It has already been shown by observations of the evaporating velocity in practical concentrators that the formula of the evaporating velocity for the diminished turbulent flow is applicable to various types of multi-vertical flow system concentrators. However, exponents of the said formula have not yet been verified by experiments.
In this paper, the author presents the results of the study which was conducted on each exponent of the formula:
(1) The exponent of a constructive factor f was 0.22 as a result of experiments conducted with a large scale Shijolca and a small scale one.
(2) The exponent of the flow velocity of brine vω was 0.20 as a result of experiments conducted with a wind tunnel and a large scale Shijoka.
(3) In the case of the experiments conducted with a net system concentrator and other large scale Shijokas, the exponent of vω was also 0.20.
(4) The exponent of the depth B of a concentrator, the length L and depth B corrected by the intensity of the wind turbulence were-0.35, 0.15 and-0.50 respectively
Judging from the above results, it is necessary to analyze the formula for a concentrator in the wind region of atmosphere.

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In order to investigate the mechanism of evaporation and to generalize the formula of evaporation in the atmospheric region or in the turbulent region, the author analyzed the turbulent wind by means of Fourier's analysis and spectrum analysis. Then, the correlations between the energy of turbulence and the velocity of evaporation in atmospheric wind were studied.
The detailed results were as follows:
(1) The distribution of standard deviation of the wind velocity in the Shijoka has an inverse shape as compared with that of the distribution of mean wind velocity in it, and the standard deviation increased from the approach toward the exit of an evaporator.
(2) There was the maximum point of the standard deviation at the distance of 2H (H=height of an evaporator) behind the Shijoka.
(3) The evaporating velocity is proportional to the 0.27'th power of the intensity of turbulence or the standard deviation.
The evaporating velocity, however, varies according to the structures of turbulence, under a certain intensity of turbulence.
(4) The author analyzed wind velocity time series and obtained harmonic components of it. And the components which have up to 10 seconds periods had an important effect on the evaporating velocity.
(5) Both the component of energy which was obtained from the Fourier's coefficient by harmonic analysis of wind and the proportional amount of energy which was obtained by the spectrum analysis had high correlation with the evaporating velocity. Above all, it was conjectured that there were higher correlation between the amount of energy by means of spectrum analysis and the evaporating velocity.

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It was reported in our previous paper that the separation of molybdenum in bittern was possible by adsorption with ferric hydroxide and desorption with alkaline aqueous solution. In this paper, various effects on the equilibrium value and velocity in adsorption or desorption are reported.
In adsorption by ferric hydroxide, it was found that the equilibrium value between pH 3 to 5 agreed with Freundlich's adsorption isotherm, and were obtained the formulas for determining the adsorption ratio and for the necessary quantity of ferric hydroxide to complete the adsorption of molybdenum in bittern.
It was found that the equilibrium value in desorption was effected by the gravity ratio of elutriant aqueous solution to precipitate, the concentration of molybdenum in precipitate and the temperature of elutriant solution. Thus, were obtained the experimental formulas for the desorption by sodium hydroxide aqueous solution. In addition, it was ascertained that the velocities, of adsorption and desorption were rapid.

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Studies on the electrolytic concentratoin of sea water were carried out with homogeneous ion exchange membranes, and the following results were obtained.
1) With the rise of the current density, the concentration of the produced brine and its yield increased in an approximately linear relationship, respectively.
2) The amount of the produced salt increased in proportion to the current density.
3) The current efficiency on the electrolytic concentration was independent of the current density and remained substantially constant.
4) With the rise of the current density, the voltage of cell increased proportionally, and in this case the amount of electric power necessary to produce the concentrated brine containing 1 ton of salt also increased.

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As it was necessary to clarify the micromeritical nature of common salt in the process of the quantitative analysis on the caking of salt, some characteristics were studied from the view-point of void which was considered the most important factor affecting the caking of salt. The effect of the pressure on the void was given by the following formula:
ε=ε₀e^-βP
And the following formulae were derived from the above:
The data about a bulky pile of common salt were studied on the base of the above formulae.
Also, the permeability through the closest-packed layer of different samples was tested, and the shape of particle was found to have a great influence on the permeability.
ε: void h: depth ε₀: initial void ρ: apparent density β: compressing coeff. ρ∞: specific density P: pressure

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