CN103276144B - Molten iron heat-preservation and cold-setting pellet containing plant fibers - Google Patents
Molten iron heat-preservation and cold-setting pellet containing plant fibers Download PDFInfo
- Publication number
- CN103276144B CN103276144B CN201310191602.5A CN201310191602A CN103276144B CN 103276144 B CN103276144 B CN 103276144B CN 201310191602 A CN201310191602 A CN 201310191602A CN 103276144 B CN103276144 B CN 103276144B
- Authority
- CN
- China
- Prior art keywords
- parts
- molten iron
- preservation
- cold
- hot
- Prior art date
- 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.)
- Expired - Fee Related
Links
Landscapes
- Ceramic Products (AREA)
Abstract
The invention discloses a molten iron heat-preservation and cold-setting pellet containing plant fibers. The molten iron heat-preservation and cold-setting pellet comprises the following raw materials in parts by weight: 55-70 parts of waste clay bricks of which the particle size is less than or equal to 0.074 mm or high-aluminum brick powder or a mixture consisting of the waste clay bricks and the high-aluminum brick powder according to any proportion, 0-20 parts of rice husk, 3-15 parts of plant fibers, 5-15 parts of clay, 3-10 parts of alumina cement or common portland cement or a mixture consisting of the alumina cement and the common portland cement, and 3-5 parts of external additive. The raw materials are readily available and low in cost; the problems of high dust content, pollution to the environment and large using amount of a conventional heat preservation agent are solved; and the molten iron heat-preservation and cold-setting pellet has the characteristics of high foaming property and good heat preservation effect and is suitable for molten iron heat preservation of molten iron ladles or torpedo ladles.
Description
Technical field
The present invention relates to the lagging material that a kind of metallurgy industry is used, belong to particularly a kind of hot-metal insulating cooled agglomerated pellet.
Background technology
After blast furnace maximizes, hot metal ladle, the fish torpedo ladle volume of carrying molten iron also increase, and exist temperature to reduce in Molten Iron Transportation process, and calorific loss has increased steel products cost, to energy-saving and cost-reducing unfavorable.The effect of hot-metal insulating insulating covering agent is exactly to utilize its porous tectum forming on molten iron surface, plays thermal insulation function.Current domestic hot-metal insulating insulating covering agent is of a great variety, as perlite, carbonization rice husk, vermiculite etc.There is defect in the main raw material(s) that traditional thermal-insulating covering agent adopts, bulk cargo dust is large, pollutes heavy in insulation, the performance such as heat insulation.Prior art is to adopt after the simple mixing of the raw materials such as coal gangue, perlite, vermiculite, with after bag weaved packing, according to the size of hot metal ladle or fish torpedo ladle, at every turn after molten iron is filled, directly lose molten iron surface in hot metal ladle or fish torpedo ladle, rely on the vesicular structure insulation after the raw material foaming such as coal gangue carbonization or perlite, vermiculite, exist consumption large, contaminate environment, the problem that cost is high; In raw material, bring the high meeting of impurity S content into and affect molten steel quality.External best heat preserving agent is carbonization rice husk and compound artificial thermal-insulation particle, but domestic due to factors such as prices, has limited the development of hot-metal insulating technology always.
Through retrieval, the document that Chinese Patent Application No. is 200910062435, it discloses a kind of lagging material for desulfurized molten iron, and its composition comprises carbon dust: 55～62, light dolomite: 24～26, pearl sand: 12～21; Mixed lagging material is directly spread to put on iron ladle tank mouth molten iron surface around and be incubated.This heat preserving agent pollutes large, carburetting, and expense is large.Chinese Patent Application No. is 200510049642 document, and it discloses a kind of hot-metal insulating slag-collecting agent, and it is comprised of perlite, pearlstone, float pearl forms, and has that collection slag is effective but raw material sources are limited, and cost is high.Chinese Patent Application No. is 200910144940 document, it discloses a kind of granular heat-preserving covering flux for hot metal in steelmaking, by expanded vermiculite, wollastonite, bauxitic clay, iron ore concentrate, coke end, formed, same because wollastonite, bauxitic clay, iron ore concentrate, coke end price are high, and the bad use of heat-insulating property is restricted.
Summary of the invention
The object of the invention is to overcome that prior art exists that environment is had to pollution, and the deficiency of carburetting, increasing sulphur, provide a kind of not only thermal and insulating performance good, and do not pollute the environment, poly-slag is functional, with low cost, realize comprehensive utilization, and raw material sources hot-metal insulating cooled agglomerated pellet widely.
Realize the measure of above-mentioned purpose:
A kind of hot-metal insulating cooled agglomerated pellet that contains vegetable fibre, its raw material and weight part are: the mixture of the discarded clay brick of granularity≤0.074mm or high alumina brick powder or both arbitrary proportions: 55～70 parts, rice husk: 0～20 part, vegetable fibre: 3～15 parts, clay: 5～15 parts, luminite cement or ordinary Portland cement or its both mixing: 3～10 parts, and external adding water: 3～5 parts.
It is characterized in that: vegetable fibre be maize straw or reed rod or straw or straw fragmentation fiber or or trees or the two or more mixture of shrub; Control its length and be no more than 10mm, diameter is no more than 3mm.
The function and mechanism of each raw material in the present invention:
Discarded clay brick or high alumina brick powder: as resistant to elevated temperatures raw material, bear the coating function of insulation pore-creating, after foaming, can bear the impact of high temperature and not soft heat.
Rice husk: play the effect of heat-insulation and heat-preservation.
Vegetable fibre: play the effect of pore-creating insulation.
Clay: increase compound plasticity and be beneficial to pressure ball.
Luminite cement or ordinary Portland cement: play the effect of cold solid bonding agent.
The present invention compared with prior art, raw material sources more extensively, more cheap, it overcomes that traditional heat preserving agent dust is large, contaminate environment, problem that consumption is many, and has the feature of foam performance and high insulating effect, and suitable hot metal ladle or the insulation of fish torpedo ladle molten iron are used.
Embodiment
Below the present invention is described in detail:
Embodiment 1
A kind of hot-metal insulating pelletizing that contains vegetable fibre, its raw material and weight part are: the discarded clay brick of granularity≤0.074mm: 55 parts, rice husk: 12 parts, length is no more than the maize straw that 10mm and diameter are no more than 3mm: 15 parts, clay: 8 parts, luminite cement: 10 parts, external adding water: 3 parts.
After mixing, add and press to ellipse or circular cooled agglomerated pellet, dry rear standby.After testing, the intensity that crushes of a plurality of cooled agglomerated pellets is 2190N.
Embodiment 2
A kind of hot-metal insulating pelletizing that contains vegetable fibre, its raw material and weight part are: the discarded high alumina brick powder of granularity≤0.074mm: 62 parts, rice husk: 8 parts, length is no more than the reed rod that 10mm and diameter are no more than 3mm: 14 parts, clay: 13 parts, ordinary Portland cement: 3 parts, and external adding water: 4 parts.
After mixing, add and press to ellipse or circular cooled agglomerated pellet, dry rear standby.After testing, the intensity that crushes of a plurality of cooled agglomerated pellets is 1892N.
Embodiment 3
A kind of hot-metal insulating pelletizing that contains vegetable fibre, its raw material and weight part are: the mixture of the discarded clay brick of granularity≤0.074mm and high alumina brick powder arbitrary proportion: 70 parts, rice husk: 0 part, length is no more than the fiber that 10mm and diameter are no more than the straw fragmentation of 3mm: 15 parts, clay: 5 parts, ordinary Portland cement: 10 parts, and external adding water: 4 parts.
After mixing, add and press to ellipse or circular cooled agglomerated pellet, dry rear standby.After testing, the intensity that crushes of a plurality of cooled agglomerated pellets is 2210N.
Embodiment 4
A kind of hot-metal insulating pelletizing that contains vegetable fibre, its raw material and weight part are: the mixture of the discarded clay brick of granularity≤0.074mm and high alumina brick powder arbitrary proportion: 59 parts, rice husk: 20 parts, length is no more than the fiber that 10mm and diameter are no more than the straw fragmentation of 3mm: 3 parts, clay: 15 parts, luminite cement mix with ordinary Portland cement: 3 parts, and external adding water: 4 parts.
After mixing, add and press to ellipse or circular cooled agglomerated pellet, dry rear standby.After testing, the intensity that crushes of a plurality of cooled agglomerated pellets is 1275N.
Embodiment 5
A kind of hot-metal insulating pelletizing that contains vegetable fibre, its raw material and weight part are: the discarded clay brick of granularity≤0.074mm: 60 parts, rice husk: 18 parts, length is no more than 10mm and diameter is no more than the maize straw of 3mm and the fiber of straw fragmentation: 6 parts, clay: 9 parts, the mixing of ordinary Portland cement: 7 parts, and external adding water: 5 parts.
After mixing, add and press to ellipse or circular cooled agglomerated pellet, dry rear standby.After testing, the intensity that crushes of a plurality of cooled agglomerated pellets is 1539N.
Above-described embodiment only exemplifies for the best, and is not the restriction to embodiments of the present invention.
Claims (2)
1. a hot-metal insulating cooled agglomerated pellet that contains vegetable fibre, its raw material and weight part are: the mixture of the discarded clay brick of granularity≤0.074mm or high alumina brick powder or both arbitrary proportions: 55～70 parts, rice husk: 0～20 part, vegetable fibre: 3～15 parts, clay: 5～15 parts, luminite cement or ordinary Portland cement or its both mixing: 3～10 parts, and external adding water: 3～5 parts.
2. a kind of hot-metal insulating cooled agglomerated pellet that contains vegetable fibre as claimed in claim 1, is characterized in that: vegetable fibre is fiber or trees or the two or more mixture of shrub of maize straw or reed rod or straw or straw fragmentation; Control its length and be no more than 10mm, diameter is no more than 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310191602.5A CN103276144B (en) | 2013-05-22 | 2013-05-22 | Molten iron heat-preservation and cold-setting pellet containing plant fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310191602.5A CN103276144B (en) | 2013-05-22 | 2013-05-22 | Molten iron heat-preservation and cold-setting pellet containing plant fibers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103276144A CN103276144A (en) | 2013-09-04 |
| CN103276144B true CN103276144B (en) | 2014-10-08 |
Family
ID=49058759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310191602.5A Expired - Fee Related CN103276144B (en) | 2013-05-22 | 2013-05-22 | Molten iron heat-preservation and cold-setting pellet containing plant fibers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103276144B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326764B (en) * | 2014-10-09 | 2016-06-08 | 合肥向荣环保科技有限公司 | Environmental-friendly hollow brick |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124182A (en) * | 1993-12-23 | 1996-06-12 | 徐连世 | Development and production for multifunctional molten iron covering agent |
| CN101161832A (en) * | 2007-11-20 | 2008-04-16 | 湘潭市海森科技有限公司 | Binder adapted for production of cooled agglomerated pellet by using iron-bearing material |
-
2013
- 2013-05-22 CN CN201310191602.5A patent/CN103276144B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124182A (en) * | 1993-12-23 | 1996-06-12 | 徐连世 | Development and production for multifunctional molten iron covering agent |
| CN101161832A (en) * | 2007-11-20 | 2008-04-16 | 湘潭市海森科技有限公司 | Binder adapted for production of cooled agglomerated pellet by using iron-bearing material |
Non-Patent Citations (2)
| Title |
|---|
| 徐国涛等.铁水罐用铁水复合保温覆盖剂的研究与应用.《武钢技术》.2012,第50卷(第3期),全文. |
| 铁水罐用铁水复合保温覆盖剂的研究与应用;徐国涛等;《武钢技术》;20120630;第50卷(第3期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103276144A (en) | 2013-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101787413B (en) | Granular heat-preserving covering flux for hot metal in steelmaking | |
| CN103586426A (en) | Thermal-insulation cover agent and preparation method thereof | |
| CN101126114A (en) | Granular charring rice husk thermal insulation agent | |
| CN101654375A (en) | Low-carbon magnesia carbon brick | |
| CN102277487B (en) | Adhesive for carbon-containing pellets and using method thereof | |
| CN103537636B (en) | There is the steel of sulfur phosphorus eliminating function, molten iron slag gathering heat insulating covering agent | |
| CN101613798B (en) | Puddling additive and predation method thereof | |
| CN101306951A (en) | Non-sintered anti-hydrating konite carbon brick and preparation process | |
| CN102296145B (en) | New application of fungus residue and heat-insulating covering agent for metallurgical industry | |
| CN103173592B (en) | Ladle covering agent prepared through utilizing blast furnace slag | |
| CN101224489A (en) | Covering agent with high melting point and high alkalinity | |
| CN103045805B (en) | Low-cost melted iron heat preservation agent and manufacturing method thereof | |
| CN103276144B (en) | Molten iron heat-preservation and cold-setting pellet containing plant fibers | |
| CN103170592A (en) | Tundish covering agent prepared by using blast furnace slag | |
| CN106517974B (en) | A kind of casting residue divides the production method with grid material and grid automatically | |
| CN103276145B (en) | Cold pressing pellet for insulating molten iron | |
| CN107354267A (en) | A kind of heat preserving agent for liquid steel | |
| CN111057807A (en) | Smelting method of ultralow-silicon low-sulfur qualified pig iron | |
| CN103173591A (en) | Foundry ladle covering agent | |
| KR101123418B1 (en) | Silicon-carbon-iron based briquet for iron melt and the method of forming a solid thereof | |
| CN104017937B (en) | A kind of micro-carbon alkali grain insulating covering agent and production method thereof | |
| CN104193360B (en) | The repair method of RH tubular stinger soldering material and RH tubular stinger | |
| CN101812557A (en) | Activity magnesium-rich pellet for blast furnace | |
| CN110093478A (en) | A kind of production method of liquid steel refining slag making desulfurization refining slag | |
| CN103484602A (en) | Slagging agent for iron and steel metallurgy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170712 Address after: 430083 Qingshan District, Hubei, Wuhan factory before the door No. 2 Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuhan, Hubei Friendship Road, No. 999, Wuchang Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20180522 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |