sink, and as long as you are not blind, you can see the animal difference between useless waste stones and diamonds.

Get rid of the waste rocks that can be easily released from the beginning, UU Reading www.uukanshu. After scouring through com, two or three times, the remaining animals are relatively small gravel.

Tang Jichao and Xie Jianliang's craftsmanship is more proficient than Xiang Zhangsheng's craftsmanship. They are worthy of being from the geological army, and all of them are good at gold mining.

The fastest was Tang Jichao. After discarding two batches of waste stones in a row, only the last layer of stones remained at the bottom of the washbasin in his hands.

Putting the basin on the ground, a small stone was detected from the inside, but this charming shiny stone was reflected in the sun.

"Diamonds, about 0.5 carats."

Spread on the palm of your hand, this is a typical crystalline rough diamond with a little yellowish color.

"Is the color bad?"

Zhang Nan asked.

Tang Jichao looked at it with a magnifying glass and said: "i or j, valuable, absolutely gem-level, it should be very good after polishing, and I basically didn't find any flaws in it."

After that, put this small diamond into a small airtight plastic bag that was prepared a long time ago.

Tang Jichao picked out two gray-brown stones, one large and one small, from the basin, and then poured the gravel particles in the basin: the big one is as big as two soybeans, and it has four or five carats. That grain is about 0.5 carats or so.

"These two diamonds are also diamonds, but the color looks very bad now. It is probably only industrial grade. I will use the instrument to check it later."

Industrial-grade diamonds, absolutely no one likes grayish-brown diamonds, and this type of diamond generally has a large amount of inclusions inside, which can only be used for industrial purposes.

If gem-grade rough diamonds account for 20% of a diamond mine, their value is at least 5 times that of 80% industrial-grade diamonds!

Tang Jichao chose at most one catty of gravel, and found three diamonds in it. This was definitely good news, and Zhang Nan couldn't help holding a basin and started doing it.

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