山东寿光市双王城遗址古代制盐工艺的几个问题

On Some Issues about the Ancient Salt-making Techniques of Salt Industry Remains at Shuangwangcheng,Shouguang City,Shandong

通过对双王城遗址所出部分白色钙质遗物进行X射线衍射、锶同位素、氧碳同位素等分析,可认识卤水来源、成盐温度等与制盐工艺相关的问题,遗址中大量出现的钙镁碳酸盐则可以作为判断盐业遗址的化学证据,以此了解商周时期莱州湾沿海盐业遗址制盐工艺的流程。

The white calcareous remains excavated from the Shuangwangcheng salt-making site in Shouguang City are analyzed through XRD and stable isotopes （O/C/Sr） methods. The paper discussed some important issues related to salt production, including the source of the brine and the formative temperature of the salt. It is also indicted that the calcareous and magnesia remains appearing in the site are the most important chemical evidences to judge whether a site is related to salt producing. The results of the comprehensive analyses helped us to understand the workflows of the salt industry in ancient times, especially the Shang and Zhou Dynasties. In the Shang and Zhou Dynasties, the material for producing salt was brine drawn from the wells, which was simmered by gentle flame in helmet-shaped pottery wares, the evaporating temperature was about 60℃. In the Song and Yuan Dynasties, the material was also brine drawn from the wells, but the heating vessel was iron pans and the formative temperature of the salt could be as high as 100℃.