Journal of the Ceramic Association, Japan

Studies on Glass Silvering Solution

K. Nakanishi

1934 Volume 42 Issue 495 Pages 127-136
Published: 1934
Released on J-STAGE: April 30, 2010

DOIhttps://doi.org/10.2109/jcersj1892.42.127

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The author studied on silver plating solution which was composed of a ammonical water solution of silver nitrate and a water solution of rochelle salt. The results were briefly summerised as follows:
1. Ammonia water, when used in excess to dissolve a precipitate of Ag₂O, was found to hinder the reduction of silver, while in the case of insufficient quantity, a white precipitate of silver tartrate, which results the loss of available silver, was produced. Just quantity of ammonia water to dissolve Ag₂O was necessary to obtained a good mirror.
2. Relative quanities of silver nitrate and rochelle salt were found to be changeable in some range in a mirror making, that is, a solution of low content of silver nitrate and high content of rochelle salt or vice versa showed the same results, but below 0.0014gr or of silver nitrate per cm² of glass surface good mirror could not be made.
3. The reduction of silver was accelerated by rising of temperature of increase of concentration of the solution.
4. The addition of silver nitrate to the water solution of rochelle salt coursed the increase of the reducing action of the latter, and the more quantity of silver nitrate the more increase was found.
The boiling hours of the rochelle salt solution which contained silver nitrate effectad upon the reducing action of it, and the boiling for an hour was found to be most effective to obtained a powerful solution.
The increase of the reducing power of a rochelle salt solution which contained silver nitrate was found to be owed to neither silver ion or colloidal silver, nor NO₃ radical or acidic substance in the solution.

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Hydratation vom Tonerdeschmelzzement-III

Katsuzo Koyanagi

1934 Volume 42 Issue 495 Pages 136-139
Published: 1934
Released on J-STAGE: April 30, 2010

DOIhttps://doi.org/10.2109/jcersj1892.42.136

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Die Hydratation vom kiselsäurearmen Tonerdeschmelzzement der Chemischen Zusammensetzung wie folgt wurde untersucht.
Glühverlust SiO₂ Al₂O₃ Fe₂O₃ CaO MgO SO₃
_??_ 3.91% 41.84% 16.47% 36.72% 1.05% Spur
Es wurde gefunden, Dass Die Hydratation von Diesem Zement gleichfalls wie beim Ciment fondn wie folgt verläuft:-
CaO⋅Al₂O₃+Ca(OH)₂+65H₂O=2CaO⋅Al₂O₃⋅7.5H₂O………(1)
2(CaO⋅Al₂O₃)+10.5H₂O=2CaO⋅Al₂O₃⋅7.5H₂O+Al₂O₃⋅3H₂O………(2)
Da aber, wegen Des kleineren Gehaltes von Kieselsäure bzw. Kalksilikat im Zement, weniges Kalkhydrat, im früheren Termin der Hydratation erzeugt wird, findet Reaktion (1) sehr wenig statt, verlänft Die Hydratation hauptsächlich nach Reaktion. (2)

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The Fnfluence of Fluorspar on Portland Cement Manufacture

The Addition of below 1% Fluorspar to the Raw Mixture

Yoshiaki Sanada

1934 Volume 42 Issue 495 Pages 139-141
Published: 1934
Released on J-STAGE: April 30, 2010

DOIhttps://doi.org/10.2109/jcersj1892.42.139

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In continuing the previous study, the author reports in present paper on the influence of the fluorspar content, varied 0.0%, 0.2%, 0.4%, 0.6%, 0.8% and 1.0%, in a raw mixture.
Results are: (1) This substance, when added in quantities from 0.2%, to 1.0%, decreased the consumption of the heavy oil, increased the output of the clinker and retarded the set of the cement. (2) That containing 0.2%, 0.4% or 0.6% flourspar gave the high-strength cement. (3) 0.4%-0.6% fluorspar are suitable contents for the consumption of the heavy oil and the quality of the cement.

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[in Japanese]

1934 Volume 42 Issue 495 Pages 142-150
Published: 1934
Released on J-STAGE: April 30, 2010

DOIhttps://doi.org/10.2109/jcersj1892.42.142

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[title in Japanese]

[in Japanese]

1934 Volume 42 Issue 495 Pages 150-154
Published: 1934
Released on J-STAGE: April 30, 2010

DOIhttps://doi.org/10.2109/jcersj1892.42.150

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[title in Japanese]

[in Japanese]

1934 Volume 42 Issue 495 Pages 154-158
Published: 1934
Released on J-STAGE: April 30, 2010

DOIhttps://doi.org/10.2109/jcersj1892.42.154

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[title in Japanese]

[in Japanese]

1934 Volume 42 Issue 495 Pages 158-161
Published: 1934
Released on J-STAGE: April 30, 2010

DOIhttps://doi.org/10.2109/jcersj1892.42.158

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[title in Japanese]

[in Japanese]

1934 Volume 42 Issue 495 Pages 161-166
Published: 1934
Released on J-STAGE: April 30, 2010

DOIhttps://doi.org/10.2109/jcersj1892.42.161

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[title in Japanese]

1934 Volume 42 Issue 495 Pages 167-175
Published: 1934
Released on J-STAGE: April 30, 2010

DOIhttps://doi.org/10.2109/jcersj1892.42.167

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[title in Japanese]

1934 Volume 42 Issue 495 Pages 175-183
Published: 1934
Released on J-STAGE: April 30, 2010

DOIhttps://doi.org/10.2109/jcersj1892.42.175

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[title in Japanese]

1934 Volume 42 Issue 495 Pages 185-189
Published: 1934
Released on J-STAGE: April 30, 2010

DOIhttps://doi.org/10.2109/jcersj1892.42.185

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[title in Japanese]

1934 Volume 42 Issue 495 Pages 189-194
Published: 1934
Released on J-STAGE: April 30, 2010

DOIhttps://doi.org/10.2109/jcersj1892.42.189

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[title in Japanese]

1934 Volume 42 Issue 495 Pages 194
Published: 1934
Released on J-STAGE: April 30, 2010

DOIhttps://doi.org/10.2109/jcersj1892.42.194

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