Specialty Conveyor Belt

Flame Resistant for Underground Mining

Our steel cord conveyor belts are distinguished by their extremely high transmission of forces, long lengths and very high load-carrying capacities.
Our rubber engineers have develop a wide range of flame-resistant and anti-statics compound, in addition to satisfying underground requirement.

Safety Performance:

Item Standard
Electrical Resistance Electrical Resistance ≦ 3 x 108
Drum Friction Test Drum surface temperature. ≦ 325
Test pieces shall not show not sign of flame.  
Finger Burn Test
S = sec		 With Covers The self-extinguish average time of six samples (S) ≦ 3
The self-extinguish time of one sample (S) ≦ 10
Wihout Cover The self-extinguish average time of six samples (S) ≦ 5
The self-extinguish time of one sample (S) ≦ 15
Gallery Test Test result confort to (a) or (b) (a) Each Samples Undamaged Length (mm) ≧ 600
(b) Each Samples Undamaged Length (mm) ≧ 50
  Max. Average Temperature (°C) ≦ 140
  Damaged Length (mm) ≦ 1250

 

Thickness of Flame Resistant Rubber

 

Designation ST630 ST800 ST1000 ST1250 ST1600 ST1800 ST000 ST2500 ST2800
Top Cover ≧ 5.0 5.0 6.0 6.0 6.0 8.0 8.0 8.0 8.0
Bottom Cover ≧ 5.0 5.0 6.0 6.0 6.0 8.0 8.0 8.0 8.0
Designation ST3150 ST3500 ST4000 ST4500 ST5000 ST5400 ST6300 ST7000 ST7500
Top Cover ≧ 8.0 8.0 8.0 8.0 8.5 9.0 10.0 10.0 10.0
Bottom Cover ≧ 8.0 8.0 8.0 8.0 8.5 9.0 10.0 10.0 10.0

 

ST Fire Resistant Conveyor Belt
ST Fire Resistant Conveyor Belt

 

Standard of Flame Resistant

Finger Burn Test

Belt Property:
  • Tensile Strength: ≧ 15MPa
  • Elongation: ≧ 350%
  • Ageing Test: (70°C x 168h)
  • Tensile Strength Rate: ±25%
  • Elongation Strength Rate: ±25%
  • Din: ≦ 200mm3
Cord Rubber Compound Penetration:
  • The average steel belts of adhesion strength does not less than 85% after aging.
  • In cover rubber and adhesive layer, the average of adhesion strength does not less than 10 KN/M.
  • Containing fabric in flame resistant steel cord belts, the average of adhesion does not less than 8 KN/M in rubber cover and adhesion.
Rubber Permeability:
  • 100kPa pressure is applied to both edge in the test pieces, with 60 seconds, the difference does no more than 5kPa.
Dyanmic Adhesion of Steel Cord Belts:
  • 10,000 times cycle test, steel cord belts without any pull-out phenomenon.
Alcohol Burner Gas Burner
Gallery Test
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