Ibala izitena ezikhanyelayo kwiziko eliqhumayo

Izitena zodongwe ze-refractory ze-blast furnaces kufuneka zenziwe ngodongwe olunqabileyo lwe-lining of blast furnace wall. Izitena ezilahlayo zodongwe zomlilo eziqhumayo zisetyenziselwa umqala, i-shaft, i-hearth, i-bottom of the blast furnace lining kunye ne-furnace shaft yesithando somlilo esikhulu.

Izitena ze-clay refractory ze-blast furnace zifuna amandla aphezulu acinezelayo ezinto ezingatshiyo kwiqondo lokushisa elingaphakathi, elinokumelana nomonakalo wexesha elide lomsebenzi wezinto ezilahlwayo ezihlaziyiweyo; umthamo omncinci we-shrinkage phantsi komsebenzi wexesha elide kwiqondo lokushisa eliphezulu kunenzuzo ekugcineni ubuninzi bomgca wesithando somlilo; i-porosity ephantsi ebonakalayo kunye ne-Fe: O. Umxholo wamanzi aphantsi unokunciphisa ukuqokelelwa kwesityalo sekhabhoni kumngxuma wokukhupha umoya kunye nokuthintela izitena eziphikisayo ekudumbeni nasekukhululeni kwaye zibhujiswe ngexesha lenkqubo yonke yesicelo; izinto ezisezantsi zokunyibilika ziveliswa kancinci. Izitena ezilahlayo zodongwe zomlilo eziqhumayo zinezakhiwo ezingcono kunezitena zodongwe eziqhelekileyo.

Ukuqhekeka kwecandelo elinqamlezayo kwizitena zodongwe ezilahlayo kwiziko lokuqhushumba kuneemfuno:

(1) Xa ububanzi bubonke bespali bungagqithi kwi-0.25mm, ubude abukhawulelwanga;

(2) Xa ububanzi bespall bubonke bu-0.26～0.5mm, ubude akufunekanga budlule kwi-15mm;

(3) Xa ububanzi bubonke bespall budlula i-0.50mm, akuvumelekanga.

Iintanda ezinqamlezileyo zezitena zodongwe ezineemfuno:

(1) Xa ububanzi bubonke bespali bungagqithi kwi-0.25mm, ubude abukhawulelwanga;

(2) Xa ububanzi bespall bubonke bu-0.26～0.50mm, ubude akufunekanga budlule kwi-40mm;

(3) Ukuzalisa akuvumelekanga xa ububanzi bubonke budlula i-0.5mm.