Reaction Kinetics of Sodium Bentonite with Different Acid Systems: An Experimental Study

Table 4

The relationship between the proportion of HF in different pH values and the range of dissolution rate at different times.

pH interval	HF distribution ratio	1 h dissolution rate variation range	4 h dissolution rate variation range
0.3∼0.4	0.9686∼0.9629	30∼29.1	32.7∼31.7
0.4∼0.5	0.9629∼0.9573	29.1∼28.7	31.7∼31