gold mining spiral

gold magic - the gold magic spiral gold recovery system

gold magic - the gold magic spiral gold recovery system

There's still lots of gold waiting to be discovered. Mining engineers tell us that only 10 to 20 percent of the earth's gold reserves have been found. Using the latest in computer aided design and engineering, Gold Magic has made significant changes to the original style gold pan. It is the first major change in the gold pan in 4,000 years! We have coupled the patented spiral gold pan with a high tech, portable power unit, making gold panning automatic. Now anyone can become a pro at gold mining.

In 1989 an experienced gold prospector in Seattle, Washington was fed up with inefficient mining equipment and created the first Gold Magic. Through the years the original hand held Gold Magic pan has seen many modifications and improvements. Today the Gold Magic line of products are the most effective, efficient and reliable gold recovery systems on the market.

In 1999, the Gold Magic line of products was relocated to a new manufacturing and sales facility in Northwest Montana and in 2013 to California.Gold Magic Incorporated is a family run business. Our objective is to provide the best possible mining equipment at the best price. Our commitment to customer service is exceptional.

gravity spiral concentrator working principle

gravity spiral concentrator working principle

The gravity spiral circuit is designed to extract and concentrate coarse gold from the recirculating load in the mill grinding circuit and hence prevent a build up within that circuit and the eventual escape of some of that gold into the C.I.L. tanks and thereon into the final tails. (See fig. 4)

For the spirals to work efficiently the feed supply must have consistent characteristics and be of a constant rate. Variations in the flow rate, the feed size distribution and percentage solids will have adverse effects upon separation. Generally the solids tonnage should give adequate loading of the concentrate and middlings areas and the pulp density should be low enough to ensure mobility of particles in these areas. BUY SPIRALS

Feed to the spirals may be adjusted by the moving of two splitter arms on either side of the cyclone underflow discharge box, this altering the volume of the feed passing over the splitter screen. (See fig. 5)

The feed may also be adjusted by varying the speed of the gravity feed pump. This is necessary when the mill feed has been dropped and it is impossible to get sufficient feed for the gravity pump by adjustment of the splitter arms. At such times the speed will need to be dropped and the water additionadjusted to provide optimum feed density.

The pulp density may be altered by the addition of water, before the splitter screen, in the gravity feed pump hopper or to the concentrate launder beneath the primary spirals. The latter option adjusts the density of the feed to the cleaner spiral only.

The static distributor (See fig. 6) at the head of the primary spirals ensures an accurate division of the pulp stream to the spirals. For maximum efficiency a constant head should be maintained in the head pot. The head can be adjusted by either altering the flow rate from the splitter screen and/or altering the annular gap between the head pot and the distributor body, by moving the head pot up or down as required.

Feed from the splitter screen passes down into the gravity feed pump hopper and from there it is pumped to the static distributor above six triplex type primary spirals. As the pulp passes down these spirals; separaration of particles occurs according to specific gravity and the heavier minerals progress to the inner profile while lighter minerals are forced towards the outer profile, along with most of the water and slimes. At the bottom of each spiral layer there are splitters which can be adjusted to ensure the optimum recovery of coarse gold. (See fig. 7)

The middlings and tailings from the primary spirals are directed to both the mill feed and the mill discharge pump. The proportion going to either may be adjusted so as to help achieve optimum grinding conditions.

The concentrate from the inner outlet of the cleaner spiral is fed directly on to the Wilfley table and the middlings and tailings report to the gravity sump pump which feeds into the mill discharge pump feed hopper.

The Humphreys Spiral Concentrator, which was invented by I. B. Humphreys and first used in 1943 for concentrating chromite in Oregon beach sands, consists of five or six spiral turns of a modified semicircular launder which is about the size of a conventional automobile tire. Feed enters the top spiral and the tailing discharges from the bottom one, while concentrate and middlings are cut off by outlet ports regularly spaced at each turn of the spiral, and the products passed through rubber hoses to common launders which run the full length of a bank of spirals. Wash water is supplied from a small wash-water channel paralleling the main channel.

Operating entirely by gravity flow and involving no mechanical parts, the separation of the heavy constituents of the feed is effected by the same centrifugal forces and flow gradients encountered in ordinary river or stream concentration.

A capacity of 38 tons per spiral was obtained in the 1000-ton per 24 hr. Oregon plant operating on about a minus 40-mesh feed and in the 5000-ton plant recently installed near Jacksonville to concentrate ilmenite 174 roughing, and 12 finishing spirals have replaced an installation of tables and flotation cells.

The Humphreys Spiral has been successfully applied to recovery of chromite from chrome sands, rutile, ilmenite, and zircon from sand deposits, tantalum minerals and lepidolite from their ores, gravity concentration of base metal ores and in the cleaning of fine coal.

How it works: Pulp is introduced at the top of the spiral and flows downward. As the pulp follows the spiral channel the light particles in the pulp stream move outward and upward into the fast flowing portion of the stream while the heavy particles move to the inner slow moving portion of the stream, where they are drawn off through concentrate ports.

Adjustable splitters allow any portion to be removed through the ports. Tailing is discharged at the bottom of the spiral. Spirals are usually installed in double units, two spirals to a frame, in rows of two to twelve. Feed is split evenly to all spirals. At one plant 21 rows of 12 spirals each are fed by one pump.

The Humphreys Spiral Concentrator is a simple, efficient gravity concentrator which effects a separation between minerals of the proper size range that have sufficient difference in their specific gravity.

This concentrator is a spiral conduit of modified semi-circular cross-section, with outlets for removal of concentrate and middling. Pulp is introduced at the top of the spiral. As the pulp follows the spiral channel, lighter particles in the pulp stream move outward and upward into the fast moving part of the pulp stream. The heavy particles move to the inner, slow moving portion of the stream, where they are drawn off through concentrate or middling outlets. Adjustable splitters allow any portion of the concentrate or middling to be diverted through the outlets. Tailing discharges from lower end of spiral. A full- size spiral is used for laboratory testing. Two arrangements are suggested for test work.

In the closed circuit test unit illustrated, although a full-size spiral is used, as little as 20 pounds of material will indicate the possibility of spiral concentration in a batch test. By removing measured quantities of products, and adding like amounts of feed in repeated steps, substantial samples may be taken for analysis and estimates of capacity. Results from this procedure, using 100 to 300 pounds of material, are close to pilot test results.

Another arrangement, also using a full-size spiral, is a small pilot plant, and is suitable for test work where a larger quantity of material can be handled. The storage tanks may be built on the job from drawings supplied. This unit allows continuous feeding of material and permits accumulation of concentrate and tailing in separate tanks, which may then be re-run as feed for second stage concentration or scavenging of tailing.

Spiral concentrators are modem, high capacity, low costunits developed for the concentration of low grade ores. Spirals consist of a single or double helical sluice wrapped around a central support with a wash water channel and a series of concentrate take-off ports placed at regular intervals along the spiral (Figure 17). To increase the amount of material that can be processed by one unit, two or more starts are constructed around one central support. New spirals have been developed that do not use wash water. These new units have modified cross sections and only one concentrate-take-off port, which is

rapid wear of the rubber lining and irregular wash water distribution resulted in major production problems. Although still in use, the Humphreys cast iron spirals have been largely superseded by a variety of other types, notably the fiberglass Reichert spirals and new, lightweight Humphreys spirals.

The processes involved in mineral concentration by spirals are similar for all models. As feed containing 25-35% solids by volume is fed into the channel, minerals immediately begin to settle and classify. Particles with the greatest specific gravity rapidly settle to the bottom of the spiral and form a slow-moving fluid film. Thus the flow divides vertically: one level is a slow-moving fluid film composed of heavy and coarse minerals; the other level, the remainder of the stream, is composed of lighter material and comprises the bulk of the wash water. The slow-moving fluid film, its velocity reduced by friction and drag, flows towards the lowest part of the spiral cross-section (nearest the central support) where removal ports are located. The stream containing the lighter minerals and the wash water develops a high velocity, and is thrust against the outside of the channel (Figure 18). Separation is enhanced by the differences in centrifugal forces between the two: the lighter, faster flowing material is forced outward towards the surface, and the heavier, slower material remains inward towards the bottom.

Spiral concentrators are capable of sustained recoveries of heavy minerals in the size range of 3 mm down to 75 microns (6 to 200 mesh). They are suitable for use as roughers, cleaners, or scavengers. Feed rates may vary from 0.5 to 4 tons per hour per start, depending on the size, shape, and density of the valuable material. Some factors that affect recovery are the diameter and pitch of the spiral, the density of the feed, the location of splitters and take-off points, and the volume and pressure of thewash water. Individual spirals are easily monitored and controlled, but a large bank of spirals requires nearly constant attention.

Advantages of spiral concentrators include low cost, long equipment life, low space requirements, and good recovery of fine material. They can also be checked visually to determine if the material is separating properly. For maximum operating efficiency, feed density should remain constant, the particle-size distribution of the feed should be uniform, and fluctuations in feed volume should be minimized. Spiral concentrators will tolerate minor feed variations without requiring adjustment. Spiral concentrators, like cone concentrators, are efficient, low-maintenance units that should be considered for any large- scale gravity separation system.

The newer Humphreys spirals are capable of recovering particles as small as 270 mesh (53 microns). In a test at CSMRI, a new Mark VII Reichert spiral recovered 91.3% of the free gold contained in the feed in a concentrate representing only 5.4% of the feed weight. The unit showed little decrease in gold recovery efficiency with material down to 325 mesh (45 microns) (Spiller, 1983).

panning machine, tgp gold miner spiral panning machine high plains wholesale

panning machine, tgp gold miner spiral panning machine high plains wholesale

1/4" drop at the end of the seven spirals. The Gold Miner is the only spiral wheel with this gold grabbing feature. The water volume from the spray bar is adjustable to accurately remove the black sand and leave you with clean gold.The entire unit stores away in a durable plastic case. Dimensions of the case are 20" long, 15" wide, and 13" high.

gold panning machines | automatic gold panning equipment high plains prospectors

gold panning machines | automatic gold panning equipment high plains prospectors

Speed up your gold recovery using modern technology by using an automatic gold panning machine. Spiral wheels help you move more gold rich material so you can recover gold quicker. These gold panning machines come in a few different varieties. The most popular is a spiral wheel. This piece of gold prospecting equipment uses an A/C power source like a deep cycle 12V marine battery to process your classified gold bearing dirt. The wheel circulates and sloughs off lighter, non-gold bearing dirt and rocks and slowly spirals the heavier material towards the top and dumps it into a small cup located on the back side of the machine leaving you with gold and a small amount of heavier black sand. These spiral wheels can come with without a speed control. Speed control allows you to control the One of our most popular models is the Dessert Fox gold wheel. This spiral wheel can also be used in conjunction with the Mountain Goat Trommel to process a great deal of gold bearing material without having to classify.

Speed up your gold recovery using modern technology by using an automatic gold panning machine. Spiral wheels help you move more gold rich material so you can recover gold quicker. These gold panning machines come in a few different varieties. The most popular is a spiral wheel. This piece of gold prospecting equipment uses an A/C power source like a deep cycle 12V marine battery to process your classified gold bearing dirt. The wheel circulates and sloughs off lighter, non-gold bearing dirt and rocks and slowly spirals the heavier material towards the top and dumps it into a small cup located on the back side of the machine leaving you with gold and a small amount of heavier black sand. These spiral wheels can come with without a speed control. Speed control allows you to control the One of our most popular models is the Dessert Fox gold wheel. This spiral wheel can also be used in conjunction with the Mountain Goat Trommel to process a great deal of gold bearing material without having to classify.

treasure and gold products tgp-001 gold miner spiral panning machine for sale online | ebay

treasure and gold products tgp-001 gold miner spiral panning machine for sale online | ebay

I have been using the standard Blue Bowl that I purchased over a year ago. Call medreamer but I always thought there might be some gold that did not get caught in the Blue Boel. So like any other gold seaker, I kepy my paydirt concentrate over the year knowing that if I could just find the right device to get the gold out of it I just might make some money. Well let me tell you all this, The first quart of old paydirt I ran through the Gold Miner Spiral Wheel I found gold. This Gold Miner Spiral does exactly what it says , If there is gold in the dirt this unit will find it. Easy set up instructions and well built for years to come. I will be showing a video of this unit on my blog at "thesportsmansgallery" You can also check out my other videos on my Youtube channel as well be searching for me "thesportsmansgallery" Happy mining! Thehunstman (aka) deltadogs

If your to impatient for hand panning the spiral panning machine is for you. It removes the gold from your pay material every time. I've taken a flake of gold and put it in sand and ran it through the wheel. It finds that flake every time, have done it five times and still have the flake of gold. After seeing my wheel in action my brother purchased one and loves it. He had some pay material from his slush box, ran it through the wheel and in a half hour the wheel pulled about a quarter oz. of fine flour gold out of the material. The spiral panning machine is great for the recreational prospector. It separates the gold from the pay material every time.

SYSTEM WAS PROFESSIONALLY PACKAGED AND PROMPTLY DELIVERED . AS FOR QUALITY WHEN I INSPECTED THE SYSTEM IT IS VERY WELL MADE WITH QUALITY PARTS AND APPEARS THAT IT CAN ACCOMPLISH THE WORK REQUIRED OF IT WITH NO TROUBLE. LIGHT WEIGHT IT CAN BE ADDED TO YOUR PACK WITH LITTLE EFFORT. ALSO HAVING ITS OWN CARRYING CASE IS VERY CONVENIANT. IT IS WELL WORTH THE PRICE. RCBraauwn NEVADA

spiral classifier

spiral classifier

Spiral Classifier is a traditional type of classification equipment, mainly for metal mineral processing for the slurry density and particle size on the wet grade, mining operations could also be used in the flow desliming.

it is hard to get very fine product, especially for product with -200 mesh over 90%; It is not easy to automate control it, and the classification efficiency is not high; It needs a large space for installation.

gold miner advanced spiral wheel gold prospecting panning machine - serious metal detecting

gold miner advanced spiral wheel gold prospecting panning machine - serious metal detecting

The legendary Gold Miner Spiral Gold Panning Machine has been a prospectors favorite since 1994. This unit is loaded with features to make your panning experience not only fun, but potentially profitable because the Gold Miner will get the smallest speck of gold out of even the most stubborn black sands!

Each GOLD MINER comes with: 13 spiral wheel, pump and spray bar assembly, catch cup for gold, drive unit with frame, tailings container, pump filter, carrying case with cover, and a 5 YEAR WARRANTY. Just connect your 12 volt DC power source or battery (not included) and you are ready to prospect!

Take your Gold Miner spiral panning system anywhere! Weighs about 10 pounds including the self-contained carrying case. Dimensions of the carrying case are 20 inches long, 15 inches wide, and 13 inches high. The spiral pan is 13 inches in diameter. All components are designed for rugged outdoor use with no lubrication or maintenance. Runs on 12 volts DC.

The GOLD MINER 5 YEAR WARRANTY written by the manufacturer: If within 90 days from the original date of purchase, your GOLD MINER Spiral Gold Panning Machine fails due to defects in either material or workmanship without any visible signs of abuse or neglect, Gold Leisure Products will repair or replace at its option, all necessary parts without charge for parts OR labor for 90 days. From 90 days to 5 years, a charge of $15.00 is required to cover the cost of return shipping.Gold Leisure Products is committed to the quality and craftsmanship of the Gold Miner and is proud to offer the best spiral gold panning machine on the market.

The Serious Metal Detecting website is currently open all day, and every day. However, our brick and mortar is temporary closed during the pandemic. Be sure to shop online for our new metal detector packages and our best metal detectors for prospecting gold. Serious Metal Detecting also offers videos, books, and DVDs for the best experience in prospecting. Shop for metal detecting batteries, carrying bags, arm rests, headphones and carefully selected start-up kits. You can also shop online for metal detecting parts & accessories, and the top manufactures such as Garrett and Minelab. Free shipping for orders over $99.00 within the States. Other metal detectors include Minelab EQUINOX 800, Garrett ACE and Minelab EQUINOX 600 metal detectors which in-stock and ship the same day.

gold miner spiral gold panning machine: spiral pan gold prospecting machine, automatic gold panning machine

gold miner spiral gold panning machine: spiral pan gold prospecting machine, automatic gold panning machine

Want to upgrade an older Gold Miner or Desert Fox? This pan will fit either one. The "Gold Miner" pan is the only one with a RECESS at the beginning of each spiral. This causes a rolling effect on your concentrate as the pan rotates.

gold genie spiral panner prospector model, gold mining equipment, gold panning - serious metal detecting

gold genie spiral panner prospector model, gold mining equipment, gold panning - serious metal detecting

Gold Genie manufactures three different quality spiral recovery systems in their Oregon facility and provides a 5 year factory warranty with a 1 year warranty on the pump and motor. All three are designed to recirculate water with the 12 volt pump which is provided.

The Serious Metal Detecting website is currently open all day, and every day. However, our brick and mortar is temporary closed during the pandemic. Be sure to shop online for our new metal detector packages and our best metal detectors for prospecting gold. Serious Metal Detecting also offers videos, books, and DVDs for the best experience in prospecting. Shop for metal detecting batteries, carrying bags, arm rests, headphones and carefully selected start-up kits. You can also shop online for metal detecting parts & accessories, and the top manufactures such as Garrett and Minelab. Free shipping for orders over $99.00 within the States. Other metal detectors include Minelab EQUINOX 800, Garrett ACE and Minelab EQUINOX 600 metal detectors which in-stock and ship the same day.

6 types of micro-gold recovery equipment in action

6 types of micro-gold recovery equipment in action

If you are a placer gold miner, then you will eventually figure out that you need to learn how to capture micro gold. Im talking about the small stuff the dust the specks those teeny-tiny little particles of gold that you can barely even see.

Many prospectors take pride in their setups that they use to recover extra-fine pieces of micro gold. Big nuggets, pickers, and flakes are relatively easy to recover using standard equipment, but the small stuff is a challenge. Not only do you need specialized equipment for the job, you also need to learn how to set it up properly for maximum gold recover.

Here are a few different ways that miners are able to recover those tiny specks of golden goodness! Check out the videos and see what it takes to operate them properly. Each type of gear works a little differently, but the ultimate goal is the same. Catch and recover that small gold.

The Gold Cube does a great job of catching very tiny gold. It generally isnt used as the final step, since it will also catch and retain black sands too. The huge benefit of using the Gold Cube is that you can feed a lot more material into it than any of the other equipment in this article. It will leave you with some super concentrates that are very rich with gold that you can run through a final cleanup to clean out the gold.

There are a lot of different makes and models of micro sluices out there, but they are all relatively similar in their design. They are just like a regular stream sluice, except they are designed to run only super fine material at a low flow. This way you can get the black sands out of your gold in a contained environment. These are sweet for the final processing of your concentrates. Just keep in mind that you feed them SLOWLY or else gold will blow out the bottom.

These nifty inventions have been around for quite a while and they are a really neat tool for micro gold recovery. Basically the constant spiraling action will allow larger and lighter material to drop out and will retain only the heaviest material (i.e. gold). This video shows it quite well, and how they can be used with both dry and wet material.

These sweet little shaker tables are great for fine gold recovery, particular when you are processing gold that is very flat and flaky in texture it works exceptionally well. The water will flow over it while the rounder material will roll right off the table. Some very large commercial mining operations use large shaker tables for their final processing.

Of course I cant forget to mention the trusty gold pan! Yes, all of the equipment above will work faster to process larger amounts of concentrates, but it is amazing just how well you can recover even the finest micro gold if you use a skilled panning technique. This video does an excellent job of showing a technique to use a simple pan to recover even the tiniest micro gold.

Related Equipments