Hydraulic Radial Jig

1,Overview

     Ore dressing by Gravity Jig is considered as one of the major means for gravity beneficiation with the process characteristics being continued feed of ores to be beneficiated onto screen plate in jigging Chamber, forming thick material layer. Upward flow is injected via screen plate periodically, allowing the lift of bed layer to be loose and flow to drop (or stop rising).During this process, grains of different densities will displace relatively, with the heavy materials bring delivered into lower layer and the light material being transferred into the upper layer. Concentrate and tailings will be obtained after their being discharged respectively.

    Saw tooth-wave Jig is a new type of energy conservation and highly efficient gravity separation equipment and developed based on the traditional Sine Wave Jig. The difference between Saw tooth Wave Jig and Sine Wave Jig is that the pulsation curve for jigging is of saw tooth wave shape, with speedy upward flow and slow downward flow.

    Bed layer is elevated integrally and slowly dropped with a long effective loose time, allowing significant increase of handing capacity for unit screen surface, decrease of lower limit of grain size recovery and large save of make-up water for undersize fraction. Industrial tests carried out of Saw tooth Wave Jig and Sine Wave Jig for comparison showed that the recovery rate for operation Of Saw tooth Wave Jig and Sine Wave Jig for comparison showed that the recovery rate for operation of Saw tooth Wave Jig is raised by Sn:3.01%,WO:3:5.5%,Pb:1.63%,Xn:2.04% with water consumption being decreased by 30-75%.

    Ore dressing by Saw tooth Wave Jig is capable of handing almost full sizes of mineral materials other than very fine material. It features simple process operation, heavy duty equipment handling capacity with final products being obtained through one time separation. Therefore; it has found a wide application in production. It is regarded as one of major means to cope with metallic ores such as iron and manganese ores of coarse, moderate and fine sizes and has found significant use in beneficiating tin and tungsten ores. Moreover, Jigging Method also can achieve a good result in processing primary ores bearing gold, tantalum niobium, titanium, zirconium and chrome and sand stones.

    More density minerals to be separated in ores have, wider rang the feed sizes have. For gold bearing placer, when feed grain size is less than 25mm, separation may be carried out without size classification with the lower limit of recovery up to 0.05mm..For ordinary metallic ores, size classified separation is conducted to effectively improve indexes for separation and to enhance handling capability for the equipment.

    DYTA-7750 hydraulic radial jigs are widely used on mining vessel at home and aboard as roughly selected equipment to sort ores such as alluvial gold, tin, diamond, tungsten and hematite.

    DYTA7750 hydraulic radial jigs are developed from circular jigs. They are composed of two parts, drive and tank. The drive is of mechanical hydraulic type whose power is provided by motor. Through speed-change mechanism, the output shafts of speed reducer bring along the rotation of cam which drive cyclical alternating movement of every plunger of drive cylinder so as to convert electric energy to mechanical energy and then to hydraulic energy. Through hydraulic pipes and all kinds of valves, the movement of slave cylinder is driven and the fluctuation of the jig’s cone is brought along. The jig frequency adjustment of DYTA7750 jig has two kinds of forms .According to difference in jig frequency adjustment mechanism, DYTA7750 jigs have two models; DYTA7750 and PYTA7750.DYTA7750 jigs adopt electromagnetic speed regulating asynchronous motors to realize the adjustment of jig frequency which belongs to steles adjustment. The adjustable range of jig frequency is 0-90 times per minute.PYTA7750 jigs adopt common squirrel-cage asynchronous motors. The power is transmitted through belts and jig frequency is adjusted through the replacement of belt pulley. This belongs to step adjustment. The machine is equipped with three kinds of belt pulleys which enable the jig frequency of the jig to be 60 times per minute, 70 times per minute and 80 times per minute.Besides, belt pulley of a certain jig frequency of between 60 and 90 times per minute can be provided according to the needs of users. The two types of models have advantages of their owm.Thus; the users can make their choice according to their own actual needs. The tank is of unit combination type. Every unit consists of three jigs. Every room is equipped with one trapezoidal jig. It can be made circular or fan shaped according to the handling capacity and configuration requirements of equipment. The advantage to adopt combination type is it is easy for fabrication, transportation and installation.

2,Hydraulic Transmission Principle of Jig

     This hydraulic system is mainly composed of hydraulic power unit, actuating cylinder, slave cylinder, hydraulic piping and control valves. The hydraulic power unit is mainly used to add oli.The main function of actuating cylinder is to convert mechanical energy to hydraulic energy through cam’s propelling of plunger. The main function of slave cylinder is to convert mechanical energy to hydraulic energy by the movement of plunger driven through the pressure oil transmitted by the actuating cylinder.

     Its hydraulic transmission processes are as follows；The cam 12 rotates and drives the plunger of actuating cylinder 11 to produce pressure oil. It through the one-way throttle valve 10 to the upper chamber of slave cylinder 13drives the piston of slave cylinder to move downward and bring along the cone 10 to move downward (it is also pressed downward with the weight of lower cone 1 and the gravity of water and mineral), press the oil in F chamber of the slave cylinder to get the lower chamber to produce high-pressure hydraulic oil. There has already been leather bag with oxygen of 3.5-4MPa in the compressed high-pressure accumulator 3 which accumulates energy.

     When the cam rotates from the highest point to the lowest point, the actuating cylinder plunger is pulled outward and the high-pressure accumulator releases energy. The high-pressure hydraulic oil pushes the piston of the slave cylinder upward and brings along the upward movement of cone 1.In this ways, cyclic up and down movement (pulsation) of cone 1 is achieved.

3,Technical Specifications