The invention provides diatomite
ceramic with
crack resistance and
high density and a preparation method thereof. The diatomite
ceramic comprises a blank body and a
glaze layer, the blank body comprises the following raw materials: diatomite, modified diatomite, kaolin,
quartz,
feldspar, a fluxing agent, a first binder and a reinforcing agent; the
glaze layer is prepared from the following raw materials: modified diatomite,
mica powder, talcum
powder,
feldspar,
zinc oxide, a second binder, a stabilizer, a dispersing agent and a wear-resistant additive. The firing time of the
green body is 10-12 hours, the
green body is fired and molded in a stepped and segmented mode, after
glazing, the
green body is fired for 5-7 hours, the green body is subjected to
glaze firing in a stepped and segmented mode, and the anti-
cracking and high-density diatomite
ceramic is obtained. According to the invention, the diatomite is used as a main
raw material of the green body, the modified diatomite and the compounded additive are utilized to reduce deformation and
cracking of the green body in the firing process, increase the strength of the green body and improve the firing rate, and the components of the glaze layer are improved to make the green body and the glaze layer have good compactness,
crack resistance and deformation resistance.