Industrial Test 2 for Separation of Arsenic from Gold-containing Flotation Concentrate by Vacuum Pyrolysis

The reason for the high arsenic content in the soot (see Table 2 ) is that the temperature of the hot dust collector is not enough (only 300 °C ). If the temperature of the dust collector is raised to 400 °C The amount of arsenic in soot can be reduced. These can then be combined in soot and slag - sent from the extraction of gold.

Table 2   Ingredients % of concentrate vacuum processing products

product

As

S

Fe

SiO 2

Al 2 O 3

CaO

MgO

C

Concentrate

6.20

15.10

16.60

24.70

8.80

0.40

0.40

18.60

Slag

0.20

14.20

19.20

29.10

-

0.50

0.50

22.50

Condensate

61.40

20.60

0.30

6.90

-

-

-

-

Smoke

7.30

12.50

13.60

23.70

6.90

-

-

-

During the vacuum heat treatment, 91.8~92% of the gold is transferred into the slag, 7.8~8% of the gold is transferred to the soot, and about 5% of the gold enters the condensate. About 6% of the silver lost with the condensate loss and balance error . Test electricity consumption of 300 to 350 kilowatts. Hr / ton of ore.

Based on the results obtained, the raw data of the industrial vibrating vacuum device design was compiled to separate arsenic from the gold-bearing concentrate by vacuum pyrolysis.

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Power source

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single phase 220V 50Hz

Heating powe

11KW

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Driven mode

pneumatic

pneumatic

Air source

0.5~0.8 MPa â‰¥0.9m3/min

 0.5~0.8 MPa â‰¥0.9m³/min

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2~12 kg/min

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11MPA

11MPA

AB material output ratio

1:1

1:1

Spray gun

1 Set

1 Set

Feeding pump

2 sets

2 sets

Heating hose

15meters

15meters

Gun connection pipe

2pieces

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Feed delivery pipe

2pieces

2pieces

Feeding pump

2 sets

2 sets

Heating hose

15meters

15meters

Gun connection pipe

2pieces

2pieces

Feed delivery pipe

2pieces

2pieces

pneumatic  pipe

5meters

5meters

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1set

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850mm X 1000mm X 1300mm

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136KG

pneumatic  pipe

5meters

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750mm X 560mm X 1130mm

Machine weight

116KG

109KG

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CNMC-H

Power source

single phase 220V 50Hz

 3-phase 4-wires 380V 50Hz

Heating powe

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9.5KW

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pneumatic

pneumatic

Air source

 0.5~0.8 MPa â‰¥0.9m³/min

 0.5~0.8 MPa â‰¥0.9m³/min

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2~12 kg/min

2~12 kg/min

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11MPA

11MPA

AB material output ratio

1:1

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Spray gun

1 Set

1 Set

Feeding pump

2 sets

2 sets

Heating hose

15meters

15meters

Gun connection pipe

2pieces

2pieces

Feed delivery pipe

2pieces

2pieces

pneumatic  pipe

5meters

5meters

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1set

1set

Packing size

760*550*1130

 760mm X 560mm X 1130mm

Machine weight

109KG

109KG

Model

CNMC52

CNMC56

Power source

 3-phase 4-wires 380V 50Hz

 3-phase 4-wires 380V 50Hz

Heating powe

18KW

20KW

Driven mode

pneumatic

pneumatic

Air source

 0.5~0.8 MPa â‰¥1.3m³/min

 0.5~0.8 MPa â‰¥1.3m³/min

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 2~12 kg/min

 2~12 kg/min

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22MPA

24MPA

AB material output ratio

1:1

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Spray gun

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