Method for treating a fibre suspension flow

文档序号:1642979 发布日期:2019-12-20 浏览:48次 中文

阅读说明:本技术 用于处理纤维悬浮液流的方法 (Method for treating a fibre suspension flow ) 是由 L.弗里德里希 A.沃尔穆思 T.鲁尔 F.阿尔布雷克特 C.亚当斯 于 2018-04-12 设计创作,主要内容包括:本发明涉及一种用于处理至少部分由废纸、尤其是OCC形成的纤维悬浮液流的方法,其至少包括溶解并包括用于形成长纤维馏份流(2)和第一短纤维馏份流(3.1)的分馏级(13),其中,长纤维馏份流(2)被引导至第一研磨级(15.2)并且被研磨。根据本发明的方法的特征在于,第一短纤维馏份流(3.1)优选直接被引导至用于形成第一精细材料-填料流(4.1)和第二短纤维馏份流(3.2)的分离级(14)中,并且至少一部分第一精细材料-填料流(4.1)被引导至研磨级(15.4)并且被研磨,和/或至少一部分第二短纤维馏份流(3.2)被引导至研磨级(15.4)和/或另外的研磨级(15.3)并且被研磨。(The invention relates to a method for treating a fibre suspension flow formed at least partially from waste paper, in particular OCC, comprising at least one fractionation stage (13) for forming a long fibre fraction flow (2) and a first short fibre fraction flow (3.1), wherein the long fibre fraction flow (2) is conducted to a first grinding stage (15.2) and ground. The method according to the invention is characterized in that the first short fiber fraction stream (3.1) is preferably directly conducted to a separation stage (14) for forming a first fine material filler stream (4.1) and a second short fiber fraction stream (3.2), and at least a part of the first fine material filler stream (4.1) is conducted to a grinding stage (15.4) and ground, and/or at least a part of the second short fiber fraction stream (3.2) is conducted to the grinding stage (15.4) and/or a further grinding stage (15.3) and ground.)

1. A method for treating a fibre suspension flow formed at least in part from waste paper, in particular OCC, said process comprising at least a fractionation stage (13) for forming a long fiber fraction stream (2) and a first short fiber fraction stream (3.1), wherein the long fiber fraction stream (2) is conducted to a first grinding stage (15.2) and ground, characterized in that the first short fiber fraction stream (3.1) is conducted, preferably directly, to a separation stage (14) for forming a first fine material-filler stream (4.1) and a second short fiber fraction stream (3.2), and at least a part of the first fine material filler flow (4.1) is conducted to a grinding stage (15.4) and ground, and/or at least a part of the second staple fiber fraction stream (3.2) is conducted to the grinding stage (15.4) and/or to a further grinding stage (15.3) and ground.

2. The method according to claim 1, characterized in that the second short fiber fraction stream (3.2) is conducted to a separation stage (13.3) for forming a short fiber fraction stream (3) and a short fiber fraction substream (3.3), and the short fiber fraction substream (3.3) is ground in the grinding stage (15.4) and/or a further grinding stage (15.3).

3. The method according to claim 2, characterized in that the short fiber fraction substream (3.3) is ground with high fiberization in the grinding stage (15.4) or in a further grinding stage (15.3).

4. A method according to claim 2 or 3, characterized in that the entire first fine material-filler flow (4.1) is conducted to the grinding stage (15.4) and ground together with the short fiber fraction substream (3.3) with the formation of the fine material-filler flow (4).

5. The method according to claim 2 or 3, characterized in that the first fine material-filler stream (4.1) is conducted to a further separation stage (13.4) for forming a first fine material-filler substream (4.2) and a second fine material-filler substream (4.3), and that the second fine material-filler substream (4.3) and the short fiber fraction substream (3.3) are ground together in the grinding stage (15.4).

6. The method according to claim 5, characterized in that the first substream of fine material-filler (4.2) is subsequently fed in turn to a substream of short fiber fraction (3.3) and a second substream of fine material-filler (4.3) with formation of a fine material-filler stream (4).

7. The method according to claim 2 or 3, characterized in that at least a part, preferably all, of the first fine material filler flow (4.1) is conducted to the grinding stage (15.4) and ground, and that a short fiber fraction substream (3.3) ground in a further grinding stage (15.3) is fed into the ground first fine material filler flow (4.1) after the grinding stage (15.4) with the formation of the fine material filler flow (4).

8. The method according to claim 1, characterized in that the second short fiber fraction stream (3.2) is not ground and forms the short fiber fraction stream (3) and the ground first fine material-filler stream (4.1) forms the fine material-filler stream (4).

9. The method according to claim 1, characterized in that the first fine material-filler stream (4.1) is not ground and forms the fine material-filler stream (4) and the ground second short fiber fraction stream (3.2) forms the short fiber fraction stream (3).

10. The process according to any of the preceding claims, characterized in that the first short fiber fraction stream (3.1) is directed to a grinding stage and ground.

11. Method according to any of the preceding claims, characterized in that fresh fibres and/or fillers are added in order to influence the grinding result of the first grinding stage (15.2) and/or the further grinding stage (15.3) and/or the grinding stage (15.4).

12. The method according to any of the preceding claims, characterized in that a long fiber fraction stream (2), a short fiber fraction stream (3) and a fine material-filler stream (4) of a charge for a paper machine (9) are formed.

13. The process according to claim 10, characterized in that the additional auxiliary materials added to the long fiber fraction stream (2) or the short fiber fraction stream (3) or the fine material-filler stream (4) are selected from the group consisting of: fillers, highly fiberized fibers, especially highly fiberized staple fibers, strength-enhancing additives, retention agents, virgin fibers.

14. The method according to any of the preceding claims, characterized in that the paper machine (9) comprises a headbox (11) and that the long fiber fraction stream (2) and the short fiber fraction stream (3) and the fine material-filler stream (4) are mixed and fed to the headbox (11).

15. The method according to any of the preceding claims, characterized in that the paper machine (9) comprises a multi-layer headbox (11) with a middle layer arranged between at least two outer layers, and that the long fiber fraction stream (2) and the short fiber fraction stream (3) are mixed and directed into the outer layers, and that the fine material-filler stream (4) is fed into the middle layer.

16. An apparatus for carrying out the process according to claim 1, comprising a dissolving stage and a fractionation stage (13) for forming a long fiber fraction stream (2) and a first short fiber fraction stream (3.1) and a first grinding stage (15.2) for grinding the long fiber fraction stream (2), characterized in that a separation stage (14) for dividing the first short fiber fraction stream (3.1) into a first fine material-filler stream (4.1) and a second short fiber fraction stream (3.2) is provided, and a grinding stage (15.4) for grinding at least a part of the first fine material-filler stream (4.1) and/or a grinding stage (15.4) and/or a further grinding stage (15.3) for grinding at least a part of the second short fiber fraction stream (3.2) is provided.

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