rubber lining must meet the standard HGJ32-90 "rubberlining chemical equipment" requirements.
- surface smooth, no local convex surface and concave scar plate shall not be greater than 2mm. Steel shall have serious corrosion spots, sand holes, porosity, overlap, mark manufacturing fixture to clean polishing.
Full - weld after welding, to clean up all polished beading and spatter.
- no weld porosity, slag inclusion, if there is to be welded, polished height of weld seam shall not be more than 3mm and grinding for a smooth transition or all polished.
- corner weld angle plane radius is greater than 5mm, a surface radius greater than 8mm.
Rubber lining plate for ball mill is used, both ends of the barrel body of the ball mill rubber lining board, also known as rubber lining, rubber lining. The whole ball mill rubber lining board by the end of the lining board (grid for lattice panel) and the end of the promotion, the center of the ring (grid for central guard board), filler and a cylinder lifting strip (also known as batten), cylinder liner, Confucius, fasteners and other parts.
The main advantages of ball mill rubber lining board
1, low energy consumption, the physical density of the rubber is one sixth of the manganese steel, reduce quality of the cylinder, and reduce the load on the motor, save electric energy, also is to reduce the cost;
2, high wear resistance, impact resistance
Rubber liner with special formula and by high pressure vulcanization treatment, the wear resistance of a substantial increase in service life is about 1.5-2 times of manganese steel lining board, rubber itself unique elastic buffer greatly reduces the fierce impact;
3, low noise
The collision of steel and rubber itself reduces the noise, while the rubber itself has a sound effect, to a certain extent, stimulate the enthusiasm of the staff, indirectly enhances the production benefit of enterprise;
4, easy to install
Rubber lining light quality, installation does not require special tools, more convenient greatly reduce downtime, improve the operational efficiency of enterprises
5, corrosion
Manganese steel and acid, alkali, salt and other will produce the chemical displacement reaction, accelerate the lining board wear; and rubber lining board by special technics, with corrosion resistant, thus extending the service life of the lining board is.
6, save the ball
The actual work estimates, compared with Chenban manganese steel, with an annual output of 100 thousand tons refinery, rubber liner can save 150 thousand tons of steel ball.
The disadvantage is that the rubber lining does not heat, not suitable for use in dry mill.
The ball mill rubber lining installation board
1, the general liner is directional, must pay attention to the installation, do not install anti.
2, all circumferential gap arc length should not exceed 310mm, over the place with the partition plate wedge.
3, the adjacent lining board clearance is not greater than 3~9mm.
4, lining between the plate and the inner surface of the cylinder should be laying layer according to the requirement of the design, such as there is no requirement, in between the two filling grade of compressive strength 42.5mpa cement mortar and try to fill in, part of the excess by rigid lining plate bolt squeezed out, the cement mortar is solidified again fastening lining plate bolt.
5, the installation of rubber pad lining board, the installation of 3-4 weeks will become the volume of the rubber board, open to the free elongation; in the use of rubber plate should be the long edges of the rubber plate along the axial direction of the cylinder body and the short side along the circumferential direction of the cylinder.
