Lance pipe for refining and method of making the same
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United States of America Patent
Stats
-
Oct 27, 1981
Grant Date -
N/A
app pub date -
Aug 2, 1979
filing date -
Aug 28, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lance pipe covered with refractories having a thickness in the range 2-15 mm and a refractoriness higher than 1800.degree. K., comprising winding the outer periphery of a pipe with a refractory fibrous thread, lace, tape or cloth having a diameter of thickness in the range 0.5-15 mm at room temperature and under normal pressure; said thread, lace, tape or cloth being impregnated and adhered with a mixture which consists of 40-90% by weight of a refractory aggregate in which most of the particle size are -10 mesh but which contains the particle size of more than 15% by weight of each of -200 mesh and 28-200 mesh, and a refractory binder as the rest which consists of one or more of silica sol including 5-40% by weight of solid parts, hydrolyzed ethyl silicate and fire clay suspension.
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