Nonlinear Determination Method for Self-Heating Initiative Temperature of Sulfide Ores

Figure 9

Hurst exponent calculation results of ore samples in some periods: (a) 0∼147 min; (b) 150∼297 min; (c) 300∼447 min; (d) 450∼597 min; (e) 600∼747 min; (f) 750∼897 min.

(a)

(b)

(c)

(d)

(e)

(f)