6220SMAX 6" Super max Dredge by Keene Engineering

This is Keene Engineering's Newest 6" dredge that is designed for super fine gold recovery even down to 300 mesh. This new dredge has it all, portability, breaks down into small component, amazing fine gold recovery high power and more. The new flotation system provides superior stability even in fast water and is very comfortable with all the deck space and the large carpeted center platform in center.

[@cjsoutdoors4412]

I really like the explanations of the sluice components starting at 6:50

[@KeeneEngInc]

You are right I will have to add them into the main online order system. Thank you for the heads up

[@JasonAlexzander1q47]

So around min 9-10 I picked up that Pat is not a fan of "rubber riffles" aka HOGMAT (making it a purpose not to name names at that point, but giving the illusion of being respectful or having "class."), had to make a "jab" that a person using HOGMATS would have to do a clean out more often. Like every 2-4hrs. Then when Pat described the outter sluice boxes, he definitely mentioned the "miracle mat," and by name, mind you. What it sounds like is that Pat Keene was approached by HOGMAT for a business deal when it came to what Keene used in their sluice boxes for recovery. And something obviously didn't work out (usually anything from making or breaking contracts or with the number crunches/money percentages etc). And knowing Pat, he probably got to the point where he just told them that if he thought mats were so much better than screens carpets and metal Hungarian riffles, he would instead just use his own money and resources to create his own mats for his dredges. Besides, Pat did say that he did have testing done of many rubber mats or riffles. And according to Pat, the best was "miracle mat." Then again, Pat did say that it takes optimal conditions for "miracle mat" to work. In other words, that could be interpreted as, that Pat got the cheapest deal/contract through "miracle mat."..... Lol...... Just saying.......... Nevertheless, there is zero doubt that Keene dredges and their other equipment are really great quality and durability and do their intended jobs very well. Thanks Pat!

[@glennyee5607]

Fantastic job you boys did!!!

[@mittwinstead5441]

Leave it to Keene to build a top of the line dredge.

[@KeeneEngInc]

We can modify the dredge for diamonds. We have not tested it but we believe that the best option is to add one additional center float to the dredge that would add an additional 4 foot of floatation. The foats and frame would go from 14 feet long to 18 feet long. We would add a additional sluice length of 4 feet after the sump. The sump would remove the sand so the diamond riffel should really do a nice job.

[@dannycordes2517]

Talk about dropping the ball this dredge was purchased through Alaska mining last year Keen didn't get the dredge shipped on time left 6 people hanging we were all from out of state expenses added up quickly All we heard were excuses left scrambling trying to find gear

[@billcoley8520]

Ouch

[@dw4940]

Did they make it right wich y'all?

[@KeeneEngInc]

Perhaps not material but before we take it out in the field it is great to put it in the pool and work out some of the details. We already had a prototype working in the Philippines on some 200 to 500 mesh gold for over 4 months before we got to this stage.

[@anthonywill9672]

This new 6 looks awesome!!! Would be great if we could upgrade the 4 with some of these features. Another great product from Keene, good job guys and gals. Anthony from Alaska

[@hardrockuniversity7283]

That looks super sweet Mark. If we find a good river for it with our 4" I would really like to upgrade to that one! Keith from Tucson

[@hardrockuniversity7283]

Dredging in cold water, moving cobbles all day is quite unpleasantly like work. Darnn right there better be good gold in the sluice at the end of the day! :-)

[@hardrockuniversity7283]

Not necessarily. many people don't like getting their hands dirty while sweating. I don't have any openings at the moment, but might in the future. Where do you live? What kind of experience (if any) do you have moving dirt or rock? Keith

[@hardrockuniversity7283]

Interesting idea, but right now we have nothing running. Keep an eye on my videos and if you see us getting busy on something send another message. I like good help. keith- Hard Rock University

[@roberthorniacek4559]

I really really want one, I'm currently working on getting the funds together. might be another year or so but I'll get there.

[@johnmcskimming2480]

awesome. i need a bigger river 😉

[@markkeene7477]

The price for the 6220smax with the side boxes is 11750.00 the standard model less the side boxes sump etc 9750.00. You can get larger engines GX390 Hondas add about $1000.00

[@smb5655]

very interested in some advice for our plan to go to Nome Alaska .

[@dynomania]

Great value for all that engineering I would say.

[@billcoley8520]

Why three, will the center sluice not catch everything?

[@Adventure_Au]

Lol im glad im not the only one to test our dredge in the pool lol

[@roberthorniacek4559]

Hello Mark , I'm just wondering how many gallons per hr dus that pump run ?

[@KeeneEngInc]

Ok you asked each pump produces 250 GPM at 45 psi. 250 x 2 500 GPM 500 x .90 = 450.00 GPM through the hose. So if you can maintian even a 10% slurry. 44 gallons of material per minute. 44 x .1337 = 5.88 cubic feet per minute. 5.88 cubic feet x 60 = 176.4 cubic feet per hour 352 cubic feet per hour Around 13 yards per hour. If you can maintain a higher slurry then you can go higher. Calinfonia type dredge we are lucky if we can get a 5% slurrly all depends on the type of ground and the operator.

[@barrythacker7281]

did you find any gold

[@716Dan]

When are they going to be available

[@nomerc7627]

I would love to have a 4" like this! How much to make a 4" like this?

[@JasonAlexzander1q47]

About $8000

[@thebronxlifeisbeautiful1342]

how much does this dredge?

[@KeeneEngInc]

We found a small treasure change and bolts !!!!

[@StonemanRocks]

It would probably do one hell of a job to vacum your pool though!

[@Yalom26ct]

Is this only for gold or can it do diamonds as well

[@KeeneEngInc]

It is really built for gold not diamond

[@juliusmomolubass80]

I'm urgently interested in putting in an order for one of your 6220MAX 6" Super max Dredge by Keene Engineering. Could you please send me the quotation. More besides, if you have a 6" dredge that perform multiple functions such as for dredging gold and diamond, please send me the price quotation as soon as possible. Thank you.

[@KeeneEngInc]

The new series of super max should be available in a week or 2. Mid month

[@Pa.PatriotProspecting]

But you don't sell flood header boxes seperately... 🤔

[@chuckp3131]

Mark do you make a hopper for a 4 inch 3 stage with 1 fine gold sluice ? if so $ ? Thanks

[@KeeneEngInc]

We do make a 4" and 5" sump call for pricing

[@billyhess5263]

Soo what you're saying is, you learned from gold hog that changing up the riffles throughout the sluice catches more gold? I know they're competitors but I'm really surprised you're not using gold hog mats. Everyone I know with a Keene sluice, dredge, highbanker are all running gold hog mats because they work better and catch more gold. That's why those boys are killing the game.

[@KeeneEngInc]

The gold hog mats work well in a controlled environment. When you run unclassified material through them, the recovery drops signifigantly. When using a dredge, there are some issues such as clearing rock jams getting your tip stock on rocks etc. the hog mat does not perform well due to the variety of water flows and the stopping the starting of water flows. We prefer a more forgiving riffle such and carpets miners moss and a verity of riffle designs. I have played with a veratiy of hog mats and fond they did perform well in controlled conditions and steady water flows. A dredge is a whole different ball game. I also did not care for the hog mat once loaded with heavies is lost more gold than tha standard riffle did. A lot of people do not know what they are doing. I have spoken with Dozens of customers and that the same experience that I did.

[@billcoley8520]

Aren’t all the sluices that people are trying invent just to short. There isn’t enough time for the heavies to separate and fall

[@KeeneEngInc]

The Hungarian riffle design is and will always be one of the best riffle designs due to the fact, that is not just a trap but a rejuvenating riffle. Our Grandfather who was a Mining Engineer that graduated from the Colorado School of Mines and hung his hat on the Hungarian design due to the constant exchange, the heavier material will exchange with the lighter silicates that have a much lesser specific gravity utilizing the forces of the eddy currents. We have a good understanding of fluid dynamic principals throughout our combined experience of about 75 years, building mining equipment. There is a lot of hype of new rubber mats designs that mainly trap. These Mats perform ok but, without an exchange rate like the Hungarian design. The main problem with a trap is, black sands are mostly, 30 mesh size particles that have crystalline sharp edges, uneven fractures, and hexoctahedral splinters. Black sands will agitate and lock together like a puzzle. Gold has a specific weight of 19.3 and Magnetite is 5.4 but the gold that is almost four times heavier cannot penetrate the layer of black sands and skid the surface until the gold migrates out of the sluice. In order to get optimal recovery, it is necessary to classify to uniform size particles or as small as possible to achieve the best recovery possible. In the real world of mining, people run too much water, too much angle and don’t have enough surface area in the sluice. Another thing is if you do not utilize a classifier like our new sluices have, the larger rocks will create eddy currents and vortices around rocks and riffles and cause migrate gold or migrate or boil down the box and loose gold. Even a fluctuation in water flow can cause them to blow out, a slight side to side pitch can cause the gold to mover further down the box. The carpets, Miners moss, expanded metals, Hungarian riffle are very forgiving. Also with some of the rubber mats, they work well until they are loaded with black sands. I find them not to be as self-cleaning as conventional systems. I like to use the term, regenerative riffle such as miracle matting and is a very good example of a regenerative riffle design. Most of the fancy mats our there perform poorly once they are loaded and they are not forgiving and some of them are more of a gimmick without enough testing, The best way to catch your gold is two things. Slow the water down with screens and classify. That is what we like about the new sluice, the screens slow the material under the screen. The rifle is protected from the larger rocks allowing the rifle to do its job. We have all seen tons of new rifle designs and tested more than anyone knows. We also use tools such as computerized hydrodynamics flow simulations and good old fashion hard work and testing.

[@tonypadilla6404]

Qhat is the price of it ? Hope You can Answer . Thanks

[@joeh9149]

how much

[@KeeneEngInc]

The 6226smax sells for 20K not 2.5 Mil. 6220DSMAX 6" New Super Max Sump 2 x GX390 Honda w/263 Compressor $20,050.00. We can ocean freight or even air if needed If you would like us to provide a quote with freight we will need the information listed below. 1. Complete bill to name, address, phone and email. 2. Complete ship to name, address, phone and email. 3. We also would like a rough list of the items that you are requesting. Once we have your information loaded into our system we create a customer id for you. We will create the quote and we may make a few recommendations on spare parts as well. We will email you a quote for you to verify list of goods, ship-to and sold-to. Once you verify the list of goods we can work up a freight quote.

[@KeeneEngInc]

Mark Keene Keene Engineering Inc. 20201 Bahama Street Chatsworth Ca. 91311 Tele 818 993 0411 Fax [phone] Direct line 818 668 3419 Email. [e-mail] Skype markkeene1 Web. www.Keeneeng.com facebook.com/KeeneEngineering/ In order to provide a rough quote, we require the following information. A complete bill to name, address, phone fax numbers and email. Complete ship to name, address, phone fax numbers and email. We also would like a rough list of the items that you need. Once we have your information loaded into our system. We will email you a quote for you to verify a list of goods, ship-to, and sold-to. Once you verify the list of goods we can work up a freight quote. If you would like a quote it is best in you could email me.

[@user-kv1ex2yy3b]

Здраствуйте.Вы можете собрать пром прибор 8195d?

[@StonemanRocks]

Nice dredges! Probably wont be running and material through it while its in the pool however right? No didnt think so! Lol!

[@Leftoverau]

That screened grating riffle @ 9:50 does a nice job removing and protecting fine heavy material from large rocks. I made something like this to improve fine gold recovery on my Keene 4" 3 stage dredge. kzbin.info/www/bejne/qmOnnIeerbGema8 My version has this right after the undercurrent section that I run fully open. The drop zone in the first 6 inches of screened grating riffle will typically contain gold no larger than 30 to usually 50 mesh. If you are dredging fine gold with a lot of heavy black sands something like this is a must.

[@thorjor1]

Not too many "gold miners" have a pool in their backyard. Goes to show how to make gobs of cash in the "gold mining" arena. :)

[@johnnyllooddte3415]

wheels

[@dafrasier1]

large Air transport, stupid to call this portable, easy to carry. lie lie lie. needs a 4 wheel drive transporter. ha ha water proof.

[@roflbotfpv9168]

$10k

[@captaincrunch5878]

At 2.5 million dollars, & only sold in pairs...