Method of agglomerating particulate material |
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| 申请号 | US24517372 | 申请日 | 1972-04-18 | 公开(公告)号 | US3867490A | 公开(公告)日 | 1975-02-18 |
| 申请人 | BOLIDEN AB; | 发明人 | GORLING KARL GORAN; | ||||
| 摘要 | A method of compacting particulate material into agglomerates, in which at least a portion of the cylindrical surface of at least one roll in a pair of compacting rolls is coated with a layer of particulate magnetic material which is retained on the roll surface by means of magnetic forces. | ||||||
| 权利要求 | 1. A METHOD OF AGGLOMERATING PARTICULATE MATERIAL BY COMPACTING THE MATERIAL BETWEEN CO-ACTING ROLLS FORMING A ROLL NIP WHEREIN SURFACE WERE ON THE ROLLS IS SUBSTANTIALLY REDUCED, COMPRISING: A. COATING AT LEAST A PORTION OF AT LEAST ONE ROLL ON THE SIDE OF THE ONE ROLL WHERE THE MATERIAL PASSES INTO SAID NIP WITH A LAYER OF A FIRST PARTICULATE MAGNETIC MATERIAL AND RETAINING SAID LAYER ON SAID PORTION OF SAID ROLL BY MAGNETIC FORCES; B. POSITIVELY GUIDING A SECOND PARTICULATE MATERIAL INTO CONTACT WITH SAID LAYER OF FIRST PARTICULATE MAGNETIC MATERIAL; AND C. PASSING SAID FIRST AND SECOND MATERIALS THROUGH SAID ROLL NIP AND UNDER PRESSURE TO COMPACT SAID MATERIALS AND FORM A COHERENT CAKE THEREOF, AND D. DISINTEGRATING SAID COHERENT CAKE AFTER SAID ROLL NIP TO FORM SAID CAKE INTO AGGLOMERATE OF SAID PARTICULATE MATERIALS. 2. A method according to claim 1, wherein said second material is magnetic and at least a portion of the second material forms said layer of first material, the remaining portion being material to be agglomerated. 3. A method according to claim 1, wherein said second material is substantially nonmagnetic and removing said layer of first material from said one roll passing through said roll nip, and successively applying to said one roll magnetic material forming said layer of first material to prevent a surface of said one roll from contacting the substantially nonmagnetic material. 4. A method according to claim 1, wherein said second material is substantially nonmagnetic and including mixing the first magnetic material forming said layer with the substantially nonmagnetic material. |
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