What are the ball mill lining board installation requirements
The role of the ball mill lining board has two, one is to prevent the cylinder grinding media and material direct attack and slurry erosion wear;2 it is to improve grinding media to produce grinding movement.Therefore, the material and shape of the cylinder liner of ball mill production has a certain impact.Ball mill to cylinder liner material is a lot of more phyletic, generally can be divided into metal (alloy) and nonmetallic material two kinds big.Metal plate mainly include: high manganese steel, high chromium white cast iron, hard nickel white cast iron and manganese in cast iron, etc.Non-metallic materials plate at present are: ceramics, rubber and rubber magnetic lining board, etc.Install the ball mill lining board has the following requirements:1, the plate is installed between side plate and cylinder end cover with a compressive strength 43.5 MPa grade cement mortar to fill.2, fixed end plate bolts shall not let cement mortar filling and die, should be able to make a turn or pass in and out.3, lining board is generally have directional, when installation should pay attention to, don't Ann inverse.4, all the annular gap arc length should not exceed 310 mm, more than the local steel wedge, the partition.5, the clearance between the adjacent plate is not more than 3 ~ 9 mm.6, plate and cylinder body surface should be according to the design requirements for laying between interlayer, if no demands, can be in between the two filling 42.5 MPa grade cement mortar compressive strength, as far as possible full of, spare parts through extrusion solid plate bolts, cement mortar bolts fastening plate again after solidification.7, the installation of rubber plate lining board, 3 ~ 4 weeks before installation open the roll of rubber sheet, make it free elongation;When using rubber sheet, rubber sheet should be time of long side along the shell axial, short edge along the circumferential direction of the cylinder.8, carefully check the plate bolt hole geometry and plate bolt, carefully clean plate bolt hole and lining on the flash, burr, bumps, make the bolt free to wear into the required position.9, complete sets of plate bolt should be harsh, dustproof washer, flat washer, spring washer, nut;To prevent leakage gray, do not forget to use when using dust pad.10, fastening plate bolts should be used when the torque wrench for homework, different specifications of the plate bolts should be tightened according to the requirements of the tightening torque corresponding.