Van Yen district,Yen Bai province belongs to the Red River zone,which is a promising area for graphite ore,however,the methodologies were applied to previous research,evaluation and forecast potential of graphite are ...Van Yen district,Yen Bai province belongs to the Red River zone,which is a promising area for graphite ore,however,the methodologies were applied to previous research,evaluation and forecast potential of graphite are still limited.Based on that reason,this paper introduces a method to forecast prospective zoning by using mathematical methods,remote sensing combined with GIS(geographic information system)technology.The results of the study are an important basis in research orientation,in mineral exploration and exploitation in a reasonable way in order to meet the demand of the graphite raw materials for domestic and industries abroad.展开更多
Based on the characteristics of graphite ore from Panzhihua district, the present research tried to find a new technology to increase the purity of the graphite carbon from 93% to 97%. Study was conducted on leaching ...Based on the characteristics of graphite ore from Panzhihua district, the present research tried to find a new technology to increase the purity of the graphite carbon from 93% to 97%. Study was conducted on leaching agents, time, temperature, stirring speed and concentration of leaching solution affecting the process. The technological parameters chosen were： L / S=3：1, reaction time 30min, 5% concentration of sulfuric acid, reaction temperature 70℃, stirring speed 200rev/min. The results of the continuing tests with one kilogram showed that the graphite content can be increased from 93% to 97%, which reaches the requirement for high grade graphite. When waste acid from coke making is used to leach graphite, the result is also satisfactory, but the treatment of waste solution containing organic substances has to be further investigated.展开更多
文摘Van Yen district,Yen Bai province belongs to the Red River zone,which is a promising area for graphite ore,however,the methodologies were applied to previous research,evaluation and forecast potential of graphite are still limited.Based on that reason,this paper introduces a method to forecast prospective zoning by using mathematical methods,remote sensing combined with GIS(geographic information system)technology.The results of the study are an important basis in research orientation,in mineral exploration and exploitation in a reasonable way in order to meet the demand of the graphite raw materials for domestic and industries abroad.
文摘Based on the characteristics of graphite ore from Panzhihua district, the present research tried to find a new technology to increase the purity of the graphite carbon from 93% to 97%. Study was conducted on leaching agents, time, temperature, stirring speed and concentration of leaching solution affecting the process. The technological parameters chosen were： L / S=3：1, reaction time 30min, 5% concentration of sulfuric acid, reaction temperature 70℃, stirring speed 200rev/min. The results of the continuing tests with one kilogram showed that the graphite content can be increased from 93% to 97%, which reaches the requirement for high grade graphite. When waste acid from coke making is used to leach graphite, the result is also satisfactory, but the treatment of waste solution containing organic substances has to be further investigated.
