Acid pickling tank for metal strips

Details Acid pickling tank for metal strips Acid pickling tank for metal strips

1985-05-15

1986-08-05

Kellogg, Arthur

Adhesive bonding and miscellaneous chemical manufacture

Differential fluid etching apparatus

With microwave gas energizing means

134122R, 134201, C23F 102

Patent

active

046041575

ABSTRACT:
The invention relates to an acid pickling tank for metal strips with a width equal to or greater than 0.50 meter.
The tank incorporates an external supporting structure (1) and a metal casing (3) coating internally with rubber (6). The rubber layer (6) is lined internally with large slabs (10a, 10b) of a natural rock of volcanic origin, which has a total SiO.sub.2 and Al.sub.2 O.sub.3 content greater than 60%, a porosity of between 6 and 30% and a relative density of less than 3. At most three slabs (10b) are placed side by side along the width of the tank and at most one slab (10a) is placed along its height. The minimum dimensions of a slab (10a or 10b) are 0.50.times.0.50 meter.
The invention is applicable in particular to the pickling of strips of hot-rolled metal sheets.

REFERENCES:
patent: 1899413 (1933-02-01), Fritz
patent: 2121139 (1938-06-01), Clauss et al.
patent: 2676599 (1954-04-01), McHenry
patent: 3087505 (1963-04-01), Laine
patent: 3095463 (1963-06-01), Chang et al.

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