IXP Metals & Minerals Pty (Ltd)
5 1

Ball Mill Liner's

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IXP Metals & Minerals Pty (Ltd)
[South Africa]

Address
37 Northrop Road Impala Park Gouteng
Phone
0027-11-0386665
Contact name
Danny Cronje

Description

Some Advantages Of The Combined Self-fastening Boltless Ball Mill Liners and other useful information on Liners & Materials. 1、The Boltless Liners are more reliable and safer than normal Liners. By adopting hardness material with low toughness material the whole Boltless ball mill lining system lies in the condition of pressure and stress. 2、The biggest advantage is that the Boltless-liner concept is that in production it can be hardened to the maximum quenching hardness (i.e. for excellent wear-resistant performance). This de-creases wear consumption by over 8%. 3、Without bolt holes on shell Liners, the production process of Liners is much simpler and the quality of Liners are more reliable and consistent. 4、The Liners being Boltless eliminates Bolt Breakage and Even more important eliminates the spillage of valuable Slurry or Powder depending on the application. 5、The maintenance of Boltless Liners is decreased by over 98% during the service period in comparison with traditional Bolted Liners. 6、With Liner stability and reliability, shut-down time of mills is greatly reduced and accordingly the output of mills is increased greatly over normal Liners. 7、Noise reduction is reduced by about 5db. 8、The Liners are easily installed and existing mills need no modification. The Boltless Liners are designed into smaller segments, which are more convenient and safe to handle during installation. 9、Boltless Liners save the cost of thousands of bolts. 10、Boltless Liners can be installed to Ball Mills, SAG mills, AG Mills and Rod Mills. In fact, Boltless Liners can be used in any tube grinding machinery. Re: < Manganese Liners> At the international wear-resistant material conference, it was pointed out that Manganese is not suitable to make ball mill Liners because of its following features: Anti-arc Deformation and Ductibility. In running Ball Mills, Mn. Liners will easily creep and take on an ?nti-arc shape? which will result in a shearing force on the bolts. That? the reason why bolts easily break in Mn lining systems. Inadequate Work-hardenedening. When Mn endures heavy impact, it will harden. As known, the way in which grinding media and material interact on Ball Mills Liners is rolling and sliding effect, which just causes light impact. In such a case, Mn can not be adequately work hardened. However, we say that Mn is excellent wear-resistant material in the application of teeth plates, excavator bucket teeth and concaves and mantles of large crushers because Mn can get enough heavy impact so it can be adequately work-hardened in such a working environment. Re: At the end of 1980?, we started to use Chrome-Moly alloy to make Liners for coal mills, mine mills and cement mills, which have proved to perform very well at home and abroad. As per our 30 year research in this field, we are sure that with our special heat- treatment process, the wear performance of our Chrome-Moly alloy Liners can be increased by 20~50% in comparison with Mn Liners under the same operating conditions. Our Chrome-Moly alloy Liners can achieve the following properties: Hardness: HRC≥50, Impact value ≥ 50J. Re: < Chrome Cast Iron Liners> It is well-known that chrome cast iron (Cr: 12~28%) is a kind of brittle material which has high hardness (about HRC 60) but with very low toughness (impact value is about 5J). Especially in actual operation of Ball Mills, with the frequent impact of tens of metric ton running balls (the maximum ball size in mine generally is dia 125~140mm). We think believe chrome bolted Liners are easily broken because bolt holes are stress focus points, which becomes the source for thousands of micro-cracks per piece of wear part. In fact, Boltless Liners are specially designed for hardness material with low toughness. Thus chrome cast iron is much safer with Boltless Liners design because the working Boltless Liners lie in the condition of pressure stress; accordingly the whole lining system is strengthened.


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