A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Chromium-free fireclay for ladle sliding plate nozzle and preparation method thereof
The invention provides a chromium-free fireclay for a ladle sliding plate nozzle, and fused white corundum can improve the high temperature resistance of the finally obtained chromium-free fireclay; under the combined action of the sintered tabular corundum and the alpha-Al2O3 powder, the medium-high temperature linear change rate of the chromium-free fireclay is greatly reduced; the high-temperature thermal shock stability of the chromium-free fireclay is remarkably improved by adding the fused spinel; white mud, yellow dextrin, carboxymethyl cellulose sodium, a polycarboxylate superplasticizer, sodium hexametaphosphate, sodium tripolyphosphate and aluminum dihydrogen phosphate act together, on the one hand, chromium oxide is replaced to play a role of a binding agent, mutual fusion of other components is promoted, the strength of the chromium-free fireclay is improved, on the other hand, in the using process, the using performance of the chromium-free fireclay is guaranteed in the initial using stage, part of the components are decomposed at high temperature, so that the high temperature resistance and the mechanical property of the chromium-free fireclay are not influenced. Through interaction of all the components, the obtained chromium-free fireclay has the excellent performance of small linear change rate, high breaking strength and high compression strength.
本发明提供一种钢包滑板水口用无铬火泥，其中电熔白刚玉能够提升最终得到的无铬火泥的耐高温性能；烧结板状刚玉和α‑Al2O3粉共同作用，大大降低无铬火泥的中高温线变化率；电熔尖晶石的加入显著提高无铬火泥的高温热震稳定性能；白泥、黄糊精、羟甲基纤维素钠、聚羧酸减水剂、六偏磷酸钠、三聚磷酸钠、磷酸二氢铝共同作用，一方面代替氧化铬起到结合剂的作用，促进其他组分相互融合，提高无铬火泥的强度，另一方面，其在使用过程中，使用初期保证无铬火泥的使用性能，在高温下部分组分被分解，不影响无铬火泥的耐高温性能及机械性能。本发明通过各组分相互作用，得到的无铬火泥具有线变化率小，抗折强度高，耐压强度高的优良性能。
Chromium-free fireclay for ladle sliding plate nozzle and preparation method thereof
The invention provides a chromium-free fireclay for a ladle sliding plate nozzle, and fused white corundum can improve the high temperature resistance of the finally obtained chromium-free fireclay; under the combined action of the sintered tabular corundum and the alpha-Al2O3 powder, the medium-high temperature linear change rate of the chromium-free fireclay is greatly reduced; the high-temperature thermal shock stability of the chromium-free fireclay is remarkably improved by adding the fused spinel; white mud, yellow dextrin, carboxymethyl cellulose sodium, a polycarboxylate superplasticizer, sodium hexametaphosphate, sodium tripolyphosphate and aluminum dihydrogen phosphate act together, on the one hand, chromium oxide is replaced to play a role of a binding agent, mutual fusion of other components is promoted, the strength of the chromium-free fireclay is improved, on the other hand, in the using process, the using performance of the chromium-free fireclay is guaranteed in the initial using stage, part of the components are decomposed at high temperature, so that the high temperature resistance and the mechanical property of the chromium-free fireclay are not influenced. Through interaction of all the components, the obtained chromium-free fireclay has the excellent performance of small linear change rate, high breaking strength and high compression strength.
本发明提供一种钢包滑板水口用无铬火泥，其中电熔白刚玉能够提升最终得到的无铬火泥的耐高温性能；烧结板状刚玉和α‑Al2O3粉共同作用，大大降低无铬火泥的中高温线变化率；电熔尖晶石的加入显著提高无铬火泥的高温热震稳定性能；白泥、黄糊精、羟甲基纤维素钠、聚羧酸减水剂、六偏磷酸钠、三聚磷酸钠、磷酸二氢铝共同作用，一方面代替氧化铬起到结合剂的作用，促进其他组分相互融合，提高无铬火泥的强度，另一方面，其在使用过程中，使用初期保证无铬火泥的使用性能，在高温下部分组分被分解，不影响无铬火泥的耐高温性能及机械性能。本发明通过各组分相互作用，得到的无铬火泥具有线变化率小，抗折强度高，耐压强度高的优良性能。
Chromium-free fireclay for ladle sliding plate nozzle and preparation method thereof
一种钢包滑板水口用无铬火泥及其制备方法
CUI TAI (author) / JIA XIANGCHAO (author) / ZHAO LIMING (author) / AN YONGCHAO (author)
2021-06-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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