The effects of Cl-concentration,temperature,pH,flow velocity,soluble oxygen content of seawater and anodic current on the potential of high purity zinc and Zn-Al-Cd reference electrodes were investigated. The results ...The effects of Cl-concentration,temperature,pH,flow velocity,soluble oxygen content of seawater and anodic current on the potential of high purity zinc and Zn-Al-Cd reference electrodes were investigated. The results show that the investigated metal materials are liable to establish stable potential and act as reference electrodes in seawater,diluted seawater and urban tap water. Cl-concentration,temperature,seawater flow velocity and anodic current have an obvious effect on zinc potentials. However,seawater pH has no obvious effect on zinc potentials.展开更多
The manufacturing technology of high purity and ultra fine zinc oxide powder,leaching out from zinc oxide mineral by the sulfuric acid,purifying of leaching liquor,synthesizing basic zinc carbonate,cleansing,drying an...The manufacturing technology of high purity and ultra fine zinc oxide powder,leaching out from zinc oxide mineral by the sulfuric acid,purifying of leaching liquor,synthesizing basic zinc carbonate,cleansing,drying and calcining was studied.Many condition tests were used to determine the optimum technology process.The zinc oxide powder obtained was tested by chemical composition analysis and construction analysis.The results show that the size of zinc oxide powder,the purity and the specific surface area were all better than the required standard.展开更多
文摘The effects of Cl-concentration,temperature,pH,flow velocity,soluble oxygen content of seawater and anodic current on the potential of high purity zinc and Zn-Al-Cd reference electrodes were investigated. The results show that the investigated metal materials are liable to establish stable potential and act as reference electrodes in seawater,diluted seawater and urban tap water. Cl-concentration,temperature,seawater flow velocity and anodic current have an obvious effect on zinc potentials. However,seawater pH has no obvious effect on zinc potentials.
文摘The manufacturing technology of high purity and ultra fine zinc oxide powder,leaching out from zinc oxide mineral by the sulfuric acid,purifying of leaching liquor,synthesizing basic zinc carbonate,cleansing,drying and calcining was studied.Many condition tests were used to determine the optimum technology process.The zinc oxide powder obtained was tested by chemical composition analysis and construction analysis.The results show that the size of zinc oxide powder,the purity and the specific surface area were all better than the required standard.
