To determine the calcium content in high grade pyrite concentrate and cinder by flame atomic absorption speetroscopy,adding ascorbic acid and lanthanum solution to eliminate the disturbance to the determination. With the linearity range to 0~5mg/L,correclative coefficient R=0.97～0.98 RSD(n=1)=4.60%,labelingrecovery of the ratio is between 97%～105%,and the reproducibility result is comparatively satisfactory.
Phosphate rock samples with high grade and mid-low grade were tested by using S-08 as flotation collector in Xinpu Phosphate Mine. Good beneficiation indexes with concentrate grades of P_2O_5 38.05%,P_2O_5 33.27%,and recovery of 83.13%,80.35% were obtained separately.
to foster the harmonious interpersonal relationships on the campus; to construct the college environment with high taste; to cultivate the healthy psychological environment and to encourage the students' creative spirits and perfect their behaviors.
Modern aesthetic education in various ways, individuation and high taste should be used to raise the appreciating level, spread the national spirit, optimize modern personality and promote the development of people's freedom.
By comparing SD method and traditional method in orebody outline of single engineering,calculation limits,calculating pattern of grade,managing higher grade and diagram output,advantage and disadvantage of SD method calculation system are explained. It is proved that SD reserves calculation system can be used in gold exploration areas.
These results suggest that despite their high degree of frugivory and high taste sensitivity for soluble carbohydrates, spider monkeys are opportunistic feeders with regard to maximizing net gain of energy.
I conclude that high taste sensitivity to CGs and less versatile food handling preventP.