CN1600879A - Water free beam of high furnace baking bed for sintering ball body of powder of iron ore - Google Patents
Water free beam of high furnace baking bed for sintering ball body of powder of iron ore Download PDFInfo
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- CN1600879A CN1600879A CN 200410086129 CN200410086129A CN1600879A CN 1600879 A CN1600879 A CN 1600879A CN 200410086129 CN200410086129 CN 200410086129 CN 200410086129 A CN200410086129 A CN 200410086129A CN 1600879 A CN1600879 A CN 1600879A
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- heat
- water free
- free beam
- resisting
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Abstract
This invention relates to a kind of beam of baking bed of sintering vertical furnace for sintering iron ore powder balls needing no water-cooling. The cross-section is an upper arch shaped and a lower rectangle shape. It is composed of layers of: (1). center base material made of reinforced and toughness-improved ceramic material, combined with (2). high temp. resisting alloy steel bar skeleton, then coated evenly with (3). heat-insulation fiber made of aluminium silicate, finally covered with (4). stainless and heat-resisting steel sheet, with its outside coated with (5). a layer of heat-barrier coating contg. Y2O2.ZrO2. The product has excellent heat-resisting property, mechanics property and chemical property, so it can be used for substituting stainless steel pipe beam of water cooling type. Advantages are: eliminating cooling water system, saving energy, increasing yield and quality.
Description
Technical field:
The present invention relates to a kind of powdered iron ore pelletizing sintering shaft furnace and burn the bed water free beam, belong to technical field of blast furnace process.
Background technology:
The powdered iron ore pelletizingization is one of efficient, long-lived, energy-conservation gordian technique of blast furnace ironmaking, must dry after the powdered iron ore pelletizingization, and sintering, shaft furnace are the advanced technologies in the sintering technology.Pellet enters on the baking bed at shaft furnace top and dries, and enters the sintering zone, bottom then and carries out sintering.The Shaft furnace drying bed bearing beam is supporting the loading of holding in the palm bar, grid section and pellet, and pellet is dried equably.The performance of beam, life-span are related to sintering cost, energy consumption and labour productivity, and beam requires to bear 500-600 ℃, and individual cases reach 900 ℃ high temperature, simultaneously water-fast vapour and the corrosion of other sour gas; Bear the uniform load of about 1t/m, the specification of quality of beam is very high.The present beam that uses does not all have the steel pipe of meeting by water flowing pressure refrigerative and forms.Force working temperature that cooling makes beam much smaller than 100 ℃, keeping the physical strength of beam (steel pipe), but caused about 1/3rd heat energy to be taken away, reduced thermo-efficiency, caused the consumption of thermal waste and water resources by water.
Summary of the invention:
Purpose of the present invention provides a kind of high furnace baking bed for sintering ball body of powder of iron ore water free beam; make it under obstructed water-cooled prerequisite; can satisfy the requirement of palletizing shaft furnace baking bed working conditions, the pressure water supply cooling system of cancellation Shaft furnace drying bed bulky complex reduces capital cost; realize the anhydrous operation of shaft furnace bed; improve baking bed thermo-efficiency, energy-saving and cost-reducing, decontamination; the protection environment reduces the sintering cost.
The object of the present invention is achieved like this: the high furnace baking bed for sintering ball body of powder of iron ore water free beam is a kind of novel intermediate sintering temperature pottery---a metallic substance composite beam, its base material (1) is a kind of enhancing toughening ceramic material, combine with the superalloy skeleton (2) of internal layout, constitute reinforcing bar pottery beam body, to solve load-bearing, pressure-bearing, heat-resisting, the anti-corrosion problem of beam, even coating alumina silicate fibrous insulant (3) around the body pillar, the temperature variation of beam main body impacts with thermodynamics when slowing down Shaft furnace drying bed technological temperature acute variation; Outside the pure aluminium silicate insulation material layer, coat stainless refractory steel protective guard (4) again, guarantee that the beam body is not hit, destroys in lifting and production process; Outside the stainless refractory steel protective guard, spray Y then
2O
3ZrO
2Coating (5) plays the thermal boundary effect, possesses heat-resisting, wear-resisting, preservative activity simultaneously.
High furnace baking bed for sintering ball body of powder of iron ore water free beam advantage is: because water free beam cools off without water flowing; when building, just can cancel new-type Shaft furnace drying bed the huge pressure waterworks of water cooled steel pipe beam; reduce capital cost; simultaneously; because of the high furnace baking bed for sintering ball body of powder of iron ore water free beam without water-cooled, heat energy utilization rate height can effectively reduce production costs; decontamination, the protection environment.
Description of drawings:
Fig. 1 is high furnace baking bed for sintering ball body of powder of iron ore water free beam structural section figure; the water free beam cross section is that top is half garden arch; the bottom is the compound shape that rectangle combines; its centre portions is by strengthening the ceramic beam body of reinforcing bar that base material (1) that the toughening ceramic material the forms high temperature alloy skeleton (2) with its internal layout is combined into; constitute the water free beam main body; coat one deck pure aluminium silicate refractory thermal insulating material layer (3) around it; the outside coats the protective guard (4) of one deck stainless refractory steel again; the protective guard outside surface is wear-resisting; heat-resisting; anti-corrosion spraying thermal boundary material coating (5) constitutes multilayer and coats the composite beam body.
Fig. 2, Fig. 3 are the outside views of high furnace baking bed for sintering ball body of powder of iron ore water free beam, wherein Fig. 2 is a front view, Fig. 3 is a side-view, L is the total length of beam among the figure, B is the total width of beam, H is the total height of beam, and R is top half a garden arcual arc radius, and its dimension scale is R: H: B: L=1: 3: 5: 80～1: 3: 5: between 120.
Specific embodiments:
The making processing of water free beam is carried out as follows:
1. the water free beam core strengthens toughness reinforcing ceramic base material (1) preparation of raw material: press mass ratio a. high alumina matter ceramic raw material 60～85%, b. aluminum phosphate wedding agent 18～8%, c. stainless heat-resistance steel fiber 12～2%, d. water 8～3%, e. intermediate sintering temperature agent 2%.Accurate measurement, thorough mixing is even, makes slurry.
2. make water free beam skeleton (2), with 5～8 in stainless refractory steel master muscle, iliacus becomes skeleton by 2～12/metric system.
3. make beam phantom type.
4. the water free beam skeleton is placed in the beam phantom type.
5. the enhancing toughening ceramic slurry that will prepare is cast in the model, and the compacting of vibrating through operations such as the demoulding, maintenance, drying, sintering, is made Ceramic Composite beam main body then, and must not there be defectives such as pore, crackle, shrinkage porosite in the beam main body.
6. the Ceramic Composite beam main body of making is coated and cover the thick pure aluminium silicate heat-insulating fiber material (3) of 20～30mm, should be during construction with the fiber compacting.
7. on the beam of coating alumina silicate heat-insulating fiber material, coat stainless refractory steel protective guard (4), unload installation as protecting Liang Tihe to be convenient to hang.
8. protect at refractory stainless steel and expand upward spraying Y of cover (4)
2O
3ZrO
2Thermal barrier coating, coat-thickness 0.2～0.5mm plays the thermal boundary effect, possesses wear-resisting, anticorrosion heat-resisting function simultaneously.
9. through above operation, a high furnace baking bed for sintering ball body of powder of iron ore water free beam promptly causes.
Make in the course of processing at water free beam, can be according to the processing requirement of high furnace baking bed for sintering ball body of powder of iron ore work, for adapting to different sites holder bar, the different installation requirement of grid section in the Shaft furnace drying bed, semi-circular portion can depart from kernel of section line layout in the beam body section, this on the make adjusts mould and gets final product, and all the other structures, material, manufacture craft, method are constant.
Claims (5)
1. high furnace baking bed for sintering ball body of powder of iron ore water free beam, it is characterized in that: the cross section of water free beam is to be that semicircle arch bottom is the composite beam body that rectangle is combined into by top, its centre portions is by strengthening the reinforcing bar pottery beam body that base material (1) that the toughening ceramic material the forms superalloy skeleton (2) with internal layout is combined into, formation water free beam main body; Coat one deck pure aluminium silicate refractory thermal insulating material layer (3) around it, the outside coats one deck heat-resistance stainless steel protective guard (4) again, and the protective guard outside surface is wear-resisting, heat-resisting, anti-corrosion spraying thermal barrier coating (5), constitutes multilayer and coats the composite beam body.
2. according to claim 1, it is characterized in that: ceramic base material (1) is by high alumina matter ceramic raw material 60-85%, aluminum phosphate wedding agent 18-8%, stainless heat-resistance steel fiber 12-2%, water 8-3%, intermediate sintering temperature agent 2%, the slurry that is mixed with, form through cast, drying, intermediate sintering temperature, its cross section is the top semicircle, the enhancing toughening ceramic beam body that the bottom rectangle is combined into.
3. according to claim 1, it is characterized in that: the superalloy skeleton is the cage skeleton of being made by the stainless heat-resistance reinforcing bar.
4. according to claim 1, it is characterized in that: the pure aluminium silicate thermal insulation material that coats around the water free beam body is the aluminum silicate fiber material of thickness 20-30mm.
5. according to claim 1, it is characterized in that: water free beam body protective guard (4) is made of stainless refractory steel, the thick Y of outside surface spraying 0.2-0.5mm
2O
3Z
rO
2Thermal barrier coating (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410086129 CN1600879A (en) | 2004-10-27 | 2004-10-27 | Water free beam of high furnace baking bed for sintering ball body of powder of iron ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410086129 CN1600879A (en) | 2004-10-27 | 2004-10-27 | Water free beam of high furnace baking bed for sintering ball body of powder of iron ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1600879A true CN1600879A (en) | 2005-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410086129 Pending CN1600879A (en) | 2004-10-27 | 2004-10-27 | Water free beam of high furnace baking bed for sintering ball body of powder of iron ore |
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| CN (1) | CN1600879A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396803C (en) * | 2006-07-31 | 2008-06-25 | 巩义市建业耐材有限公司 | Air guide wall arch or mansard arch masonry and brick masonry large beam and pelletizing vertical furnace air guide wall |
| CN101509724B (en) * | 2009-04-10 | 2010-08-25 | 唐山市盈心耐火材料有限公司 | Smelting blast deflecting wall for vertical pellet furnace and drying bed |
| CN106392061A (en) * | 2016-10-13 | 2017-02-15 | 广州番禺职业技术学院 | Ceramic particle reinforced wear-resisting insert and manufacturing method thereof |
| CN108727048A (en) * | 2017-04-25 | 2018-11-02 | 宝山钢铁股份有限公司 | A kind of complex sintered machine fire grate bar of cermet and preparation method thereof |
-
2004
- 2004-10-27 CN CN 200410086129 patent/CN1600879A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396803C (en) * | 2006-07-31 | 2008-06-25 | 巩义市建业耐材有限公司 | Air guide wall arch or mansard arch masonry and brick masonry large beam and pelletizing vertical furnace air guide wall |
| CN101509724B (en) * | 2009-04-10 | 2010-08-25 | 唐山市盈心耐火材料有限公司 | Smelting blast deflecting wall for vertical pellet furnace and drying bed |
| CN106392061A (en) * | 2016-10-13 | 2017-02-15 | 广州番禺职业技术学院 | Ceramic particle reinforced wear-resisting insert and manufacturing method thereof |
| CN106392061B (en) * | 2016-10-13 | 2018-06-19 | 广州番禺职业技术学院 | A kind of ceramic particle enhancing wear insert and preparation method thereof |
| CN108727048A (en) * | 2017-04-25 | 2018-11-02 | 宝山钢铁股份有限公司 | A kind of complex sintered machine fire grate bar of cermet and preparation method thereof |
| CN108727048B (en) * | 2017-04-25 | 2021-11-16 | 宝山钢铁股份有限公司 | Metal ceramic composite sintering machine grate bar and preparation method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |