Jianzhan [Fujian Jianyang Specialty]

What is Jianzhan? Authentic Fujian Jianyang specialty: Jianzhan

Content summary:Do you want to know what Jianzhan is? This article is a detailed introduction to the specialty of Jianyang, Fujian Province - Jianzhan. It was compiled and edited by the editorial team of China Specialty Network after reviewing and collecting relevant information on Jianzhan. The full text takes about 7 minutes to read, mainly including the basic introduction of Jianzhan and the product characteristics of Jianzhan? How did the history of Jianzhan come about? The production method of Jianzhan, etc

Basic Introduction of Jianzhan

Jianzhan is produced in Jianyang District, Nanping City, Fujian Province. Nanping City has identified 11 large-scale mineral production areas, such as Zhenghe piezoelectric crystal, melted crystal, Pucheng pyrite, Shaowu, Jianyang, Songxi, Guangze fluorite ore, Jianyang graphite ore, Yanping niobium tantalum ore, Shunchang limestone, cement siliceous raw materials, etc. There are 15 medium-sized mineral deposits, including 4 lead-zinc mines, 4 fluorite mines, 1 limestone mine, 2 serpentinite mines, 2 pyrite mines, 1 niobium tantalum mine, and 1 cement siliceous raw material. There are over 80 small-scale mineral production areas. There are more than 700 known mineralization points, over 200 geochemical anomalies, over 200 heavy sand anomalies (including 14 gold heavy sand anomalies and 112 tungsten tin molybdenum heavy sand anomalies), over 50 diversion anomalies, over 20 magnetic anomalies, and over 100 ground magnetic anomalies, which are suitable for making lamps

Jianzhan mostly has a large mouth and a small bottom, some of which are shaped like funnels; And most of them have circular feet, which are relatively shallow. The foot roots are often chamfered, and the plantar surface is slightly outward sloping; A few are solid feet (mainly small round bowls). The design is simple and robust, with a generally heavy feel. Jianzhan can be divided into four categories: open mouth, open mouth, closed mouth, and tied mouth, with each category divided into large, medium, and small; Small round bowls are classified as small closed mouthed bowls. Open bowl: The rim is outward curved, the lips are pointed and round, the abdominal wall is slanted or micro arc, the abdomen is shallow, and the lower abdomen is inward. Shallow circle feet. Shaped like a funnel, commonly known as a "bamboo hat bowl". In December 2016, the former General Administration of Quality Supervision, Inspection and Quarantine approved the implementation of geographical indication product protection for "Jianzhan"

(1) Appearance Quality Features

The tire material is thick and hard, the glaze is antique, and the texture changes are diverse. The shape of the vessel is a tea cup, with a thick body and a gray black color; The combination of the base glaze is dense, and the texture of each glaze surface is unique

(II) Fe2O3 content in the tire body: 6% -10%

(III) Water absorption rate: ≤ 5.0%

In the Song Dynasty, the history of kiln construction produced the construction of lamps, and famous literati and poets of the Song Dynasty had some famous sayings to praise it. For example, "Tu Hao Zi Ou Xin", "Suddenly Startling Wu Zhan Tu Hao Ban", "Jian'an Porcelain Zhe Gu Ban", "Song Feng Ming Lei Tu Hao Frost"

Production method of Jianzhan

(1) Process flow

The main production process is the preparation of embryo mud → casting shape → drying and glazing → high temperature firing

(II) Process Points

Preparation of Embryo Mud: Yellow mud, clay, red soil and other main raw materials are proportioned according to the requirements of the cup, soaked and stirred in a pool to form a slurry, filtered through a 100 to 200 mesh screen, soaked, stirred and filtered again, repeated 4-5 times, to make a paste like mud, sealed and placed in a sunshade for aging, so that the embryo mud has a uniform and fine structure, no visible impurities, a moisture content of 26% to 28%, and a fineness of less than 0.5% after passing through a 100 mesh screen

Casting style: using manual casting and semi manual casting

Drying and glazing: After the formed embryo is dried to a certain extent, it is repaired. After repairing the embryo, it is dried and fired before glazing or directly glazed after repairing the embryo. The semi exposed body is glazed using the methods of internal swinging and external immersion, and the outer part near the foot is not glazed

High temperature firing: Traditional wood kiln, electric kiln, and gas kiln are used for firing. The firing process controls the atmosphere inside the kiln to be an oxidizing flame or a reducing flame, and is fired at a high temperature of 1200 ℃ to 1400 ℃ in one go