发明名称 |
VERFAHREN ZUR HERSTELLUNG VON CALCIUMCARBID |
摘要 |
1. Process for making calcium carbide from lime and a carbon carrier in a closed electrothermal furnace with a power of more than 20 megawatts, in which the electrodes are arranged symmetrically in the corners of an equilateral triangle, which comprises : using at least 40% of the total carbon component in the furnace burden in the form of a carbon carrier consisting of anthracite, petroleum coke and/or lean coal, the carbon carrier with an initial content of volatile constituents of more than 5.0% having been subjected to thermal pretreatment at increased temperature for as long as necessary to establish a residual content of volatile constituents of less than 5.0% and having been separated into a fraction consisting of particles with a size of 3 to 10 mm and into a fraction consisting of particles with a size of more than 10 up to 25 mm ; the fraction of smaller particles being introduced into a central region inside the furnace lying between the electrodes, and the fraction of larger particles being introduced into a peripheral region of the burden surface area inside the furnace which lies outside the triangle formed by the electrodes. |
申请公布号 |
DE3013726(A1) |
申请公布日期 |
1981.10.15 |
申请号 |
DE19803013726 |
申请日期 |
1980.04.10 |
申请人 |
HOECHST AG |
发明人 |
PORTZ,WILHELM,DIPL.-CHEM.DR.;STRAUSS,GEORG,DIPL.-CHEM.DR.;STENDEL,JOACHIM,DIPL.-CHEM.DR.;FRORATH,FRIEDRICH-KARL,DIPL.-CHEM.DR.;GOLDMANN,EDGAR,DIPL.-ING. |
分类号 |
B60T13/36;B60T13/58;B60T13/74;C01B31/32;H02K49/04 |
主分类号 |
B60T13/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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