Synthesis and Characterization of Rutile Pigments with Cr and Nb

Table 5

An effect of calcination temperature on particle size distribution of pigments Ti_0.85Cr_0.05Nb_0.10.

(°C)	Anatase TiO2			Hydrated anatase paste
	(μm)	(μm)	(μm)	(μm)	(μm)	(μm)
850	0.28	0.81	17.37	0.48	1.33	14.86
900	0.30	0.84	21.58	0.51	1.47	25.19
950	0.35	0.95	19.91	0.54	1.63	24.50
1000	0.69	2.03	26.50	0.90	2.42	25.19
1050	0.74	2.04	24.49	1.07	2.77	33.27
1100	0.82	2.48	25.66	1.38	3.17	8.78
1150	0.88	3.14	30.14	1.46	3.37	11.81
(°C)	TiOSO4·2H2O			Hydrated Na2Ti4O9 paste
	(μm)	(μm)	(μm)	(μm)	(μm)	(μm)
850	0.36	0.85	12.47	0.53	2.95	26.54
900	0.42	1.05	28.99	0.60	3.00	24.66
950	0.43	1.17	30.14	0.45	1.73	22.36
1000	0.48	1.09	8.73	0.51	1.46	21.38
1050	0.60	1.32	14.17	0.52	1.41	7.36
1100	0.61	1.35	16.31	0.57	1.64	12.12
1150	0.87	2.34	31.28	1.03	6.18	36.55