Heat resistant conveyor belt

Heat Resistant Conveyor Belt

heat resistant belts

Heat resistant conveyor belt

The carcass of the product selects cotton canvas or EP canvas as skeleton material. High temp conveyor belt widely used in industries of metallurgy, cement, coking, steel, and etc.

The Heat resistant Conveyor Belts is made of the multilayer rubber cotton canvas ‘polyester cotton’ covered with the high temperature or heat resistant rubbers, which are bonded through high temperature vulcanization, it is applicable to conveying of the coke, cement, clinker and hot casting etc.

1, The heat resistance conveyor belt’s specification shall be identical with that of the conventional conveyor belt.
2,The high temperature conveyor belt shall be in accordance with HG2297-92.
3,The high temp conveyor belts contains three types.

Technical Data

Heat Resistant Belt Technical Data Sheet

The Heat resistant Conveyor Belt physical property of the cover rubber after heat test shall conform to the values specified in the table.It can be divided into four types according to working temperature range:

Technical Data

Item Class
T1 T2 T3 T4
the range of allowable change
Hardness Difference before and after aging(IRHD) 20 20 ±20 ±20
Maximum value after aging(IRHD) 85 85 85 85
Tensile Strength Change rate of properties(%) -25 -30 -40 -40
Minimum value after aging(MPa) 12 10 5 5
Elongation at break Change rate after aging(%) -50 -50 -55 -55
Minimum value after aging(%) 200 200 180 180

Type I; it is able to resist the test temperature of no more than 100ºC, the max. short-time operating temperature is 150ºC,the symbol is T1.
Type II; it is able to resist the test temperature of no more than 125ºC, the max. short-time operating temperature is 170ºC,the symbol is T2.
Type III; it is able to resist the test temperature of no more than 150ºC, the max. short-time operating temperature is 200ºC,the symbol is T3.
Type IV; it is able to resist the test temperature of no more than 175ºC, the max. short-time operating temperature is 230ºC,the symbol is T4.

MATERIALS AND BELT SURFACE TEMPERATURES

Cover Type Standard/ Grade Minimum
Tensile Strength		 Minimum
Elongation at
Break (%)		 Maximum
Swelling in
Fuel B (%)		 Reference Material
High Oil Resistant AR-HiOR 15 350 35 Convey materials like Crude
petroleum, oil coated products,
oil coated products, etc.
Oil Resistant AR-OR
IS-OR, AS-Z, DIN-G		 12.5 350 70 Materials like light oil coated sand,
food grains, oil-seeds, etc.
Moderate Oil
Resistant		 AR-MOR 12.5 350 110 Materials like oil seeds, wood chips,
vegetable oil coated products, etc.
Oil and Heat
Resistant		 AR-SOR-HR 12 300 70 Heat resistant up to 125°C, used for
hot asphalt handling
High Heat and
Oil Resistant		 AR-SHR-SOR 12 300 55 Moderate heat resistant up to 100°C,
for handling tar coated material
Oil Resistant and
High Abrasion		 AR-OR-HAR 12 300 60 High wear resistant meant for
Oil, Heat and Fire
Resistant		 AR-OR-HR-FR 12 300 60

Heat resistant belts are best suited for conveying product that is over 60º (140º F). The surface temperature of heat resistant belting varies with the material type, belt speed, loading rate and size. To select the proper heat resistant belting, consider not only the material temperature to be conveyed but the surface temperature of the belt as well.

Application

Application

Heat-Resistant Conveyor Belt

Application
High temp rubber conveyer belt is mainly used to transport high temperature materials, such as sintering ore.hot coke, clinker, hat casting, etc.

Structure
EPDM or SBR as the covering layer rubber, and high modulus low shrinkage polyester or nylon canvas as the strong casing ply. This kind of belt can use the heat resistant woven glass fabric between the cover rubber and the layers to improve the working life of the belt.

Advantage
1. EP/NN /CC/ Steel cord as framework material;
2. Vulcanization molding;
3. Large slope transportation, widely used in bulk material;
4. Saves space, since conveyance at inclines of up to 90° is possible.

Cover Rubber Properties

Cover Rubber Properties

1.The Heat Resistant Conveyor Belt physical property of the cover rubber after heat test shall conform to the values specified in the table.

Item Type
type I type II type III
variable range
Hardness Difference before and after ageing (IRHD) ±20
Max. Value after ageing (IRHD) 85
Tensile strength variable rate in performance ≤ 25 30 40
Min. value after ageing Mpa 12 10 5
Rate of elongation at break variable rate in performance% ≤ 50 55
Min. value after ageing 200 180

2.The heat resistance conveyor belt between of ply adhesion strength :

Item Interlayer of cloth Cover layer and cloth interlayer
Thickness of the cover layer≤1.5mm Thickness of the cover layer>1.5mm
The average value of the longitudinal specimen shall be no less than 3 2.2 2.6
The peak value of the longitudinal specimen 2 1.6 2

3.The heat resistance conveyor belt abrasion resistance of the cover rubber

Type Abrasive wear
Item level type I type II type III
First quality 0.8 1 1
accepts 1 1.2 1.2
High-Temperature-Polyester-Rubber-Heat-Resistant-Conveyor-Belt-for-Steel-Mining