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Gold Sluice Box Design - Mineral Processing & Metallurgy

Sep 09, 2015· The gold sluice box is an efficient alternative to panning for gold, allowing the prospector to quickly sift through a much greater volume of sediment. Although many affordable varieties are available to purchase, they are even more affordable to build. With a little …

Grumpy Prospector Home

UnderFlow Sluice Design, A complete system for Placer Gold/Platinum mining. Ultimate (all) gold recovery up to 99%, depending upon the skill level of the operator. One Cleanline System, No Miners Moss, No Carpets, and No Positive riffles to have to remove and clean for your Gold recovery. Simple easy straight forward design that …

How to SIZE a Sluice Box - Mineral Processing & Metallurgy

Jul 29, 2015· Slope of a sluice is generally in the range of 1.3 cm (1/2 in.) to 3.8 cm (1-1/2 in.) per 30.5 cm (1 ft), depending on the size rock in the feed. To move the larger rocks down the sluice requires a steeper slope or more water, both of which cause greater gold losses. Any number of types of collectors can.

Section 3. HYDRAULIC DESIGN A. Weirs and Orifices

B. Criteria for Hydraulic Design: Closed Conduits B.1. GENERAL HYDRAULIC CRITERIA Closed conduit sections (pipe, box or arch sections) will be designed as flowing full and, whenever possible, under pressure except when the following conditions exist: a. In some areas of high sediment potential, there is a possibility of stoppage occurring

Discharge Structure, Flood Discharge Sluice Gate and ...

Discharge Structure, Flood Discharge Sluice Gate and Floating Debris Sluice Design for the Mekin Hydropower Project Ndzana Benoit 1 *, Biya Motto Frederic 2, Nganhou Jean 3 and Eloundou Banack Hervé Joseph 4. 1 National Advance School of Engineering of Yaoundé, Electrical and Telecommunications Department, ACL Laboratory, PO BOX: 8390, Cameroon. 2 University of Yaoundé I, Science Faculty ...

Hydraulic Design Manual: Hydraulics of Bridge Openings

Zone 2 - Under Bridge Opening. ... If the tailwater overtops the roadway, neither sluice gate flow nor orifice flow is reasonable, and the flow is either weir flow or open flow. ... (This flow type should predominate for the design of bridges over Texas streams.) Anchor: #i1008257 Two …

» Search Results » double sluice

Jul 08, 2020· This is commonly referred to as an "over-under" recovery system, and remains in popular use today. An over-under system is most commonly accomplished in the same basic sluice box, which is constructed with a removable false bottom. By this, I mean two separate recovery systems, one sitting over top of the other, in the same sluice box.

Plan, Design and Build a Homemade Gold Sluice Box

I went with miners moss under all the riffles in my sluice, and I strongly recommend it for you. The typical wooden homemade sluice is made of boards and varies in width from 8 to 18 inches, usually with a depth of 6 inches to a foot. A typical length would be in the three to 6 foot range.

10. Pond Outlet Structures

1. A sluice gate consists of a protected opening in the pond dike that can be easily closed with wooden boards to regulate water level and can be screened to avoid fish losses. Whenever required, it can discharge excess water continuously. 2. As the sluice gate is an open outlet structure, it does not require a …

Sluice - Wikipedia

Sluice boxes are often used in the recovery of black sands, gold, and other minerals from placer deposits during placer mining operations. They may be small-scale, as used in prospecting, or much larger, as in commercial operations, where the material is first screened using a trommel or screening plant. Typical sluices have transverse riffles over a carpet, which trap the heavy minerals ...

Build a sluice box (boil box) - Geothunder Projects

Nov 13, 2011· This sluice should last a season or two if you aren't too hard on it. This sluice design will work best on fine material such as fine gold and sand. ... Cut your boil box dividers that cause the water to flow under the rail. ... but over all it was a fun little test. I'm looking forward to hit some beaches and sandy streams. I …

What is the difference between the sluice gate and ...

Answer (1 of 3): SLUICE GATE :- Sluice gates are provided for controlled supply of water from any water source like Dam,canal,river etc.Their discharging capacity is very less as compared to Spillway.They are generally provided for canals or for feeding reservoir in the downstream or for divertin...

EXAMPLE (Sluice gate)

EXAMPLE (Sluice gate) A sluice gate controls flow in open channels. At sections 1 and 2, the flow is uniform and the pressure is hydrostatic. Neglecting bottom friction and atmos-pheric pressure, decide the velocities 8 5 and 8 6, and the horizontal force ( re-quired to hold the gate if D 56 m, D 61 m, and > L5 m. Solution

fluid-sluice-box

It is 22 inches long at the base and 17 inches wide and allows quick and easy setup of your sluice over a wide range of water heights. Removal of the sluice from the stand can be accomplished in seconds. The crossbar firmly holds the sluice down on the stand yet is easily removed so the sluice can be lifted up and out for cleaning and/or ...

Lesson 10- Culvert and Ditch Sizing

Culvert Design Aculvert is a closed conduit under a roadway or embankment used to maintain flow from a natural channel or drainage ditch. A culvert should convey flow ... which equations (nomographs) are used for design 5. Culverts over 20 feet wide are designed as a bridge (see HM 3-3.1.2) and need a backwater and scour analysis 6. Generally ...

Gold Prospectors Association of America - Forum - All Things

What are advantages/disadvantages of the flared sluice design How does the flared sluice compared to (input flow) over/under (recovery) sluice An over-under riffle flow system is commonly accomplished in the same basic sluice box, which is constructed with a removable false bot...

Sluice room design and planning | Arjo

Planning a soiled utility room. Arjo has outlined four cornerstones of an efficient sluice room to facilitate good infection control routines: 1. Soiled area. This is an area set aside for soiled goods, kept separate from the clean areas, it acts as a collection point for soiled goods. It might consist of a stainless steel discharge table.

Sluice Gate Module-6 - University of Alabama

one of the most common gates. In order to design a sluice gate it is necessary to determine the head-discharge relationship (Q=f(H)), and the pressure distribution over the gate; this lab will be focused only on the head-discharge relationship. Figure 1 shows the diagram of the flow under a sluice gate, assuming that there are no energy losses.

Homemade 3 Stage Under Current Sluice Box catching Gold ...

I went with miners moss under all the riffles in my sluice. On the three stage sluice, most of the gold gets caught in the upper part. As the gravel passes down the box, …

D.I.Y. prospecting & mining equipment parts & supplies ...

These D.I.Y. Sluice boxes are DURABLE & LONG LASTING! Perfect for the person wanting to build their own personalized recovery system for their specific recovery needs. With either 4" or 5" tall sides, they are well suited for an over/under type, 2 or 3 stage sluice for your Dredge, Highbanker, Power sluice, Trommel or Hand sluice.

Modding to a 3 stage sluice - DIY PROJECTS - Nugget ...

Sep 04, 2014· Newer Keene dredges are over under, but a 3 stage. An over under two stage works very well. I did like my newer keenes, but it took a bit of a learning curve to figure out how to best run the under part for fine gold. The best ever over under was the Keene triple wide sluice design!

Types of Weirs and Flow Over Weirs - The Constructor

Flow over rectangular weir: To find the discharge over rectangular weir, consider an elementary horizontal strip of water thickness dh and length L at a depth h from the water …

(PDF) SluiceGate Discharge Equations - ResearchGate

Using the extensive and reliable experimental data, Henry [16] developed a graphical solution for estimating the discharge coefficient of sluice gates under free and submerged flow conditions.

Chapter 3 Culvert Design - Washington State Department of ...

Chapter 3 Culvert Design 3-1 Introduction A culvert is a closed conduit under a roadway or embankment used to maintain flow from a natural channel or drainage ditch. A culvert shall convey flow without causing damaging . backwater, excessive flow constriction, or excessive outlet velocities.

UnderFlow Sluice Box - GOLD PROSPECTING - Nugget Shooter ...

Jul 23, 2013· John, the underflow sluice is not an "over and under" sluice, it only has one level with 2, 3 or more U shaped channels traversing the sluice with an adjustable wall that hangs down into the center of each channel forcing all the material to go under the walls and through the U shaped channels, the gold being heavier stays in the bottom of the U and the lighter materials washes up and out the ...

Keene 4 inch Dredge with 3 stage sluice (FREE SHIPPING)

All of our 4 Inch Gold Dredges have fully assembled dimensions of 73" x 46" x 13" and come equipped with a PJ42 Jet. New 4" Keene Gold Dredge Features: New 3 stage sluice box for unsurpassed fine gold recovery. The best in the business. !!! Dimensions: 73" x 46" x 13"; weight: 195 lbs to 215 lbs. Shown with new carrying handles and the OPTIONAL ...

SLUICE GATE - SlideShare

Apr 08, 2016· 7. Procedure: 1) Adjust the vertical position of the sluice gate so that the bottom of the gate is the desired distance b, above the channel bottom. 2) Measure the width, b, of the channel (which is equal to the width of the gate). 3) Turn on the pump and adjust the control valve to produce the desired water depth upstream of the sluice gate.

(PDF) Flow through Side Sluice Gate

Dec 01, 2003· The design of the side sluice gate to pass a certain discharge Q s. ... This paper reports experimental results on side sluice gates under. ... In this study over 250 laboratory tests were ...

Course Teacher: Prof. Dr. M. R. Kabir IRRIGAITON ...

o To help scouring and of the silt deposited over the under-sluice floor and removing towards the downstream side. o To help passing the low floods without dropping the shutters of the weir. The divide wall: The divide wall is a masonry or concrete wall constructed at right angle to the axis of the weir.

What is a Sluice Gate? (with pictures) - Info Bloom

Sluice gate design is not only limited to a vertical sliding system, however. One kind of sluice gate acts like a flap and is moved by water pressure being greater on one side than the other. Others are even cylindrical in nature. A sluice gate may be used in rice fields to control flooding or water levels.