Abstract
Among the various sensors used for crystal growing, the consistency meter “Rheometer” is known to detect suspension density other than the degree of supersaturation. A report says that the consistency meter is unsuitable for the crystal growing in a solution in which the crystal growing speed is slow.
The author defines the consistency as a value combining the solution concentration, the suspension density and their intermediate matter “houga”. The author also is advocating that the crystal growth should be controlled by controlling the amount of the “houga”.
To show that the control of the “houga” amount is effective for crystal growth control, two kinds of crystal growing experiments are performed. One is the CGCR which controls the “Rheometer” value (consistency), and the other, the IGCR which controls the amount of “houga” in the “Rheometer” value.
This paper reports that the “houga” amount controlling IGCR resulted, compared to the CGCR, in improvements in recovery rate and crystal quality, with shorter crystal growing speed.
