16 samples of Chinese coal were tested for their flotation and hydropbilic properties. The two physico-chemical parameters, wetting heat and contact angle were compared as they were used in evaluating the flotability ...16 samples of Chinese coal were tested for their flotation and hydropbilic properties. The two physico-chemical parameters, wetting heat and contact angle were compared as they were used in evaluating the flotability of coal. The result shows that the wetting heat is in good accordance with flotability and is better than contact angle in reflecting the flotability. A new idea of classifying the flotability using wetting heat is put forward.展开更多
The wetting heat and contact angle of sixteen coal samples were determined and the slurry-forming ability of coal were researched. Comparing the relationship of the wetting heat and contact angle with the slurry-formi...The wetting heat and contact angle of sixteen coal samples were determined and the slurry-forming ability of coal were researched. Comparing the relationship of the wetting heat and contact angle with the slurry-forming ability or coal, the auther has found out that the slurry-forming ability of coal can be measured by the wetting heat.展开更多
Relative contact angle and heat of wetting can be used to provide a measurement of surface wettability of synthetic magnetite. The comparison between synthetic and natural magnetite in terms of surface wettability sho...Relative contact angle and heat of wetting can be used to provide a measurement of surface wettability of synthetic magnetite. The comparison between synthetic and natural magnetite in terms of surface wettability showed that, using the same kind of wetting liquid, the difference in the relative contact angle was 10° between the concentrate and tailings obtained from reverse fl otation of synthetic magnetite, while the difference was more than 20° between the concentrate and tailings obtained from reverse fl otation of natural magnetite. As for the concentrate and tailings from reverse fl otation of synthetic magnetite with water as wetting liquid, the relative ratio of their wetting heat was 106.21%. In comparison, the relative ratio of wetting heat was 176.59% for concentrate and tailings from reverse fl otation of natural magnetite, showing a 70.38% difference.展开更多
文摘16 samples of Chinese coal were tested for their flotation and hydropbilic properties. The two physico-chemical parameters, wetting heat and contact angle were compared as they were used in evaluating the flotability of coal. The result shows that the wetting heat is in good accordance with flotability and is better than contact angle in reflecting the flotability. A new idea of classifying the flotability using wetting heat is put forward.
文摘The wetting heat and contact angle of sixteen coal samples were determined and the slurry-forming ability of coal were researched. Comparing the relationship of the wetting heat and contact angle with the slurry-forming ability or coal, the auther has found out that the slurry-forming ability of coal can be measured by the wetting heat.
基金Funded by the National Natural Science Foundation of China(No.51144003)
文摘Relative contact angle and heat of wetting can be used to provide a measurement of surface wettability of synthetic magnetite. The comparison between synthetic and natural magnetite in terms of surface wettability showed that, using the same kind of wetting liquid, the difference in the relative contact angle was 10° between the concentrate and tailings obtained from reverse fl otation of synthetic magnetite, while the difference was more than 20° between the concentrate and tailings obtained from reverse fl otation of natural magnetite. As for the concentrate and tailings from reverse fl otation of synthetic magnetite with water as wetting liquid, the relative ratio of their wetting heat was 106.21%. In comparison, the relative ratio of wetting heat was 176.59% for concentrate and tailings from reverse fl otation of natural magnetite, showing a 70.38% difference.
