Method for increasing kiln transformation ratio of Nixing pottery large vessels

Abstract

The invention provides a method for increasing kiln transformation ratio of Nixing pottery large vessels. The method comprises the following steps: 1) preparing blanks, namely producing the blanks from 50-60 parts by weight of east mud, 30-40 parts by weight of west mud and 8-15 parts by weight of iron oxide red; 2) blank forming, namely forming the blanks into various large vessels of different shapes; 3) shaping the blanks; 4) drying the blanks; and 5) firing the blanks, namely gradually increasing the temperature to the range of 500-750 DEG C at a temperature rise rate of 30-50 DEG C per hour, adding a kiln transformation material at the temperature and sealing the air holes of the kiln, and then increasing the temperature to the range of 1000-1050 DEG C at a temperature rise rate of 200-250 DEG C per hour, preserving heat at the temperature and firing for 0.5-1 hour, naturally cooling and taking out of the kiln, thereby obtaining the finished products large Nixing pottery vessels.

Description

technical field

[0001] The invention relates to a method for preparing pottery, in particular to a method for improving the kiln variability of large-scale Nixing pottery. Background technique

[0002] Nixing pottery utensils are divided into large utensils (height ≥ 35cm) and small utensils (both height < 35cm) according to the utensil model. Regardless of the size of the vessel, the production process of Nixing pottery is the same, including the preparation of the blank (the soil east of the Qinjiang River across Qinzhou City, commonly known as Dongni, is soft clay, yellow-white in color, and contains a small amount of quartz sand; The soil in the area west of the Heqin River, commonly known as Xini, is a kind of purple mudstone with high iron content. It is purple in color and has a small amount of iron on the surface. than mixing, through a series of processes such as grinding and dehydration to make blanks), blank forming, trimming blanks, blank drying, blank decora...