Table 5 Inhibitory effect of three explosion suppressants on minimum ignition temperature of coal dust clouds.
p (%) | Minimum ignition temperature (K) | ||
|---|---|---|---|
Al(OH)3 + coal dust | KH2PO4 + coal dust | NH4H2PO4 + coal dust | |
0 | 983 | 983 | 983 |
5 | 993 | 1003 | 1023 |
10 | 1023 | 1033 | 1053 |
15 | 1033 | 1053 | 1093 |
20 | 1043 | 1083 | 1123 |
25 | 1053 | 1093 | 1163 |
30 | 1073 | 1113 | 1193 |
35 | 1093 | 1143 | 1233 |
40 | 1103 | 1173 | 1273 |
45 | 1133 | 1193 | – |
50 | 1153 | 1233 | – |
55 | 1183 | 1273 | – |
60 | 1213 | – | – |
