1. What is the nature of Jianshui purple pottery?
The raw material of Jianshui purple pottery is argillaceous, which does not contain obvious sand such as quartz sand as purple sand. After filtration by high mesh filter, the raw material of purple pottery is very fine, without sand or with little sand content.
2. What are the five kinds of multicolored mud we often talk about?
The five colored mud is purple soil, loess, white soil, ash soil and five color soil (colored soil). “Five color soil” is a combination of various colors of soil, with more than five colors. In order to distinguish and introduce, it is named wuchromatic soil, which is actually a kind of color soil. Five different soils are the most primitive state excavated from the mountains.
3. Why usually see the raw material color of making purple pottery only two kinds?
This is because the purple clay we usually see is refined. Only when the original multicolored clay is mixed and refined according to a certain proportion, can it be used to make purple pottery. Red clay is made of purple soil, loess, clay, lime soil and colored soil (colored soil) in a certain proportion; white clay is made by mixing clay and lime.
4. What are the technological processes for processing purple pottery?
There are eight refining processes of Jianshui purple pottery clay: reclaiming, awakening, selecting, batching, crushing, washing and filtering, filtering mud and awakening mud. For the specific refining process, you can click to view this article: taking materials, awakening materials, ingredients, washing and filtering slurry… Purple pottery mud has as many as eight steps
5. What elements are contained in Jianshui purple pottery clay?
The purple pottery clay contains the following elements: iron oxide 12.26%, silicon 59.3%, aluminum 17.45%, magnesium, sodium, calcium, potassium, etc.
6. What are the effects of the properties of purple clay on the production process?
The refined purple pottery clay is fine if the paste is grease, and the plasticity is not strong. Therefore, the purple pottery is mainly formed by drawing the blank; the most important point is that the purple pottery clay is very delicate, so it is conducive to the two steps of “carving” and “filling mud” in decoration, which can make the engraving more accurate and the mud filling and the original billet are better integrated.
7. The refined purple clay has only two colors. Why can we produce so many color works?
This is because purple pottery clay contains rich elements, especially iron, which can produce various reactions, such as oxidation, reduction or mixing, at different temperatures and in the environment with sufficient or insufficient oxygen to form a variety of color surface effects.
8. How much is the current reserve of purple pottery clay in Jianshui?
At present, the proven latosol red soil in Jianshui has an area of 1384800 mu, which is distributed in the dam area and hilly area with an altitude of 1300-1500 meters; Jianshui purple pottery has another purple soil with soil material, with a proven reserve area of 685600 mu, which is distributed on the surface of 1300-1600 meters above sea level.