CN1456687A - High conductive copper-steel composite cast cooling wall of blast furnace - Google Patents
High conductive copper-steel composite cast cooling wall of blast furnace Download PDFInfo
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- CN1456687A CN1456687A CN 03120996 CN03120996A CN1456687A CN 1456687 A CN1456687 A CN 1456687A CN 03120996 CN03120996 CN 03120996 CN 03120996 A CN03120996 A CN 03120996A CN 1456687 A CN1456687 A CN 1456687A
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- cooling stave
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Abstract
A cooling wall of blast furnace is made up of pure copper and microalloyed steel through combined casting. It has high thermal conductivity, rigidity, high-temp strength and thermal flushing and heat shock resistance. The surface of water tube inlaid in it is plated by Zn or Sn. The inlaid copper part is welded to the cooling water tubes.
Description
Technical field
The present invention relates to a kind of high heat-conducting copper steel composite casting blast furnace cooling stave, form by cooling stave body (1), the copper spare (2) that is bumped into, water-cooled tube (3) and other web member.Be the important cooling apparatus of blast furnace, this invention belongs to the ironmaking technology field.
Technical background
In blast furnace ironmaking process, at bosh, furnace bosh and restoration of lower stack, because bricking damages, cause the cooling stave surface to be directly exposed in the stove, be subjected to that violent thermal load effect and impact, slag iron corrode, intensive coal gas stream washes away with the mechanical wear of furnace charge etc., so this regional cooling stave is the most serious position of cooling wall breakage always.Have a strong impact on the work-ing life of blast furnace.
The material of traditional cooling stave is respectively graphitic cast iron, cast alloy iron, spheroidal graphite cast iron, copper and cast steel.The material of cast-iron cooling wall is graphitic cast iron, cast alloy iron, spheroidal graphite cast iron etc., because when under long term high temperature, using, because thermal fatigue produces be full of cracks, the carburizing of water-cooled tube, the reasons such as grain growth of the pig iron, work-ing life is lower; The material of cast steel cooling wall is an ordinary low-carbon steel, there are monoblock casting type, cast welding mating type, weldless steel tube to inlay patterns such as casting, its life-span increases than cast-iron cooling wall, but its cooling power is also not enough to some extent, and the corresponding cast steel cooling wall life-span improves also just limited; The material of copper cooling wall is a copper, and copper has the highest thermal conductivity, is about steel and cast iron 10 times, so copper cooling wall has good cooling power and long work-ing life, but costs an arm and a leg, and is difficult to extensive popularization.
Summary of the invention
The purpose of this invention is to provide and a kind ofly be better than copper, cast iron and Normal Steel Casting at aspects such as high low temperature intensity, toughness, wear resistancies, be better than cast iron and cast steel in thermal conductivity, long service life, the novel blast-furnace cooling stave of low cost of manufacture-high heat-conducting copper steel composite casting blast furnace cooling stave.
The object of the present invention is achieved like this
First, the present invention exceeds the nearly 10 times copper of iron and steel with thermal conductivity and inlays casting and go in the cooling stave body, cooling stave high-temperature surface and water-cooled tube directly are connected as a single entity, the heat energy that heating surface is received is transmitted in the water coolant by copper spare soon and is pulled away, and also can be transmitted on the copper spare with heat energy on the steel body of copper spare contacts side surfaces, and then be transmitted on the water pipe and taken away, thereby improved the cooling power of cooling stave widely by water.
The second, cooling stave body material of the present invention is a microalloyed steel, owing to add micro alloying elements such as V, Ti, Nb, the over-all properties of this cast steel is improved.After elements such as V, Ti, Nb added soft steel, (C, N) type compound were improved high temperature and low temperature intensity, and toughness improves can to form MC with C, N.Anti-oxidant, thermal fatigue property, wear resistance also is improved.Simultaneously, the thermal conductivity of steel reduces with the raising of carbon content, and the result of microalloying reduces the carbon content in the steel matrix, and thermal conductivity is improved, and makes the mechanics of cooling stave and physical and chemical performance all be better than the common low carbon steel cooling wall.
The 3rd, the water-cooled tube of being gone into cooling stave by inlay casting is spraying zinc, aluminium or hot tinning to outside surface before this, makes the water pipe outside surface form metallurgical binding in casting and between the cooling stave body, to eliminate bonding gap, be beneficial to the elimination thermal resistance, improve the cooling power of cooling stave.
The 4th, the copper spare that institute's castingin is gone into coats with steel plate or steel pipe, and handle through spraying zinc, aluminium or hot tinning on the surface of steel plate or steel pipe, they with copper spare and cooling stave body between all form metallurgical binding, and when casting, copper spare is not melted away by molten steel.
The 5th, the copper spare that institute's castingin is gone into is cast back elder generation after spraying zinc, aluminium or hot tinning are handled at the cooling stave body, inlays copper casting again, guarantees all to form metallurgical binding between copper spare and cooling stave body.
The present invention has following characteristics
1. the cooling stave bulk material is the high-strength cast steel novel material of independent development; wherein critical area adopts the copper medium; can lean on that cast steel opposing slag iron corrodes, intensive coal gas stream washes away and the mechanical wear of furnace charge; can lean on copper to implement efficient cooling again; set up no overheated cooling system; stablize slag crust in the formation of cooling stave surface, protect cooling stave with slag crust.This technology has realized that the high refrigerative of high strength organically combines, and satisfies the long-lived requirement of blast furnace.
2. flexible design, the structure formation of cooling stave can be diversified, the biexhaust pipe that large and medium-sized blast furnace adopts be can be designed to be suitable for and material type or edge brick type cooling stave smash, also cocoa is designed to be suitable for the common material type or the edge brick type cooling stave smash of small blast furnace, to satisfy the different technologies requirement of large, medium and small type blast furnace.
3. high heat-conducting copper steel composite casting blast furnace cooling stave is taken into account economic requirement simultaneously, invest lowly, finally realizes efficient, economic, reasonable longevity.Big and the marketable value height of these technical market potentiality, economic benefit is considerable.
Description of drawings
Fig. 1 I type cooling stave front view
Fig. 2 I type cooling stave left view
Fig. 3 I type cooling stave sectional view
Fig. 4 II type cooling stave front view
Fig. 5 II type cooling stave left view
Fig. 6 II type cooling stave sectional view
Fig. 7 III type cooling stave front view
Fig. 8 III type cooling stave left view
Fig. 9 III type cooling stave sectional view
Figure 10 IV type cooling stave front view
Figure 11 IV type cooling stave left view
Figure 12 IV type cooling stave sectional view
Above-mentioned figure is high heat-conducting copper steel composite casting blast furnace cooling stave structural representation,
More than among each figure (1) be the cooling stave body, its material is that little composition that closes full soft steel is: wt%
Fe 99.22～98.57％ C 0.15～0.25％
Si 0.20～0.40％ Mn 0.30～0.60％
P ≤0.04％ S ≤0.04％
V/Ti/Nb (adding alone or in combination) 0.05～0.10%
(2) be copper spare.(3) be water-cooled tube.(4) be castingin refractory brick or refractory remming compound.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, inlay copper spare (2) distribution that is cast into and be the arrangement of row, column formula, and be one with water pipe (3) weldering, form the thermal conduction system of a high heat conduction, (4) are castingin refractory brick or refractory remming compound, its principle is as previously mentioned.And other conventional structure body is according to the blast furnace design specific design.The little composition that closes full soft steel of its cooling stave body (1) is: wt%
Fe： 99.22～98.57％ C： 0.15～0.25％
Si： 0.20～0.40％ Mn： 0.30～0.60％
P： ≤0.04 S： ≤0.04
V/Ti/Nb： 0.05～0.10
As Fig. 4, Fig. 5, shown in Figure 6, little composition such as the embodiment 1 that closes full steel of cooling stave body (1).Inlay the copper spare (2) that is cast into, pattern structure increases the width copper spare (2) parallel with water-cooled tube on the basis of embodiment 1, and cold junction and water pipe (3) are connected as a single entity, and the hot junction communicates with the dovetail-indent bottom land, and (4) are castingin refractory brick or refractory remming compound.Further improve the cooling power of cooling stave.
As Fig. 7, Fig. 8, shown in Figure 9, the cooling stave huyashi-chuuka (cold chinese-style noodles) is cooling stave body (1), the composition of its material microalloyed steel such as embodiment 1.The rib arm of cooling stave dovetail-indent is entirely for inlaying the copper spare (2) that is cast into.(3) be water-cooled tube, (4) are castingin refractory brick or refractory remming compound.
As Figure 10, Figure 11, shown in Figure 12, the cooling stave huyashi-chuuka (cold chinese-style noodles) is cooling stave body (1), the composition of its material microalloyed steel such as embodiment 1.The hot side of cooling stave is entirely for inlaying the copper spare (2) that is cast into.(3) be water-cooled tube, (4) are castingin refractory brick or refractory remming compound.
Claims (6)
1, a kind of high heat-conducting copper steel composite casting blast furnace cooling stave is made up of cooling stave body (1), the copper spare (2) that is bumped into, water-cooled tube (3) and other web member.It is characterized in that cooling stave body and the copper spare that is bumped into and water-cooled tube are fabricated to one with the composite casting technology method.
2, cooling stave according to claim 1 is characterized in that the copper spare (2) that is bumped into is the fine copper making.
3, cooling stave according to claim 1 is characterized in that cooling stave body (1) is to be cast by the soft steel of micro-alloyings such as V, Ti, Nb to form.
4, cooling stave according to claim 1 is characterized in that it being that the outside surface of water-cooled tube (3) is to handle through spraying zinc, aluminium or hot tinning, in castingprocesses, make its with cooling stave body (1) between formation metallurgical binding and do not have the gap.
5, cooling stave according to claim 1, it is characterized in that the copper spare (2) that is bumped into coats with steel plate or steel pipe, handle through spraying zinc, aluminium or hot tinning on the surface of steel plate or steel pipe, all forms metallurgical binding between they and copper spare (2) and cooling stave body (1).
6, cooling stave according to claim 1 is characterized in that cooling stave body (1) earlier after spraying zinc, aluminium or hot tinning are handled, inlays copper casting (2) again, guarantees all to form metallurgical binding between copper spare (2) and cooling stave body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031209963A CN1194104C (en) | 2003-01-09 | 2003-03-27 | High conductive copper-steel composite cast cooling wall of blast furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03100091 | 2003-01-09 | ||
| CN03100091.6 | 2003-01-09 | ||
| CNB031209963A CN1194104C (en) | 2003-01-09 | 2003-03-27 | High conductive copper-steel composite cast cooling wall of blast furnace |
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| Publication Number | Publication Date |
|---|---|
| CN1456687A true CN1456687A (en) | 2003-11-19 |
| CN1194104C CN1194104C (en) | 2005-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031209963A Expired - Fee Related CN1194104C (en) | 2003-01-09 | 2003-03-27 | High conductive copper-steel composite cast cooling wall of blast furnace |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102077047A (en) * | 2008-06-30 | 2011-05-25 | 奥图泰有限公司 | Method for manufacturing cooling element and cooling element |
| CN102744374A (en) * | 2012-07-25 | 2012-10-24 | 南车戚墅堰机车有限公司 | Manufacturing method for casting branch oilway in body of diesel engine |
| CN103540700A (en) * | 2012-08-31 | 2014-01-29 | 洛阳新火种节能技术推广有限公司 | Copper-aluminum compound type blast-furnace cooling wall |
| CN105177203A (en) * | 2015-08-03 | 2015-12-23 | 中冶京诚工程技术有限公司 | Cooling wall of blast furnace and manufacturing method of cooling wall |
| CN106213362A (en) * | 2016-07-25 | 2016-12-14 | 柳州中品科技有限公司 | A kind of low sugar health preserving type seed watermelon compound nectar and preparation method thereof |
| CN107236838A (en) * | 2017-08-01 | 2017-10-10 | 中冶京诚工程技术有限公司 | A kind of cooling equipment for blast furnace |
| CN108315517A (en) * | 2018-03-30 | 2018-07-24 | 湖州虹君机械有限公司 | Copper quickly cooling device |
| CN110073007A (en) * | 2016-12-30 | 2019-07-30 | 安赛乐米塔尔公司 | The copper cooling plate with wear resistant insert for blast furnace |
| CN113308589A (en) * | 2021-06-19 | 2021-08-27 | 山东天铭重工科技股份有限公司 | Copper column reinforced cooling cast iron cooling wall |
-
2003
- 2003-03-27 CN CNB031209963A patent/CN1194104C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102077047A (en) * | 2008-06-30 | 2011-05-25 | 奥图泰有限公司 | Method for manufacturing cooling element and cooling element |
| CN102744374A (en) * | 2012-07-25 | 2012-10-24 | 南车戚墅堰机车有限公司 | Manufacturing method for casting branch oilway in body of diesel engine |
| CN103540700A (en) * | 2012-08-31 | 2014-01-29 | 洛阳新火种节能技术推广有限公司 | Copper-aluminum compound type blast-furnace cooling wall |
| CN105177203A (en) * | 2015-08-03 | 2015-12-23 | 中冶京诚工程技术有限公司 | Cooling wall of blast furnace and manufacturing method of cooling wall |
| CN105177203B (en) * | 2015-08-03 | 2017-12-26 | 中冶京诚工程技术有限公司 | The cooling wall and its manufacture method of a kind of blast furnace |
| CN106213362A (en) * | 2016-07-25 | 2016-12-14 | 柳州中品科技有限公司 | A kind of low sugar health preserving type seed watermelon compound nectar and preparation method thereof |
| CN110073007A (en) * | 2016-12-30 | 2019-07-30 | 安赛乐米塔尔公司 | The copper cooling plate with wear resistant insert for blast furnace |
| US11150020B2 (en) | 2016-12-30 | 2021-10-19 | Arcelormittal | Copper cooling plate with wear resistant inserts, for a blast furnace |
| CN107236838A (en) * | 2017-08-01 | 2017-10-10 | 中冶京诚工程技术有限公司 | A kind of cooling equipment for blast furnace |
| CN108315517A (en) * | 2018-03-30 | 2018-07-24 | 湖州虹君机械有限公司 | Copper quickly cooling device |
| CN113308589A (en) * | 2021-06-19 | 2021-08-27 | 山东天铭重工科技股份有限公司 | Copper column reinforced cooling cast iron cooling wall |
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| Publication number | Publication date |
|---|---|
| CN1194104C (en) | 2005-03-23 |
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