CN105237007A - Iron-making tap-hole clay and preparation method therefor - Google Patents
Iron-making tap-hole clay and preparation method therefor Download PDFInfo
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- CN105237007A CN105237007A CN201510735398.8A CN201510735398A CN105237007A CN 105237007 A CN105237007 A CN 105237007A CN 201510735398 A CN201510735398 A CN 201510735398A CN 105237007 A CN105237007 A CN 105237007A
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Abstract
The invention discloses iron-making tap-hole clay and a preparation method therefor. The iron-making tap-hole clay is characterized in that the iron-making tap-hole clay consists of the following components in parts by weight: 15-20 parts of 3-0 mm chromohercynite, 5-8 parts of 1-0 mm bonite, 10-15 parts of 1-0 mm sillimanite; 8-15 parts of 0.5-0 mm magnesium iron oxide, 8-13 parts of clay powder, 3-7 parts of cobalt aluminum oxide powder, 5-10 parts of cutting powder, 7-25 parts of crystalline graphite powder, 5-10 parts of composite carbon powder, 0-1 part of strontium carbonate powder and 1-2 parts of moderate temperature asphalt powder. The stemming can maintain a tap hole aperture stable and changeless and is stable to tap. Besides, during long-term storage of the stemming, using and operating performances are not decreased.
Description
Technical field
The invention belongs to blast furnace ironmaking plastic refractory field, be specifically related to a kind of ironmaking taphole clay and preparation method.
Background technology
Blast furnace is the main equipment of smelting molten iron, and after blast-furnace smelting iron, needs molten iron to release through blast furnace iron notch to carry out continuously to ensure to smelt, and iron notch must be blocked, blocks the material of iron notch, be taphole clay.At present, when smelting some particular iron ore such as containing the iron ore that vanadium titanium is high, because vanadium, titanyl compound fusing point are very high, it is higher than tapping temperature, can not be melted when tapping a blast furnace, and can be deposited on iron notch, cause tying thicker and thicker, cause the aperture of iron notch to change; Generally cannot process in time again iron notch under high temperature, the change of iron notch has had a strong impact on the stable of iron mouth and has tapped a blast furnace, shakiness when causing tapping a blast furnace, and very easily causes molten iron to run large stream, flame arrow, gives and arrange the production program that blast furnace normally taps a blast furnace to bring difficulty.
Summary of the invention
The object of this invention is to provide a kind of aperture that can ensure iron notch to stablize, can stablize and tap a blast furnace, taphole clay easy to use and production method thereof.
Above-mentioned technical purpose of the present invention is achieved by the following technical programs: a kind of ironmaking taphole clay, is characterized in that described ironmaking taphole clay is made up of the component of following weight part: 3-0mm chromohercynite: 15 ~ 20 parts; 1-0mm Bo Naite: 5 ~ 8 parts; 1-0mm sillimanite: 10 ~ 15 parts; 0.5-0mm magnesium oxide iron: 8 ~ 15 parts; Inclined clay powder: 8 ~ 13 parts; Cobalt oxide aluminium powder 3-7 part, cutting powder: 5 ~ 10 parts; Crystalline graphite powder: 7 ~ 25 parts, compound powdered carbon 5-10 part, 0 ~ 1 part, Strontium carbonate powder powder, mid-temperature pitch powder: 1 ~ 2 part; Additional modification tar: 13 ~ 16 parts; Described modification tar is that 100 parts of modification tar include 98 parts, tar, ethylene glycol 1 part, N-methyl pyrrole network alkane ketone 1 part, is that three kinds of materials mediations form.
Described compound powdered carbon is hard charcoal, sugar charcoal, the mixture of pitch coke weight ratio 1:2:7.
Described inclined clay powder reaches the substance A of more than 60% for first clay obtains weight ratio shared by the composition of metakaolin after Overheating Treatment, and substance A and white garnet, dextrin mix by weight 8.5:1.2:0.3, are inclined clay powder.
Described cutting powder is the cutting powder cutting silicon single crystal generation in monocrystalline silicon production process, and described main component is SiC50-70%; Elemental silicon 30-50%.
Further, described a kind of preparation method using taphole clay that smelts iron, is characterized in that adopting following processing method to obtain: the first step produces taphole clay, by 3-0mm chromohercynite: 15 ~ 20 parts; 1-0mm Bo Naite: 5 ~ 8 parts; 1-0mm sillimanite: 10 ~ 15 parts; 0.5-0mm magnesium oxide iron: 8 ~ 15 parts; Inclined clay powder: 8 ~ 13 parts; Cobalt oxide aluminium powder 3-7 part, cutting powder: 5 ~ 10 parts; Crystalline graphite powder: 7 ~ 25 parts, compound powdered carbon 5-10 part, 0 ~ 1 part, Strontium carbonate powder powder, mid-temperature pitch powder: 1 ~ 2 part, puts into wheeled mixing pan, first pre-mixing 15 minutes; Then 85% of modification tar total amount is added, wet stone roller 35 minutes; Add 15% remaining modification tar, rewetting grinds 15 minutes; Through taphole clay microtome, then through mud extruder, squeeze mud shaping, be as cold as room temperature after cutting section, the crowded mud temperature in this step is set as 55 DEG C; Second step joins basting agent, by zirconic acid calcium powder, crystalline graphite powder, potassium silicate solution by weight: 38:32:30 stirs and is made into Homogeneous phase mixing liquid and is basting agent, stand-by; 3rd step, smears surface by cooled taphole clay basting agent, reinstalls packing bag, be finished product after drying.
Beneficial effect of the present invention: the taphole clay adopting this technical scheme to produce and the used taphole clay of blast furnace contrast, use the iron notch aperture of taphole clay of the present invention very stable, there is not the situation that iron notch aperture obviously diminishes, also without the phenomenon of reaming, meet completely blast furnace normally tap a blast furnace produce needs, for iron and steel enterprise and user have saved cost, effectively can improve current blast furnace due to the varying aperture of iron notch thus the molten iron discharging caused is unstable, the easy race caused due to flowing molten iron instability when tapping a blast furnace is flowed greatly, the problems such as flame arrow.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment 1: a kind of for 2580m3 ironmaking taphole clay, is characterized in that described ironmaking taphole clay is made up of the component of following weight part: 3-0mm chromohercynite: 20 parts; 1-0mm Bo Naite: 8 parts; 1-0mm sillimanite: 15 parts; 0.5-0mm magnesium oxide iron: 15 parts; Inclined clay powder: 9 parts; Cobalt oxide aluminium powder 3 parts, cutting powder: 5 parts; Crystalline graphite powder: 14 parts, compound powdered carbon 9 parts, Strontium carbonate powder powder 1, part mid-temperature pitch powder: 1 part; The preparation method of taphole clay: above-mentioned raw materials is put into mixing pan, first pre-mixing 15 minutes; Prepare 13 parts, modification tar, first add 85% of modification tar total amount, wet stone roller 35 minutes; Add 15% remaining modification tar, rewetting grinds 15 minutes; Through taphole clay microtome, then shaping through squeezing mud, be as cold as room temperature after cutting section, the crowded mud temperature in this step is set as 55 DEG C; Second step joins basting agent, by zirconic acid calcium powder, and crystalline graphite powder, potassium silicate solution is made into Homogeneous phase mixing liquid by weight 38:32:30 stirring and is basting agent, stand-by; 3rd step, smears surface by cooled taphole clay basting agent, reinstalls packing bag, be finished product after drying.
Embodiment 2: a kind of for 3000m3 ironmaking taphole clay, is characterized in that described ironmaking taphole clay is made up of the component of following weight part: 3-0mm chromohercynite: 19 parts; 1-0mm Bo Naite: 7 parts; 1-0mm sillimanite: 14 parts; 0.5-0mm magnesium oxide iron: 15 parts; Inclined clay powder: 10 parts; Cobalt oxide aluminium powder 5 parts, cutting powder: 5 parts; Crystalline graphite powder: 18 parts, compound powdered carbon 6 parts, mid-temperature pitch powder: 1 part.The preparation method of taphole clay: all raw materials are put into mixing pan, first pre-mixing 15 minutes; Prepare 14 parts, modification tar, first add 85% of modification tar total amount, wet stone roller 35 minutes; Add 15% remaining modification tar, rewetting grinds 15 minutes; Through taphole clay microtome, then through mud extruder, squeeze mud shaping, be as cold as room temperature after cutting section, the crowded mud temperature in this step is set as 55 DEG C; Second step joins basting agent, by zirconic acid calcium powder, and crystalline graphite powder, potassium silicate solution is made into Homogeneous phase mixing liquid by weight 38:32:30 stirring and is basting agent, stand-by; 3rd step, smears surface by cooled taphole clay basting agent, reinstalls packing bag, be finished product after drying.
Embodiment 3: a kind of for 3800m3 ironmaking taphole clay, is characterized in that described ironmaking taphole clay is made up of the component of following weight part: 3-0mm chromohercynite: 20 parts; 1-0mm Bo Naite: 6 parts; 1-0mm sillimanite: 14 parts; 0.5-0mm magnesium oxide iron: 13 parts; Inclined clay powder: 10 parts; Cobalt oxide aluminium powder 5 parts, cutting powder: 5 parts; Crystalline graphite powder: 20 parts, compound powdered carbon 6 parts, mid-temperature pitch powder: 1 part.The preparation method of taphole clay: all raw materials are put into the first pre-mixing of mixing pan 15 minutes; Prepare 15 parts, modification tar, first add 85% of modification tar total amount, wet stone roller 35 minutes; Add 15% remaining modification tar, rewetting grinds 15 minutes; Through taphole clay microtome, then through mud extruder, squeeze mud shaping, be as cold as room temperature after cutting section, the crowded mud temperature in this step is set as 55 DEG C; Second step joins basting agent, by zirconic acid calcium powder, and crystalline graphite powder, potassium silicate solution is made into Homogeneous phase mixing liquid by weight 38:32:30 stirring and is basting agent, stand-by; 3rd step, smears surface by cooled taphole clay basting agent, reinstalls packing bag, be finished product after drying.
Embodiment 4: a kind of for 5800m3 ironmaking taphole clay, is characterized in that described ironmaking taphole clay is made up of the component of following weight part: 3-0mm chromohercynite: 15 parts; 1-0mm Bo Naite: 8 parts; 1-0mm sillimanite: 11 parts; 0.5-0mm magnesium oxide iron: 11 parts; Inclined clay powder 10 parts; Cobalt oxide aluminium powder 7 parts, cutting powder: 10 parts; Crystalline graphite powder: 20 parts, compound powdered carbon 6 parts, mid-temperature pitch powder: 2 parts.The preparation method of taphole clay: all raw materials are put into mixing pan, first pre-mixing 15 minutes; Prepare 16 parts, modification tar, first add 85% of modification tar total amount, wet stone roller 35 minutes; Add 15% remaining modification tar, rewetting grinds 15 minutes; Through taphole clay microtome, then through mud extruder, squeeze mud shaping, be as cold as room temperature after cutting section, the crowded mud temperature in this step is set as 55 DEG C; Second step joins basting agent, by zirconic acid calcium powder, and crystalline graphite powder, potassium silicate solution is made into Homogeneous phase mixing liquid by weight 38:32:30 stirring and is basting agent, stand-by; 3rd step, smears surface by cooled taphole clay basting agent, reinstalls packing bag, be finished product after drying.
Comparative example: the used taphole clay of blast furnace will be tested, carry out performance comparison with taphole clay of the present invention; The use properties detected result of above-described embodiment 1 ~ 4 and comparative example the results are shown in following table (experimental period is 3 months).
Product of the present invention uses through curstomer's site workman, unanimously thinks: easily beat mud, iron mouth appropriate depth, and the time of mean pressure big gun is short, and rapidly, anti-slag iron aggressiveness is good for sintering, and iron notch aperture is stablized, and taps a blast furnace stable, without spraying rocket phenomenon.
This specific embodiment is only explanation of the invention; it is not the restriction to invention; those skilled in the art can make any amendment to the present embodiment after reading this specification as required, as long as but be all subject to the protection of patent law in right of the present invention.
Claims (5)
1. an ironmaking taphole clay, is characterized in that described ironmaking taphole clay is made up of the component of following weight part: 3-0mm chromohercynite: 15 ~ 20 parts; 1-0mm Bo Naite: 5 ~ 8 parts; 1-0mm sillimanite: 10 ~ 15 parts; 0.5-0mm magnesium oxide iron: 8 ~ 15 parts; Inclined clay powder: 8 ~ 13 parts; Cobalt oxide aluminium powder 3-7 part, cutting powder: 5 ~ 10 parts; Crystalline graphite powder: 7 ~ 25 parts, compound powdered carbon 5-10 part, 0 ~ 1 part, Strontium carbonate powder powder, mid-temperature pitch powder: 1 ~ 2 part; Additional modification tar: 13 ~ 16 parts; Described modification tar is that 100 parts of modification tar include 98 parts, tar, ethylene glycol 1 part, N-methyl pyrrole network alkane ketone 1 part, is in harmonious proportion forms through three kinds of materials.
2. a kind of ironmaking taphole clay according to claim 1, it is characterized in that: described compound powdered carbon is hard charcoal, sugar charcoal, pitch coke three kinds of substance weights are than the mixture of 1:2:7.
3. a kind of ironmaking taphole clay according to claim 1, it is characterized in that: described inclined clay powder reaches the substance A of more than 60% for first clay obtains weight ratio shared by the composition of metakaolin after Overheating Treatment, substance A mixes by weight 8.5:1.2:0.3 with white garnet, dextrin, is inclined clay powder.
4. a kind of ironmaking taphole clay according to claim 1, is characterized in that: described cutting powder is the cutting powder cutting silicon single crystal generation in monocrystalline silicon production process, and described main component is SiC50-70%, elemental silicon 30-50%.
5. a kind of preparation method using taphole clay that smelts iron as claimed in claim 1, is characterized in that adopting following processing method to obtain: the first step produces stemming, by 3-0mm chromohercynite: 15 ~ 20 parts; 1-0mm Bo Naite: 5 ~ 8 parts; 1-0mm sillimanite: 10 ~ 15 parts; 0.5-0mm magnesium oxide iron: 8 ~ 15 parts; Inclined clay powder: 8 ~ 13 parts; Cobalt oxide aluminium powder 3-7 part, cutting powder: 5 ~ 10 parts; Crystalline graphite powder: 7 ~ 25 parts, compound powdered carbon 5-10 part, 0 ~ 1 part, Strontium carbonate powder powder, mid-temperature pitch powder: 1 ~ 2 part, puts into wheeled mixing pan, first pre-mixing 15 minutes; Then 85% of modification tar total amount is added, wet stone roller 35 minutes; Add 15% remaining modification tar, rewetting grinds 15 minutes; Through stemming microtome, then through mud extruder, squeeze mud shaping, be as cold as room temperature after cutting section, the crowded mud temperature in this step is set as 55 DEG C; Second step joins basting agent, by zirconic acid calcium powder, and Graphite Powder 99, potassium silicate solution is made into Homogeneous phase mixing liquid by weight 38:32:30 stirring and is basting agent, prepares stand-by; 3rd step, smears surface by cooled stemming basting agent, reinstalls packing bag, be finished product after drying.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510735398.8A CN105237007A (en) | 2015-11-03 | 2015-11-03 | Iron-making tap-hole clay and preparation method therefor |
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| CN201510735398.8A CN105237007A (en) | 2015-11-03 | 2015-11-03 | Iron-making tap-hole clay and preparation method therefor |
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| CN105237007A true CN105237007A (en) | 2016-01-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106927843A (en) * | 2017-04-18 | 2017-07-07 | 王冰 | A kind of blast furnace ironmaking tap-hole clay and preparation method thereof |
| CN108794030A (en) * | 2018-08-06 | 2018-11-13 | 邵珠航 | A kind of smelting iron and steel tap-hole clay and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4383045A (en) * | 1982-04-27 | 1983-05-10 | Martin Marietta Corp. | Magnesia refractories bonded with sulfamic acid |
| US5869145A (en) * | 1996-10-15 | 1999-02-09 | Taiko Refractories Co., Ltd. | Wet-gunning method for dense castable refractory composition |
| CN101219900A (en) * | 2007-01-08 | 2008-07-16 | 宝山钢铁股份有限公司 | Bleed hole stemming and method for producing the same |
| CN102757241A (en) * | 2011-04-25 | 2012-10-31 | 宝山钢铁股份有限公司 | Stemming and purpose thereof |
| CN103979985A (en) * | 2014-05-15 | 2014-08-13 | 武汉钢铁(集团)公司 | Environment-friendly converter bedding-face repairing material and preparation method thereof |
-
2015
- 2015-11-03 CN CN201510735398.8A patent/CN105237007A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4383045A (en) * | 1982-04-27 | 1983-05-10 | Martin Marietta Corp. | Magnesia refractories bonded with sulfamic acid |
| US5869145A (en) * | 1996-10-15 | 1999-02-09 | Taiko Refractories Co., Ltd. | Wet-gunning method for dense castable refractory composition |
| CN101219900A (en) * | 2007-01-08 | 2008-07-16 | 宝山钢铁股份有限公司 | Bleed hole stemming and method for producing the same |
| CN102757241A (en) * | 2011-04-25 | 2012-10-31 | 宝山钢铁股份有限公司 | Stemming and purpose thereof |
| CN103979985A (en) * | 2014-05-15 | 2014-08-13 | 武汉钢铁(集团)公司 | Environment-friendly converter bedding-face repairing material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106927843A (en) * | 2017-04-18 | 2017-07-07 | 王冰 | A kind of blast furnace ironmaking tap-hole clay and preparation method thereof |
| CN108794030A (en) * | 2018-08-06 | 2018-11-13 | 邵珠航 | A kind of smelting iron and steel tap-hole clay and preparation method thereof |
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