Tekinoroji yekugadzira ye taphole clay:
Kuumbwa kweanhydrous taphole ivhu kunogona kukamurwa kuita zvikamu zviviri - refractory aggregate uye binder. Refractory aggregate inoreva refractory mbishi zvinhu senge corundum, mullite, coke gem uye zvakagadziridzwa zvinhu senge coke uye mica. Iyo binder imvura kana tar pitch uye phenolic resin uye zvimwe organic zvinhu, asi zvakare yakasanganiswa neSiC, Si3N4, ekuwedzera ejenti uye admixtures. Kuunganidza zvichienderana nehumwe hukuru uye huremu hwematrix, mukubatanidzwa kwebhainda kuitira kuti ive nepurasitiki yakati, kuitira kuti dope cannon rinogona kuendeswa mumuromo wesimbi kuvhara simbi inopisa.