Sloping Tube Coal Separator – KNS

Innovative solutions in coal preparationInnovative solutions in coal preparation

20092009

Sloping Tube Coal Separator – KNSPrinciples of Operation

General Equipment Layout: 1 — casing; 2 — rejects deck; 3 — concentrate deck; 4 — deck’s positioning mechanism; 5 — feed chute;6 — feed cone; 7 — de-watering elevator

General Equipment Layout: 1 — casing; 2 — rejects deck; 3 — concentrate deck; 4 — deck’s positioning mechanism; 5 — feed chute;6 — feed cone; 7 — de-watering elevator

Square shape tube casing hydraulically connected to the elevatorMain portion of process water is added at the bottom section while overflow from the top of separator casingRising velocity of the slurry is variable along the separator and controlled by appropriate positioning of the decksHigh turbulence zone is created in the feed zone to create water/solids separation media, similar to the jig operating principles Slurry velocity is in-tune to allow some particles with higher SG slide down against the rising stream toward the elevator, while lighter particles are evacuated from the separator following up overflow streamSloping angle is a key design parameter, individual for the type of coal and sizing distribution

Water

RejectsWater

ROM Coal

Concentrate

Sloping Tube Coal Separator – KNSHistory and Statistics

Technology was developed by Russian Institution of Solid Fuel and patented

Copyrights are handled by Scientific, Implementation and Design Enterprise “KENES”, Moscow, Russian Federation

First industrial installation in 1983 in Kemerovo region of Russia

By 2009 12 separators were installed and commissioned in Kemerovo region with combined production of 3Mtpa

Average feed 42 - 52% of ash

Average product quality 10 -12% of ash

Designed life cycle 10 years

Achieved life cycle 20 – 25 years

Top particles lump size – 150 mm

Minimum particles size – 0.2 mm

Efficient for all types of coal

Can be combined in 2 stages to produce 3 products

Can be used as a mobile plant

Can be installed underground

Effective for processing soaking types of hosting rocks and clays General view of the plant

General view of the plant

Sloping Tube Coal Separator – KNSAdvantages & Most Common Applications

Extraction of coal from the high ash sources:• Overburden

• Re-processing of previously stored waste stockpile

• Low grade mining blocks

• Thin seams

• Zones, contained geological faults

• Mine development and construction

• Tailing dams

Advantages:

Low TIC Low OpEx Low plant footprint Opportunities for u/g and mobile installation Ability to process soaking materials Opportunities for local manufacturing Broadly available spares and ancillaries More then 25 years of operating experience

Advantages:

Low TIC Low OpEx Low plant footprint Opportunities for u/g and mobile installation Ability to process soaking materials Opportunities for local manufacturing Broadly available spares and ancillaries More then 25 years of operating experience

Sloping Tube Coal Separator – KNSEquipment Specification

Parameters KNS – 88A KNS – 108A KNS - 138A KNS – 168A

Throughput, t/h 160 200 300 400

Size distribution, mm

0 - 150 0 - 150 0 - 150 0 - 150

Water consumption,

m³/h

3.5 – 5.0 3.5 – 5.0 3.5 – 5.0 3.5 – 5.0

Dimension, mm:LengthWidthHeights

5470

800

800

5470

1000

800

5470

1300

800

5470

1600

800

Weight, t 3.6 3.9 4.2 5.0

Sloping Tube Coal Separator – KNS Typical Plant Layout

Sloping Tube Coal Separator – KNS Possible Plant Layout Arrangements

“Offset Type” of Product Discharge “Offset Type” of Product Discharge

Sloping Tube Coal Separator – KNSPossible Plant Layout Arrangements

2 x Stages Arrangement 2 x Stages Arrangement

Discharge of products on the same side

Discharge of products on the same side