Joint ramming cement for electrolytic reduction cell cathodes专利检索-烟煤煤燃料能源燃料种类专利检索查询-专利查询网

Joint ramming cement for electrolytic reduction cell cathodes

阅读：668发布：2023-04-15

专利汇可以提供Joint ramming cement for electrolytic reduction cell cathodes专利检索，专利查询，专利分析的服务。并且A ramming cement suitable for joining a plurality of adjacent carbon blocks having joint spaces between them to form a continuous cell lining structure for an electrolytic cell, such as an aluminum reduction cell, is prepared from a mixture of a petroleum pitch having a cube-in-water softening point between about 40* and about 85*C, and containing not more than about 1% of quinoline-insoluble material, and an aggregate such as calcined anthracite.，下面是Joint ramming cement for electrolytic reduction cell cathodes专利的具体信息内容。

权利要求

1. PROCESS FOR FORMING THE CATHODE LINING OF AN ELECTROLYTIC CELL, SAID LINING BEING MADE UP OF ADJACENT CARBONACEOUS BLOCKS HAVING JOINT SPACES THEREBETWEEN, COMPRISING THE STEPS OF INTRODUCING INTO SAID JOINT SPACES A RAMMING CEMENT COMPRISING A MIXTURE OF PITCH AND A CARBONACEOUS AGGREGATE, AT A TEMPERATURE SUFFICIENT TO MAINTAIN SUITABLE CONSISTENCY FOR COMPACTING THE CEMENT IN SAID SPACES, AND THEN BAKING THE BLOCKS AND CEMENTED JOINTS AT A TEMPERATURE AND FOR A PERIOD OF TIME SUFFICIENT TO CARBONIZE THE CEMENT AND TO FORM A CONTINUOUS LINING STRUCTURE, SAID MIXTURE CONTAINING FROM ABOUT 13 TO ABOUT 16.5% BY WEIGHT OF PETROLEUM PITCH CHARACTERIZED BY HAVING A CUBE-IN-WATER SOFTENING POINT BETWEEN ABOUT 40* AND ABOUT 85*C. AND HAVING A CONTENT OF MATERIAL INSOLUBLE IN QUINOLINE NOT GREATER THAN ABOUT 1%.

2. The process of claim 1 in which said electrolytic cell is an aluminum reduction cell.

3. The process of claim 1 in which said aggregate is calcined anthracite.

4. The process of claim 1 in which said aggregate is a mixture of calcined anthracite and calcined metallurgical coke.

5. The process of claim 1 in which said aggregate is predominantly finely divided material of which about 50% passes a 200 mesh screen.

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Joint ramming cement for electrolytic reduction cell cathodes

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