球土是一種經(jīng)過水洗、攪拌、過篩，除鐵，陳腐均化、混合以及壓濾等工藝形成的黏土。由于其具有很高的白度、良好的可塑性和較高的強度，它可以廣泛應(yīng)用于瓷磚坯體，特別是玻化磚坯體。他們可以通過使用球土來改善產(chǎn)品性能，降低生產(chǎn)成本。

（It is one kind of fine processed Clay. After washing , stirring , sieving , deironing , homogenizing , mixing and pressure filtering , it could be used for tiles body , especially for vitrified tiles because of its high whiteness , good plasticity and super strength . We can benefited from the development of refined ball clay which offered us improved performance and reduced the manufacturing process cost.）