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What Does a Gold Trommel Do?

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A trommel is a rotating drum used to sort materials by size. This process allows smaller gravel and fines to fall through to a sluice while larger rocks move on to further processing steps.

Before feeding into a trommel, grizzlies are frequently employed to screen out large rocks that might damage or block its meshes.


A trommel screen, commonly referred to as a gold mining trommel screen, is a machine used for sorting materials by size. The rotating drum, often constructed from mesh material, separates fine sand and gravel from larger rocks and gravel; debris falling through mesh material falls to collect while larger rocks move down the trommel towards its discharge from behind. A trommel may be used to separate gold from dirt as well as coal aggregate and ore. Furthermore it can also be used for washing/classifying/ wet screening applications such as screening of mill discharge streams.

Depending on your application needs, trommel screens come equipped with different aperture sizes. They typically consist of a motor, reducer and roller device for moving the screen along with frame seal cover inlet outlet piping – as well as potential other features like gold sluice box vibratory machine water pump shaker table combinations to form an alluvial gold washing plant.

As well as size classification, trommel screens can also help remove clay and mud from soil and rock material, break apart gold-bearing soil or gravel lumps to allow more gold to pass more easily through recovery systems such as sluices. Some models include high-pressure water jets to break apart chunks more effectively and prevent rock jams.

Prospectors find trommels to be one of the most effective tools for extracting gold from dirt and debris, especially in areas with high clay content. A trommel should be part of every prospector’s toolbox when mining for gold; its usefulness even extends to working alongside other prospecting equipment like gold cubes.

For optimal results, it is ideal that two people operate the trommel. While one will feed material into the machine, while the other can monitor operations and ensure all systems are operating efficiently. This will enable more debris to be processed more quickly through your trommel.


A trommel, or rotary screen, is used to separate materials. They’re widely employed in mining operations as well as industrial settings to sort fines out from larger streams. Gold trommels specialize in this separation by distinguishing heavier from lighter materials – ideal for eliminating clay deposits, roots and thick sand that would obstruct other equipment’s progress.

A trommel works by allowing smaller gravel and fines through while larger rocks remain outside, due to its drum being lined with screens whose opening sizes only permit certain materials through. Any extra materials will simply be blown out at the rear of the machine, leaving behind only fines that can easily be processed by subsequent machinery.

Separation or washing, is the final step of gold trommel processing. This involves running the material that was screened through a wash plant or another process before depositing it out of the back of the machine as clean, usable material for further processing. Wash plants can vary in terms of complexity; at minimum though, at least some form of water system must be involved so as to rid itself of sand and gravel remnants from heavy material.

Dependent upon the type of miner, there are various kinds of trommel plants to suit their specific needs. From portable models that can be moved as needed, all the way up to large commercial operations using large loaders for feeding gold mining wash plants that feature multiple gold trommel plants attached, these facilities can meet almost all processing needs efficiently and reliably.

Separation refers to any process where two things or people are pulled apart from one another – it could be as simple as breaking an Oreo apart, or as severe as ending an engagement or divorce relationship. Whatever it may be, in each situation the desired and undesirable materials become separated and their fate determined accordingly.


After mechanical agitation and water flow, placer mining equipment’s final step is the classification process – where larger rocks, gravel, and dirt are separated from gold by running through a trommel screen. Trommel screens work like circular mesh drums; as the drum spins it sorting materials by size is accomplished. Large rocks or debris become trapped by its screen while smaller material passes through; these smaller particles can then be put through a sluice box to extract gold from its composition.

A trommel is an indispensable piece of placer mining equipment for small scale prospectors and complete wash plants alike, and serves as an indispensable means of sorting heavy ores from fines while decreasing oversize being washed off via the sluice run sluice run system. As a result, its efficiency allows more gold to be recovered from tailing piles than before!

Trommels are used globally in operations of all sizes. A trommel is especially crucial to small-scale mining operations as it helps improve recovery process and increase how much gold you can get out of the ground.

There are various trommel products on the market, from small units that can be operated by one or two people with shovels to huge commercial-grade models that require loaders for feeding purposes. Furthermore, kits exist so you can build your own machine.

Gold trommel scrubbers are an excellent solution for alluvial mineral washing, designed to work in tandem with excavators or wheel loaders to feed materials into its hopper. A grizzly may be placed atop this hopper to sort large boulders out from finer material before entering the trommel, providing optimal operation while protecting it from damage.

Mobile scrubbers are another popular type of trommel. Able to move along tracks or wheels, they make ideal tools for hard to reach places or tougher conditions than standard trommels.


At its heart, recovery or washing involves using flowing water and mechanical agitation to separate gold from waste materials, including heavier rocks and debris such as gravels containing gold-bearing particles that have fallen to earthen banks for further processing. Furthermore, flushing away any dirt that has become trapped within your trommel may leave your final concentrates clean and ready for further processing.

Skill and experience are necessary in order to successfully use this process. To achieve optimal results, the drum must rotate at just the right speed so as to prevent material from building up on the screen and creating large clumps; otherwise you risk ending up with an ineffective concentration instead.

Hire a professional who can set up and operate the trommel for you if possible; though this might be costly (which you can easily afford using the extra money you earn from online poker on platforms described at, hiring one is worth every penny to ensure maximum profitability from your machine.

Gold trommels can be one of the most efficient prospecting tools. Used properly, they allow you to efficiently run large volumes of material through quickly and classify it either as gold-bearing or non-gold-bearing material quickly and effectively – saving both time and energy when searching for golden nuggets!

For an all-in-one solution that serves both as a classifier and highbanker, check out the Mountain Goat Trommel. Its lightweight yet portable design allows it to quickly transform from classifier mode into highbanker mode by swapping out its top box in minutes – feeding directly into Desert Fox Automatic Spiral Gold Panning Machines to complete one-man mining operations! For more info, photos, and videos on this machine visit us here.