The time of fluidization in a jig can thus be controlled in such a way as to make Plunger jigs are typified by variations of the Harz Jig (Figure ) that provide. HARTZ TYPE JIG. • List item here. • List item here. • List item here. • List item here . Over 50 years, Mineral Process. Equipment Pvt. Ltd. has enabled cus-. mineral jig and Harz jig. The operating variables used to determine the effectiveness of jigging include, particle size, velocity of water and amplitude. Recovery of.
|Published (Last):||11 February 2005|
|PDF File Size:||17.92 Mb|
|ePub File Size:||6.98 Mb|
|Price:||Free* [*Free Regsitration Required]|
Many plants are treating ores in which the gangue is free at a coarse mesh and where a coarse bulk concentrate is economical. As soon as a point on the taper riffle-cleat was reached where the hadz came above the cleat, that moment the grain would rise over the cleat and drop into the next groove.
Essentially it consists of an open tank, filled with a fluid, with horizontal or slightly inclined jig ‘screen’ near the top upon which the particles are supported, and through which the fluid flows in alternating directions. This sorting-column must have the same velocity of rising current in all parts of jiy horizontal section across it. This gives a seventh product.
Definition of Harz jig – glossary
This, when worked out mathematically, should give a diameter-ratio of 6. Pneumatics jigs can treat minerals as fine as 65 mesh, as course as 1to 1.
No pumps or elevators are needed in the ball-classifier circuit, as the jig acts as a launder.
It yields its series of products graded from coarse to fine. For example, in the direct pulsator-classifier, Fig. If it has too much included grains it will need to be recrushed. The inflowing jets, however, have three variations, which should be mentioned. Here again we see the ratios run from 3 to 3. In ore concentration pieces as course as 1 inch. To put the hindered-settling principle into practical final form I have made five designs: The stuff is fed in regularly at the head of the jig, and the strokes of the piston raise both the bed of heavy particles and the ore.
The oversize will be free.
Prepared By:- Prabir Kumar Roll No/08 Ravi Kumar Roll No/08 – ppt video online download
It is believed that oft-repeated pulsations will give an even rising current when passing up through a mass of sand; first, because it comes by pulses, and secondly, because it comes through the sieve hafz high velocity compared with full teeter. Then different provision will have to be made.
Jig may have belt or motor drive. It is also shown that slow suction and slow jigging take place when the ratio of diameters is 2. The light particles pass into next compartment where currents are of lower velocity. The undersize of the trommel is fed to the next trommel, with holes 2. Standard construction is tanks and frames made of kiln-dried Douglas fir and laminated wood plungers. Full Teeter—When a water-current rises, Fig.
Hindered Settling Equipment & Classifier Review
It has one fatal error: For all these matters of computation of classifiers see my book. The grizzly and the breaker, let us assume, have brought the material to 25 mm.
The tailings are free from fine free mineral. What I have said here of the direct pulsator-classifier is in the jog true of hindered-settling classifiers No. Bodies falling through water in a tube do not attain as high a velocity as in falling through the same medium in large vessels. This method is not systematic and may carry forward into the later pockets larger grains than belong there.
This gives a plunging-stream feed to all the pockets and breaks up the sand-banks, carrying forward the sand to the next pocket. Having made this definition, we can then study to see in what way the machines make their losses, and plan remedies for them in an intelligent way. It follows from this that where the valuable mineral is in large grains coarse crushing is suitable; where it is in medium-sized grains, crushing to medium sizes would be required; and where the grains are very fine, extremely fine crushing would be required.
Spigot-products finer than the two coarsest will ordinarily go to the Wilfley table. The open circles at the left represent quartz with a gravity 2.
Many flotation plants today are grinding to fine sizes. Registration Forgot your password? The advantages gained by the pulsator-jig far jug than compensate haarz the above-mentioned disadvantage. The initial period of the fall in water, during which the motion depends chiefly on density, is thus continually reproduced, and the result is a perfect separation of heavy from light particles of ore when working on any materials except the finest pulp.
These grains cannot be handled, therefore, by settling. Taking these up in order: Finally, we have a pressure-box into which the wash-water is admitted and where it divides itself into two parts, that which rises and does the work in the sorting- column and that which goes down and out the spigot with the discharged sand.
It is suited for non-metallic or open-circuit work in the laboratory especially where a large quantity of concentrate must be obtained. By David Michaud T