4. Dɛn ne adwumayɛ ho nsɛnkyerɛnne titiriw a ɛkyerɛ nneɛma a ɛyɛ hyew?
Adwumayɛ ho nsɛnkyerɛnne titiriw a ɛwɔ nneɛma a wɔde yɛ ade a ɛyɛ hyew no mu bi ne refractoriness, thermal shock resistance, compressive strength, bulk density and thermal expansion coefficient. refractoriness kyerɛ tumi a nneɛma tumi gyina ɔhyew a ɛkɔ soro ano a ɛnnwo, na ɛyɛ nsɛnkyerɛnne a ɛho hia a wɔde hwɛ nneɛma a ɛma ahoɔden a ɛyɛ hyew no mu biako no mu biako{1}} ɔhyew a ɛyɛ den no yɛ nea ɛyɛ nnam a ɛyɛ adwuma no yɛ nea ɛho nhia Nneɛma a ɛtumi gyina nhyɛsoɔ ano wɔ ɔhyew tebea a ɛkorɔn mu, na bulk density kyerɛ adeɛ no mu duru ne ne su. Ɔhyew ntrɛmu nsusuiɛ no yɛ adeɛ bi dodoɔ nsakraeɛ dodoɔ berɛ a ɔhyew nsakraeɛ. ɔhyew ntrɛmu nsusuiɛ a ɛba fam no boa ma adeɛ no ahoɔden a ɛtumi gyina.
5. Dɛn ne ɔhaw ahorow a ɛtaa ba wɔ nneɛma a ɛyɛ hyew a ɛwɔ mfiridwuma mu no mu?
Wɔ mfiridwuma mu dwumadie mu no, ɔhaw a ɛtaa ba wɔ nneɛma a ɛntumi nyɛ adwuma ho no bi ne ɔhyeɛ a ɛsɛe adeɛ, nnuru a ɛporɔw, mfiri a ɛporɔw ne spelling. ɔhyeɛ a ɛsɛe no kyerɛ sɛ nneɛma a ɛtumi dum no nwene, ɛporɔw na ɛpaapae wɔ tebea a ɛyɛ hyeɛ a ɛkorɔn mu{1}} nnuru a ɛyɛ corrosion ne nnuru a ɛyɛ adwuma wɔ afiri a ɛma nsuo yɛ hyew ne mframa a ɛkɔ so no ntam ne nsuo a ɛde ba ne frinace a ɛde ba no mu a ɛde ba, a ɛde ba wɔ nneɛma a wɔsɛe no ho{ etc. Wɔ refractory nneɛma no ani. spalling taa ba wɔ surface of refractory materials esiane ɔhyew nsakrae, nnuru a ɛyɛ adwuma anaasɛ mfiri adwennwen nti, a ɛka adwumayɛ ne ɔsom nkwa nyinaa{5}} wɔ saa ɔhaw ahorow yi ho mmuaema mu, daa nhwehwɛmu ne nsiesie ho hia, na ɛsɛ sɛ wɔpaw nneɛma ne adansi nhyehyɛe a ɛfata ma wɔde twetwe nneɛma a wɔde yɛ adwuma no mu nkwa a wɔde ma no ho kɔ bere a wɔde yɛ adwuma no mu a wɔde wɔn ho to so{6}}}}}}.
