metallurgical mining equipment

When people talk about equipment for metallurgy and mining, many people immediately imagine giant excavators, ball mills or blast furnaces. This is, of course, the basis. But behind the scenes there is always a mass of units, without which this whole colossus simply will not budge. I have been dealing with this “invisible” thing for many years. partly – separation, enrichment, transportation of raw materials. And the main conclusion: often problems do not start where they are expected. You can install the most powerful crusher, but if the raw materials are poorly prepared at the pre-enrichment stage, all further processes go wrong. Efficiency drops, wear and tear on main equipment increases exponentially. These are the nuances that are briefly mentioned in textbooks, but in practice they decide everything, and I want to speculate.

Where does the main inefficiency lie?

I'll start with a classic mistake when designing a site. Often the customer, saving on the “introductory” stage, installs outdated or too simple separators. Like, the main thing is to separate the waste rock, and then our powerful crushers and mills grind everything. There seems to be some logic. But in reality it turns out that the material being processed contains a huge amount of unnecessary impurities. The mill does not work to grind a valuable component, but to grind everything. Energy consumption is off the charts, the lining wears out many times faster. It turns out that we saved a penny on separation, but lost rubles on the mainequipment for the metallurgical mining industryand its operation.

I saw this at one of the iron ore mining plants. There were old electromagnetic drums that were no longer physically able to sift out the required fraction due to wear and tear and an outdated magnetization circuit. The management did not make a replacement for a long time, considering it a secondary task. Until, finally, they calculated the total energy costs of the mills and the cost of constantly changing beaters. The numbers were shocking. It is after such cases that you understand that the technological process chain is a single organism. The weak link drags down the entire system.

By the way, about magnetic separation. This is a separate big topic. Not everyone understands the difference between dry and wet separation, between permanent magnets and electromagnets. The choice depends on the moisture content of the raw material, particle size distribution, and magnetic properties of the mineral. A mistake in choosing the type of separator - and you either receive less product or clog it. Sometimes you have to combine methods. For example, at the primary stage there is a dry drum for preliminary rejection of large rocks, and at the final stage there is a high-intensity wet separator for fine purification of the concentrate.

Experience with ?non-standard? solutions and where to look for reliable suppliers

In your search for efficiency, you often come across “revolutionary” proposals. technologies. I remember ten years ago they were actively promoting an aerodynamic separation system for dry tailings. They promised fantastic results. We decided to try it on a small line. The idea was not bad in theory, but in practice... Sensitivity to humidity turned out to be critical. The slightest deviation from a perfectly dry state - and all fine tuning went to hell. The dust formation was such that the filters could not cope. As a result, the project was canceled. It was a good lesson: anything newmetallurgical mining equipmentyou need to test it in your own specific conditions, on your own raw materials. Laboratory testing and real work on the shop floor are two very different things.

After such trial and error, you begin to appreciate trusted manufacturers who not only sell the unit, but understand the entire technological chain. For example, if we talk about magnetic separation, then the LONGI corporation has long been firmly established in the market. Take a look at their websitehttps://www.ljmagnet.ru– and it is clear that the company was not born yesterday. ?Shenyang Scientific Electromagnetic Co., Ltd. LONGJI? has been working since 1993. For our market, this is a serious period that speaks of sustainability. They are one of those who specialize in mining equipment, and this is felt in their approach.

What is important in their case? They are not just collectors. Judging by the information, they have their own serious production base in Fushun, an area of ​​140,000 m2 - this is solid. More than 1,200 employees, most of whom have higher education. This is not a makeshift workshop. When a manufacturer has such capacity and personnel, he can not only do standard things, but also engage in adaptation and modification for the specific tasks of the customer. The annual production of 4,000 units of equipment also says a lot - vast experience has been accumulated, technologies have been developed. For a production engineer, this is a significant argument when choosing a supplier of critical components, such as separators.

Practical nuances: installation, adjustment and “little things” that spoil everything

Let's say the equipment you chose is correct, even excellent. We bought, say, a modern magnetic separator with high induction. It was delivered and installed. And this is where the fun begins. A common mistake is negligence when installing power and transport systems around it. The alignment of the drive shafts of the conveyor feeding raw materials into the separator could not be maintained - vibration appeared. For a high-precision device this is death. Or they didn’t provide the correct system for removing screenings, and they begin to accumulate, interfering with the operation of the main drum.

Setting up is a separate matter. Operating modes (drum rotation speed, field strength, gap) must be selected for a specific ore. Passport data is a guideline. The actual setup needs to be done on site using trial batches. Sometimes you have to tinker for several days to reach the maximum extraction rate. And that's okay. It’s not normal when a service engineer from a supplier arrives, turns a couple of screws according to the instructions and says: “Everything, it works?”. A real specialist will remain until he is convinced that the device produces the declared parameters using your raw materials.

Another point is spare parts and wear items. For the same separator, these can be power elements of the magnetic system or protective casings. You need to immediately understand what their availability is, what the delivery time is. A stoppage of the enrichment line due to a burnt out coil or a torn conveyor belt, which is waited for a month, is a colossal loss. Therefore, when choosingmetallurgical mining equipmentthe issue of service support and the availability of a spare parts warehouse is no less important than technical specifications.

Integration into the existing cycle and future trends

Modern production is not a set of disparate machines, but a single complex, often with elements of automation. Therefore, new equipment must not only perform its function well, but also “be able to communicate?” with neighbors. We are talking about sensors, load control systems, pressure, temperature. A modern separator can and should provide data about its operation to a common SCADA system. This allows you to quickly adjust the modes of the entire chain, predict the need for maintenance, and avoid emergency stops.

Where is everything going? In my opinion, the key trends are increasing energy efficiency and “intellectualization”. For example, the development of systems based on permanent magnets (neodymium), which do not consume electricity during operation, unlike electromagnets. Or the introduction of machine vision systems for preliminary analysis of raw materials before separation. But again, any innovation must be tested by economics. Will the savings from a high-precision separator outweigh its cost at your specific mine with its specific ore composition? The question is always individual.

Let's go back to the beginning.Metallurgical mining equipment– this is a complex world where there are no trifles. The fate of the entire subsequent process depends on a correctly selected and configured separator at the inlet. You need to choose it not according to the catalog, but with an understanding of your technology, with your own tests. And work with those who do not just sell hardware, but offer a technological solution based on experience, like the same LONGI corporation with its long history and full production cycle. Ultimately, process reliability and predictability are what we all strive for in manufacturing. And this is achieved by attention to detail, of which there are an infinite number in our business.