Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Converter tapping hole gunning mix and preparation method thereof
The invention provides a gunning mix for a tapping hole of a converter. The gunning mix comprises the following components in parts by weight: 65-75 parts of magnesium-containing waste; 20 to 30 partsby weight of fused skin sand; 1.5 to 2.5 parts by weight of phosphate; 1-2 parts by weight of slaked lime; 0.25 to 0.75 part by weight of silica fume; and 0.3-0.7 part by weight of a sintering agent,wherein the content of MgO in the magnesium-containing waste is not lower than 80%. Compared with the prior art, the gunning material has the advantages that the magnesium-containing waste is used asaggregate, the fused skin sand is added to promote sintering of a matrix phase of the gunning material, phosphate is used as a binding agent to enable the gunning material to have high strength at medium and low temperatures, and meanwhile silica fume is added into the gunning material to fill part of gaps of the matrix and compact the gunning material; and the additive can react with MgO and CaOat a high temperature to generate high-temperature phases such as forsterite or calcium forsterite, so that the slag corrosion resistance of the gunning material is improved, and the gunning materialhas the advantages of low cost, moderate volume density, high sintering speed, moderate sintering strength, easiness in drilling and long service life.
本发明提供了一种转炉出钢口喷补料，包括：含镁废料65～75重量份；电熔皮砂20～30重量份；磷酸盐1.5～2.5重量份；熟石灰1～2重量份；硅灰0.25～0.75重量份；烧结剂0.3～0.7重量份；所述含镁废料中MgO含量不低于80％。与现有技术相比，本发明以含镁废料为骨料，加入电熔皮砂促进喷补料基质相的烧结，以磷酸盐为结合剂使喷补料在中、低温具有较高的强度，同时喷补料中添加硅灰填充基质部分间隙，密实喷补料，还可在高温下与MgO、CaO反应生成镁橄榄石或钙镁橄榄石等高温相，提高喷补料抗渣侵蚀性能，从而使喷补料具有成本低、体积密度适中、烧结快、烧结强度适中、易于钻孔和使用寿命长的优点。
Converter tapping hole gunning mix and preparation method thereof
The invention provides a gunning mix for a tapping hole of a converter. The gunning mix comprises the following components in parts by weight: 65-75 parts of magnesium-containing waste; 20 to 30 partsby weight of fused skin sand; 1.5 to 2.5 parts by weight of phosphate; 1-2 parts by weight of slaked lime; 0.25 to 0.75 part by weight of silica fume; and 0.3-0.7 part by weight of a sintering agent,wherein the content of MgO in the magnesium-containing waste is not lower than 80%. Compared with the prior art, the gunning material has the advantages that the magnesium-containing waste is used asaggregate, the fused skin sand is added to promote sintering of a matrix phase of the gunning material, phosphate is used as a binding agent to enable the gunning material to have high strength at medium and low temperatures, and meanwhile silica fume is added into the gunning material to fill part of gaps of the matrix and compact the gunning material; and the additive can react with MgO and CaOat a high temperature to generate high-temperature phases such as forsterite or calcium forsterite, so that the slag corrosion resistance of the gunning material is improved, and the gunning materialhas the advantages of low cost, moderate volume density, high sintering speed, moderate sintering strength, easiness in drilling and long service life.
本发明提供了一种转炉出钢口喷补料，包括：含镁废料65～75重量份；电熔皮砂20～30重量份；磷酸盐1.5～2.5重量份；熟石灰1～2重量份；硅灰0.25～0.75重量份；烧结剂0.3～0.7重量份；所述含镁废料中MgO含量不低于80％。与现有技术相比，本发明以含镁废料为骨料，加入电熔皮砂促进喷补料基质相的烧结，以磷酸盐为结合剂使喷补料在中、低温具有较高的强度，同时喷补料中添加硅灰填充基质部分间隙，密实喷补料，还可在高温下与MgO、CaO反应生成镁橄榄石或钙镁橄榄石等高温相，提高喷补料抗渣侵蚀性能，从而使喷补料具有成本低、体积密度适中、烧结快、烧结强度适中、易于钻孔和使用寿命长的优点。
Converter tapping hole gunning mix and preparation method thereof
一种转炉出钢口喷补料及其制备方法
ZHU XINJUN (Autor:in) / TANG ANSHAN (Autor:in) / ZENG LIMIN (Autor:in) / LIU LIHUA (Autor:in)
29.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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