In a method of making a lifter bar for use in a grinding mill, a refurbished lifter bar and a mould for producing the refurbished lifter bar, the lifter bar has a predetermined form and has a base member, and the method includes providing a mould having an interior space that conforms at least partially to the predetermined form, joining the mould and the base member together to form a cavity defined by the base member and the interior space, and filling the cavity with polymer and allowing the polymer to attach to the base member to construct a lifter bar having the predetermined form.

A monitoring system includes a fastener. A sensor is coupled to the fastener. A circuit board is electrically coupled to the sensor. An antenna electrically coupled to the circuit board.

The invention relates to a method of making a lifter bar (1a, 1c) for use in a grinding mill (2), to a refurbished lifter bar (1b) and to a mould (3) for producing the refurbished lifter bar (1c). The lifter bar (1a, 1c) has a predetermined form and comprises a base member. The method comprises the steps of providing a mould (3) having an interior space (4a) that conforms at least partially to the predetermined form; joining the mould (3) and the base member together to form a cavity (4b) defined by the base member and the interior space (4a); and filling the cavity (4b) with polymer and allowing the polymer to attach to the base member to construct a lifter bar (1a) having the predetermined form.

This disclosure relates to wear-resistant rubber compositions, such as those, for example, comprising at least one hydroxy-terminated polybutadiene, at least one natural rubber, at least one polymerization accelerant; at least one sulfur; and at least one polybutadiene, wherein the wear-resistant rubber composition may have an effective cross-linking density of at least about 3010.sup.5 moles/cm.sup.3.

A locking nut (10) and washer (12) for use with a threaded bolt. The locking nut (10) has a tool engaging portion (14), a threaded aperture (20), and a washer engaging portion (18). The washer (12) has a locking nut engaging portion (28, 36) and an aperture (32). When the washer engaging portion (18) engages the locking nut engaging portion (28, 36), the threaded aperture (20) and the aperture (32) align to be at least substantially concentric so as to receive the threaded bolt. In this manner, when the tool engaging portion (14) is appropriately manipulated to force the locking nut (10) in a first direction along the threaded bolt, the engagement between the tool engaging portion (14) and the locking nut engaging portion (28, 36) also causes the washer (12) to move along the threaded bolt in the same direction.

A locking nut (10) and washer (12) for use with a threaded bolt. The locking nut (10) has a tool engaging portion (14), a threaded aperture (20), and a washer engaging portion (18). The washer (12) has a locking nut engaging portion (28, 36) and an aperture (32). When the washer engaging portion (18) engages the locking nut engaging portion (28, 36), the threaded aperture (20) and the aperture (32) align to be at least substantially concentric so as to receive the threaded bolt. In this manner, when the tool engaging portion (14) is appropriately manipulated to force the locking nut (10) in a first direction along the threaded bolt, the engagement between the tool engaging portion (14) and the locking nut engaging portion (28, 36) also causes the washer (12) to move along the threaded bolt in the same direction.

The present invention relates to an apparatus for recycling waste raw material, capable of melting and recycling, according to size, small-particle waste metal transported by a small-particle waste metal conveyer (411), medium-particle waste metal transported by a medium-particle waste metal conveyer (412), and large-particle waste metal transported by a large-particle waste metal conveyer (413), and of recycling slag transported by a slag conveyer (414) into cover material, thereby recycling resources as well as preventing environmental pollution in advance.

The present invention relates to an apparatus for recycling waste raw material, capable of melting and recycling, according to size, small-particle waste metal transported by a small-particle waste metal conveyer (411), medium-particle waste metal transported by a medium-particle waste metal conveyer (412), and large-particle waste metal transported by a large-particle waste metal conveyer (413), and of recycling slag transported by a slag conveyer (414) into cover material, thereby recycling resources as well as preventing environmental pollution in advance.

The invention relates to a system for the in-line measurement of mill liner wear and mill bolt tension, which includes: an acoustic-wave emitter, an acoustic-wave receiver, an electronic circuit, an energy source and a communication device, all at the threaded end of a certain number of bolts; a device in the vicinity of the mill for administering communication and gathering data; and a system in a remote position for processing and displaying data.

A multi-directional tumbling cylinder for use in concentrating or cleaning of products such as dross, salt cake, slag, carbon blocks, both, or cast or molded metal pieces, wherein the tumbling cylinder is of length, the cylinder mounted upon a base, is rotated through the operations of a motor, with the cylinder capable of turning in a clockwise or counterclockwise direction. The cylinder has an intake end and an outlet, and a series of liner segments disposed therein, that interconnect together to form an inner cylinder, and the segments have a series of rifling provided upon the inner surface, and series of vanes formed upon their outer surfaces, with the riffling and vanes having sloped lateral edges, at select degrees, to provide for controlled movement and volumetric flow of product being processed, either towards the outlet, tumbled within its midsection, moving product back towards the inlet, for regulated processing and cleaning of such product. An entrance vane provides for the prompt or slower movement of castings into the cylinder for processing during its operation.