C - Chemistry – Metallurgy – 23 – G
Patent
C - Chemistry, Metallurgy
23
G
C23G 3/02 (2006.01) C23G 1/02 (2006.01) G05D 11/13 (2006.01) G05D 21/02 (2006.01)
Patent
CA 2308777
An acid concentration continuous measuring apparatus is equipped with the combination of a body having a flow path through which pickling solution contained in a pickling tank is made to continuously pass in a single direction, a density sensor, a temperature sensor, and a conductivity sensor which are installed on the body and substantially continuously measure the pickling solution flowing along the flow path, and a calculating apparatus which calculates the acid concentration of the pickling solution based on the measured results. Feedback control of the hydrochloric acid concentration in a final pickling tank of a plurality of pickling tanks forming a continuous pickling line is performed using the acid concentration continuous measuring apparatus.
On décrit un appareil de mesurage en continu de la concentration en acides. L'appareil comprend un corps principal muni d'un conduit d'écoulement permettant à un liquide de décapage contenu dans un bain d'attaque de s'écouler en continu dans une direction. L'appareil comprend également un densitomètre, un thermomètre et un conductivimètre disposés dans le corps principal pour mesurer sensiblement en continu la densité, la température et la conductivité du liquide de décapage s'écoulant à travers le conduit d'écoulement. L'appareil comprend en outre une unité arithmétique pour évaluer la concentration en acides du liquide de décapage sur la base des résultats du mesurage. Cet appareil s'utilise pour contrôler par rétroaction la concentration en acide chlorhydrique dans le bain d'attaque final parmi une pluralité de bains d'attaque constituant une installation de décapage en continu.
Esaki Kazuto
Kataoka Takeo
Nonaka Toshihiko
Kabushiki Kaisha Toshiba
Osler Hoskin & Harcourt Llp
Sumitomo Metal Industries Ltd.
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