A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Directional heat-conducting carbon ramming material and preparation method thereof
The invention discloses a directional heat-conducting carbon ramming material which comprises the following components in percentage by mass: 40-50wt% of graphite electrode crushed waste; 3-12 wt% of flake graphite; 25-35 wt% of graphite powder; and 15-20 wt% of coal tar. The method comprises the following steps: firstly, stirring the crushed graphite electrode waste and flake graphite in a stirrer at a medium speed for 3-5 minutes; adding about half of coal tar, and conducting stirring at a medium speed for 5-10 minutes; adding graphite powder, conducting stirring at a medium speed for 5-10 minutes, and then conducting stirring at a high speed for 5-10 minutes; and finally, adding the residual coal tar, and conducting stirring at a high speed for 10-15 minutes to reach a ramming forming state, so as to obtain the directional heat-conducting carbon ramming material. The raw materials adopted by the invention have the characteristics of stable property, wide source and low price, the process is simple, energy-saving and environment-friendly, and the prepared carbon ramming material has certain buffer performance, can absorb expansion generated by heating of carbon bricks after low-temperature curing, and avoids cracking of a furnace shell. A blast furnace is effectively cooled by utilizing the directional heat-conducting property, so that the long-term stable operation of the blast furnace is guaranteed.
本发明公开了一种定向导热碳素捣打料，组成按质量百分数计如下：石墨电极碎废料40～50wt％；磷片石墨3～12wt％；石墨粉25～35wt％；煤焦油15～20wt％。先将石墨电极碎废料、磷片石墨在搅拌机中进行中速搅拌3‑5min；然后加入大约一半的煤焦油中速搅拌5‑10min；再加入石墨粉先中速搅拌5‑10min，后高速搅拌搅拌5‑10min；最后加入剩余的煤焦油，高速搅拌10‑15min达到捣打成型的状态，得到定向导热碳素捣打料。本发明所采用的原料具有性质稳定、来源广泛和价格低廉的特点，不仅工艺简单、节能环保，而且所制得的碳素捣打料具有一定的缓冲性能，能在低温固化后吸收碳砖因受热产生的膨胀，避免炉壳开裂，还利用了定向的导热性能对高炉进行有效的冷却，保障高炉的长期稳定运行。
Directional heat-conducting carbon ramming material and preparation method thereof
The invention discloses a directional heat-conducting carbon ramming material which comprises the following components in percentage by mass: 40-50wt% of graphite electrode crushed waste; 3-12 wt% of flake graphite; 25-35 wt% of graphite powder; and 15-20 wt% of coal tar. The method comprises the following steps: firstly, stirring the crushed graphite electrode waste and flake graphite in a stirrer at a medium speed for 3-5 minutes; adding about half of coal tar, and conducting stirring at a medium speed for 5-10 minutes; adding graphite powder, conducting stirring at a medium speed for 5-10 minutes, and then conducting stirring at a high speed for 5-10 minutes; and finally, adding the residual coal tar, and conducting stirring at a high speed for 10-15 minutes to reach a ramming forming state, so as to obtain the directional heat-conducting carbon ramming material. The raw materials adopted by the invention have the characteristics of stable property, wide source and low price, the process is simple, energy-saving and environment-friendly, and the prepared carbon ramming material has certain buffer performance, can absorb expansion generated by heating of carbon bricks after low-temperature curing, and avoids cracking of a furnace shell. A blast furnace is effectively cooled by utilizing the directional heat-conducting property, so that the long-term stable operation of the blast furnace is guaranteed.
本发明公开了一种定向导热碳素捣打料，组成按质量百分数计如下：石墨电极碎废料40～50wt％；磷片石墨3～12wt％；石墨粉25～35wt％；煤焦油15～20wt％。先将石墨电极碎废料、磷片石墨在搅拌机中进行中速搅拌3‑5min；然后加入大约一半的煤焦油中速搅拌5‑10min；再加入石墨粉先中速搅拌5‑10min，后高速搅拌搅拌5‑10min；最后加入剩余的煤焦油，高速搅拌10‑15min达到捣打成型的状态，得到定向导热碳素捣打料。本发明所采用的原料具有性质稳定、来源广泛和价格低廉的特点，不仅工艺简单、节能环保，而且所制得的碳素捣打料具有一定的缓冲性能，能在低温固化后吸收碳砖因受热产生的膨胀，避免炉壳开裂，还利用了定向的导热性能对高炉进行有效的冷却，保障高炉的长期稳定运行。
Directional heat-conducting carbon ramming material and preparation method thereof
一种定向导热碳素捣打料及其制备方法
HU JIN (author) / CHENG SHUIMING (author) / XIANG BING (author) / CONG PEIYUAN (author)
2021-05-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
Ramming material for ferrosilicon ladle and preparation method of ramming material
| European Patent Office | 2022
| European Patent Office | 2023