Artificial stone tile comprising natural rock and method for manufacturing the same

A method for manufacturing an artificial stone tile comprising natural rock, comprising:

• a raw material provision step of preparing a raw material, wherein the raw material includes a stone power, clay, spodumene, and an additive;
• a slurry mixture preparation step of introducing the raw material into a ball mill mixer, and mixing the introduced raw material with water at a weight ratio of 1:1, thereby preparing a slurry mixture;
• an impurity removal step of placing the slurry mixture in a wet mill, and removing iron and water from the placed slurry mixture by dehydration and drying with hot air at 900° C., thereby preparing a powder mixture;
• a shaping step of forming the powder mixture into an artificial stone tile shape having a predetermined thickness by press compression;
• a calcination step of subjecting the formed artificial stone tile sequentially to (i) a first calcination which is performed at a first temperature, (ii) a quenching process which is performed at a second temperature, and (iii) a second calcination which is performed at a third temperature, wherein the first temperature is 1000° C. to 1200° C., wherein the second temperature is lower than the first temperature, wherein the third temperature is between the first temperature and the second temperature;
• a washing, polishing and cutting step of washing the artificial stone tile, polishing a surface of the artificial stone tile, and cutting the artificial stone tile into a given size;
• and
• an artificial stone tile finish step,
• wherein the raw material comprises 55 wt % of the stone powder, 20 wt % of the clay, 10 wt % of the spodumene, and 15 wt % of the additive, based on a total weight of the raw material, and
• wherein the additive comprises 2 parts by weight of iron oxide, 5 parts by weight of a hydrocarbon compound, 5 parts by weight of ruthenium hexamine trichloride, and 3 parts by weight of zirconium silicate.