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Effect of composites and microstructure on normal pressure core leach was investigated,the size precision of the lumen and good teachability can be assured when amount of active additives is 13%;good leachability can be ensured when porosity factor be controlled higher than 35%; the core mixed by machine has good leachability than by manual.

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The properties of TCC with ATS were as good as the TCC with HTS, better that the requirement of standard GB8744-88 for semi-graphitic carbon block. As good as TCC with HTS in industrial cells, the TCC with ATS also reduces the sodium penetration to cathodic lining, no tear-off of the coating was found after starting up of the cells. As compared with reference cells, the operation of coating cells with ATS was also improved to keep good shape of cell chamber, reduce the formation of sludge on the cell bottom, and gain more uniform current distribution. The ohmic drop of TCC cell bottom was lessened by 11. 5mV. The current efficiency was increased by about 1. 48% in average. It was estimated that the TCC life could be 44 months. Obviously, the TCC with ATS could also improve the performance of industrial cells, save energy, and increase the cell life.

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The replacement of valves and good stability and good stability of its unbalanced force changes in the smaller valve, a good guide.

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