Energy industry

When they talk aboutenergy industry, most immediately imagine power lines, turbines and oil rigs. This is, of course, the core. But there is another, less noticeable side - the one that ensures the very existence of this infrastructure: the extraction of raw materials. Without coal, ore, non-metallic materials - no fuel, no metal for structures, no raw materials for production. And this is where my territory begins - mining equipment, the very foundation on which everything rests. Often this connection is overlooked, treating mining as a separate story. But in vain.

From scheme to mine: where theory meets reality

When working with equipment for ore and coal beneficiation, you are constantly faced with a gap between laboratory tests and quarry conditions. Here, for example, are magnetic separators. Everything in the catalog is beautiful: high recovery rate, minimal losses. But bring the same installation to the winter Urals, where the ore freezes, or to Siberia, where the humidity is off the charts, and the parameters will creep down. You have to look for solutions on the spot, together with local engineers: change the feed angle, adjust the field strength, sometimes even modify the casing design. This is not stated in any manual.

I remember one project to enrich iron ore concentrate. The customer complained about low productivity and frequent stoppages. We came and looked. It turned out that the problem was not in the separator itself, but in the system of preliminary classification of the material - the fraction was too heterogeneous. The separator simply could not work effectively with such a “cocktail”. I had to review the entire chain in front of him. It's a typical story: equipment is a link in a chain, and if the previous link is weak, don't expect perfect performance.

It is in such situations that the experience of the manufacturer is valuable, who does not just sell the unit, but understands the entire technological cycle. Here, for example,LONGI Corporation(official website -https://www.ljmagnet.ru). They have been in this field since 1993, and their profile is precisely the development and production of mining equipment. When a company has more than 30 years of experience and a staff of 1,200 people, most of whom are practicing engineers, this means that they have probably encountered hundreds of similar non-standard cases. Their plant in Fushun, with an area of ​​140,000 m2 and the production of 4,000 units of equipment per year, is not just production capacity, it is, in fact, a gigantic base for testing and finalizing solutions for real conditions.

Magnet is not a panacea: subtleties of separation

Magnetic separation seems simple: feed the material, the magnet attracts what is needed, the rest goes into the dump. In reality, there are dozens of variables. Magnetic field strength is just the beginning. The design of the drum, the material and configuration of the matrix, the rotation speed, and the method of removing the magnetic product are extremely important. Different ores - magnetite, hematite - require different approaches. Sometimes, to increase the extraction of fine classes, it is necessary to use a multi-stage scheme, which complicates and increases the cost of the process.

We had experience with the enrichment of an old man-made dump. There was little magnetite there, mostly weakly magnetic minerals. Standard separators gave a meager amount. Then we decided to try separators with a combined effect - magnetic and gravitational. The result was better, but the economics of the project were still on the brink. The project was canceled. This is an important lesson: even the most advanced technology is limited by the final cost of a ton of concentrate and the market price for it. Much is technically possible, but not everything is economically justified.

In this context, by the way, the evolution of companies like LONGI is visible. Initially, as I understand it, they focused on classic solutions. But to survive and grow in modernenergy industry, where requirements for efficiency and environmental friendliness are constantly growing, it is necessary to offer a complex. Not just a separator, but consultation on optimization of the entire technological chain at the customer’s site, selection of related equipment - feeders, conveyors, control systems. Their scale (the same 4,000 equipment per year) allows them to have a wide range of products and standard sizes, which is critical for flexible solutions to the problems of various, even small, enterprises.

People and metal: why automation doesn’t solve everything

Now it is fashionable to talk about “digitalization?” and “smart careers”. Of course, automated control and dispatch systems are the future. They allow you to monitor parameters in real time, predict wear, and optimize energy consumption. But in harsh mining conditions, the key link remains the person - the enrichment operator, the mechanic, the shift foreman. His experience and instinct are often more accurate than any sensor.

At one of the processing plants, a new system for automatically regulating the power supply to the separators was introduced. Logically, it should have stabilized the quality of the concentrate. But the system constantly “twitched”, issuing inadequate commands. While the programmers were racking their brains, a local foreman, who had worked there for 25 years, simply said: “Your input sensor is poorly positioned, vibration from the crusher is knocking it out?” And so it turned out. Expensive automation turned out to be a hostage to poor installation. This is to the question that any, even the most advanced equipment, is just a tool. Its effectiveness is 50% determined by competent integration into the existing process and the people who work with it.

Manufacturers who understand this rely not only on hardware, but also on training. A major player with a strong engineering school (like LONGI with its team, where more than 60% of the staff are highly qualified specialists) can afford not only to ship equipment, but also to carry out full commissioning, train customer personnel, and provide detailed procedures. This creates a long-term relationship and reduces risks for both parties. Ultimately, the reliability of an equipment supplier is as much a strategic asset for a mining enterprise as access to a deposit.

Efficiency vs. Reliability: an eternal compromise

In pursuit of high recovery and productivity, sometimes you unwittingly sacrifice reliability. The design becomes more complex, vulnerable components appear. I have seen imported separators with fantastic efficiency, which, however, required perfectly clean cooling oil and weekly maintenance by a certified engineer. At a remote field, this turned into a nightmare. The equipment stood idle for weeks waiting for a specialist.

Therefore, for Russian conditions, a simpler, even “rougher” one often wins. in appearance, but repairable and survivable equipment. The same magnetic system can be implemented in different ways. You can make it ultra-precise, with digital control of each electromagnet. Or you can use powerful permanent magnets with simple mechanical adjustment. The second option may be 5-7% less efficient under ideal conditions, but it will work for years in dust and cold, and can be repaired by a local mechanic with a set of standard keys. This choice is always a compromise, and it depends on the specific operating conditions and service availability.

Here again the localization of production and service comes to the fore. If the manufacturing plant, its engineering center and spare parts warehouses are relatively accessible (say, in Fushun for the CIS and Asian markets), this changes things dramatically. Delivery times for spare parts are reduced, logistics costs are reduced, and it is easier to organize a specialist visit. For a continuous cycle of operation of a mining enterprise supplying raw materialsenergy industry, such reliability of the supply chain and support is often more important than a small premium in technological indicators.

Looking forward: what will be the foundation of tomorrow?

The demand for energy will only grow, which means that the demand for raw materials for its production will also grow. But pressure towards sustainability and resource efficiency is also increasing. This means that mining and enrichment equipment must become not just more powerful, but smarter and “cleaner”. We are talking about reducing specific energy consumption, closed water supply systems in factories, and maximizing the extraction of useful components from ore in order to reduce the volume of dumps.

There is already a demand for solutions for processing low-grade and difficult-to-process ores, and for working with man-made dumps of past years. These are complex, non-standard tasks. Only manufacturers with serious scientific and technical groundwork and experience can cope with them. It is the ability not to churn out standard solutions, but to adapt and develop technologies for new challenges that will determine leaders in this area.

So when we talk aboutenergy industry, it is worth remembering that its sustainability does not begin at the power plant, but deep in the quarry or mine. A lot depends on how efficiently and reliably the equipment operates there. And in this not the most noticeable, but critically important segment, their own, very specific and mundane work continues: engineers draw diagrams, separator drums are welded in factories, and adjusters in the field in the rain or snow check the gaps so that the next ton of coal or ore is mined and prepared a little better than yesterday. That's the point.