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Single-field anhydrous stemming for high-strength smelting small blast furnace as well as preparation method and application of single-field anhydrous stemming
The invention discloses single-field anhydrous stemming for a high-strength smelting small blast furnace as well as a preparation method and application of the single-field anhydrous stemming. The raw materials comprise, by mass, 20-30% of refractory aggregate, 10-20% of refractory fine powder, 8-15% of soft binding clay, 7-12% of feldspar powder, 15-20% of coke foam, 15-25% of an anti-erosion agent, 1-5% of waste high thermal conductivity graphite electrode powder, 0.5-2% of phenolic resin powder, and 3-8% of high temperature modified asphalt; the raw materials are mixed according to the proportion, tar serves as a binding agent, mud is discharged after the mixture is mixed and ground to a proper state, and the anhydrous stemming is obtained through mud extrusion forming. And the anhydrous stemming is transferred to a site, and is put into the furnace from an iron notch channel by using a mud gun machine to form a mud drum on the furnace wall. The water-free stemming has the advantages of favorable mud making performance, high curing speed, short blasting time, favorable sintering property, no dense smoke in the tapping process, basically no need of baking an iron notch, 25-30 minutes of tapping interval, short splashing time and favorable scouring and erosion resistance, and can meet the harsh requirements of high-strength smelting of small blast furnaces on the water-free stemming.
本发明公开了一种高强冶炼小高炉用单场无水炮泥及其制备方法和应用。原料按质量百分比计包括：耐火骨料20～30％、耐火细粉10～20％、软质结合粘土8～15％、长石粉7～12％、焦炭沫15～20％、抗侵蚀剂15～25％、废高导热石墨电极粉1～5％、酚醛树脂粉0.5～2％、高温改质沥青3～8％；按上述配比混合，焦油作结合剂，混碾到合适状态后出泥、挤泥成型得无水炮泥；将其运至现场用泥炮机从铁口通道打入炉内，在炉墙上形成泥包。本发明打泥性能良好，固化速度快、撤炮时间短，烧结性能好，开口过程不冒浓烟、基本不用烤铁口，出铁间隔25～30min，喷溅时间短，炮泥耐冲刷和侵蚀性好，能满足小高炉高强冶炼对无水炮泥的苛刻要求。
Single-field anhydrous stemming for high-strength smelting small blast furnace as well as preparation method and application of single-field anhydrous stemming
The invention discloses single-field anhydrous stemming for a high-strength smelting small blast furnace as well as a preparation method and application of the single-field anhydrous stemming. The raw materials comprise, by mass, 20-30% of refractory aggregate, 10-20% of refractory fine powder, 8-15% of soft binding clay, 7-12% of feldspar powder, 15-20% of coke foam, 15-25% of an anti-erosion agent, 1-5% of waste high thermal conductivity graphite electrode powder, 0.5-2% of phenolic resin powder, and 3-8% of high temperature modified asphalt; the raw materials are mixed according to the proportion, tar serves as a binding agent, mud is discharged after the mixture is mixed and ground to a proper state, and the anhydrous stemming is obtained through mud extrusion forming. And the anhydrous stemming is transferred to a site, and is put into the furnace from an iron notch channel by using a mud gun machine to form a mud drum on the furnace wall. The water-free stemming has the advantages of favorable mud making performance, high curing speed, short blasting time, favorable sintering property, no dense smoke in the tapping process, basically no need of baking an iron notch, 25-30 minutes of tapping interval, short splashing time and favorable scouring and erosion resistance, and can meet the harsh requirements of high-strength smelting of small blast furnaces on the water-free stemming.
本发明公开了一种高强冶炼小高炉用单场无水炮泥及其制备方法和应用。原料按质量百分比计包括：耐火骨料20～30％、耐火细粉10～20％、软质结合粘土8～15％、长石粉7～12％、焦炭沫15～20％、抗侵蚀剂15～25％、废高导热石墨电极粉1～5％、酚醛树脂粉0.5～2％、高温改质沥青3～8％；按上述配比混合，焦油作结合剂，混碾到合适状态后出泥、挤泥成型得无水炮泥；将其运至现场用泥炮机从铁口通道打入炉内，在炉墙上形成泥包。本发明打泥性能良好，固化速度快、撤炮时间短，烧结性能好，开口过程不冒浓烟、基本不用烤铁口，出铁间隔25～30min，喷溅时间短，炮泥耐冲刷和侵蚀性好，能满足小高炉高强冶炼对无水炮泥的苛刻要求。
Single-field anhydrous stemming for high-strength smelting small blast furnace as well as preparation method and application of single-field anhydrous stemming
高强冶炼小高炉用单场无水炮泥及其制备方法和应用
ZHANG ZHENGFU (Autor:in) / YANG JING (Autor:in) / TIAN ZHIHONG (Autor:in) / QIAN YU (Autor:in) / TIAN JINGJING (Autor:in)
31.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Anhydrous stemming for light iron-making blast furnace and preparation method of anhydrous stemming
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