1. Kuchuluka kwa ntchito ya #Malasha #Tar #Pitch ndi kupanga ndi kupanga mpweya wa carbon. Mulingo wa graphitization wa kaboni mu phula la malasha ndi wokwera, kotero ukhoza kugwiritsidwa ntchito ngati zomatira ndi electrode yachitsulo. Pachifukwa ichi, pali mitundu yambiri komanso madera ambiri omwe akukhudzidwa. 2. Pazinthu zachilengedwe, nthawi zambiri amasakanizidwa ndi mafuta amafuta kapena amapangidwa kukhala slurry kuti agwiritse ntchito, zomwe zimatha kukhala ndi zotsatira zosintha mafuta pamlingo wina wake. 3. Pothetsa zinthu zopanda madzi zomwe zimagwiritsidwa ntchito pomanga zomangamanga ndi zopangira mapaipi pambuyo popanga ndi kukonza. Chophimba cha epoxy coal tar pitch building ndi chomwe chimagwiritsidwa ntchito kwambiri.