CN104671801B - A kind of corundum abrasion-proof fire-resistant moldable refractory and preparation method thereof - Google Patents
A kind of corundum abrasion-proof fire-resistant moldable refractory and preparation method thereof Download PDFInfo
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Abstract
The present invention provides a kind of corundum abrasion-proof fire-resistant moldable refractory, by corundum, pink fused alumina, zircon, alumina powder, zirconium powder, lanthanum and lanthanide metal oxide micropowder, yttrium powder: 0.01 0.1% forms；Present invention simultaneously provides the preparation method of a kind of corundum abrasion-proof fire-resistant moldable refractory, step includes fine grinding, premix, batch mixing, is dried and selection, inspection, packaging warehouse-in.The present invention improves moldable high temperature bond ability by adding zirconium powder, lanthanum and lanthanide metal oxide micropowder and yttrium powder, improves product resistance to slag, heat stability and service life.
Description
Technical field
The present invention relates to technical field of refractory materials, particularly relate to a kind of corundum abrasion-proof fire-resistant moldable refractory and preparation method thereof.
Background technology
Refractory material refers to that refractoriness is not less than a class Inorganic Non-metallic Materials of 1580 DEG C.Refractory material is widely used in metallurgy, change
The industrial circles such as work, oil, machine-building, silicate, power, in metallurgical industry, consumption is maximum, account for total output 50%～
60%.Various heating furnaces in steel and iron industry, soaking pit, annealing furnace, sintering furnace, and the liner body on electric furnace top can not use one
As sizing refractory material, special plastic refractory can only be used, plastic refractory is with refractory aggregate and powder, raw clay
With chemically composited dose and additive, be formulated mixing, be squeezed into adobe shape, and still have good after package storage certain time
Plasticity, a kind of refractory material of available ramming method construction.Abrasion-proof fire-resistant moldable refractory is the fire that a series of anti-wear performance is excellent
Rigid high-strength refractory is moldable, and intensity is high, and anti-wear performance is excellent, good thermal shock stability, and workability and serviceability are excellent,
It is prone to random molding, is particularly suitable for special wall or the construction at position and quickly, conveniently and effectively implements the maintenance etc. of stove,
Existing plastic refractory on market, owing to bonding agent high temperature strength is inadequate, general work temperature is higher than 1000 DEG C of elevated temperature strengths
The most drastically decline, there is no good high-temperature stability.
Chinese patent CN103833397A discloses a kind of plastic refractory and application thereof, and raw material includes carborundum, aluminium oxide
Powder, silicon powder, dispersant, coagulant and bonding agent, have good workability, setting rate moderate, but due to bonding strength not
Enough, elevated temperature strength is general, and heat-resistant knocking stability is general.Chinese patent CN101591181 discloses a kind of single-component phosphate knot
Close the preparation method of abrasion-proof fire-resistant moldable refractory, with corundum as primary raw material, with alumina powder, schmigel, silicon ash and boric acid as base
Matter, with solid phosphoric acid aluminum as bonding agent, uses aluminous cement to cook accelerator for hardening, and production technology is simple, intensity height long shelf-life,
But also due to bonding strength is inadequate, elevated temperature strength is general, and heat-resistant knocking stability is general.Chinese patent CN102030550A
Disclose a kind of corundum-mullite matter high-strength wearable containing homogeneous material moldable, raw material by high alumina homogeneous material, alumina powder, two
Ultrafine silica powder, clay, phosphoric acid, phosphate dihydrogen aluminum solution and pure calcium aluminate cement etc. form, and have good workability, and intensity is high,
Wearability is good, but also due to bonding strength is inadequate, poor high temperature stability.Chinese patent CN103435362B discloses one
Plant floating plug plastic refractory and preparation method thereof, including floating bead, kyanite, clay, aluminum sulfate, ethylene glycol, methylol
Cellulose and explosion-proof fiber, can have high intensity at middle low temperature, and at high temperature lose intensity, but wide usage is poor, cost
High.
Summary of the invention
In order to solve plastic refractory poor high temperature stability, the problem worn no resistance, we have proposed a kind of corundum abrasion-proof and refractory
Moldable and preparation method thereof, use the present invention can be effectively improved the high-temperature stability of plastic refractory, high temperature abrasion resistance and
His resistance to elevated temperatures.
The present invention is achieved by the following technical solutions:
For achieving the above object, the present invention provides a kind of metal fine powder plastic refractory, is made up of the raw material of following mass percent: just
Beautiful: 65-85%；Pink fused alumina: 10-20%；Zircon: 5-10%；Alumina powder: 1-5%；Zirconium powder: 0.1-1%；Lanthanum
And lanthanide metal oxide micropowder: 0.01-0.1%；Yttrium powder: 0.01-0.1%；Dispersant: 0.5-3%；Bonding agent: 0.5-3%.
Corundum has the performances such as high temperature resistant, corrosion-resistant, high intensity, has the feature that hardness is big, wearability good, intensity is high, but due to it
Volume is relatively big, and corundum cannot be used directly for plastic refractory, by fine grinding disintegrating apparatus, corundum is finely ground into less than 1mm
Grain, substantially increases corundum availability in moldable, and corundum fine powder can act on jointly with other micropowders simultaneously, makes composition
Moldable finer and close, moreover it is possible to improve wearability and corrosion resistance.Pink fused alumina intensity is high, and grinding performance is good, and grinding accuracy is high,
Shape retention is good, mixes with other micropowders with micropowder shape after fine grinding, can be greatly improved moldable wearability.Zircon fine grinding
Afterwards as raw material, moldable thermal shock resistance and resistance to flaking can be improved.Alumina powder and zirconium powder are with the side of displaing microparticle
Formula as raw material, improves material plasticity, makes moldable have higher normal temperature strength and excellent line change performance.Zirconium powder, lanthanum
And the binding material being combined into of lanthanide metal oxide micropowder and yttrium powder is high temperature resistant, stable performance under high temperature, under room temperature, high temperature
Adhesion strength is high, and linear expansion coefficient is high, and antioxygen, sulfur gas attack are strong, and thermal shock coefficient is good.
Preferably, the granularity of above-mentioned raw materials is as follows: corundum: 8-1mm；Pink fused alumina: 8-1mm；Zircon: 8-1mm；
Alumina powder: ＜ 0.088mm；Zirconium powder: d50=5 μm；Lanthanum and lanthanide metal oxide micropowder: d50=5 μm；Yttrium powder:
d50=5 μm.The metal-oxide of fine particle size has multiple crystal structure, and activity is the highest, and can make refractory material after addition can
Plasticity promotes 30-40%.
Preferably, above-mentioned corundum purity is not less than 97%, and pink fused alumina purity is not less than 98%, and zircon purity is not less than 98%,
Alumina powder purity is not less than 99%, and zirconium powder, lanthanum and lanthanide metal oxide micropowder and yttrium powder purity are not less than 99.9%.High
The use of pure raw material, greatly reduces the introducing of silicon dioxide, decreases silicon dioxide and at high temperature generates with magnesium oxide in material
Eutectic, reacts the possibility generating eutectic with aluminium oxide in molten steel, slag and calcium oxide during effectively controlling to use, it is ensured that
Good elevated temperature strength and refractoriness under load, enhance material corrosion resistance, improves the life-span.
Preferably, at least one during above-mentioned dispersant is Quadrafos and/or polyacrylate.The chemical property of Quadrafos
Mainly there is a following four: 1, hydrolysis；2, complexing；3, catalytic action；4, peptization.Quadrafos can be with
Polyvalent cation reacts, and makes these examples greatly be passivated, and can be adsorbed in the surface of other materials simultaneously, forms a kind of adsorbed film,
The physicochemical properties making material surface change, thus play good dispersion effect.
Preferably, above-mentioned bonding agent by aluminium dihydrogen phosphate and sodium lignin sulfonate solution composition, its weight ratio is: 1:1～3.
Aluminium dihydrogen phosphate at normal temperatures with refractory aggregate, after the mixing such as sclerosing agent between 90-110 DEG C constant temperature within 4-24 hour, formed high bonding by force
Degree, just has high anti-folding, resistance to compression, hydration resistance after 350-500 DEG C dries, does not the most send out even if soaking in water or boiling
Soft.And time more than 500 DEG C, inorganic metal micropowder begins to play the effect of bonding agent, aluminium dihydrogen phosphate then plays auxiliary
In conjunction with effect.Sodium lignin sulfonate this kind of organic plasticizers molecule is inserted between granule, Preparation of Fine Powders, weakens reunion
The stress of intergranular, the mobility adding Preparation of Fine Powders, the degree of aggregation reducing between Preparation of Fine Powders, so that granule, micropowder grain
The plasticity of son increases, and improves the plasticity of material, it is ensured that the compact density of material, improves product semi-finished product molding qualification rate.
Sodium lignin sulfonate has good diffusion, its aqueous solution be brown to black, have colloid property, the viscosity of solution is with concentration
Increase and raise.In big specification Wall or floor tile and refractory brick manufacture process, blank raw material microgranule secure bond can be made,
Dry body strength can be made to improve more than 20% 60%.
Present invention simultaneously provides the preparation method of a kind of corundum abrasion-proof fire-resistant moldable refractory, step is as follows:
(1) fine grinding: be respectively fed to corundum, pink fused alumina and zircon pulverize in atomizer mill, is crushed to particle diameter less than 1mm；
(2) premix: corundum, pink fused alumina and the zircon after fine grinding in step (1) and alumina powder are sent into puddle mixer in proportion
Middle premix 5-10 minute；
(3) batch mixing: dispersant is added in step (2) in the raw material of premix, mix 10-30 minute in puddle mixer；Add zirconium
Powder, lanthanum and lanthanide metal oxide micropowder and yttrium powder, mix 10-30 minute in puddle mixer；Add bonding agent, mix 10-30
Minute, make pug；
(4) it is dried: by pug natural drying 24h in step (3), be not higher than 0.05% to moisture；
(5) selection, inspection, packaging warehouse-in.
Compared with prior art, the beneficial effects of the present invention is: improve product resistance to slag, heat stability, improve and use the longevity
Life, Simplified flowsheet.
Detailed description of the invention
Below in conjunction with embodiment, further illustrate present disclosure.Should be appreciated that the enforcement of the present invention is not limited to
The following examples, any pro forma accommodation or the change of being made the present invention both fall within scope；And following reality
Execute the method in example, if no special instructions, be the conventional method of this area.
Embodiment 1:
A kind of corundum abrasion-proof fire-resistant moldable refractory, is made up of the raw material of following mass percent:
Corundum: 70.48%；Pink fused alumina: 15%；Zircon: 8%；Alumina powder: 2%；Zirconium powder: 0.5%；Lanthanum and group of the lanthanides
Metal-oxide micropowder: 0.01%；Yttrium powder: 0.01%；Dispersant: 2%；Bonding agent: 2%.Production stage is as follows:
(1) fine grinding: be respectively fed to corundum, pink fused alumina and zircon pulverize in atomizer mill, is crushed to particle diameter less than 1mm；
(2) premix: corundum, pink fused alumina and the zircon after fine grinding in step (1) and alumina powder are sent into puddle mixer in proportion
Middle premix 8 minutes；
(3) batch mixing: dispersant is added in step (2) in the raw material of premix, mix 20 minutes in puddle mixer；Addition zirconium powder,
Lanthanum and lanthanide metal oxide micropowder and yttrium powder, mix 20 minutes in puddle mixer；Add bonding agent, mix 20 minutes, system
Become pug；
(4) it is dried: by pug natural drying 24h in step (3), be not higher than 0.05% to moisture；
(5) selection, inspection, packaging warehouse-in.Randomization ten parts, detects each performance, and result is as shown in table 1.
Embodiment 2:
A kind of corundum abrasion-proof fire-resistant moldable refractory, is made up of the raw material of following mass percent:
Corundum: 70.4%；Pink fused alumina: 15%；Zircon: 8%；Alumina powder: 2%；Zirconium powder: 0.5%；Lanthanum and group of the lanthanides gold
Genus oxide micropowder: 0.05%；Yttrium powder: 0.05%；Dispersant: 2%；Bonding agent: 2%.
Production stage is substantially the same manner as Example 1.After completing, randomization 10 parts carries out high-temperature behavior test, result such as table 1
Shown in.
Embodiment 3:
A kind of corundum abrasion-proof fire-resistant moldable refractory, is made up of the raw material of following mass percent:
Corundum: 70.3%；Pink fused alumina: 15%；Zircon: 8%；Alumina powder: 2%；Zirconium powder: 0.5%；Lanthanum and group of the lanthanides gold
Genus oxide micropowder: 0.1%；Yttrium powder: 0.1%；Dispersant: 2%；Bonding agent: 2%.
Production stage is substantially the same manner as Example 1.After completing, randomization 10 parts carries out high-temperature behavior test, result such as table 1
Shown in.
Comparative example:
The commercial plastic refractory with aluminium oxide as main component, randomization 10 parts carries out high-temperature behavior test.
Examination criteria
By alumina content, carborundum content and iron oxide content in GB/T6900 Indexs measure each sample；
Tester and NHD-02 refractoriness test furnace detection each sample maximum operation (service) temperature is softened by HRY-02IIP high temperature load；
Sample is placed in calcination 3 hours at 815 DEG C, by its bulk density of YB/T5200 Indexs measure；
Sample is placed in calcination 3 hours at 815 DEG C, uses by its cold conditions compressive resistance of YB/T5201 Indexs measure；
Sample is placed in calcination 3 hours at 1500 DEG C, detects its crushing strength under high temperature；
Sample is placed in calcination 3 hours at 815 DEG C, uses KZJ-5000 electric bending testing machine for cement to be examined by YB/T5201 index
Survey its cold conditions rupture strength；
Sample is placed in calcination 3 hours at 815 DEG C, by its permanent line rate of change of YB/T5203 Indexs measure；
Sample is placed in calcination 3 hours at 1200 DEG C, detects Linear change rate after it burns；
Sample is placed in calcination 3 hours at 815 DEG C, use KRZ-F02 thermal shock resistance testing machine by YB/T2206 Indexs measure its
Thermal shock resistance；
Sample is placed in calcination 3 hours at 815 DEG C, uses HAT-12A high-temperature abrasion test machine by GB/T18301 Indexs measure
Its wearability；
Result is as shown in table 1.
Table 1:
As shown in Table 1, use the corundum abrasion-proof fire-resistant moldable refractory of manufacture of the present invention compared with commercial common corundum plastic refractory, mainly
Composition alumina content is higher, and impurity content is low, and resistance to elevated temperatures is strong, and the most each performance difference is little, after high-temperature process
Each performance is obviously improved.And by table 1, the lanthanum added in the feed and lanthanide metal oxide micropowder and yttrium powder amount meeting
Affecting its resistance to elevated temperatures, and the amount added is the most, high-temperature behavior is the best.
Claims (4)
1. a corundum abrasion-proof fire-resistant moldable refractory, it is characterised in that be made up of the raw material of following mass percent:
Corundum: 65-85%；
Pink fused alumina: 10-20%；
Zircon: 5-10%；
Alumina powder: 1-5%；
Zirconium powder: 0.1-1%；
Lanthanum and lanthanide metal oxide micropowder: 0.01-0.1%；
Yttrium powder: 0.01-0.1%；
Dispersant: 0.5-3%；
Bonding agent: 0.5-3%；
Above-mentioned each raw materials quality percentage ratio summation is 100%；
Its raw material granularity is as follows:
Corundum: 8-1mm；
Pink fused alumina: 8-1mm；
Zircon: 8-1mm；
Alumina powder: ＜ 0.088mm；
Zirconium powder: d50=5μm；
Lanthanum and lanthanide metal oxide micropowder: d50=5μm；
Yttrium powder: d50=5μm；
Described bonding agent is by aluminium dihydrogen phosphate and sodium lignin sulfonate solution composition, and aluminium dihydrogen phosphate and sodium lignin sulfonate solution weight are than for 1:1 ~ 3.
2. a kind of corundum abrasion-proof fire-resistant moldable refractory as claimed in claim 1, it is characterized in that, described corundum purity is not less than 97%, pink fused alumina purity is not less than 98%, zircon purity is not less than 98%, alumina powder purity is not less than 99%, and zirconium powder, lanthanum and lanthanide metal oxide micropowder and yttrium powder purity are not less than 99.9%.
3. a kind of corundum abrasion-proof fire-resistant moldable refractory as claimed in claim 1, it is characterised in that described dispersant is at least one in Quadrafos and/or polyacrylate.
4. the preparation method of the corundum abrasion-proof fire-resistant moldable refractory as described in one of claim 1-3, it is characterised in that step is as follows:
(1) fine grinding: be respectively fed to corundum, pink fused alumina and zircon pulverize in atomizer mill, is crushed to particle diameter less than 1mm；
(2) premix: corundum, pink fused alumina and the zircon after fine grinding in step (1) and alumina powder are sent in puddle mixer in proportion and premixes 5-10 minute；
(3) batch mixing: dispersant is added in step (2) in the raw material of premix, mix 10-30 minute in puddle mixer；Add zirconium powder, lanthanum and lanthanide metal oxide micropowder and yttrium powder, mix 10-30 minute in puddle mixer；Add bonding agent, mix 10-30 minute, make pug；
(4) it is dried: by pug natural drying 24h in step (3), be not higher than 0.05% to moisture；
(5) selection, inspection, packaging warehouse-in.
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| CN106750418B (en) * | 2016-12-16 | 2019-04-12 | 四川大学 | The method that irradiation to crack prepares the PTFE micro mist of good thermal stability |
| CN110835260B (en) * | 2018-08-16 | 2022-11-18 | 上海皕涛耐火材料有限公司 | High-wear-resistance chrome corundum ramming material and application thereof |
| CN110302881B (en) * | 2019-06-29 | 2020-10-02 | 山东耀华特耐科技有限公司 | Production process of crack-resistant wear-resistant plastic material |
| CN110655410A (en) * | 2019-09-26 | 2020-01-07 | 宜兴市宏业保温工程有限公司 | Refractory plastic material for coking furnace door |
| CN115626831A (en) * | 2022-10-24 | 2023-01-20 | 宜兴兴贝耐火材料制品有限公司 | High-wear-resistance zirconium-chromium-based corundum refractory plastic material and preparation method thereof |
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| CN100582057C (en) * | 2007-09-30 | 2010-01-20 | 河南省耕生耐火材料有限公司 | Aluminum chromium zirconia fire resistive material for producing abrasion-proof prefabricated component |
| CN102030552B (en) * | 2010-11-03 | 2012-11-21 | 通达耐火技术股份有限公司 | High-aluminum homogeneity-material chromic-oxide zirconium-oxide system abrasion resistant cast material |
| CN103449823B (en) * | 2012-06-12 | 2015-02-18 | 上海万都电力科技有限公司 | Anti-corrosive corundum wearable plastic refractory and preparation method thereof |
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