石炭燃料による焼成硼素苦土珪酸肥料の製造法に関する研究

昭和45年11月5目第7回石炭科学会議講演

抄録

In our country there have been recently found many localities where the crop plants revealed the symptoms of the deficiency in special elements beside three manureal elements.
According to the investigation of Ministry of Agriculture and Forestry, the Presume area of deficient in special elements was found 500, 000 hectares in the total, the area, deficient in magnesium, was found the largest, 240, 000 hectares in total, and it was followed by those, deficient in boron or silicium respectively in the order. These presume areas have been expected to increase their number after the more precise investigation.
In relation to the amelioration of these soils, various materials have been proposed to be applied, but they have had always more or less defects in their quality. In order to get rid of these defects the author made studies, here reported, on various factors and conditions, by which several fertilizer were prepared. As to this preparation a special consideration was paid in supplying the special elements from the domestic resources, of no utility.
It is the major objective of this research to promote the development of new markets for coal minerals in the domestic coal (Montmorillonite-chlorite=Na-K-Ca-Mg-Al-Si-O-OH-H₂O=ASTM card No.12-231, Halloysite hydrated=Al₂Si₂O₅ (OH) ₄·2H₂O=ASTM card No.9-451, Kaolinite=Al₂Si₂O₅ (OH) ₄=ASTM card No.14-164) and serpentine (Deweylite= (Mg, Fe) ₃ (Si, Al) ₃O₇ (OH) ₄·4H₂O=ASTM card No.13-532, serpentine=Mg₃Si₂O₅ (OH) ₄=ASTM card No.9-444, Aluminian serpentine=Mg-Al-Si-Al-O-OH=ASTM card No.12-583) in Japan and to advance its use in the existing markets.
Many different research projects have been undertaken to accomplish these aims.