| 摘要 |
<p>Process for transforming the residues left after treatment without chroming and the products thereby obtained, based on the process of homogenising (2) the raw material (1), which consists of the leftovers of the tanning industry, such as remnants of skin with hair, trimmings, suede, etc.. A mineral acid (3) is added to the mixture, as are semi-metals and metals (4) with a valency of 0, phenol and phenolate (15). The mixture is put in a pressure vessel (5) and is filtered (6) to separate the liquid portion (7) and the solid part (9), which can be neutralised (10) or treated with micro organisms (13). This process is intended to be used in the leather and fur industry as well as in agriculture. <IMAGE></p> |
