Judging by the picture you posted, I'd guesstimate that you're going to need about 3-1/2 to 4 degrees of downward angle on the box at 300 GPH to have it work with cons. If you can go flatter with more water do so. Save your tailings and re-run them to make sure you have an angle that gets all the gold.
The reason that riffles work is two fold. First, there is an eddy created behind each riffle, causing a temporary lull in the water flow. The material that is flowing is in a liquid state. This causes the heavies to be at the very bottom of the flow. As the flow passes over a riffle, the heavies will fall to the bottom behind a riffle.
10 3/4" across the top and 9 3/4" across the bottom This box can also drop into a standard A-52 style aluminum sluice box if you desire. This stream sluice box is made from durable ABS plastic to take years of abuse from your prospecting activities. Light weight, easy to use, and even easier to clean out. This drop riffle sluice box utilizes ...
How to design hydraulic riffles/sluices? I have a simple fluid bed sluice plan but some information is missing. The design has 3 pipes across the fluid bed. Each …
In my view, it is more effective to do this in the lower section of the sluice box (though, I mounted the riffles for larger gold in the upper-end of the sluice on my 8-inch dredge). I know this viewpoint is not popular with some prospectors, because they do not want to chance losing a bigger piece of gold that is allowed to get so close to the ...
Adjust the sluice up or down, just keep the string level while using your hand or finger as a tape measure. Option #2 is the same thing but using a light weight 9" …
1) smaller classification screens and then run those cons separately. 2) slow or speed up the water flow to help clear the mat's . Run another sluice box parallel to …
Here are some modification suggestions: Get some deep V rubber matting and cut it so that it fits on to your flare above the stock rubber matting. If there's gold there then you should see it in the deep V fairly early. Also, you can replace the green carpeting with miners moss.
Early installations incorporated hydraulic riffles only over a short section of the sluice run, either before or after conventional angled riffles or expanded metal riffles. …
The same still applies, although sluice design has progressed since. Water injection into the capture zone of a sluice-box, marketed as hydraulic riffles, represents …
Hydraulic riffles can be designed/configured to recover fine gold, but there are many variables and the sluice really should be tailored to suit the feed that you will be running and ultimately unless your gold is pretty much all of a fairly narrow size range you will have to go with a "compromise" design that hopefully recovers as much of the …
A. the sluice angle indicator's use is to assist the amateur / recreational gold prospector in setting the angle on his / her sluice box. No claim is made as to how much more or less may be captured by the use of this tool. Gold capturing features are built into the sluice box by the manufacturer. That being said - Setting an improper angle ...
But for most purposes the angle of use should probably fall in the range of 5 to 15 degrees, depending on needs. (For reference, 1.5 inch per foot of length equals 5 degrees. 3.5 inches per foot of length equals 15 degrees) Steeper angles produce a higher water velocity and a lower quantity of material at cleanout.
The best way to control the flow on a high output pump without putting a strain/back pressure on the pump, is to install a Y with shut off valves, the pump's output connects to the Y and then one hose would go to your sluice the other goes into your reservoir/tub, using the control valves adjust the sluice side and then balance out the …
A. Yes. Obviously if the Angle Indicator is submerged in flowing water,the water will move the indicator arm. It must be kept above the water. My sluice box has a depth of about four inches, the depth of the tool is about two inches, allowing the depth of water passing through to be about half the depth of the sluice box. Q.
The above methods are used where very long boxes can be put in. If the box is short the constant cleaning out becomes a costly operation. To overcome this difficulty extent of surface is gained by increasing the width of the box. But in a wide box it is difficult to keep the water spread evenly over the box and prevent it from cutting channels.
do i set my ripples on a sluice box to 45 or 90 degrees. 3 Ways to Change the Orientation of Text in Microsoft Word 14 09 2020 0183 32 Insert a text box A text box makes it much easier to adjust the position and orientation of text Add it to your Word document as follows Word 2007 or later On the ribbon menu above your document click …
I have a simple fluid bed sluice plan but some information is missing. The design has 3 pipes across the fluid bed. Each pipe has two rows of holes. The outside diameter of the tubues is 3/4" The hidraulic riffles need 5 GPM of water and 3-6 psi. The sluice will run about 2 cu/yds/hr of gravel mixed with 100 GPM of water over the fluid bed.
1. Place the sluice parallel in a shallow area that has a good flow of water. You do not want whitewater flowing through the sluice, as you will more than likely lose material due to the fast flow of water. 2. Ensure that the bottom of the sluice is angled slightly lower than the gate of the box.
When the box has finished running the gravel down onto the riffle area of the box, the space fills between the riffles, you can start to look for the last of the gravels to leave the front of the box. Now, if the box is running too …
Hydraulic riffles apply the same working principle in a stationary sluice box design more suitable to semi-mobile placer / alluvial gold environments than centrifugal concentrators. Due to its design geometry and depth, hydraulic riffles hold more concentrate than conventional riffle designs, producing larger volume cleanouts.
I made a similar sluice with some rib mat and gutter piece and recirculated with a 250 gph 12 volt pump and valve to control flow. Worked well if using only for cons & running slowly. The 1/4 mat's riffles will fill up quickly if ran too fast. No more than about a tablespoon full of material at a time. BagLady Bronze Member Mar 13, 2015 1,011 619
Make sure that the sluice box is leveled sidewise. You want the flow of water to be even across the riffles and mattings to ensure optimum …
A. the sluice angle indicator's use is to assist the amateur / recreational gold prospector in setting the angle on his / her sluice box. No claim is made as to how much more or less may be captured by the use of this …
The same still applies, although sluice design has progressed since. Water injection into the capture zone of a sluice-box, marketed as hydraulic riffles, represents the latest major development.
A sluice box should be set with a 4-8 degree angle. Another rule of thumb is that the sluice should be angled to drop roughly 2 inches per foot of length. The exact angle depends on the size and weight of the material, …
When setting up a sluice the proper angle must be observed. It's usually between 5 - 7 degrees of slope and should allow most round rocks and pebbles to pass through easily. You don't want the material zipping …
Each sluice and setup is a bit different. the general rule of thumb is 1 inch per foot and a deep V water flow at the head of the box. me personally it depends on which sluice I am running. with the gold hog stream sluice I run it at about 1 1/4 - 1 1/2 inch per foot drop, a hair steeper than some. if I am running my martin stream sluice with ...
All Treasure Hunting. Jul 19, 2015. #3. I made a similar sluice with some rib mat and gutter piece and recirculated with a 250 gph 12 volt pump and valve to control flow. Worked well if using only for cons & running slowly. …
A sluice box should be set with a 4-8 degree angle. Another rule of thumb is that the sluice should be angled to drop roughly 2 inches per foot of …
Sluicing - How to set the correct angle on your sluice box. Remember that the box is affected by four things: average weight of the gravel, size of the gravel, water flow throughout the box, and the angle of the box. When you get it set for time you are ready to go mining. Remember 45 Sec. is too slow and 15 Sec. is too fast.
Most sluice boxes use riffles or obstructions blocking free flow of gravel and sand from being washed out of the sluice box. These restrictions form low pressure pockets behind which gold will accumulate. Gold is 19 times heavier than water and approximately 16.5 times heavier than rock (quartz) so gravity separation can be accomplished.
The idea is to position a sluice box in a running stream so that the water does the work-- separating the dirt and rocks away from the gold. Since gold is heavy, it will stay in the bottom of the sluice, trapped in the miner's moss. A good rule of thumb is to set your sluice at a grade of one inch per foot of drop.