CN102286651A - Manufacture method of durable tuyere reducing small sleeve for controlling smelting intensity of blast furnace - Google Patents
Manufacture method of durable tuyere reducing small sleeve for controlling smelting intensity of blast furnace Download PDFInfo
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- CN102286651A CN102286651A CN2011102479303A CN201110247930A CN102286651A CN 102286651 A CN102286651 A CN 102286651A CN 2011102479303 A CN2011102479303 A CN 2011102479303A CN 201110247930 A CN201110247930 A CN 201110247930A CN 102286651 A CN102286651 A CN 102286651A
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- China
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- tuyere
- small sleeve
- blast furnace
- durable
- reducing small
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention relates to a manufacture method of a durable tuyere reducing small sleeve for controlling smelting intensity of a blast furnace, belonging to the technical field of blast furnace smelting. The manufacture method comprises the following steps: vertically placing an original tuyere reducing small sleeve spare part of the blast furnace, setting the inside diameter of the tuyere reducing small sleeve, placing an Al2O3-SiC natural casting material in tuyere reducing small sleeve spare part, after casting is finished, naturally airing for 5-7 hours, and then baking for 1-2 hours for use. The manufacture process has the advantages that: the tuyere has simple manufacture process, is durable, and has average service life more than 100 days; the tuyere reducing small sleeve is simple to mount and demount; the area of tuyere is easily adjusted, thereby guaranteeing the blast uniformity and stability of the blast furnace; the fluctuation of the blast furnace yield is effectively avoided; and the intermediate storage of enterprises is reduced, the fund occupation is reduced, and the management level of the enterprises is improved.
Description
Technical field
The invention belongs to technical field of blast furnace process, particularly relate to a kind of durable tuyere small sleeve making method that contracts of controlling smelting strength of blast furnace.
Background technology
The air port lining that contracts is that blast furnace dwindles the air port area, reduces one of effective way of combustion intensity, but because blast-furnace tuyere per minute wind speed reaches 260m/s, the air port lining is very easy to be blown in the stove, more practical not as good as changing the small area air port on the contrary, reduce combustion intensity but change the air port, the air port makes the fabrication cycle that needs the long period on the one hand, after finish in the air port on the other hand, the air port area just can not adjust again, lacks handiness, also takies substantial contribution.
Summary of the invention
The object of the present invention is to provide a kind of durable tuyere small sleeve making method that contracts of controlling smelting strength of blast furnace, realized not changing the air port, dwindled the air port area.
The present invention adopts special refractory, uses certain manufacture craft to make the air port lining, and is durable in use, played the effect of dwindling air port area control combustion intensity.
Present method finally adopts Al through test of many times
2O
3-SiC gravity flow pouring material is as refractory materials, and its result of use is good.
Its manufacture craft is to utilize original blast furnace tuyere small sleeve spare part, it is erect place the tuyere small sleeve internal diameter
Adopt Al
2O
3The spare part cast that-SiC gravity flow pouring material is put into tuyere small sleeve forms, and behind the casting complete natural air drying 5-7 hour, toasts then and can use in 1-2 hour.
Installation process is utilized the blast furnace staying chance, and the durable tuyere small sleeve that contracts is embedded and compresses with hold-down gear.Can normally use.Dismounting can not blowing-out be opened the air port tegillum when the blast furnace ordinary production, directly tuyere small sleeve is disclosed into blast furnace to get final product, and discarded little cover effluxes as slag and do not influence blast furnace operating.
Beneficial effect:
1 durable air port manufacture craft that contracts is simple, durable in use, and mean life was above 100 days;
2 contract tuyere small sleeve installation and removal are simple and easy;
3 air port area adjustment are flexible, can adjust as required, kept all even stable of blast furnace air-supply;
4 keep blast furnaces along steady the time, have successfully managed the furnace processor fluctuation;
5 have reduced enterprise's interim stock, have reduced the occupation of capital, have improved enterprise management level;
Embodiment
The contract concrete making method of tuyere small sleeve of this wearing quality is at first original tuyere small sleeve spare part that contracts to be erect to place, and measures the internal diameter size of little cover, will adopt Al then
2O
3-SiC gravity flow pouring material pours into tuyere small sleeve, and natural air drying is 6 hours behind the casting complete, spontaneous combustion air-dry back baking 1.5 hours, and the durable like this tuyere small sleeve that contracts is just finished making processes.The old tuyere small sleeve that contracts in the blast-furnace tuyere disclosed into blast furnace discharge, the tuyere small sleeve of newly making that contracts is installed and compressed, can normally use as furnace charge.
Claims (1)
1. the durable tuyere small sleeve making method that contracts of controlling smelting strength of blast furnace is characterized in that, manufacture craft is, utilizes original blast furnace tuyere small sleeve spare part, it is erect place, and configures the internal diameter size of tuyere small sleeve
120-130mm adopts Al
2O
3The spare part cast that-SiC gravity flow pouring material is put into tuyere small sleeve forms, and behind the casting complete natural air drying 5-7 hour, toasts then 1-2 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102479303A CN102286651A (en) | 2011-08-26 | 2011-08-26 | Manufacture method of durable tuyere reducing small sleeve for controlling smelting intensity of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102479303A CN102286651A (en) | 2011-08-26 | 2011-08-26 | Manufacture method of durable tuyere reducing small sleeve for controlling smelting intensity of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102286651A true CN102286651A (en) | 2011-12-21 |
Family
ID=45333406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102479303A Pending CN102286651A (en) | 2011-08-26 | 2011-08-26 | Manufacture method of durable tuyere reducing small sleeve for controlling smelting intensity of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102286651A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102994676A (en) * | 2012-12-20 | 2013-03-27 | 武钢集团昆明钢铁股份有限公司 | Small wear-resistant bush for blast-furnace tuyere and manufacture method thereof |
| CN114381562A (en) * | 2021-12-29 | 2022-04-22 | 石横特钢集团有限公司 | Method for rapidly adjusting smelting intensity of blast furnace |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2797375Y (en) * | 2005-04-21 | 2006-07-19 | 宝钢集团上海梅山有限公司 | Reducing sleeve for tuyere of blast furnace |
-
2011
- 2011-08-26 CN CN2011102479303A patent/CN102286651A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2797375Y (en) * | 2005-04-21 | 2006-07-19 | 宝钢集团上海梅山有限公司 | Reducing sleeve for tuyere of blast furnace |
Non-Patent Citations (1)
| Title |
|---|
| 丁汝才等: "首秦高炉风口加套控制冶炼强度的生产实践", 《2010年全国炼铁新技术应用及节能减排研讨会》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102994676A (en) * | 2012-12-20 | 2013-03-27 | 武钢集团昆明钢铁股份有限公司 | Small wear-resistant bush for blast-furnace tuyere and manufacture method thereof |
| CN114381562A (en) * | 2021-12-29 | 2022-04-22 | 石横特钢集团有限公司 | Method for rapidly adjusting smelting intensity of blast furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111221 |