1.Into the grinding of materials and ratio of varieties: the variety of materials into the mill and the mill's ratio is directly related to yield power (kwh / t), the mill's production and quality.In the same fineness, the grinding of clinker rotary kiln, grinding mill shaft kiln clinker production fell more than 20%.In the mixed material, the slag is the most difficult grinding, cement residue on sieve finished mostly slag; like raw fly ash and coal gangue and more direct level of fly ash may be finished by grinding.The latest research shows that: any mixture of materials will reduce the strength of cement, but the activity of the different hybrid materials, which reduce the cement strength and extent of difference in terminology.Mixed materials commonly used in the activity of slag is the highest, but if the specific surface area of slag between the 300-450m2/kg, its effect on cement strength is almost the same.
2.Into the ground particle size requirements for grinding technology is designed into the grinding particle size D < 25mm design.When grinding the material into the particle size D = 2-25mm, the experience of mill output conversion formula is: Qb = Qa (Da / Db) x, where: Q representative of production, D representatives into the grinding particle size, the coefficient X = 0.1-0.145.If the add some pre-set grinding equipment, such as vertical shaft crusher, roller presses, vertical mill (CKP), Jane roller mill, fine crusher machines, table and mill production will improve significantly.Of course, the into the grinding particle size decreases, the average wear coefficient of the material will decrease, the grading of grinding media must also change.Because of wear and tear into the crusher hammer mill particle size will be thicker, so will affect the mill produced chaos, thus affecting the output of the mill and cement the finished product quality.Recommended screening machine grinding home front.
3.Into the water the cement mill fineness of the material finer, more sensitive to water, water demand will lay the ball differences grinding paste.Generally thought, grinding the material into the integrated water for every 1% increase in mill output will be reduced by 10%.When the water more than 5%, the mill on the basic "stop" grinding out.
The use of a rod mill and ball mill Comparison
(1) tungsten mine tin and other metals, or magnetic separation plant re-election, in order to prevent excessive harm caused by crushing, rod mill is often used;
(2)When the grinding process with the Sec, if the first was from 20- 6 mm grinding to a 3 - 1 mm, with rod mill grinding equipment for the first time, large production capacity, efficiency is higher.But it will be the same weight than the weight of the ball bearing rod bearing surface area is much smaller, the pressure for the second paragraph of fine grinding mill, the rod mill productivity and efficiency than the ball is lower;
(3)In some cases, can replaceshort head cone crushing machine for crushing.When dealing with soft or too hard ore (especially viscous ore), with the rod mill will be 19 - 25 mm (or even 32 mm) grinding the ore to the 6 - 10 mesh, the short head cone thansieve into a crushing machine and closed circuitconfiguration when simple, low cost, and can simplify removal of crushing plant.For a hard mineral, with a short head cone crushing machine and sieve into a closed-circuit approach might be more economical.
Dryer equipment, cement machinery,cement mill plant is loaded by the grinding of the cylinder body, named after the steel bar, cement plant process is generally used wet overflow type, can be used as an open-circuit grinding is widely used in artificial stone sand, mineralplants, chemical plants in the electricity sector level grinding.cement mill plant size characteristics of the products of ore grinding rod status.When the cement mill plant ore, the first name of coarse-grained, and small mineral particles after the grinding, thereby reducing the risk of over crushed.When the rod along the lining up when turning, during which sandwiched coarse, like bars screen, so fine sutural from the rod through, which is also conducive to clip pieces coarse, and the coarse grinding media focused on the fight againstplace.Thus, cement mill plant product of more uniform, less than smashing.
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