C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
49/8.1
C03B 37/06 (2006.01) C03B 37/10 (2006.01) D04H 1/00 (2006.01)
Patent
CA 1264225
- 1 - Abstract Apparatus for producing mineral fibres from silicate raw materials such as basalt, in particular by blast drawing In the production of bonded mineral fibre wool, binder is injected in the chute (16) onto the fibres, as a result of which there is a tendency for the fibres to adhere to the walls of the chute (16) and to form encrus- tations due to binder becoming cured in the course of time. To avoid such encrustations, which can cause pro- duction shortfalls, the circumferential walls (18, 20) of the chute are constructed as jacketed walls and are cooled by passing cooling liquid in the hollow space (30) bet- ween the inner and outer surface portions (28, 29). It has been found, surprisingly, that as a result no solid encrustations can form even over prolonged periods, since temporarily adhering fibres cannot in fact become adhe- sively bonded due to insufficient curing of the binder at the low temperatures, but are continuously removed from the wall again. In contrast to the permanent clean- ing of the chute walls, for example in the form of rotary walls, not only is the considerable expenditure in terms of investment and maintenance and/or unforeseeable plant shutdowns avoided, but also there is obtained dimension- ally accurate sealing of the circumferential walls (18, 20) of the chute (16), so that there is no occurrence of fibre losses or attraction of unwanted air.
504109
Bengl Dieter
Horres Johannes
Grunzweig & Hartmann Aktiengesellschaft
Sim & Mcburney
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