FLAME RETARDANT STEEL CORD CONVEYOR BELTS FOR COALMINE
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1.Application
Fire retardant conveyor belts used in coal mines are suitable for the long distance, high intensity, heavy load, great slope degree conveying of materials in the coal mines.
2.Features
●High tensile strength: The belts are suitable for large span, long distance transportation of materials.
●Small elongation in use: The belts need only a very short take-up stroke distance.
●Small diameter of drive pulley: The belt body has a layer of longitudinally arranged steel cords as its skeleton, and thus is resistant to flex fatigue.Therefore, drive pulley of smaller diameter can be used to make the equipment smaller.
●High adhesion between rubber and steel cord: The steel cords are coated with zinc on their surface, and also the rubber used has the property of good adhesionwith steel cords.Therefore, the rubber is tightly adhered to the steel cords and is resistant to shock and difficult to drop, so the rubber belts are long in life.
●Even tension of steel cords: Out of our advanced techniques in manufacturing. the steel cords are very evenly arranged and have the same tension, so the belts are well balanced in running and difficult to run away.
●Good troughability: As the belt body has no transverse skeleton, it is easy to form a deep trough, so the belts can load more materials and prevent thematerials from escaping.
●Inspection of the belt with X-rays:Users can use X-rays to inspect damages of the skeleton steel cords on the conveyor machines to prevent accidents from happening.
3.Standard Specification
| Type | Belt width (mm) | ||||||||||||
| 800 | 1000 | 1200 | 1400 | 1600 | 1800 | 2000 | 2200 | 2400 | 2600 | 2800 | 3000 | 3200 | |
| ST/S630 | 75 | 95 | 113 | 133 | 151 | 171 | 196 | 216 | 236 | 256 | 276 | 296 | 316 |
| ST/S800 | 75 | 95 | 113 | 133 | 151 | 171 | 196 | 216 | 236 | 256 | 276 | 296 | 316 |
| ST/S1000 | 63 | 79 | 94 | 111 | 126 | 143 | 159 | 176 | 193 | 209 | 230 | 247 | 264 |
| ST/S1250 | 63 | 79 | 94 | 111 | 126 | 143 | 159 | 176 | 193 | 209 | 230 | 247 | 264 |
| ST/S1600 | 63 | 79 | 94 | 111 | 126 | 143 | 159 | 176 | 193 | 209 | 230 | 247 | 264 |
| ST/S2000 | 63 | 79 | 94 | 111 | 126 | 143 | 159 | 176 | 193 | 209 | 230 | 247 | 264 |
| ST/S2500 | 50 | 64 | 76 | 89 | 101 | 114 | 128 | 141 | 155 | 168 | 184 | 198 | 211 |
| ST/S2800 | 50 | 64 | 76 | 89 | 101 | 114 | 128 | 141 | 155 | 168 | 184 | 198 | 211 |
| ST/S3150 | 50 | 64 | 76 | 89 | 101 | 114 | 128 | 141 | 155 | 168 | 184 | 198 | 211 |
| ST/S3500 | 50 | 64 | 77 | 90 | 104 | 117 | 130 | 144 | 157 | 170 | 194 | 198 | 211 |
| ST/S4000 | - | 64 | 77 | 90 | 104 | 117 | 130 | 144 | 157 | 170 | 194 | 198 | 211 |
| ST/S4500 | - | 59 | 71 | 84 | 96 | 109 | 121 | 134 | 146 | 159 | 171 | 185 | 198 |
| ST/S5000 | - | 55 | 66 | 78 | 90 | 102 | 113 | 125 | 137 | 149 | 161 | 174 | 186 |
| ST/S5400 | - | 55 | 66 | 78 | 90 | 102 | 113 | 125 | 137 | 149 | 161 | 174 | 186 |
| ST/S6300 | - | 48 | 58 | 68 | 78 | 88 | 98 | 108 | 118 | 128 | 138 | 148 | 158 |
| ST/S7000 | - | 49 | 59 | 69 | 80 | 90 | 101 | 111 | 121 | 131 | 142 | 152 | 162 |
| ST/S7500 | - | 45 | 54 | 63 | 72 | 82 | 91 | 100 | 109 | 119 | 129 | 138 | 147 |
4.Cover property and grade
●Tensile strength:≥15Mpa
●Elongation at brea:≥350%
●After aging (70℃x168h):
1.Change rate of tensile strength:+25%--25%
2.Change rate of elongation at break:+25%--25%
●Abrasion:≤200mm³
5.Safety property
| ltem | Index | ||
| Anti-static property | Average value of surface resistance in up-down surfaces of belts | ≤3x10RΩ | |
| Drum friction | Surface temperature of drum | ≤325℃ | |
| Any test piece shall not show any signs of flame or glow | |||
| Burning on spirit burner (Flame or glow) |
Burning with cover rubber |
Average duration of flame for six test pieces | ≤3S |
| Duration of flame for any individual test piece | ≤10S | ||
| Burning without cover rubber |
Average duration of flame for six test pieces | ≤5S | |
| Duration of flame for any individual test piece | ≤15S | ||
| Burning on propane burner | Length that is completely undamaged by flame | ≥600mm | |
Other technical indexes in accordance with MT668-2008
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FLAME RETARDANT STEEL CORD CONVEYOR BELTS FOR COALMINE
long distance
high intensity
heavy load
great slope degree conveying
Contact Us
Add:No. 12, Hexin Road, Sanhe Town, Tiantai County, Taizhou, Zhejiang, China
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