| 发明名称 | Method for processing rubber granules or rubber powders | ||
| 摘要 | A method for processing rubber granules or rubber powders containing different types of rubber. Vehicle tires containing natural rubber in the tread and butyl rubber in the inner liner are granulated or ground to prepare rubber granules or rubber powders, which are processed in a flotation cell under stirring and with the addition of air. The natural rubber fraction of the rubber granules has a higher tendency to adsorb air bubbles and to rise in the flotation cell, while the butyl rubber fraction remains at the bottom. The rubber granules are separated into two or more rubber fractions with an increased amount of a specific rubber type in each fraction. | ||
| 申请公布号 | US9221060(B2) | 申请公布日期 | 2015.12.29 |
| 申请号 | US201313857015 | 申请日期 | 2013.04.04 |
| 申请人 | Continental Reifen Deutschland GmbH | 发明人 | Theusner Martin |
| 分类号 | B29B17/02;B02C23/08;C08L7/00;C08L23/22;C08L23/28;B29K7/00;B29K21/00;B29K705/12;B29L30/00 | 主分类号 | B29B17/02 |
| 代理机构 | Walter Ottesen P.A. | 代理人 | Walter Ottesen P.A. |
| 主权项 | 1. A method for processing a mixture of particles of natural rubber and at least one of a butyl rubber and a halobutyl rubber, the method comprising: providing the mixture of particles as a granulated rubber or as a powdered rubber; suspending the mixture of particles in a liquid to form a suspension; optionally, adding a flotation agent to the suspension; injecting a gas into the suspension; stirring the suspension with a stirrer; and, separating the natural rubber from the at least one of the butyl rubber and the halobutyl rubber by flotation based on a difference in surface wettability of the particles. | ||
| 地址 | Hannover DE | ||