Wood firing technology for purple clay ware

Abstract

The invention relates to a technology of purple clay ware and particularly relates to a wood firing technology for purple clay ware, belonging to the technical field of purple clay ware firing. A finished product of purple clay ware is prepared by a series of steps such as throwing and drying, fettling and drying, glazing and drying and kiln loading and wood firing. In the invention, a reduction firing way is realized by adding wood into an electric kiln and replaces the way of wood firing in a gas-fired kiln in the prior art; more than 30% of reducing gas CO2 generated by wood burning in the kiln is adopted for strong reduction of iron oxide in the purple clay so that the purple clay ware has magnetism and ability of improving water quality; and meanwhile, purple clay ware with rich and bright colors can be formed without adding a coloring agent, and the artistic value of the purple clay ware is increased.

Description

technical field [0001] The invention relates to a process for purple sand vessels, in particular to a firewood firing process for purple sand vessels, and belongs to the technical field of purple sand vessel firing. Background technique [0002] The raw material for firing purple sand vessels is produced in Yixing, Jiangsu, my country, and is a very special kind of clay. Zisha mud is mainly composed of sandy soil, rich in various minerals, among which the content of iron oxide is quite high. Before the present invention was made, among the existing purple sand firing technologies, electric kilns, gas kilns, and liquefied gas kilns were mostly used. These kilns were used to fire purple sand vessels, and the firing temperature was generally 1120°C~1180°C. Atmosphere dominates. [0003] The electric kiln is a closed space that is heated by metal resistance wires. It is characterized by a fixed oxygen content (the content in the kiln space when the kiln is installed), slow tem...

AI Technical Summary

Problems solved by technology

[0006] So far, most of the purple sand vessels in Yixing contain a large amount of oxidized ingredients after being fired. The vessel itself has no function of reducing and purifying the water it contains, and the taste of the water it contains is poor. At the same time, the color of the fired purple sand is relatively uniform. Not many, in order to reflect the rich and bright color of purple sand, various other coloring agents need to be added; in addition, the heat insulation performance of purple sand vessels fired by traditional methods is poor, which makes it inconvenient for people to take purple sand vessels full of high-temperature water