Leadless bone porcelain and method for preparing same

The invention discloses leadless bone china and a preparation method thereof. The leadless bone china consists of cattle bone coal, pig bone coal, sandstone in Datong, quartz, feldspar, kaolin, calcined kaolin, and bentonite. The preparation method is as follows: leadless bone china is sorted manually, pulverized and processed; b. calcining, ball milling and alkaline cleaning process equipment and process are adopted for the bone coal; c. wet process is adopted for preparing semi-finished china and glaze; d. roll forming process and chain-type dryness are adopted for flat products and products in regular shape; e. high temperature biscuit firing with natural gas and medium and low temperature glaze firing are adopted; f. machine and manual spraying glazing are adopted for glazing; g. a roller hearth furnace is adopted for enamel firing in the environment of natural gases. The leadless bone china is primarily prepared with sandstone in Datong; the molding ratio of the product is as high as 96 percent; the product is transparent, light, fine and hard; the china is harder, whiter and more transparent than the ordinary china.