Studies On Mineral Secondary Pollution And Its Profound Problem

The pollution of mineral reagents and gangue has been the main contents of reseach on mineral environment pollution. But mineral reagents secondary pollutions, gangue dam secondary pollutions and compound pollution of mineral reagents with the gangue in the gangue dam is the leading edge of environmental science. The research on profound problem of secondary pollution in mineral environment is important.In this paper, we study mineral secondary pollution and its profound problem. The main contents are as follows:1 Secondary pollutions of mineral reagents in each process of mill run.2 Secondary pollutions of mineral reagents in gangue dam.3 Impact factor of the secondary pollutions of mineral reagents.4 Secondary pollution of gangue dam and the source active carbon which can cause gangue dam secondary pollution.The main conclusions are as follows:1 Common mineral reagents can creat its secondary pollutants CS₂ in drug poll and concentration basin. the density of CS₂ have already exceeded national security standard.secondary pollutants of mineral reagents is a threat to worker's healthy.2 The gangue dam is main place of secondary pollutions, when mineral reagents come to gangue dam its secondary pollutions turn worse. By rough estimate, the usage of xanthonic acid mineral reagents contribute 1/15 of atmospheric sulphur pollution which gets into atmosphere by mankind's activity.3 A majority of common mineral reagents can produce secondary pollutants. Various mines can promote secondary pollutants of mineral reagents . And mineral reagents can produce more secondary pollutant—CS₂,under the condition of the sunlight, air and the acidity .These exactly matches the characteristics of gangue dam everionment.4 Organic materials was led into a gangue dam anthropogenic , can result in secondary pollutions of the dam: It is discovered that low-molecule weight organic acid is one of the materials of the activate carbon source which produces CS₂. And low-molecule weight organic acid is placed in the passage of living creature organic metabolism and decline. It is inspire to the function between sulphide ore with organic carbon source that H. Stedman of Donalds has predicted 20 years ago.In fine,the secondary pollution problems of mine exist in each stage of mine dirty. And its great danger should cause the attention of concerning staff.This research involves the field of organic pollution, secondary pollution, compound pollution,atmosphere pollution, and come down to environmental chemistry,environmental organic chemistry, environmental geochemistry,environmental photochemistry, atmospheric chemistry, and etc., and study manifold of pollution patterns. Our researches provide a theories basis to comprehension and control of a mine's pollution, it will provide theories basis for the mineral mountain environment the law establish. Our work also provided the research system for other secondary pollution research in environment chemistry and is representative and demonstration.