Through the structural optimization design of the vertical roller mills on both sides of the mine ore bin, the problem of uneven wear and serious wear of the vertical roller mill has been completely solved, and the service life of the optimized vertical roller mill is extended from 6 months to 24 months.

The project has achieved good results, solved the problem of the short service life of the vertical roller mill, reduced the frequency of maintenance and repair of the heavy apron feeder, reduced the labor pressure of the maintenance personnel, and improved the operating efficiency of the equipment and the stability of the production system.

SBM, 35 Years of mining equipment manufacturing, provides types of ore feeders around the world (apron feeder, vibrating feeder, chute feeder, disk feeder, etc).

We are here help to help mining machine selection, mineral processing solutions, processing plant optimization.

The post operators must obey the marked operation procedures specified in mill's start-up and shutdown procedures.

Before starting, it is necessary to carefully check whether there is ore or foreign matter in the crushing chamber; Before start-up in winter, use electric heater to heat the oil to 15 ℃ before start-up, and the oil level is between the upper and lower limits;

Start the oil pump, wait until the oil pressure is stable at 0.07-0.13mpa, and the lubricating oil in the oil return pipeline returns to the oil tank, then start ultrafine vertical mill, and start feeding after no-load operation for 10min.

The working environment of ultrafine vertical mill is bad, so it is hard to avoid some failures. These faults not only affect the normal performance of mill efficiency, but also greatly reduce the service life of mill parts and lubricants, and increase the consumption of spare parts and materials, which increases the labor intensity of maintenance and production. Therefore, the reasonable handling of these faults can ensure the stable operation of ultra vertical mill and improve the production efficiency.

Big and small bevel gears are worn and broken

reason:

1) The normal meshing condition of bevel gear is destroyed

2) Rigid connection transmission

3) Too much iron or being bitten by large pieces

Ultrafine vertical mill is to use high-speed air to accelerate the particle production speed and collide with the target to crush the material. Its advantage is that the crushed material does not produce pollution. 

Because the compressed high-speed air velocity decreases after crushing, the volume increase belongs to the heat absorption process, and has cooling effect on the material, so it is particularly suitable for ultra-fine grinding of heat sensitive materials.

However, one of the disadvantages of ultrafine vertical mill is the high energy consumption. Therefore, how to reduce energy consumption and improve production efficiency is one of the difficulties in air flow pulverization.

Development of multifunctional ultrafine vertical mill and surface modification equipment. For example, the combination of ultrafine vertical mill and drying, ultrafine vertical mill and surface modification, mechanochemical principle and ultrafine vertical mill technology can expand the application scope of ultrafine vertical mill technology. Some new materials with unique properties can be prepared by means of surface coating and solid-state mutual solubility.

Research and development of ultrafine grinding technology related to particle size detection and control technology. The particle size detection and control technology of ultrafine vertical mill is one of the important conditions to realize the industrial and continuous production of superfine powder. The control technology of particle size measurement instrument and measurement is closely related to the ultrafine vertical mill technology, so we must work with experts in these fields to tackle key problems.

In order to reduce the energy consumption of air flow and improve the production efficiency of LM vertical roller mill, we must first understand the reasons.

Generally speaking, the forms of solid particles accelerated by high-speed airflow are mainly composed of the following three methods:

Airflow particle acceleration nozzle: the airflow and particles are fully mixed and then accelerated by the nozzle, which can make the particles obtain a very high speed (almost the same as the airflow speed), but the material has serious wear on the inner wall of the nozzle, so it is rarely used in practice.

Syringe accelerating particles: high speed (supersonic) airflow and particles are mixed and accelerated in the mixing tube, and the particles get higher speed, but the material has serious wear on the mixing tube.

Free air acceleration particles: particles enter the high-speed air beam as a free falling body to be accelerated. At this time, there is only high-speed air flow through the nozzle, and the wear is very small. However, due to the low falling velocity (transverse) of particles, it is difficult to get into the center of the air beam (high-speed air flow) and obtain high velocity.

The further study on the mechanism of the influence of the speed rate and filling rate on the product size can provide a reference for the ultrafine vertical mill to propose a more reasonable grinding process, thus greatly improving the efficiency of the ultrafine vertical mill.

The research on the optimization of ultrafine vertical mill parameters mainly adopts numerical simulation and experiment. The grinding mechanism of ultrafine vertical mill is complex, and it is difficult to describe by analytical model. The discrete element method provides a means for the research of grinding mechanism of ultrafine vertical mill. Discrete element method is a suitable method

The numerical method of the mechanical behavior of discontinuous body is studied.

Large scale and diversified equipment has become the mainstream equipment in the current market. Compared with fixed crushing equipment, ultrafine vertical mill is more automatic and intelligent, and has more advantages in handling materials.

The advantage of ultrafine vertical mill is that it can move flexibly and directly enter the site for crushing work, leaving a large amount of money for the owner, This is also the reason why many consumers choose ultra vertical mill, especially the most used construction waste is broken, and the construction waste is not concentrated.

Using ultra vertical mill can solve this problem, realize the use of construction waste recycling equipment, make the construction waste into sand and brick, and truly turn waste into treasure.

SBM is a professional manufacturer supplying all kinds of powder grinding mills. Among the products, ultrafine vertical mill is also an important equipment in powder production line. And, Air Conveyor System Will be The Trend of Powder Industry, let me tell you why.

1 High-pressure, high-density, low-pressure feed system of ultrafine vertical mill

Low-grade high-pressure, high-density, low-speed ultrafine vertical mill (dense phase conveying) has been used for 40 years in mixed material overseas. It not only solves the problem of classification, but also solves the problem of pollution and product material, which other forms of transport can not do.

And ultrafine vertical mill has clear advantages in dust control, conveying distance and flexible trend of pipeline. Promotion of high-density plug flow method ultrafine vertical mill technology is the future trend of development.