Gravity Separation & Concentration Methods

Gravity Separation & Concentration Methods

  • To participate in the 911Metallurgist Forums, be sure to JOINLOGIN
  • Use Add New Topic to ask a New Question/Discussion about Gravity Separation/Concentration.
  • OR Select a Topic that Interests you.
  • Use Add Reply = to Reply/Participate in a Topic/Discussion (most frequent).
    Using Add Reply allows you to Attach Images or PDF files and provide a more complete input.
  • Use Add Comment = to comment on someone else’s Reply in an already active Topic/Discussion.

32
REPLIES
8157
VIEWS
Started by Jean Rasczak
I need a Rotary Pan (De Beers Pan) for diamond recovery. Used or new will do. I was told before that the Rotary pan does not work in Brazil, apparently they prefer Jigs in Brazil. Can anybody comment on this as to why, maybe? I am very familiar with...
R
Last replied to by Rudes
Hi All,   kindly can anybody possibly help with drawings for a 10-ft and 16-ft Rotary Pan ?   Thanks !
11
REPLIES
1707
VIEWS
Started by Zander Barcalow
I'm looking for methods of industrial processing of titanium ores which follows the initial "gravity separations".
h
Last replied to by yes
how can i increase grade of titanium (ilmenite) from iron?i mean above  65 percent with flotation
21
REPLIES
4252
VIEWS
Started by
I am mining in Ghana and wonder which type of gold washing plant are better: rotary scrubber/ trommel or drum scrubber/ trommel concentrator.
Last replied to by David
Gold Wash Plants of all sizes & budgets https://www.911metallurgist.com/equipment/alluvial/gold-wash-plants/
10
REPLIES
2434
VIEWS
Started by JohnnyD
Do we finally have a viable efficiency low-cost "Cheap" Gold Recovery Process that most can afford? Could Gravity + Intensive Leach help small mining Companies or individual process Gold in more cost effective manner? Some study in stopping the ille...
T
Last replied to by Darkchild101
Hi I would be interested to know if there are any new developments in this area/research. We plan on recovering gold from tailings in Zimbabwe and are faced with shortage of capital. Is there any way...
14
REPLIES
1196
VIEWS
Started by
What method would be best to use for the washing of coal tailings having ash of ranges from 45-54um
Last replied to by Treve Mildren
The old Mozley MGS certainly wasn't worth consideration due to its inability to pull sufficient material to concentrate. Development work by Gravity Mining ltd in conjunction with the Camborne School ...
11
REPLIES
2810
VIEWS
Started by
I'm working on beneficiation of barium sulfate from low grade barite ore (64.2% BaSO4) in presence of 28.01 SiO2 and 4.8 PbO.  4.8% PbO with 28% SiO2. We want to achieve min 4.2 S.G with less than 250 ppm Lead. (OCMA Standard) Does anyone have any ...
Last replied to by David
See https://www.911metallurgist.com/blog/barite-beneficiation-process-plant-flowsheet
3
REPLIES
2077
VIEWS
Started by Bob Mathias
The video shows one that was shown last year at electra mining. It gives some idea on how it works I just wonder how this can be applied to different mineral ores? What is the discriminatory edge with this method? Meaning how different must the dens...
Last replied to by
Rock of 3.0 g/cc can be separated from rock of 2.0 g/cc. Separating 3 cm2 rock from 4 cm2 rock would be a classification process using screens not spirals. https://www.youtube.com/watch?v=O64USKI_UDs
3
REPLIES
1128
VIEWS
Started by
Might is be for base metal recovery by flotation or gold by leaching and flotation, a Mobile and Modular Process Plants only use to be a thing of the pass... no more. While gold and other placer operations (diamonds) are the big users in numbers of ...
Last replied to by
The old Yuba Manufacturing company which operated from the late 1890's to about 1960 built many floating dredges that also include a gravity circuit on them. I used to have a picture showing four or f...
3
REPLIES
1659
VIEWS
Started by Zander Barcalow
Can any body tell me cut- off grade of Tantalum in alluvial deposit for economical mining &processing. Tantalum present in alluvial deposit in the form of Coltan.
Last replied to by
Cut-offs around 150-200 pp is an industry standard to look out for, below this, you may be wasting your time. The above comments are all true. On alluvial/eluvial - overburden depth is critical. On ha...
4
REPLIES
1134
VIEWS
Started by Marshal Meru
The performance of Churn Drills on wet alluvial merits some discussion as I agree that Churn Drills are EXCELLENT on DRY-ISH ground (terraces, small creeks, paleoplacers etc) but USELESS on WET ground such as floodplains or below water tables. Possi...
Last replied to by Zander Barcalow
Whenever people suggest applying factors to assay numbers they are implicitly admitting they have sampling problems. When you use holes drilled by different machines, each producing its distinctive di...
20
REPLIES
1277
VIEWS
Started by
Could a Dredging Bucket be used for alluvial mining? I suppose it is an accessory that replaces a bucket of an excavator. Cutter head and slurry pump moved by the hydraulic. Has anyone known or worked it?
Last replied to by
Glad to learn the craft of dredging has yet to be classified as an extinct procedure of interest to archaeologists.
16
REPLIES
1471
VIEWS
Started by
Knowing that gold particles do not exceed 0.25mm and with the 1/32'' portion ranging between 15-20% and absence of clays.  Would it not pay off to classify further before feeding the jigs or centrifuges, say down to 1/32''?   If so are multi-deck...
Last replied to by Jean Rasczak
Agree with above comments. Classification is a method of concentration and it can be overkill at some point. Bench scale or pilot scale testing is required. The full range particle size analysis is re...
16
REPLIES
2036
VIEWS
Started by
We operate an InLine Leach Reactor (ILR) by Gekko used to leach gravity gold. The problem we have is to estimate the Au recovered using Solution assays & tons from volume measurements. The variance in gold metal we are missing is always around -...
Last replied to by
What are the best automatic sample cutters for the solution streams. I think the problem with solution accountability has been identified. it was due to interference with Fe ions with the use of AAS ...
4
REPLIES
1919
VIEWS
Started by JohnnyD
Using gravity concentrators like spirals or jigs, how is the water distribution estimated or calculated between Concentrate and Reject/tailings? During preparation of the Flow sheet from lab results we came across water balance of the gravity concen...
Last replied to by
Spirals will cut the water split to the reject such that extra water is often needed to carry the heavy concentrate to the collection point.Jig water split is a matter of hutch water addition. As the ...
3
REPLIES
1087
VIEWS
Started by Victor Bergman
I know of a placer gold mine with an average grade is 0.3 ppm (0.3 gram/tonne) and the reserve is 30 million tons. The mine located in remote area and we do not have sufficient water although we send a sample for Knelson company but the max recove...
Last replied to by JohnnyD
First to screen and reduce the weight for the value mineral, then is available a air classification for the -2 mm - 1 mm.(I do not know for 700tons/hr capacity, may be) Then Knelson of course many uni...
5
REPLIES
1152
VIEWS
Started by JohnnyD
When is a Heavy Media separation system applied for processing of Lead & Zinc ore? Generally processing of which type of lead and zinc ore is practical using heavy media? Which design criteria should be considered?
Last replied to by David
Nyrstar in Tennessee has 2 processing plants using Heavy Media Separation on a 2.6% Zn sphalerite hosted in dolomite. 60% of the mass reports to tails of 0.2% Zn while the flotation feed created by t...
2
REPLIES
2779
VIEWS
Started by Victor Bergman
How to calculate the process water and Hutch water for Iron ore processing on Jigs? How water is redistributed in hutch and process water. If there is any thumb rule to calculate hutch water for 4m and 2.5m jig area. How much water is going out throu...
Last replied to by David

Please join and login to participate and leave a comment.