Table 4.

Results of equations describing the relationships between the working parameters of the mill and the parameters describing the PSD of micronized OH.

Dependent Variable	Equation Parameter	Standardized Coefficient of Regression	Standard Error	Coefficient of Regression	Standard Error	t (213)	p-Value	R 2	Model’s Error
d10	Intercept	-	-	8.155	0.402	20.262	0.00001	0.722	0.740
	vd *	−0.846	0.0361	−0.00144	0.00006	−23.420	0.00001
	vk	−0.077	0.0361	−0.00026	0.00012	−2.118	0.03534
d50	Intercept	-	-	79.94267	4.76189	16.788	0.00001	0.785	8.79
	vd	−0.822	0.038	−0.01579	0.00073	−21.718	0.00001
	vk	−0.139	0.038	−0.00532	0.00145	−3.677	0.00001
d90	Intercept	-	-	561.98	17.08	32.91	0.00001	0.784	31.5
	vd	−0.716	0.03178	−0.0587	0.00261	−22.52	0.00001
	vk	−0.522	0.03178	−0.0852	0.00519	−16.42	0.00001
Span	Intercept	-	-	9.5329	0.38747	24.60	0.00001	0.577	0.715
	vd	−0.6143	0.0445	−0.0016	0.00012	−13.79	0.00001
	vk	0.4471	0.0445	0.0006	0.00006	10.02	0.00001

* v_d—speed of the disc, v_k—speed of the classifier.