Sungda Conveyor Belt Co.,Ltd.

Mine fires are one of the major disasters in coal mines. Mine fires not only cause huge material losses in the mines, but are also the main cause of casualties among miners. Fire can produce a lot of smoke. The main component of smoke in fires is carbon ash, and there are a large number of toxic gases, such as carbon monoxide, carbon dioxide and hydrogen sulfide, which are extremely harmful to the human body.

Mine fires are one of the major disasters in coal mines. Mine fires not only cause huge material losses in the mines, but are also the main cause of casualties among miners. Fire can produce a lot of smoke. The main component of smoke in fires is carbon ash, and there are a large number of toxic gases, such as carbon monoxide, carbon dioxide and hydrogen sulfide, which are extremely harmful to the human body. Statistics show that more than 85% of deaths in fires are caused by smoke, most of which were inhaled and stunned by smoke and toxic gases. Therefore, the combustion characteristics of the main combustibles in the ground can be studied. On the one hand, low-toxic materials can be selected according to underground needs. At the same time, according to the combustion properties of various materials, targeted measures can be taken during a fire to facilitate underground disaster relief.

To this end, Sungda Rubber conveyor belt Co., Ltd. uses a cone calorimeter to test the combustion characteristics of steel cord core flame resistance conveyor belts, nylon conveyor belts, firewood and coal. The following conclusions were reached: The combustion test of coal, pine, NN200 nylon conveyor belt and 800S rubber full-core flame resistance conveyor belt was conducted under the condition of radiant energy of 50 kW / m2, and the transportation capacity of coal, pine wood and nylon was obtained. Main combustion performance parameters of belts and rubber core flame resistance conveyor belts.

1) Comprehensive analysis of heat release performance, CO production, released smoke and the effects of smoke, nylon is the most harmful when exposed to fire. It is worth noting that the total amount and concentration of CO released by the rubber core flame resistance belt during the combustion process are the largest, and at the same time, coal releases a large amount of CO during the combustion process.

2) In terms of fire resistance, the ignition time of coal samples is slightly shorter, while the ignition time of nylon conveyor belt, wood and rubber core flame resistance rubber conveyor belt is only one second apart, and the three materials of fire resistance are not different. Big.

3) Comprehensive test results show that the four types of nylon conveyor belts are the most harmful after burning, the rubber core flame resistance belts are the second most harmful, and the woods are the least harmful after burning.

4) From the heat release rate of two conveyor belts, the CO concentration during the combustion process and the smoke generation rate chart, the above three parameters reached their peak values ​​in a short period of time. This should be caused during the disaster relief and should be noted.