FIELD: devices for burning solid fuel. SUBSTANCE: upper grate 2 is made from highly heat- and wear-resistant material and slots 6 of upper grate are narrower than slots 3 of lower grate. Upper grate may be made of several sections or have a larger number of slots than the lower one so that one slot in lower grate corresponds to several slots in the upper one. Sectional grate may be fastened to lower grate by welding or by screws with countersunk-head screws. EFFECT: higher reliability and longer service life. 6 cl, 4 dwg
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Authors
Dates
1994-02-15—Published
1991-09-17—Filed