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Title Категория увеличаващнамаляващ Публикувана на увеличаващнамаляващ
The abrasion mechanism of lining plate of ore milling equipment Фитнес зали - гр. София 11-12-2017
Ore milling equipment is one of the ore milling equipment mills widely used in the powder ore milling equipment system in such industries as power, metallurgy, building material and chemistry. Among the spare parts of ball ore milling equipment mill, lining plate is the key and damageable part and its consumption restrains the production benefits of the ore beneficiation plant. The experts of SBM Machinery start from the research on the abrasion mechanism of lining plate to provide theoretical basis for reduce the wear of the lining board. In the running process of a ore milling equipment, the movement forms of the lining board and the ore milling equipment balls and the crushing and ore milling equipment process of the materials are very complicated which is the comprehensive effect of various abrasion mechanisms. The test observation shows that the ore milling equipment balls do not fall like a parabola thought as the previous research and directly impact on the lining board, but in the practical running process, the load height of the balls and the materials inside the cylinder is about 40% of the diameter. With the increase of the diameter of the ore milling equipment balls, the load of the ore milling equipment balls and materials will also increase, but the height of the ripple of the lining board and the driving effect of the circular pitch on the materials and the ore milling equipment balls will decrease with the increase of the diameter of the ore milling equipment mill, so that the relative height of the ore milling equipment media inside the big-diameter rolling cylinder. The calculation and the actual measurement show that the impact power on the lining board is only 2~3J or even lower. Foreign research thinks that the energy consumed by the crushing and ore milling equipment of the milling equipment accounts for only 10%-20% of the total energy. The rest part will transform to heat energy and be transformed by metal materials and materials consumed to make the lining board and the ore milling equipment balls to have plastic deformation, structural change and crack formation and expansion, which is the main reason of the abrasion of the lining plate.
The processing skills of new type portable crusher plant Фитнес зали - гр. София 09-12-2017
The application of the new crusher not only improves the processing ability and reduces the grinding ratio but also gets rid of the impact and beating to material during the crushing process. The existing of stress relief aperture reduces the hidden flaws of crushed materials and stress, which can lower the odds of secondary crushing in the processing and stored procedure and ensure the effective granularity of products. The following summary is gained from the analysis of crusher's tooth which is major part of the new type portable crusher plant. 1. Analysis about the crushing style of tooth The crushing process of the new portable crusher plant with double teeth rolls breakage is: the weak and brittle parts are crushed by the huge shear forces directly act on the rock material. The whole process takes fully advantages of the property that the intensity of shear strength and flexural strength are much smaller than compressive strength and reduces the energy consumption of crushing. 2. Analysis about the shape and layout of tooth New portable crusher plant is still determined by the tooth's geometry and arrangement except for the rational structure and proper crushing style. The rational design and proper arrangement is able to make sure that the product granularity, optimal size, material saving, prolonging the service life and reducing the power consumption.
Performance and features of different types of gold ore crusher Фитнес зали - гр. София 07-12-2017
There are many types of crushers, some of them are used for coarse crushing, while others are used for fine crushing. Different types of crushers have diversified functions and performance. Here, we will simply analyze performance and characteristics of different types of crushers respectively. Coarse crushing machine is mainly used to primarily crush bulk materials. Grain size of materials produced by gold ore crusher is larger. Currently, the maximum feeding granularity of domestic gold ore crusher is 9001200 mm( the size of feeding inlet is 9001200 mm), which is especially suitable for exploitation of large mines. gold ore crusher is generally used as the first process of stone and sand production lines. The commonly used gold ore crushers are jaw crusher, gyratory crusher, roll crusher and so on. Jaw crusher machine has the performance characteristics of low noise, little dust, big reduction ratio, even product granularity, simple structure and so on. The features of roll crusher are reliable work, low operating cost, easy replacement of spare parts and so on. Gyratory crusher has high production efficiency, low electric consumption, smooth work, etc, which is suitable for crushing flaky materials. Fine crushing machine is mainly used for further crushing small pieces of materials. Generally speaking, the materials discharged from gold ore crushers enter the fine crusher for further crushing. The smallest model of domestic fine crusher is 150250 mm( the size of feeding inlet is 150250 mm). Fine crusher is used for secondary crushing in sand and stone production lines. We usually use cone crusher, hammer crusher and impact crusher as the fine crushers. The working principle of cone crusher is the same to gyratory crusher. Cone crusher is only suitable for medium or fine crushing works, which has such features as big reduction ratio, less consumption of wearing parts, low operational cost, hydraulic protection and high degree of automation. Hammer mill crusher has the performance characteristics of even discharging granularity, big crushing ratio, less over ground materials, low energy consumption and so on. But, because of fast abrasion of hammerhead, the application of hammer crusher is restricted in crushing of hard materials. Impact crusher has bigger reduction ratio compared with hammer crusher, which is widely used in medium or fine crushing of limestone, coal, quartz, dolomite, gypsum and so on.
Analyses on ultrafine mill crushing technology Фитнес зали - гр. София 06-12-2017
Ultrafine mill is the earliest crushing equipment in domestic, adopts upper and lower jaw board to crush stone multiply. The discharging granularity is adjustable. ultrafine mill has strong applicability, simple production process, high grinding efficiency and even discharging granularity, and it is the most widely used coarse crushing equipment in domestic mining, chemical industry, building materials, metallurgy and other departments. ultrafine mill together with vibrating feeder, gold ore crusher, and vibrating screen, forms a complete set of professional rock crushing equipment, with reasonable configuration, less investment, advanced control system, which can realize automatic production. The finished products produced meet the standard of building materials. The finished stone aggregate produced by comprehensive jaw crushing plant has high quality and excellent particle size. This jaw crushing plant improves the crushing efficiency, simplifies the technological process and promotes product quality. Stone aggregate production has become the trend of development, with the construction of railway, high-speed rail and highway. The current domestic aggregate industry is still in a rapid developing stage, and the crusher manufacturers should constantly improve their quality to win the market. SBM Machinery is specialized in producing stone production line, sand production line, rock crushing equipment, powder making equipment, etc. The crushing and screening joint design covers a small area, has high yield and good investment benefits, at the same time, it is equipped with advanced electric operation controlling system, to ensure the entire process with smooth discharging, stable running, convenient operation, high efficiency and low energy consumption!
Advantages and improvement of ore milling equipment machine Фитнес зали - гр. София 05-12-2017
Ore milling equipment machine has simple structure and is usually used for crushing materials of medium hardness and crisp materials and it has wide application in stone production line and sand making production line. Even though hammer mill crusher is not good as ore milling equipment machine in production capacity, it has larger crushing ratio, so that its crushing function is more excellent. ore milling equipment crushes materials by relying on the hitting of hammer part on materials, for this reason, there will be no over-crushing particles, so that the energy can be made full use and energy consumption is reduced. In addition, hammering machine also has such advantages as simple structure, light weight and simple and convenient maintenance. The models of hammer mill crusher are various, and the discharging granularity is controlled by the grate bar device, so that the product granularity can be easily controlled. How can a ore milling equipment machine be improved? Here the experts of SBM Machinery will talk about this question with all the customers. 1. Change the monolithic construction of the upper part frame to split type. With this structure, the maintenance of rotor will be convenient, and it only needs to remove the left split part to hoist out the rotor. When changing the structure, pay attention to rift the upper rack. When welding a pair of flanges, it is required to remove the stress to ensure the assembly performance of the whole machine. Change the radian of the grate bar frame from R520 to R510 to reduce the gap between grate bar to hammers, which is also convenient for adjusting the grate bar frame. When hammers are abraded, the grate bar will have sufficient adjusting space. 2. Lengthen the grate bar frame to 160mm and arrange four more grate bars to increase the acting area of hammer mill crusher and for the products with qualified granularity to be timely discharged from the crushing chamber, reduce the over crushing particles and lower the load of the hammering machine, thus improving its production capacity. 3. Build up welding and reinforce the grate bar frame and grate bar. After installing the grate bar frame and grate bar, using wear-resisting hard facing electrode to build up welding and reinforce the grate bar frame, and the surfacing height of the quick-wear working surface should be as high as 5mm. At the same time, welding and fixing the grate bar onto the grate bar fame can prevent the grate bar frame from deforming, and if the grate bar scatters, the grate bar frame can have the functions of fastening and protection. Such improvement can greatly extend the service life of the grate bar fame and grate bar and reduce the material consumption. 4. Carry out static and dynamic equilibrium test to the rotor of hammer mill and install hitting balance hammers. Such improvement is an important approach to solve the vibration of ore milling equipment. Integrate the foundation of this crusher machine with the foundation of other driving motors and use concrete for masonry to increase its resistance to shock and prevent vibration from damaging the foundation, thus ensuring the using performance of this crushing equipment.

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