gols paning machine

hi every one am here to explaine you what is that:

redges today are more technologically advanced then ever. Since the early 1900s crudely built, steam powered dredges were used in California along rivers. Divers had to use heavy equipment and suits to use this large equipment.

Back in the time of the gold rush gold dredge technology was not utilized and people were forced to pan for gold. As time went on it was discovered that much more gold was in the deeper gravel of riverbeds than the surface gravel of the banks. Today, we have advanced in our technology to where we can now use smaller tools which are easily transported and can get us into places where were not able to be prospected before. This is exciting, since there is still a lot of gold out there to find.

An exciting prospect of today’s dredging equipment is that they are far more efficient than the machines of old. Now people are known to make profitable trips in old mining areas.

There are a few different types of dredges. The most popular of these being the surface dredge.

The Surface Dredge

This type of dredge floats on the surface of the river or stream which you are looking for gold. The silt and other material from the floor is pumped to the surface through a suction hose into a sluice box. The sluice box recovers extremely fine particles of gold. A great advantage of this method is that no diving equipment is needed.

The sluice box is usually rested on a bank or floated on the surface of the water itself.

Today’s sluice boxes now come with multi-stage systems, the most advanced of which are the 3 stage sluices. These are needed because they recover finer grade gold from the material pumped with the dredge.

Most surface dredges today come with a single sluice for the added benefit of being lightweight and compact.

Underwater Dredge

This type of dredge is not as efficient recovering find fold as the surface dredge is, and is therefore less popular. It is cumbersome and hard to handle underwater. It also can not reach the hard to get areas on a riverbank as the surface dredge is. It also has to be completely submerged to work, which is less practical since it can not be used in shallow water. This type of dredge is usually used to find a spot for gold, a surface dredge is then used to efficiently recover the gold.

Gold Trommels and Trommel Mining

A trommel is basically a rotating cylinder or drum used to screen and wash material. Aggregate, stream gravels, etc are fed in at one end. The drum is angled, so the feed end is upslope, and as the drum rotates the material moves down the cylinder. A spray bar runs start to finish to wash the material and the walls of the drum are made of mesh. Larger trommels will often run several screen sizes. In mining each screen usually feeds to a sluice box or other recovery equipment to retain the gold and other valuables. The water from the washing action also runs the sluice for primary recovery.

The finest screen is usually at the top of the trommel drum, with sizes increasing towards the tailings end. Anything too large to fit through the largest screen is dumped in the tailings pile, or on larger trommels, carried away by a conveyor belt to a remote pile. The inside of the drums often have projections which serve to agitate the materials as it turns and washes.

Think of trommels as powered classification and recovery all rolled into one.

Sizes range from portable, easily carried, one-man trommels, to trailer mounted units easily towed by a quad, or still larger pickup towable units, to semi-trailer trommels to units assembled and fixed in place, with massive grizzly decks, conveyor feeders and sluices for every size of screened material, from nugget traps to fine gold separators.

Here are some new and used trommels for sale. Trommel plans also come up from time to time: 

DIY Gold Prospecting & Mining Equipment Plans

First off, many thanks to carpetjohn over at the GPAA forums for compiling much of this list! I've added a few of my own bookmarks and added some descriptions where needed, but he posted a great list over there before I even started putting mine together over here.

Also check out these great books of DIY prospecting equipment plans:

Equipment Plans - Volume I
Equipment Plans - Volume II

Also be sure to check out the projects section for project pics, etc.

Shaker Tables

Shaker tables do a great job of cleaning classified concentrates.

• The British Geolocical Survey designed this hand-powered shaker table. This is definitely on my must build list.

Rocker Boxes

Rocker boxes are cheap and easy to build, cheap and easy to operate and good at getting gold. They're also a lot quieter than dredges, highbankers and other power equipment.

• Rocker Box - PDF file of rocker box plans hosted at the GPAA site.
• River Rocker - Another PDF, but of a totally different style of rocker.

Gravity Dredge

The gravity dredge is basically a suction dredge with no motor, no pump, no moving parts, etc. They rely on gravity to build a head of suction. They aren't all that portable, but they're quiet, relatively inexpensive and they work really well.

• Gravity Dredge - plans, schematics and tons of information for more advanced/semi-permanent operations.
• Gravity Dredging for Placer Gold has an explanation on keep-it-simple (and quite a bit more portable) gravity dredging. This is the way it was first explained to me.
• Simple Simon is another take on building a gravity dredge, this one with bucket header box and sluice.

Sluice Boxes

• This Wet Willie sluice combo unit is one of the slicker pieces I've seen in a while. Not sure why, but I really like the simplicity of it.
• Several sluice box designs from lightweight to folding to wooden.
• Two more sluice projects described and with pictures.
• A poop tube (Henry Henry) and a wooden sluice can be found here.

Hand Dredges/Suckers

• Several sucker plans can be found at miningold.com, as well as a pretty nice tip diagram.
• Simple looking sucker
• Floating sucker classifier attachment thingy with multiple screen sizes, etc. Yep, it's a mouthful...

Highbankers

• If anyone builds one of these mini highbankers, please drop me an email with comments and pics. I'm curious it works. With the minimal flow discussed, I wonder if it'd work with one of those drill powered pumps I mention on the small pumps page.
• Here are some plans for a larger "highbanker/sluice" for those looking to move a little more material.

Vac Pacs

Classifiers

More DIY Equipment Sites

Misc Prospecting Equipment

hello word

Gold Pans

A lot of the larger metal detector dealers in the UK stock the Garrett gold pans and panning kits which are excellent value for money (the kit in particular, as it includes a book, a suction bottle and several pans etc. and should be available for a little less than £30) most of the larger dealers also sell via mail order, so you can buy over the phone, or in some cases, via the net.

Dredges and Sluices

Dredges and Sluices are a necessity if you want to maximise your gold finds, you will be able to process so much more material that you will find a lot more gold. Sadly, in most places in the UK their use is prohibited due to the potential environmental impact washing large amounts of dirt and material into a stream or river system can have.

Gold Prospecting Abroad

In other countries, where there is a greater potential for running a small mining operation profitably, the attitudes toward using heavier duty prospecting equipment will be very different.
Serious prospectors tend to only use gold pans to find locations worthy of bringing in the heavier equipment, panning is a method of sampling rather than a commercially viable means of gold recovery. That is not to say that you can't find significant amounts of gold through panning alone, prospectors in America and Canada certainly do, but to increase the amount of gold you can recover you need to increase the amount of material, 'Pay Dirt,'  you can process, and that is where dredges, sluices and even rock crushers come into play.
If you are new to gold prospecting and perhaps aren't very familiar with dredges and sluices, pay a visit to the Keene Engineering web site[1]. Keene (based in California, USA) have been producing gold prospecting equipment for 50 years or more and on their web site you will be able to view images of a wide variety of prospecting equipment, ranging from gold pans costing less than $10 to dredge systems costing more than $10,000.
[1] N.B. Sadly, I don't receive kick backs or bribes from Keene Engineering for recommending their web site, but it is probably the best place on the web for viewing a complete range of prospecting equipment.