Chapter 646 The lion opens its mouth

The latest website: The recovery rate refers to the percentage of the actual mined ore volume and the designed ore volume. The size of this number is inversely proportional to the loss in mining, that is to say, the smaller the recovery rate number, the greater the loss in the mining process.

The recovery rate is 90%, which means that for every 90 tons of minerals collected, 10 tons are lost. A recovery rate of 50% means that 50 tons are produced and 50 tons are wasted, while a recovery rate of 10% means that if 10 tons of minerals are produced, 90 tons will be thrown underground.

There are two main types of losses in the mining process, one is production loss and the other is design loss.

Taking coal mining as an example, in the process of coal mining, even in open pit coal mines, some waste rock will inevitably be mixed, and the possibility of mixing waste rock in the mine is even greater, which will cause production losses.

In addition, in the process of coal mining, there will inevitably be a lot of coal that has not been collapsed by the equipment, as well as spillage losses during transportation, etc. These are also production losses.

Design losses, including in the mine design, must leave certain security pillars to ensure that the mine will not collapse. Naturally, these pillars cannot be collected.

In addition, some coal seams are not suitable for mining to avoid accidents such as water penetration, which also belong to the design loss of coal mines.

These mining losses are reflected in the recovery rate.

Everyone knows that open-pit mining is the most cost-effective, not only because of the low construction difficulty of open-pit mining, but also because of the high recovery rate of open-pit mining. Under normal circumstances, the recovery rate of open-pit mining is above 95%. That is, the waste of coal reserves will not exceed 5%.

The recovery rate of underground coal is definitely much lower.

European coal mining technology is developed, so the recovery rate of low coal mines is between 75% and 80%.

In the United States and Australia, open-pit coal mines are the main ones, and underground coal mines account for a small proportion, and all of them use European technologies.

The recovery rate of large state-owned coal mines in China can also reach the level of 75%, which may be slightly lower than that of European and American countries, but the level is also very close.

Large state-owned coal mines have funds to purchase equipment and sufficient technical personnel.

When China was still a net exporter of coal, exporting coal was an important source of foreign exchange, and those who could export coal were naturally large state-owned coal enterprises, so they also had foreign exchange to buy more advanced mining equipment from abroad.

As for talent,

At that time, those large state-owned coal mines had enough coal mining colleges, and the various mining universities in the country also continuously provided talents for large state-owned coal mines.

Therefore, only large state-owned coal mines have the same mining efficiency as developed countries in Europe and the United States. This is also the reason. When the price of coal mines falls, other coal mines are operating at a loss, while the days of large state-owned coal mines are passable.

Other coal mines do not have the technology and talents of large state-owned coal mines. Small coal mines are reluctant to spend money on coal mining machinery, and they are not willing to spend money on technical personnel. Naturally, the efficiency of coal mining is very poor.

The smaller the coal mine is, the worse the coal mining technology is. Many small coal mines in village collectives still use primitive artificial coal mining.

The efficiency of manual coal mining is low, and the recovery rate is also very low. For small coal mines run by villages or privately contracted, the recovery rate is only 10% to 15%. 85 to 90 tons of coal have to be thrown down the well.

In fact, most of the small coal mines are located in coal seams that are not suitable for mining at all. If mining is forced, only one ton can be collected, and nine tons will be lost, which will not only generate a lot of waste, but also destroy the entire area. ecological resources.

Therefore, the state will take action to rectify and shut down all small coal mines.

Today, the mining area where Li Weidong is located, although the scale is barely large enough to be medium-sized, was originally a coal mine contracted by individuals, and neither the equipment nor the technology is good, so the recovery rate is only 20% to 25%.

This also means that if 20 to 25 tons of coal are mined, 75 to 80 tons of coal will be wasted. If you count it like this, you are really throwing money every second.

Li Weidong estimated in his mind that with the scale of this coal mine, if the equipment and technology are invested, the recovery rate of 60% to 70% can be achieved. This also means that the coal production can be tripled!

These are all money!

Thinking of this, Li Weidong said: We have to find a way to increase the recovery rate. Should the equipment be further strengthened?

Lao Zhang nodded immediately: The equipment used in the mine now is the equipment that I updated when I contracted it before.

When you contracted, it was seven or eight years, right? It's impossible for the equipment to age and become outdated so quickly? You can still drive a car for more than ten years! Zhao Jinshan said.

Lao Zhang smiled embarrassedly: Mr. Zhao, when I bought equipment, I actually bought equipment that was eliminated from other mines.

Second-hand equipment! No wonder. Zhao Jinshan nodded suddenly.

But Lao Zhang stretched out four fingers: When I got here, I already have four hands.

Zhao Jinshan suddenly had a speechless expression.

Li Weidong said with a smile; Four-handed equipment is always much better than manpower mining.

Yes, that's what I thought at the time. Lao Zhang replied honestly.

It seems that a batch of new equipment needs to be replaced. Zhao Jinshan sighed helplessly, and then said: For a coal mine like ours, it will cost a lot of money to replace the equipment. It seems that this year's profits will all be reinvested. already.

Without investment, there will be no profit! Besides, new equipment can improve the efficiency of coal production, and we will make more money. Li Weidong paused, then said: In addition to new equipment, the most important thing is It’s good to recruit some technical talents to layout and design the mine.”

In order to improve the recovery rate of coal, in addition to the use of advanced equipment, technical improvement is also the main means.

The most direct method is to optimize the layout in the mine, such as the layout of transport lanes, the layout of return air lanes, the layout of permanent coal pillars, etc. A more reasonable layout can reduce the occupied recoverable reserves and naturally Improve recovery rate.

In addition, the size design is also very important. By increasing the geometric size of the working face, more coal can naturally be mined. Sometimes, a coal pillar can be saved, and a large piece of coal can be dug out. .

The situation of each coal mine is the same. Different coal seam thicknesses and different geological conditions must be different in layout and design, so these are all technical problems, and ordinary coal miners must not understand, and need professional technicians to do the work.

In addition, underground operations also involve many safety issues. How to strive for a maximum balance between safety and profit is a test for technicians.

However, this kind of technical personnel must be concentrated in large state-owned coal mines, ordinary small coal mines, how can there be any decent technical personnel!

Therefore, small coal mines can only be mined blindly, without planning, exploration, or overall design. Basically, it counts where to dig, and which side is good for digging, which can easily lead to safety accidents.

Li Weidong said that he was recruiting technicians, and Lao Zhang's face suddenly showed embarrassment.

Why, is this difficult? Li Weidong asked.

It's a little difficult. This coal digger is easy to find, but professional technicians are not easy to recruit! Lao Zhang said.

Zhao Jinshan snorted coldly: I'm giving money, but I'm afraid I won't be able to recruit people!

The main technical personnel in this area are concentrated in large state-owned coal mines. I am afraid that people are not willing to come to our small mines! Lao Zhang said.

Then spend more money. Even the technicians of large state-owned coal mines want to live a better life, and there must be some who want to make more money. Zhao Jinshan said.

Lao Zhang replied: Mr. Zhao, if you hire someone specially, you will have to spend a lot of money. With the scale of our mine, it's not worth the loss.

Zhao Jinshan was stunned for a moment. Judging from Lao Zhang's answer, it seemed that things were not as simple as he thought.

Li Weidong, who was next to him, already understood what Lao Zhang meant, and he explained: General coal technicians are easier to find, but when it comes to mine design, a more professional team is needed.

The scheme of mine design involves many technologies and parameters. Each parameter will have an impact on the construction of the mine and the work of the coal tea year in the future, and the design may be changed at any time during the construction and mining process.

Talents of this type either teach in universities or do research in design institutes. In addition, they are the teams cultivated by the large coal enterprises. This kind of team may have been cultivated by others for decades. We may not be able to dig the lifeblood of others.

Zhao Jinshan pondered for a moment, and then asked, We also have many mines in Dongshan Mining, as well as two large mines, Taifeng and Taisheng. Shouldn't there be a team like this?

Li Weidong nodded: Of course we need a mine design team, but cultivating such a team requires time and talent.

Time can only be accumulated slowly. As for talents, graduates from domestic mining universities should give priority to large state-owned coal mines. I am afraid that private coal mines like us can only find some others to pick the rest.

How about hiring some retired engineers from large state-owned coal mines? It should be easier! Zhao Jinshan said.

Li Weidong thought about it for a while and replied, It's a good idea. Coal workers and gay men can apply for retirement at the age of 55. At this age, they are considered prime years, and if they are strong, they can work for another ten years.

That's fine, I'll go ask if there are experts in this area, let's give some more money and try to find a few. Zhao Jinshan replied.

...

At the beginning of the 21st century, what China lacked most was high-end talents.

Since the reform and opening up, many international students have left the country, but most of them have stayed abroad. At that time, returnees were still scarce animals.

The reason why many people become returnees is either to return to China to start a business, or to return to China as executives of foreign companies in China.

Therefore, it is not an easy task for private enterprises to recruit high-end talents. Companies like Huawei that began to recruit highly educated talents on a large scale in the 1990s were even rarer at the time.

In addition to entering the system, most of the highly educated talents who graduated from domestic colleges and universities are absorbed by foreign-funded enterprises or state-owned enterprises.

At that time, foreign investors had good benefits and high salary, and it was naturally the first choice for highly educated talents. The benefits of state-owned enterprises are also good, and they are more stable, and they are also very popular with highly educated talents.

As for private enterprises, unless it is given several times the salary, it is difficult for highly educated talents to join.

Especially in the coal industry, which is a traditional industry, professionals are basically monopolized by state-owned coal enterprises.

Basically, all large state-owned coal mines have special coal schools, and the trained technicians will definitely be assigned to their own coal mines first.

Various coal mining universities also have inseparable ties with major state-owned coal enterprises, such as China University of Mining and Technology, which was originally under the jurisdiction of the Ministry of Coal Industry, but was later revoked by the Ministry of Coal Industry and placed under the management of the Coal Industry Bureau.

The major state-owned coal enterprises are also managed by the Coal Industry Bureau, so the graduates of the University of Mining and Technology must be selected first by the large state-owned coal enterprises. Among them, outstanding talents have already been reserved by those large enterprises before they graduate. turn to private enterprises.

Therefore, based on Zhao Jinshan's personal connections, he searched for more than a month, but he couldn't find a suitable talent.

Many of the professors in the university or the researchers in the Coal Design Institute are experts in the industry. It is okay to ask them to do technical support occasionally, but they are not willing to do it for a long time in a private enterprise.

As for the technical team of the state-owned coal company, even if Zhao Jinshan wanted to poach people, it was not convenient for him to do so. What's more, those who have worked in state-owned enterprises for a long time, basically have the whole family there, and the interpersonal relationships are also there, and they may not be willing to change jobs.

...

During the dinner, UU Reading www.uukanshu.com Zhao Jinshan's face was very gloomy, he picked up the wine glass, took a sip of wine, and then said, Brother Li, I'm afraid the matter of the technical team you mentioned last time will be It's yellow!

Li Weidong's eyes widened in surprise: Can't even you find a suitable person? That means that there is really no such talent in China.

Actually there are still some, but the other party's asking price is too high. Zhao Jinshan sighed and continued: There is Huiyuan Industrial Investment Group, they have a professional team willing to use it for us, and they are also willing to provide other technical support.

Huiyuan Industry? Li Weidong was surprised. In his impression, this is the top 150 large group among the top 500 Chinese enterprises in the future.

Seeing Zhao Jinshan sighing and sighing, Li Weidong asked, Then their conditions should not be low, right?

Zhao Jinshan nodded: Huiyuan Industry wants 30% of our shares!

Li Weidong frowned slightly: The 30% stake is really a lion's mouth!