SU719692A1 - Disintegrator - Google Patents

Description

one

The invention relates to the enrichment of placer ores, in particular to drum washers used in the mining industry for the disintegration of difficult-to-wash sands and clays of placer deposits, as well as the washing of rubble, clay and gravel.

Washing maschines used for the disintegration and washing of minerals of placer deposits are known. Such machines, as a working member, have a horizontally or slightly inclined rotating drum, on the inner surface of which the blades are located. Loading and unloading devices are provided for feeding the material into the drum and taking it out of the drum. The destruction of the material in the known washing machines is carried out at speeds of rotation of the drum below its critical value of 10 - 20%. Due to the relatively small area of the de-integrating blades interacting with the material and the low speed of rotation of the drum, the known washing machines have a small

performance per unit volume of the bar bana (specific performance).

These devices include a disintegrator, which includes a cylindrical drum mounted on the supporting and driving rollers with disintegrating vanes inside, loading and unloading devices 1.

The known disintegrator processes the mountain mass in an aqueous medium at a T: W ratio of 1: 2 or more. As shown by experimental studies of the modes of operation of the disintegrator charge (material) with such a solid-to-liquid ratio, its slip relative to

Claims (1)

drum, the value of which lies in the range: for sands-0,475 - 0,515, for clay 0,360 - 0,425. In view of the large slip, at a working speed of the drum of 18 rpm, which corresponds to 0.8, the critical load (material) is turned in the direction of rotation by an angle not exceeding 15 ° - 18 °. In this case, a cascade mode of operation of the material being processed is provided in the drum. Disintegration in this version is mainly due to the friction of the particles of material among themselves, as well as about the blades and drum lining. Processing the load in the lower part of the drum reduces the time of impact of the disintegrating blades on the material, which, for a given grinding class, reduces the capacity of the disintegrator. The introduction of additional disintegrating elements into the drum is difficult, and the cascade mode of loading does not provide sufficient intensification of erosion by these elements: because of the small area of their contact with the material being processed. In this connection, the existing disintegrators have large sizes and relatively low productivity per unit volume of the drum (specific productivity). For example, the known disintegrator 3600 XX 7800 with a capacity of 400 tons per hour has a drum volume of 78 meters with a length of 7.8 meters and a diameter of 3.6 meters. The capacity of this disintegrator per meter of drum volume is 5.15 tons / hour. the specific productivity of the disintegrator due to more efficient destruction of the initial material t.; The goal is achieved due to the presence of an additional disintegrating element made in the form of longitudinal knives with blades rigidly fixed on the end walls of the drum. FIG. 1 shows a disintegrator, a longitudinal section; in fig. 2 - the same, cross section; in fig. 3 is a diagram of the interaction of additional blades with loading. The disintegrator consists of a drum 1 supported on rubberized metal drive 2 and supporting 3 rollers. A two-motor drive 4 is used to rotate the drum. On the loading side there is a loading tray 5, at the back wall of which water supply nozzles 6 are placed. The inner surface of the drum is lined with a rubber-metal lining fixed with metal caps 7, on which disintegrating vanes 8 are installed. disintegrating element 9, made in the form of four longitudinal knives 10, located around the circumference of 0.75 m from one another and carrying additional lo patki ii. Scraper blades for blades with a bolt joint, which allows to change the angle of their installation, thereby allowing a change in the resistance to movement of the material in the direction of discharge and, consequently, the duration of disintegration. Along the length of the drum 1, the And blades were located along a helix and, when processing hard-washed clays, were set at an angle of 20 ° to the transverse axis of the drum. Between the disintegrating blades 8 of the drum 1 and the longitudinal knives 10 provides free space, eliminating sticking difficult-washing materials. The material that is eroded to a given class is unloaded through the face grille 12, and the non-eroded material and large solid inclusions are fed to a conical screen 13. The erosion process is intensified as follows. The horn mass together with water through the loading chute 5 enters the drum 1, which rotates at a supercritical speed, taking into account the slip, the maximum possible rise of the material being processed along circular paths AI - A2, does not make it the outer layer before centrifuging. On these trajectories x, the blades 8 carry out the destruction of the material and its transportation to the unloading grid 12. In the area of the trajectory As, -Ai, which is angled to the vertical axis of the drum (gr 140 ° -170 °), the material being disintegrated goes to the parabolic trajectories, on which moves from zone A.) - A.-. to the zone. Additional vanes II, which are at enemy speeds of drum 1, intersect the flow of material located on these trajectories and, meeting the non-washed material, disintegrates it. Large, unwashable material falling onto the fender blades 11 is disintegrated by them and discarded to the load, which results in an increase in the residence time in the drum and, therefore, disintegration. Claims of the invention: Disintegrator, including cylindrical mounted on supporting and driving rollers, drum with disintegrating blades inside, loading and unloading devices, characterized in that, in order to increase the specific performance of the disintegrator due to more efficient destruction of the source material, it is equipped with an additional disintegrating element made in the form of longitudinal legs rigidly fixed to the end walls of the drum with blades. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 181020, cl. At 03 B 5/00, 1964 (prototype). P . . Pu Orlj TPrui    N rrr-t f .. v ..; 9: l vvrl: ". vl; frA.k ;: i 4nnMfVV "ZVV4CWnfl 0nCW KVV ieVVteV4EIV" 9h ± "i K" ftUte4ElteVVW "V" K WK pi yra-sj-sTTf-jf-B-M-int-x-r -: 6 7