gold sand ShakingTable:       86--15038262768

Working Principle of Concentrating Table/ShakingTable:

The table is comprised of a deck, in somewhat of arectangular shape, covered with riffles (raised bars runningperpendicular to the feed side of the table), mounted in a nearflat position, on a supporting frame that allows the table to slidealong the long axis of the table.

On a table, with particles of mixed densities,layers of material form, a particle in suspension will be subjectedto a greater force the nearer it is to the surface of the water,and will cause it to tumble over those at greater distances fromthe surface. The combination of the particles tumbling and sliding,the flowing stream with differing velocities, will cause the bed ofsolids to dilate, and will allow high SG particles to find theirway down through the bed of light SG particles, and eventually thelow SG particles will work their way to the top, where they will becarried along by the swifter flowing water. In all gravityseparations, a difference in specific gravity of the materialsneeds to be significant, at 1 or greater. I.e., a 2.2 SG materialwill usually separate from a 3.2 SG material.

Main Features and Benefits of ConcentratingTable/Shaking Table:

How efficient is a gravity concentrating tablecompared to a gold pan? Well, using a full sized table with 64square feet of working area, a average bed depth of ? inch, with aaverage SG of solids of 1.7, and a packing factor of 0.60, there is100 pounds of ore on the table at any given period of time. Theaverage residence time of ore on a table is 7 minutes for 100pounds of ore. Most gravity tables have a sand deck for treating1/8" to 80 mesh material and a slime deck for treating -80 meshmaterial. The appropriate deck should be used when treating ores.Most used involve the sand deck.

Now, for a gold pan, a very good panner can take apan with 15 pounds of ore in it and pan it in 10 minutes. That is1.5 pounds per minute, versus 100 pounds in 7 minutes, or 14.3pounds per minute. The table is 10 times faster than a gold panusing theoretical situations. In reality it is more like 20-30times more efficient than a gold pan. In gold and mineralapplications, a full sized gravity table, like the No. 6 DeisterTable, will handle 1 ton per hour of sand feed, and less for slimefeed, sometimes only 1/2 TPH.

Concentrating Table/Shaking TableSpecifications: