金門島上覆紅土的開發利用

Exploitation and Utilization of the Lateritic Soil on Chinmen Islands

顏富士(Fu-Su Yen) ； 蔡四山(Shyh Shan Tsay)

《鑛冶：中國鑛冶工程學會會刊》 30卷2期 (1986/06) Pp. 13-26

https://doi.org/10.30069/MM.198606_30(2).0001

摘要

本研究包括下列工作：1.瞭解金門島上覆紅土之開發利用方向。2.由紅土中提選紙業級填充料高嶺土之方法。3.建立先導工廠之操作流程。經由本研究顯示：由紅土中可提出（1）紙業級高嶺土、（2）釉藥用及鑄造用特級石英砂、及（3）一般瓷土。而第（1）項產品之獲得主要在有效分離出細於10μm的高嶺土及提昇此一高嶺土之白度。本研究曾採多種方法進行白度提昇試驗，結果顯示，以2N鹽酸，90℃時最為有效。將高嶺土浸漬4至6小時後可獲得80%（75G.E）以上之白土。84%白度也為此等高嶺土可獲得之白度極限。經由本研究此一紅土將可完全加以利用。

並列摘要

The study consists of three tests: 1. To allocate the possible uses of the lateritic soil on Chinmen Islands. 2. To find methods of beneficiating the soil for paper-filler grade kaolinite. 3. To prepare a flow-sheet of beneficiation in order to conduct a pilot-plant test in the future. The study concludes that the lateritic soil can be a source of providing (1) kaolinite powders for paper industry, (2) high-quality quartz sand for ceramic glaze and foundry, and (3) china clay used in traditional porcelains. The paper fillers can be obtained by separating the -10μm portion (mainly kaolin minerals) from the soil accompanied by a bleaching process in which the separated material is treated with 2N HCl solution and heated at 90°C for 4- to 6- hrs. The whiteness of the beneficiated clay is above 80% (75 G. E.), 84% (80 G. E.) being the optimum. The study also points out the lateritic soil can be fully utilized.