Research on Coal and Rock Type Recognition Based on Mechanical Vision

Table 5

Time for identify tests.

Type	Time for the first test(s)	Time for the second test(s)
Granite	2.35	2.45
Sandstone	2.38	2.45
Quartz sandstone	2.45	2.46
Diabase	2.35	2.39
Shale	2.36	2.47
Quartzite	2.46	2.38
Limestone	2.35	2.36
Anorthosite	2.48	2.41
Anthracite	2.45	2.35
Coking coal	2.46	2.35
Fat coal	2.45	2.35
Gas fat coal	2.47	2.36
Gas coal	2.25	2.46
Lignitous coal	2.35	2.34
Lignitous coal gangue	2.41	2.35
Bituminous coal gangue	2.52	2.60