novelno Chapter 646: The Lion Opens His Mouth
Chapter 646: The Lion Opens His Mouth
The genius remembers the address of this site in one second: []
/ Fastest update! none!
The recovery rate refers to the percentage of the actual mining ore volume and the design 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.
A recovery rate of 90 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.
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.
Take coal mining as an example. During the coal mining process, even in open-pit coal mines, some waste rocks will inevitably be mixed in. The possibility of waste rocks being mixed in the mine is even greater, which will cause production losses.
In addition, during the coal mining process, there will inevitably be a lot of coal that has not been collapsed by the equipment, as well as spilled losses during transportation, etc. These are also production losses.
Design loss, including mine design, must leave certain security pillars to ensure that the mine will not collapse, and these pillars cannot be collected naturally.
In addition, some coal seams are not suitable for mining,
In order to avoid accidents such as water seepage, this also belongs 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,
It is because of the high recovery rate of open-pit mining,
In general, 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 must be much lower.
European coal mining technology is developed, so the recovery rate of low coal mines is between 75 and 80.
The United States and Australia are dominated by open-pit coal mines, with a small proportion of underground coal mines, and all of them use European technology.
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 the funds to purchase equipment and sufficient technical personnel.
When China was a net exporter of coal, coal export was an important source of foreign exchange, and those that could export coal were naturally large state-owned coal enterprises, so they also had foreign exchange to purchase more advanced mining equipment from abroad.
As for talents, those large state-owned coal mines at that time were enough for their own coal mining colleges, and all the mining universities in the country,
It also continuously provides talents for large state-owned coal mines.
Therefore, large state-owned coal mines can have the same mining efficiency as developed countries in Europe and America.
It is also for this reason that when the price of coal mines falls, other coal mines are operating at a loss, while the large state-owned coal mines are getting by.
Other coal mines do not have the technology and talents of large state-owned coal mines. Small coal mines are not willing to spend money to buy coal mining machinery, nor are they willing to spend money to hire 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 manual coal mining.
The efficiency of manual coal mining is low, and the recovery rate is also very low. The recovery rate of small coal mines run by villages or contracted by individuals is only 10 to 15, that is to say, for every 10 to 15 tons of coal mined, there are Between 85 and 90 tons of coal were dumped underground.
In fact, most of the small coal mines are located in coal seams that are not suitable for mining at all. If they are forced to mine, they can only collect one ton, and throwing away nine tons will not only generate a lot of waste, but will also damage the entire area. ecological resources.
That's why the country took action to rectify and shut down all small coal mines.
Although the mining area where Li Weidong is located is barely medium-sized, it was originally a coal mine contracted by individuals.
Neither the equipment nor the technology will work, so there is only a recovery rate of 20 to 25.
This also means that mining 20 to 25 tons of coal will waste 75 to 80 tons of coal. In this way, it is really throwing money every second.
Li Weidong estimated in his mind that with the scale of this coal mine, if he invests in equipment and technology, the recovery rate can reach 60 to 70%. This also means that the coal production can be increased by three times!
These are all money!
Thinking of this, Li Weidong said; We have to find a way to increase the recovery rate. The equipment should be improved, right?
Lao Zhang nodded immediately: The equipment used in the mine now is the equipment that was updated when I was contracted before.
When you contracted, it was seven or eight years, right? It's impossible for the equipment to become obsolete so quickly, right? You can buy a car and drive it 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 suddenly realized and nodded.
But Lao Zhang stretched out four fingers: When I come here, it is already a four-handed device.
Zhao Jinshan suddenly looked speechless.
Li Weidong said with a smile; four-handed equipment is much better than manual mining.
Yes, I thought so too 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 all the profits this year will be reinvested in it. gone.
Without investment, there is no profit! Besides, new equipment can improve the efficiency of coal production, and we can earn more money. Li Weidong paused, and then said: In addition to new equipment, the most important It’s good to recruit some technical talents to carry out the layout and design of the mine.”
In order to improve the recovery rate of coal, in addition to using advanced equipment, technical improvement is also the main means.
The most direct way is to optimize the layout of the mine, such as the layout of the transportation lane, the layout of the air return lane, the layout of the permanent coal pillar, etc. A more reasonable layout can reduce the occupied recoverable reserves, and naturally Improve recovery rate.
In addition, the design of the size is also very important. Increasing the geometric size of the working surface can naturally excavate more coal. Sometimes a coal pillar can be saved, and a large area of coal can be dug out. .
The situation of every coal mine is the same, different coal seam thickness, different geological conditions, the layout and design must be different, so these are technical issues, ordinary coal mining workers must not understand, need professional technicians to do the job.
Moreover, underground operations also involve many safety issues. How to maximize the 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 mine blindly, without planning, exploration, and overall design. Basically, they are digging wherever they go, and which side is easy to dig. It is easy to cause 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 bit difficult. It's easy to find coal diggers, but it's hard to recruit professional technicians! Lao Zhang said.
Zhao Jinshan snorted coldly: If I give money, I'm afraid I won't be able to recruit anyone!
The main reason is that the technicians in this area are concentrated in the large state-owned coal mines. I'm afraid people are unwilling to come to small mines of our level! Lao Zhang said.
Then spend more money. Even technicians in 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, it will cost a lot of money to hire someone specially. Given the scale of our mine, the gain outweighs the gain.
Zhao Jinshan was taken aback for a moment. Judging from Lao Zhang's answer, it seemed that things were not as simple as he imagined.
Li Weidong, who was next to him, already understood what Lao Zhang meant, and he explained; General coal technicians are relatively easy to find, but when it comes to mine design, a more professional team is needed.
The mine design plan involves many technologies and parameters, and each parameter will have an impact on the future mine construction and coal production work, and the design may be changed at any time during the construction and mining process.
This type of talent is either teaching in a university or doing research in a design institute. In addition, it is the team 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 out their lifeblood.
Zhao Jinshan pondered for a moment, and asked, Our Dongshan Mining Industry also has quite a few mines, as well as the two big mines Taifeng and Taisheng. Should we also have such a team?
Li Weidong nodded: Of course we need a mine design team, but to cultivate such a team, first, it takes time, and second, it needs talents.
Time can only accumulate 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 ours can only find some others to pick up the rest.
What if we hired some retired engineers from large state-owned coal mines? It should be easier! Zhao Jinshan said.
Li Weidong thought for a while, and then answered: This is a good idea. As a coal company employee, gay men can apply for retirement at the age of 55. This age is considered a prime age, and if you are in good health, you will have no problem working for another ten years.
That's okay, I'll go and find out if there are any experts in this field, let's pay more and try to find some. Zhao Jinshan replied.
At the beginning of the 21st century, what China lacked the most was high-end talents.
Since the reform and opening up, many international students have gone abroad, but most of them stayed abroad. At that time, returnees were still rare animals.
The reason why many people become returnees is either to return to China to start a business, or to return to China as an executive of a foreign company stationed in China.
Therefore, it is not easy for private enterprises to recruit high-end talents. There were very few companies like Huawei that began to recruit highly educated talents on a large scale in the 1990s.
Most of the highly educated talents who graduated from domestic colleges and universities were absorbed by foreign-funded enterprises or state-owned enterprises, except those who entered the system.
At that time, the benefits of foreign capital were good and the treatment was high, and it was said that Bel had face, so it was naturally the first choice for highly educated talents. The benefits of state-owned enterprises are also good, and the advantage is stable, and they are also very popular with highly educated talents.
As for private enterprises, unless they are paid several times the salary, it is difficult to attract highly educated talents to join them.
Especially in the coal industry, which belongs to the traditional industry, professional talents are basically monopolized by state-owned coal enterprises.
Basically, all large state-owned coal mines have special coal schools, and the technicians trained will definitely be given priority to their own coal mines.
Various coal mining universities are also inseparable from major state-owned coal enterprises. For example, China University of Mining and Technology was originally under the jurisdiction of the Ministry of Coal Industry.
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 state-owned large coal enterprises. Among them, outstanding talents have already been booked by those large enterprises before graduation. It is the turn of private enterprises.
So with Zhao Jinshan's 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 technology once in a while, but they are not willing to do it if they are asked to work in private enterprises for a long time.
As for the technical team of the state-owned coal enterprise, even if Zhao Jinshan wants to poach people, it is not convenient to do so. What's more, those who have worked in state-owned enterprises for a long time basically have their families and relationships there, so they may not be willing to change jobs.
At the dinner, Zhao Jinshan looked very gloomy. He picked up the wine glass, took a sip of the mulled wine, and then said, Brother Li, the technical team matter you mentioned last time is probably going to be dirty!
Li Weidong opened his eyes wide in surprise: Even you can't find a suitable person? That means that there are really no talents in this field in China.
In fact, there are still some, but the other party's asking price is too high. Zhao Jinshan sighed, and then said: There is Huiyuan Industrial Investment Group, and they have a professional team willing to use it for us, and they are willing to provide other techniques.
Huiyuan Industry? Li Weidong was startled. In his impression, this is the top 150 large group among the top 500 Chinese enterprises in the future.
Seeing Zhao Jinshan sigh and sigh, Li Weidong asked: Then their conditions should not be low?
Zhao Jinshan nodded: Huiyuan Industrial wants 30% of our shares!
Li Weidong frowned slightly: 30 shares, what a lion!
No pop-up window, timely update!