CN106811600B - A kind of manufacturing method of non-ferrous metal metallurgy high-temperature heat-resistance pipe - Google Patents
A kind of manufacturing method of non-ferrous metal metallurgy high-temperature heat-resistance pipe Download PDFInfo
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- CN106811600B CN106811600B CN201710000626.6A CN201710000626A CN106811600B CN 106811600 B CN106811600 B CN 106811600B CN 201710000626 A CN201710000626 A CN 201710000626A CN 106811600 B CN106811600 B CN 106811600B
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- temperature heat
- resistance pipe
- ferrous metal
- castable refractory
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
- C04B35/105—Refractories from grain sized mixtures containing chromium oxide or chrome ore
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
Abstract
The invention discloses a kind of non-ferrous metal metallurgy manufacturing methods of high-temperature heat-resistance pipe, include the following steps: that (1) prepares castable refractory, the castable refractory is made of the raw material of following weight proportion: specification is 15~20 parts of 3~5mm bauxites aggregate, 33~37 parts of 1~3mm bauxites aggregate, 10~15 parts of 0~1mm bauxites aggregate, specification for less than 14~18 parts of 0.088mm magnesium chromium powder, 10~15 parts of aluminous cement, α-Al2O35~10 parts of powder, the water for accounting for mixed raw material total weight 7% is added after above-mentioned raw materials are sufficiently mixed, is sufficiently stirred；(2) castable refractory configured in step (1) is added in extrusion equipment in 30 minutes and outer surface of steel tube pressing and forming and is combined closely, formation flame retardant coating；(3) high-temperature heat-resistance pipe manufactured in step (2) is placed on natural drying 30 days on steelframe, evaporates the moisture in flame retardant coating.The expansion character of novel refractory and steel pipe of the invention matches, and overcomes structural damage caused by expanding under hot environment because of steel pipe, long and at low cost using the time.
Description
Technical field
The present invention relates to metallurgy industries, and in particular to a kind of manufacturing method of non-ferrous metal metallurgy high-temperature heat-resistance pipe.
Background technique
In the smelting process of the non-ferrous metals such as copper, lead, zinc, need to be blown into compress wind and reducing agent etc. into high-temperature fusant
Reaction medium, with the reinforcing of smelting technique, original uses heat resisting pipe and Heat-Resisting Stainless Steel Tube logical as the conveying of reaction medium
Road has not adapted to the needs of strengthening smelting, and heat resisting pipe and Heat-Resisting Stainless Steel Tube service life are short, cannot go deep into the long period
Into high-temperature fusant, the reaction medium of the conveying bad dispersibility in high-temperature fusant is thereby resulted in, reaction contact surface is reduced, is extended
When smelting furnace and influence product quality.
In the prior art, it is typically employed on metal tube and smears fire resisting mud product formation flame retardant coating, this method is to metal tube
Melt scaling loss resistant to high temperatures plays certain protective role, but since fire clay melt attack resistant to high temperatures is poor, causes product consumption big.
The excellent material of the existing effective selection of refractory high temperature resistance of high-temperature heat-resistance, such as corundum, SiC.But since steel heat is swollen
Swollen rate is about 1.5~3 times of refractory material coefficient of thermal expansion, and under 1250~1300 DEG C of smelting temperatures, refractory material is easy to
It cracks, or even falls off since steel pipe expands.Now check that crack occurs in the refractory material majority of the high-temperature heat-resistance pipe after use, only
It is that the material having selects preferably, the refractory material and steel pipe adhesion strength after being damaged are also preferable, large area do not occur and fall off.Have
Product take and be wrapped among steel pipe and refractory material with flameproof fabric, both offset expansion it is inconsistent caused by damage, but by
In the heated heating having time span of high-temperature heat-resistance pipe, steel pipe speed of expansion is extremely difficult to synchronous with flameproof fabric scaling loss speed.Fire prevention
Cloth thickness is small, acts on unobvious, the big Shi Yixian scaling loss flameproof fabric of thickness, and high-temperature fusant invades scaling loss steel pipe.
Summary of the invention
The present invention devises one kind in view of the deficiencies of the prior art with good material property and quality is stablized, and meets high
The manufacturing method of non-ferrous metal metallurgy high-temperature heat-resistance pipe under warm use environment.
The present invention is in order to achieve the above object, using following scheme: a kind of manufacture of non-ferrous metal metallurgy high-temperature heat-resistance pipe
Method includes the following steps:
(1) prepare castable refractory, the castable refractory is made of the raw material of following weight proportion: specification is 3~5mm
15~20 parts of bauxites aggregate, specification are 33~37 parts of 1~3mm bauxites aggregate, specification is 10~15 parts of 0~1mm bauxites aggregate, rule
Lattice are less than 14~18 parts of 0.088mm magnesium chromium powder, 10~15 parts of aluminous cement, α-Al2O35~10 parts of powder, above-mentioned raw materials are filled
The water for accounting for mixed raw material total weight 7% is added after dividing mixing, is sufficiently stirred；
(2) castable refractory configured in step (1) is added in extrusion equipment and steel pipe surface face pressure in 30 minutes
Synthesis type is simultaneously combined closely, and flame retardant coating is formed；
(3) high-temperature heat-resistance pipe manufactured in step (2) is placed on natural drying 30 days on steelframe, makes the water in flame retardant coating
Divide evaporation.
Further, the castable refractory is made of the raw material of following weight proportion: specification is 3~5mm bauxites aggregate
17 parts, specification be 35 parts of 1~3mm bauxites aggregate, specification be 13 parts of 0~1mm bauxites aggregate, specification be less than 0.088mm magnesium chromium
16 parts of powder, 12 parts of aluminous cement, α-Al2O37 parts of powder.
Further, the chemical component of the bauxites aggregate of each specification are as follows: Al2O3> 75%, Fe2O3< 1.5%, it is described
The chemical component of magnesium chromium powder are as follows: MgO ﹥ 85%, Cr2O3﹥ 5%.
Further, the extrusion equipment is screw extruder, and it is simple to be suitable for manufacture structure by crushing strength 12MPa
Straight high-temperature heat-resistance pipe.
Further, the extrusion equipment is hydraulic press injector, and crushing strength 18MPa, being suitable for manufacture, structure is complicated
Bending high-temperature heat-resistance pipe.
Further, the flame retardant coating with a thickness of 10~13mm.
Compared to the prior art the present invention, is had the following advantages and beneficial effects:
1, the expansion character of novel refractory of the invention and steel pipe matches, and overcomes under hot environment because steel pipe is swollen
Structural damage caused by swollen；
2, novel refractory of the invention has preferable corrosion resistance to high-temperature fusant, improves high-temperature heat-resistance pipe
Using effect.
3, refractory material and steel pipe combine closely to form entirety, have played the toughness of refractory material high temperature resistant property and steel pipe
And scour resistance, while when refractory material and steel pipe combine, is very close to each other, the performance that can mutually make the most of the advantage and protected, have
Effect extends the time that reaction medium is conveyed in high-temperature fusant, and the depth for being inserted into high-temperature fusant is longer, keeps reaction more abundant.
4, long using the time, reduce smelting processing cost.
Detailed description of the invention
Fig. 1 is cross-sectional structure schematic diagram of the present invention；
In figure: 1, steel pipe, 2, flame retardant coating.
Specific embodiment
Embodiment 1:
A kind of non-ferrous metal metallurgy manufacturing method of high-temperature heat-resistance pipe, includes the following steps:
(1) prepare castable refractory, the castable refractory is made of the raw material of following weight proportion: specification is 3~5mm
17 parts of bauxites aggregate, specification are 35 parts of 1~3mm bauxites aggregate, specification be 13 parts of 0~1mm bauxites aggregate, specification be less than
16 parts of 0.088mm magnesium chromium powder, 12 parts of aluminous cement, α-Al2O3It 7 parts of powder, is added after above-mentioned raw materials are sufficiently mixed and accounts for mixing original
The water for expecting total weight 7%, is sufficiently stirred；
(2) castable refractory configured in step (1) is added in extrusion equipment and steel pipe surface face pressure in 30 minutes
Synthesis type is simultaneously combined closely, and flame retardant coating is formed；
(3) high-temperature heat-resistance pipe manufactured in step (2) is placed on natural drying 30 days on steelframe, makes the water in flame retardant coating
Divide evaporation.
Non-ferrous metals smelting works can be supplied directly to by high-temperature heat-resistance pipe made of above-mentioned steps to use.
As shown in Figure 1, being steel pipe 1 inside manufactured high-temperature heat-resistance pipe, one layer of flame retardant coating 2, flame retardant coating 2 are wrapped up in outer surface
Combine closely with steel pipe 1, flame retardant coating with a thickness of 10~13mm, steel pipe is with a thickness of 2.8~3mm.
The effective refractory material of high-temperature heat-resistance will have following characteristic: be that coefficient of thermal expansion and steel pipe are adapted first, in high temperature
Good structural strength is kept under use condition；Second is to have good antiscour, anti-erosion energy to non-ferrous metal high-temperature fusant
Power；Third is that adhesion strength is good, convenient for maintenance transport.Since non-ferrous metal high-temperature fusant is in meta-alkalescence, in selection of refractory
The magnalium chromium material of property meta-alkalescence, uses aluminous cement as bonding agent, with α-Al2O3Powder makees swelling agent.Wherein, each rule
The chemical component of the bauxites aggregate of lattice are as follows: Al2O3> 75%, Fe2O3< 1.5%, the chemical component of the magnesium chromium powder are as follows: MgO ﹥
85%, Cr2O3﹥ 5%.
For manufacturing the simple straight high-temperature heat-resistance pipe of structure, the extrusion equipment used can be screw extruder, squeeze
Intensity is 12Mpa, and steel pipe and refractory material enter extrusion chamber from different directions, and bonding is completed in extrusion chamber, is gone out with extrusion chamber
The refractory material layer thickness of mouthful diameter control package steel pipe is, it can be achieved that work continuously, high-efficient, the high-temperature heat-resistance pipe knot produced
Structure intensity is high, and refractory thickness is uniform and smooth.
For manufacturing complicated bending high-temperature heat-resistance pipe, the extrusion equipment used can be hydraulic press injector, squeeze
Intensity is 18Mpa, makes refractory material uniform force pressure is attached to be integrated on steel pipe.
In addition, the selection for steel pipe further reduced without particular/special requirement without the special steel materials such as heat resisting pipe are used
Cost.
The high-temperature heat-resistance pipe is long using the time, is counted with actual production, compares common heat resisting pipe or Heat-Resisting Stainless Steel Tube,
2~5 are reduced to from every furnace using 15~20, every cost is only the 1/5 of Heat-Resisting Stainless Steel Tube.With being averaged for 2016 years
Material cost calculates, and every furnace can save 3000~3200 yuan of smelting cost, and daily by 2.5 furnace gauges of production, whole year can save smelting
Processing cost takes 200 Yu Wanyuan, greatly reduces production cost.
Embodiment 2:
A kind of non-ferrous metal metallurgy manufacturing method of high-temperature heat-resistance pipe, includes the following steps:
(1) prepare castable refractory, the castable refractory is made of the raw material of following weight proportion: specification is 3~5mm
15 parts of bauxites aggregate, specification are 33 parts of 1~3mm bauxites aggregate, specification be 10 parts of 0~1mm bauxites aggregate, specification be less than
14 parts of 0.088mm magnesium chromium powder, 10 parts of aluminous cement, α-Al2O3It 5 parts of powder, is added after above-mentioned raw materials are sufficiently mixed and accounts for mixing original
The water for expecting total weight 7%, is sufficiently stirred；
(2) castable refractory configured in step (1) is added in extrusion equipment and steel pipe surface face pressure in 30 minutes
Synthesis type is simultaneously combined closely, and flame retardant coating is formed；
(3) high-temperature heat-resistance pipe manufactured in step (2) is placed on natural drying 30 days on steelframe, makes the water in flame retardant coating
Divide evaporation.
Non-ferrous metals smelting works can be supplied directly to by high-temperature heat-resistance pipe made of above-mentioned steps to use.
Embodiment 3:
A kind of non-ferrous metal metallurgy manufacturing method of high-temperature heat-resistance pipe, includes the following steps:
(1) prepare castable refractory, the castable refractory is made of the raw material of following weight proportion: specification is 3~5mm
20 parts of bauxites aggregate, specification are 37 parts of 1~3mm bauxites aggregate, specification be 15 parts of 0~1mm bauxites aggregate, specification be less than
18 parts of 0.088mm magnesium chromium powder, 15 parts of aluminous cement, α-Al2O3It 10 parts of powder, is added after above-mentioned raw materials are sufficiently mixed and accounts for mixing
The water of raw material gross weight 7%, is sufficiently stirred；
(2) castable refractory configured in step (1) is added in extrusion equipment and steel pipe surface face pressure in 30 minutes
Synthesis type is simultaneously combined closely, and flame retardant coating is formed；
(3) high-temperature heat-resistance pipe manufactured in step (2) is placed on natural drying 30 days on steelframe, makes the water in flame retardant coating
Divide evaporation.
Non-ferrous metals smelting works can be supplied directly to by high-temperature heat-resistance pipe made of above-mentioned steps to use.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications, these improvements and modifications can also be made
Also it should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of non-ferrous metal metallurgy manufacturing method of high-temperature heat-resistance pipe, it is characterised in that be made of following steps:
(1) prepare castable refractory, the castable refractory is made of the raw material of following weight proportion: specification is 3~5mm high alumina
15~20 parts of aggregate, specification are 33~37 parts of 1~3mm bauxites aggregate, specification is 10~15 parts of 0~1mm bauxites aggregate, specification is
Less than 14~18 parts of 0.088mm magnesium chromium powder, 10~15 parts of aluminous cement, α-Al2O3It is 5~10 parts of powder, above-mentioned raw materials are sufficiently mixed
The water for accounting for mixed raw material total weight 7% is added after conjunction, is sufficiently stirred；
(2) castable refractory configured in step (1) is added in extrusion equipment in 30 minutes and is pressed into outer surface of steel tube
Type is simultaneously combined closely, and flame retardant coating is formed, and the extrusion equipment is screw extruder, and crushing strength 12MPa or extrusion equipment are
Hydraulic press injector, crushing strength 18MPa；
(3) high-temperature heat-resistance pipe manufactured in step (2) is placed on natural drying 30 days on steelframe, steams the moisture in flame retardant coating
Hair.
2. a kind of manufacturing method of non-ferrous metal metallurgy high-temperature heat-resistance pipe as described in claim 1, it is characterised in that: described
Castable refractory is made of the raw material of following weight proportion: specification is 17 parts of 3~5mm bauxites aggregate, specification is 1~3mm high alumina
35 parts of aggregate, specification be 13 parts of 0~1mm bauxites aggregate, specification be less than 16 parts of 0.088mm magnesium chromium powder, 12 parts of aluminous cement,
α-Al2O37 parts of powder.
3. a kind of manufacturing method of non-ferrous metal metallurgy high-temperature heat-resistance pipe as described in claim 1, it is characterised in that: described
The chemical component of the bauxites aggregate of each specification are as follows: Al2O3> 75%, Fe2O3< 1.5%, the chemical component of the magnesium chromium powder are as follows: MgO
﹥ 85%, Cr2O3﹥ 5%.
4. a kind of manufacturing method of non-ferrous metal metallurgy high-temperature heat-resistance pipe as described in claim 1, it is characterised in that: described
Flame retardant coating with a thickness of 10~13mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000626.6A CN106811600B (en) | 2017-01-03 | 2017-01-03 | A kind of manufacturing method of non-ferrous metal metallurgy high-temperature heat-resistance pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000626.6A CN106811600B (en) | 2017-01-03 | 2017-01-03 | A kind of manufacturing method of non-ferrous metal metallurgy high-temperature heat-resistance pipe |
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| Publication Number | Publication Date |
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| CN106811600A CN106811600A (en) | 2017-06-09 |
| CN106811600B true CN106811600B (en) | 2019-04-12 |
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| CN110760885B (en) * | 2019-11-27 | 2020-07-31 | 镇江慧诚新材料科技有限公司 | Suspension type fire-resistant heat preservation subassembly for high capacity oxygen aluminium coproduction electrolysis trough |
| CN113681707B (en) * | 2021-07-19 | 2024-01-09 | 莫远志 | Manufacturing equipment of high-temperature heat-resistant pipe for nonferrous metal smelting by extrusion method |
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| CN1058952C (en) * | 1995-01-14 | 2000-11-29 | 济南东方工业炉新技术开发总公司 | High-temp and high-strength refractory deposited material and its prepn process |
| CN1321087C (en) * | 2005-12-13 | 2007-06-13 | 刘志禹 | Fire proofing composition for pouring |
| CN101293777B (en) * | 2008-06-25 | 2011-05-18 | 河南省耕生耐火材料有限公司 | High-strength light weight castable refractory |
| CN103114178B (en) * | 2013-03-06 | 2014-09-24 | 攀钢集团攀枝花钢铁研究院有限公司 | RH refining furnace, insertion tube thereof and preparation method |
| CN104329539B (en) * | 2014-10-28 | 2016-08-17 | 宁夏天纵泓光余热发电技术有限公司 | There is the mineral heating furnace flue vacuum heat-preserving tube of the Zirconium oxide fibre refractory casting bed of material |
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