| 摘要 |
<p>Base product comprises mineralized sawdust and a binding agent. Sawdust is impregnated with a solution of a sulphate of iron, zinc, copper, titanium or nickel in a concentration according to the volume of impregnation water of 5 to 150%. An addition of basic salt or a mixture of a base and a basic salt is continued until the mass attains a pH between 8 and 13, ideally close to 13. Use: Manufacturing light construction materials consisting principally of sawdust, heavy metal sulphate and a basic salt used alone or mixed with a base.</p> |
