Abstract
The author compared heavy oil with rape oil for oil sand and results obtained are as follows : In the case of the constant volume of Kibushi-clay (1) the maximum strength is obtained at the drying temperature 200°C with Ozin (a lignin binder) and with soya oil, and at 300°C with heavy oil. (2) With soya oil the drying time is 1½ hours at 200°C and with heavy oil 4½ hours at 250°C or 2½ hours at 300°C. With the latter the drying temperature and itsti me are controlled less than those with the former. (3) Heavy oil enables sand to reduce the using volume of fine grain sand and give better permeability and higher strengths. (4) Water, heavy oil and soya oil absorb less moisture one after another and the difference between heavy oil and soya oil is little. (M. Ichida)
