November 27, 2019 by zzgl5656
Mobile crusher is a necessary equipment for every concentrator. It mainly undertakes the crushing of materials to meet the granularity requirement of downward sequence process. At present, there are many kinds of mobile crushers in our country, but the common disadvantage is that the energy consumption is larger. Nowadays, the society increasingly advocates energy saving and consumption reduction, and energy saving ball mills are more widely used.
Because mobile crusher is a kind of grinding equipment which operates continuously every day, there will be large and small faults in the round-the-clock operation, so the daily maintenance of energy-saving ball mill is very important, which directly affects the working efficiency and service life of the ball mill.
Let's take a look at some of the important things we need to pay attention to:
Lubricating oil should be discharged completely after one month of use of mobile crusher, and new oil should be thoroughly cleaned and replaced. In daily operation, it is necessary to check the lubricant condition and oil surface height at each lubrication point every four hours. In addition, the oil temperature of the main bearing lubricant should be controlled below 55 degrees Celsius.
November 26, 2019 by zzgl5656
According to the fineness of limestone, the fineness requirement of limestone products and the size of the output produced by the users, according to the demand of limestone chemical industry, SBM mining machine (laurel) introduces a series of grinding machines, such as Raymond mill, high pressure roller mill, GUI plate mill, super fine powder machine, etc.
They are used in the milling of barite, calcite, potassium feldspar, talc, marble, limestone, white ash, granite, basalt, ceramics, glass, coal, slag, fly ash, etc. The fineness of their finished product is adjustable within the 20-3250 range. A new type of pulverizer is introduced for the processing of 80-400 large industrial fine powder.
They are used in the coal preparation system, blast furnace coal injection system, slag (steel slag, water slag, slag, fly ash) processing, cement clinker, cement raw meal (limestone) and so on. They are widely used in mining, electric power, chemical industry, building materials, metallurgical, refractories, desulphurization of power plants, asphalt mixing stations, highways and other industries.
November 25, 2019 by zzgl5656
The structure of vertical roller mill
The structure of vertical roller mill is various, but its principle is basically similar. The roller press is mainly composed of feeding device, material position control device, a pair of sticks, rotating device (motor, pulley, gear shaft), hydraulic system, and horizontal leakage prevention device.
The working principle
The material enters into the pressure zone between two rollers rotating in phase, under the action of friction of roller pressure surface and gravity of material column. As the roll seam becomes smaller and smaller, the pressure on the material layer becomes greater and greater. Finally, the material is pressed into the material cake and falls down between the two rolls.
November 22, 2019 by zzgl5656
The desulfurized gypsum slag can be made into building gypsum powder after treated by ultrafine mill. In the past, desulphurization gypsum residue was disposed by landfill, seriously polluting the environment and occupying cultivated land. Now the gypsum powder produced by the ultrafine mill is superior to natural gypsum, which is a good raw material for making plasterboard and turning waste into treasure.
ultrafine mill is used for crushing and drying soft and non abrasive materials, such as gypsum, chalk, clay, slurry filter cake, etc. It can also scatter, dry and calcined gypsum and flue gas desulphurization gypsum. The drying ultrafine mill has the advantages of high production efficiency and low energy consumption, and has the function of scattering and crushing at the same time of drying.
The rotary rotor of the drying ultrafine mill dissolves the material, and the hot air dries the material. The airflow carries the broken and dried material to the separation chamber. The fine powder is then separated into the cyclone, and the coarse particles are returned to the ultrafine mill to break again.
November 20, 2019 by zzgl5656
Compared with other crushers, sand washer can be moved at any time, more convenient to use. Sand washing machines can be equipped with different crushers to form a production line. It is suitable for soft or medium hard and extremely hard materials crushing, sand washer is widely used in large, smelting, building materials, roads, railways, water conservancy and chemical industry and many other departments.
Next, let's share with me the benefits of choosing SBM Mining Machinery to move the crusher. Sand washing machine of SBM Mining Machinery can be freely combined, according to the different site can be matched with different crushers, such as jaw crusher, impact crusher, sand machine, etc., unit integration can be composed of a production line. It is free to move, not limited by the site, can enter the production operation at any time, greatly saving the installation time, it is light in weight and occupies a small area. It is not only suitable for highway, but also suitable for working in rugged mountain roads and other places. Sand washing machine of SBM Mining Machinery has low price and guaranteed quality.
November 19, 2019 by zzgl5656
The vertical grinding mill has comprehensive mechanical pulverization properties such as rolling, grinding and impact. The fineness of the powder can be adjusted between 325-2500 mesh, so it is available in the production of fine powder processing of non-metallic minerals. After market practice certification, the mill is the ideal equipment for energy saving.
The density is 2.715 g/cm3, the Mohs hardness is 3, and the properties are brittle. Aragonite belongs to the orthorhombic line. It is a rhomboid crystal, gray or white, with a density of 2.94g/cm3 and a Mohs hardness of 3.5-4. It is dense. The crystal size of calcite in the physical properties of limestone is very important. The dense limestone exhibits a low porosity and a fine grain crystal structure with high strength.
After the limestone is processed by the crushing equipment, it cannot meet the requirements of the finished product, and it needs to be ground by a mill to obtain the finished product. For grinding limestone powder, vertical grinding mill can be used. For fine powders, vertical mills can be used in the field of limestone grinding. The vertical grinding mill is the excellent grinding mill machine.
November 18, 2019 by zzgl5656
The main function of steel ball in ultrafine mill is to impact and crush materials, but also play a certain role in grinding. Therefore, the purpose of grading steel ball is to meet these two requirements. Whether the grinding effect is good or not directly affects the grinding efficiency and ultimately affects the output of ultrafine mill equipment depends on whether the gradation of steel ball is reasonable, mainly including the size of steel ball, the number of ultrafine diameters, the proportion of ball of various specifications and so on.
In order to determine these parameters, we should consider not only the size of ultrafine mill equipment, internal structure of ultrafine mill equipment, product fineness requirements and other factors, but also the characteristics of grinding materials (grindability, particle size, etc.).
On the other hand, the higher packing density can make the material get a certain grinding effect. In the two-stage distribution ultrafine, the main function of the big ultrafine is to break the material by impact. The small ultrafine fills the gap between the big ball and increases the accumulation density of the grinding body to control the material flow rate and increase the grinding ability. The second is to transfer the impact energy of the ultrafine to the material. The third is to squeeze out the coarse particles in the gap and place them in the impact zone of the big ultrafine.
November 15, 2019 by zzgl5656
The weak vertical roller mill is from several hundred to 3000 Gs; the strong vertical roller mill generally refers to 3000Gs to 6000 Gs, and the medium magnetic field vertical roller mill between the two.The reason why it is classified according to the strength of the magnetic field is related to the magnetic properties of various common minerals (another post – Magnetic Mineral Classification).
However, it is necessary to know that there is no absolute standard for different magnetic strength and their matched equipment.Magnetic field strengthIn the actual vertical mill machine, the magnetic field strength ranges from hundreds of Gauss to 20,000 Gauss, some even exceed 20,000 Gauss, but it is rarely used in general beneficiation production. Excessive magnetic field strength will lead to weak magnetic minerals to agglomerate that is not conducive to beneficiation.
So the upper limit of the magnetic field strength of the strong vertical roller mill is 20000Gs.On the working surface of various vertical roller mills, the magnetic field strength varies at different points and in different ranges, and the working magnetic field is a non-uniform magnetic field. Generally, the value of the magnetic field strength expressed refers to Max. magnetic strength, some factories may list the average value.3 Permanent magnet and electromagnetic vertical roller millAccording to the of magnetic field, the vertical roller mill is divided into permanent magnet vertical roller mill and electromagnetic vertical roller mill.
November 13, 2019 by zzgl5656
1. Hammer head is made of new casting process with abrasion resistance and impact resistance.
2. Higher productivity, larger crushing ratio and smaller crushing. After crushing by the sand washing machine, the particle size of the product is small and even, and it is cubic. In addition, according to customer requirements, adjust the required granularity.
3. The use of screen grate bottom design does not require any moisture content of the material, and the operation efficiency is high.
4. The structural seal of the sand washing machine solves the problem of dust pollution and body ash leakage in the crushing workshop.
The sand washing machine for coal mainly relies on the impact energy to complete the material crushing operation. When the coal sand washing machine works, the motor drives the rotor to rotate at a high speed, and the material is broken due to the impact of the hammer head and shear tear of the material at a high speed.
At the same time, the gravity of the material itself causes the material to move from the high-speed rotating hammer to the baffle and screen, and the material larger than the size of the sieve is left on the sieve plate to continue to be hit and grind by the hammer until the size of the material needed is finally passed through the sieve plate discharge machine.