The rod mill, a tumbling mill characterized by the use of rods as grinding media, it is used for grinding ores, coal/coke, and other materials for both wet and dry applications.Great wall rod mill can be divided into dry rod mill and wet rod mill.It consists of five parts including cylinder shell, feeding system, discharge system, main bearing and transmission system.It is widely used in refractory, chemical industry, metallurgy, glass and other grinding industries with relatively high requirement on product uniformity, as well as sand making industries.So users can choose proper rod mill according to their own actual situations.Materials too wet for fine crushing and dry screening may be wet ground in a rod mill.Practice has demonstrated the ability of a rod mill to dry grind damp materials that will pack or plug other grinding equipment.And scrap loss are reduced by correct selection of liners for the specific grinding duty.Additional benefit results from use of a backing material, such as rubber between the liners and the mill shell.1.Energy savingcompared with the sliding bearing of the old rod mill,great wallnew equipment can save you 10-20% energy in total.The production is improved more than 10% than usual.2.Good discharged particle sizethe experienced technology design on the specification can promise you a well running situation with less over crushing problem.3.Good at wet grindingwe have supplied numbers of wet rod mill for customer in coal chemical industry,in orderto deal with the coal and petroleum coke material and prepare for the coal water slurry making.4.Easy installation and easy access5.Wet overflow discharging designthe grinding rod mill can design as the first level open circuit grinding equipment, which can be widely used in the department of manual stone sand, ore treatment plant and chemical plant, etc.Rod mill is different with ball mill1.Grinding media of rod mill are steel bars.Ball mill use of steel ballsas grinding media.2.Rod mill is suitable for coarse grinding, when product granularity is between 1 to 3mm, processing capacity of rod mill is bigger than ball mill with same specification.3.Rod mill has certain selective grinding effect because grinding media of rod mill and ores is in line contact.Hence, it has uniform product granularity and less over crushed ore grain.4.Productivity of rod mill is generally about 15% lower than that of grid ball mill with same specification.When product granularity is smaller than 0.5mm, grinding effect of rod mill is not as good as ball mill with same specification.5.Feeding granularity of rod mill is generally 15 to 25mm.Product granularity of rod mill can be up to 1~3mm.Working principleduring the work of rod mill, the motor drives through the reducer, driving the cylinder to rotate.The grinding media-steel bars in the cylinder body.Under the centrifugal force and friction force, grinding media will be elevated to a certain height, and then fell in purging fall state.The material to be milled andtheywill be fed continuously into the cylinder from the feeding mouth; they are crushed by the mobile shattered grinding media, and then discharged finished material through the overflow and continuous feeding power, for the next work step.
This crushing machine is often used in the breaking process of the iron rocks that has a very low taste and fine granularity of distribution.The breaking and working principle of this crusher is that according to the distribution condition of the iron rocks in the bed of the materials, the rocks are ground and kneaded for many times by the grinding roller rotating at a very high speed which makes the ores finally be crushed into fine or powders.During the process, the combination interface of the some mineral materials and gangues will occur fatigue fracture or slight micro crack and some combination interface will separate the material completely.Some useful ores will gain complete monomer dissociation while some others will have micro crack and internal stress.The material particles that have complete monomer dissociation or part monomer dissociation will screened into rough concentrate with high taste and tailings with low taste in the coarse grain tailing classification of the preconcentration process.The kind of rough concentrate with little gangue minerals goes into the ball mill without combination interface of the particle inside the monomer dissociation and because it has a lot of micro crack and internal stress, in the ball mill, the useful minerals and gangue of this part of particle can be easily gotten better monomer dissociation.This kind of rough concentrate will contribute to the improvement of the taste of the final concentrate in the magnetic separation process.
At the same time, the size of the alumina grinding balls is also required.If the ratio is good, then the ball milling efficiency will be greatly improved.Generally, there are large, medium and small balls, and the better ratio between them can also be obtained through experiments.
Our photos for ball mill rubber liner,molded rubber and rubber wear liners,steel-backed rubber liners:.
The bond ball mill work index is a measure of the resistance of the material to grinding in a ball mill.It can be used to determine the grinding power required for a given throughput of material under ball mill grinding conditions.It is a 'locked cycle' test conducted in closed circuit with a laboratory screen.
1.Vertical ball mill: the vertical ball mill is a new type of ball mill which places the cylinder upright.Through a large number of experiments, it is found that the vertical ball mill has the advantages of high grinding efficiency, low energy consumption and low noise.
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