Merril-Crow Processing System

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Merril-Crow Processing System

Process the gold & silver ore concentrates or pregnant solution with low content of Arsenic ( As), Copper (Cu), Carbon ( C ) and Antimony ( Sb) into gold and silver powder.

Gold & silver flotation concentrates regrinding and CIL leaching and smelts it into gold & silver mud to replace the desorption & electrolytic system.

Heap leaching, CIL or CIP leaching and vat leaching pregnant solution processing into gold & silver mud to replace the desorption & electrolytic system.

Features and advantages

(1)Lower investment compare with the traditional system which need a lot of civil work construction.

(2)Fast delivery by saving a lot time on the installation.

(3)Easily maintenance and operation.

(4)Modular design and easy adjustment according to the customer’s requirements.

(5)Complete set in the container makes transport much easier.

(6)One-stop refinery system to help you get high purity gold silver.


(1)Pregnant filtering process:

The pregnant solution from leaching section should be processed by sedimentation and clarification in the setting pond first. Then use the pump feed into our bags type filter to do the filtering process two times and then send to the pregnant solution tank.

(2)Deoxidation process:

The pregnant solution will be sucked into the deoxidation tower by vacuum force from the pregnant solution tank. During the spraying from top to the bottom of the deoxidation tower, the pregnant solution will be deoxidized by the vacuum spraying pump. The pregnant solution after deoxygenation will be reserved at the bottom of the deoxidation tower.

(3)Zinc powder replacement reaction:

The pregnant solution will be pumped out and mixed with the zinc powder and lead acetate. The gold and silver will be replaced out by zinc powder as slurry mixed with water. Then the pregnant solution after replacement reaction will be shot to the filter press.

(4)Solid-liquid separation:

The pregnant solution will be processed by the filter press to separate the solid and liquid. The solid contains gold and silver will be collected from the filter cloth and send to the smelting into gold-silver alloy or the gold-silver separation and purification system to do deep processing. The barren solution will be sent to the barren solution tank for the recycle stage.

Item

Speicfication

Unit

Remark

Model

MCPS20

Complete system from pregnant solution pump to gold & silver mud press filter

Capacity

20

m³ per batch

Pregnant solution

Processing time

24

hours per circle

Complete processing circle

Density of CN

≥0.03-0.05

%

CN - content in the pregnant solution

Ph Value

≥10.5

%

If it is too low, you should add the caustic soda to adjust it to this value

Oxygen content

0.05

mg/l

After deoxidation process

Gold content

0.03

g/m 3

In barren solution

Merrill-Crow processing system

1x40HQ

set

Complete setted in one set 40 feet HC container

Name

Model

Power (Kw)

Qty

Unit

Container

40 HQ

1

set

Deoxidation tower

φ800×2300-2

1

set

Flow gauge of deoxidation tower

LBZ-100

1

set

Liquid meter

L=600

1

set

Vacuum group

RPP-160

5.5kw

1

set

Vacuum group standby pump

Q=45m³/h,H=30m

5.5kw

1

set

Air compressor

V-0.36/0.7

3kw

1

set

Pregnant solution filter pump

Q=30m³/h,H=30m

7.5KW

2

set

Press filter

BAJ12/630

2

set

Pregnant liquid filter

JMF-M4

2

set

Zinc powder dosing machine

lx-30

0.75kw

1

set

Water plate

1000×1500×300

2

set

Power distribution plate

GGD-400

1

set

LED light

100w

100w

5

pcs.

Frequency Converter

510-11ROG-4-4-485-Z

1

set

Steel pipe

φ76

Steel pipe

φ108×4

Bottom steel plate

4mm

30

Ball valve

DN20

5

pcs.

Membrane valve

DN100

1

pcs.

PPR wind pipe

DN25

Stainless steel ball valve

DN20

4

pcs.

Submerged pump

Q=25m³/h,H=30m

2

set

Other cable

Other cable, valve and pipe

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