Ball mill VS wet pan mill in gold gravity separation
To get the real gold, there are three most popular
methods:cyanidation, gold gravity separation and amalgamation. Each
method features its advantages and disadvantages, and they are
suitable for different miners with different capital ability and
for local environment situation.
For those big CIL plants or individual miners with enough financial
ability, ball mill is the most ideal equipment because of its large
capacity, easy operation and fine output size which can be as fine
as 200 to 325 mesh. Usually when the ball mill used, the ore slurry
classifying equipment will be equipment: spiral classifier or
hydrocyclone. The point is that if the ball mill is small model,
spiral classifier is prefered as its cost is low. If the ball mill
is big model, hydrocyclone is necessary. The small ball mill
working with spiral classifier is as follows:
wet pan mill specification
| Model | Specification | Input size
(mm) | Capacity
(t/h) | Powder
(kw) | Weight
(t) |
| 1600 | 1600×350×200×460±20mm | | 1-2 | 30 | 13.5 |
| 1500 | 1500×300×150×420±20mm | | 0.8-1.5 | 22 | 11.3 |
| 1400 | 1400×260×150×350±20mm | <25mm | 0.5-0.8 | 18.5 | 8.5 |
| 1200 | 1200×180×120×250±20mm | | 0.25-0.5 | 7.5 | 5.5 |
| 1100 | 1100×160×120×250±20mm | | 0.15-0.25 | 5.5 | 4.5 |
| 1000 | 1000×180×120×250±20mm | | 0.15-0.2 | 5.5 | 4.3 |
Besides ball mill, there is another ore dressing grinding mill
machine, that is wet pan mill, also called chilean mill. Wet pan
mill is the most popular grinding mill for gold ore gravity
separation and amalgamation in Africa and South America for its
lower cost than ball mill and easy operation. The following is the
flow chart drawing in which wet pan mill is used in gravity
separation. The working procedures is crushing→grinding→knelson
centrifugal concentrator selection(to get the big size free
gold)→shaking table(to select the fine gold from the ore tailling).
Actually in small gold gravity plant, ball mill can also be used to
replace the wet pan mil. And it can achieve same grinding effect
with the wet pan mill, the following is the flow chart of ball mill
in gold gravity plant.
In gold gravity separation plant, whether the miner use ball mill
or wet pan mill, he can only get the gold concentrate, after that
he can adopt amalgamation or cyanidation to get the pure gold,
which is another topic and we do not extend it in this article.
To conclude, in gold gravity separation plant, ball mill and wet
pan mill are both accetable. The difference is that ball mill is
more suitable for big mining companies or individual miners with
enough capaital, and wet pan mill is the choice of small miners who
want get gold quickly with lowest price.
For any techncial questions about the gold gravity separation
plant, pls feel free to contact by Whatsapp: +86 18221130967.
