| 摘要 |
<p>PT--79290 A The seeds are heated to a temp., not above 75 deg.C and the sulphuric acid poured in until around 95 deg.C is reached, when the mixt. is discharged and cooled to normal temp. It is left to stand for 20-60 hours, placed in a mixer with a stirrer and agitated at the same time adding hydrated lime so that rubbing of the seeds causes separation of the shells.</p> |
