CN103553688B - High-strength abrasion-proof refractory castable - Google Patents
High-strength abrasion-proof refractory castable Download PDFInfo
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Abstract
A kind of high-strength abrasion-proof refractory castable, comprise coarse aggregate, middle aggregate, fine aggregate, binding agent, silicon powder, alumina powder and water, wherein the parts by weight of above-mentioned raw materials are: coarse aggregate 20 ~ 25, middle aggregate accounts for 35 ~ 40, fine aggregate accounts for 15 ~ 20, binding agent 5 ~ 10, silicon powder 5 ~ 10, alumina powder 10 ~ 15, water 1 ~ 5.Wherein, coarse aggregate is high grade bauxite; Middle aggregate comprises silicon carbide and mullite, and fine aggregate is high grade bauxite; Wherein, comprise following parts by weight component at binding agent to make: water glass 25 ~ 35, Magnesium Silicate q-agent 15 ~ 25, Sodium hexametaphosphate 99 30 ~ 60.
Description
Technical field
The invention belongs to technical field of refractory materials, particularly relate to the high-strength abrasion-proof refractory castable that a kind of wear resistance is good.
Background technology
Compared with qualitative refractory product, with refractory castable be that the unshape refractory of representative has that technical process is short, production energy consumption and cost is low, easy to use, applied widely, globality and the advantage such as result of use is good, thus worldwide obtain and develop rapidly, its proportion shared in whole refractory materials is more and more higher.In the country of some refractory technologies advanced person, the output of unshape refractory is close to the output even having exceeded setting goods.Such as, the ratio that current Japanese unshape refractory output accounts for whole refractory materials reaches about 60%; The U.S. be about 50%; English, moral, Fa Deng state are 40% ~ 50%.Nowadays, refractory castable has been widely used in the high temperature service of the industrial circles such as metallurgy, building materials, electric power, chemical industry.
At present, in wear-resistant castable field, prior art mainly relies in mould material adds the high rigidity such as corundum, silicon carbide material and makes unshape refractory obtain good wear resistance.For the material at high temperature used, to also justifiable.But the refractory materials that middle low temperature is used this both wasted resource, turn increase cost.So, there is again the refractory castable of excellent abrasive resistance, to replace now widely used corundum wear-resistant castable under needing to develop a kind of cheap and middle cold condition.
Summary of the invention
In view of this, for the deficiencies in the prior art, the invention provides the high-strength abrasion-proof refractory castable of the low cost of a kind of physical strength and wear resisting property excellence.
A kind of high-strength abrasion-proof refractory castable, comprise coarse aggregate, middle aggregate, fine aggregate, binding agent, silicon powder, alumina powder and water, wherein the parts by weight of above-mentioned raw materials are: coarse aggregate 20 ~ 25, middle aggregate accounts for 35 ~ 40, fine aggregate accounts for 15 ~ 20, binding agent 5 ~ 10, silicon powder 5 ~ 10, alumina powder 10 ~ 15, water 1 ~ 5.Wherein, coarse aggregate is high grade bauxite; Middle aggregate comprises silicon carbide and mullite, and fine aggregate is high grade bauxite; Wherein, comprise following parts by weight component at binding agent to make: water glass 25 ~ 35, Magnesium Silicate q-agent 15 ~ 25, Sodium hexametaphosphate 99 30 ~ 60.
High-strength abrasion-proof refractory castable of the present invention is by using high grade bauxite as coarse aggregate, using silicon carbide and mullite as middle aggregate, again using high grade bauxite as fine aggregate, add Reactive alumina and accelerate solid state reaction, add by water glass simultaneously, Magnesium Silicate q-agent, the binding agent that Sodium hexametaphosphate 99 is formed, make high-strength abrasion-proof refractory castable can rapid coagulation, and coarse aggregate in high-strength abrasion-proof refractory castable can be increased, middle aggregate, fine aggregate and silicon powder, the lubricity of alumina powder, then the density after the condensation of high-strength abrasion-proof refractory castable is ensured, in addition, add silicon powder to improve the resistance to acid ability of mould material, replace corundum with alumina, silicon carbide and mullite, reduce raw materials cost, do not affect again the object of mechanical strength and wear resistance.
Embodiment
A kind of high-strength abrasion-proof refractory castable, comprise coarse aggregate, middle aggregate, fine aggregate, binding agent, silicon powder, alumina powder and water, wherein the parts by weight of above-mentioned raw materials are: coarse aggregate 20 ~ 25, middle aggregate accounts for 35 ~ 40, fine aggregate accounts for 15 ~ 20, binding agent 5 ~ 10, silicon powder 5 ~ 10, alumina powder 10 ~ 15, water 1 ~ 5.Wherein, coarse aggregate is high grade bauxite; Middle aggregate comprises silicon carbide and mullite, and fine aggregate is high grade bauxite; Wherein, comprise following parts by weight component at binding agent to make: water glass 25 ~ 35, Magnesium Silicate q-agent 15 ~ 25, Sodium hexametaphosphate 99 30 ~ 60.
Refractory materials is in order to reach desirable fireproof high-temperature resistant effect, the structure formation of what is called " dense accumulation " must be formed, this structure formation is thick, middle aggregate by occupying space, material large portion, the fine aggregate in thick, the middle aggregate space of filling, the micro mist in the carse, medium and small aggregate space of filling obtain, therefore select very important to the particle diameter of refractory castable kinds of ingredients, in the present embodiment, the size of described coarse aggregate is 3.0 ~ 2.0mm; In described middle aggregate, the size of each component is 1.5mm ~ 1mm; The size of described fine aggregate is 0.5 ~ 0.01mm.In addition, binding agent mesosilicic acid sodium is 30 parts, Magnesium Silicate q-agent 20 parts, Sodium hexametaphosphate 99 50 parts time, can ensure that the density after the condensation effect of high-strength abrasion-proof refractory castable and condensation is best.
The alumina powder added in the present invention is activated alumina, and the principal crystalline phase of activated alumina is α ~ Al
2o
3physico-chemical property is d≤2.0 μm, true density>=3.95g/cm, Na O is less than or equal to 0.1%, activated alumina can make the refractory castable apparent porosity of cast less, further, utilize silicon carbide high thermal conductivity to improve the heat-shock resistance of mould material, and by the oxidation of silicon carbide, form one deck SiO at refractory surface
2settling shutoff pore, utilizes silicon powder shutoff refractory casting material layer internal porosity, improves the resistance to fouling of refractory casting material with this.
Embodiment 1
(1) preparation of mould material:
Aggregate 35,0.5 ~ 0.01mm fine aggregate 15 in 3.0 ~ 2.0mm coarse aggregate, 20,1.5mm ~ 1mm, binding agent 5, silicon powder 5, alumina powder 15, water 5.By said ratio, each raw material is weighed, accompany and, obtaining the slurry of good fluidity, testing physicals through being shaped, after maintenance and thermal treatment.
(2) quantitative measurement:
After 110 DEG C × 24h is dried, folding strength 22.4MPa, compressive strength 164.7MPa;
After 1100 DEG C × 3H process, folding strength 18.4MPa, compressive strength 149.5MPa;
After 1350 DEG C × 3H process, folding strength 19.4MPa, compressive strength 161.3MPa.
Embodiment 2
(1) preparation of mould material:
Adopt coarse aggregate 22, middle aggregate accounts for 38, and fine aggregate accounts for 20, binding agent 7, silicon powder 2, alumina powder 8, water 3.By said ratio, each raw material is weighed, accompany and, obtaining the slurry of good fluidity, testing physicals through being shaped, after maintenance and thermal treatment.
(2) physicals detects:
After 110 DEG C × 24h is dried, folding strength 20.8MPa, compressive strength 150.4MPa;
After 1100 DEG C × 3H process, folding strength 15.8MPa, compressive strength 127.4MPa;
After 1350 DEG C × 3H process, folding strength 15.7MPa, compressive strength 145.7MPa.
Embodiment 3
(1) preparation of mould material:
Adopt coarse aggregate 25, middle aggregate accounts for 25, and fine aggregate accounts for 20, binding agent 10, silicon powder 3, alumina powder 15, water 2.By said ratio, each raw material is weighed, accompany and, obtaining the slurry of good fluidity, testing physicals through being shaped, after maintenance and thermal treatment.
(2) physicals detects:
After 110 DEG C × 24h is dried, folding strength 19.8MPa, compressive strength 152.8MPa;
After 1100 DEG C × 3H process, folding strength 15.2MPa, compressive strength 131.4MPa;
After 1350 DEG C × 3H process, folding strength 18.7MPa, compressive strength 155.3MPa.
As described above, be only preferred embodiment of the present invention, when not limiting scope of the invention process with this, the simple equivalence namely generally done according to the present patent application the scope of the claims and invention description content changes and modifies, and all still remains within the scope of the patent.
Claims (4)
1. a high-strength abrasion-proof refractory castable, it is characterized in that: comprise coarse aggregate, middle aggregate, fine aggregate, binding agent, silicon powder, alumina powder and water, wherein the parts by weight of above-mentioned raw materials are: coarse aggregate 20 ~ 25, middle aggregate accounts for 35 ~ 40, fine aggregate accounts for 15 ~ 20, binding agent 5 ~ 10, silicon powder 5 ~ 10, alumina powder 10 ~ 15, water 1 ~ 5; Wherein, coarse aggregate is high grade bauxite; Middle aggregate comprises silicon carbide and mullite, and fine aggregate is high grade bauxite; Wherein, comprise following parts by weight component at binding agent to make: water glass 25 ~ 35, Magnesium Silicate q-agent 15 ~ 25, Sodium hexametaphosphate 99 30 ~ 60.
2. high-strength abrasion-proof refractory castable according to claim 1, is characterized in that: the size of described coarse aggregate is 3.0 ~ 2.0mm; In described middle aggregate, the size of each component is 1.5mm ~ 1mm; The size of described fine aggregate is 0.5 ~ 0.01mm.
3. high-strength abrasion-proof refractory castable according to claim 2, is characterized in that: binding agent mesosilicic acid sodium is 30 parts, Magnesium Silicate q-agent 20 parts, Sodium hexametaphosphate 99 50 parts.
4. high-strength abrasion-proof refractory castable according to claim 2, is characterized in that: the parts by weight of above-mentioned raw materials are specially: coarse aggregate 20, middle aggregate 35, fine aggregate 15, binding agent 5, silicon powder 5, alumina powder 15, water 5.
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| CN201310551506.7A CN103553688B (en) | 2013-11-09 | 2013-11-09 | High-strength abrasion-proof refractory castable |
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| CN103553688B true CN103553688B (en) | 2015-09-16 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016112042B4 (en) * | 2016-06-30 | 2019-10-02 | Refratechnik Holding Gmbh | Heat-insulating, refractory molded body, in particular plate, and process for its preparation and its use |
| CN108675805A (en) * | 2018-06-14 | 2018-10-19 | 玉和建设有限公司 | A kind of mixed binding fire-resistant abrasion-proof is moldable |
| CN108821784A (en) * | 2018-06-19 | 2018-11-16 | 佘春霞 | A kind of high carbon black environmental protection castable in main trough |
| CN109678537A (en) * | 2019-01-25 | 2019-04-26 | 江苏长城窑炉工程有限公司 | A kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material |
| CN111747735A (en) * | 2020-07-09 | 2020-10-09 | 郑州市科源耐火材料有限公司 | Energy-saving environment-friendly refractory castable and refractory brick for zinc smelting volatilizing kiln and preparation method of refractory brick |
| CN111892392A (en) * | 2020-08-11 | 2020-11-06 | 中钢南京环境工程技术研究院有限公司 | Preparation method of complex-shaped refractory heat-insulating tile for heavy-duty gas turbine |
| CN115536408B (en) * | 2022-10-08 | 2023-04-28 | 宜兴兴贝耐火材料制品有限公司 | Silicon carbide self-flow castable for blast furnace lining and casting construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367668A (en) * | 2008-09-25 | 2009-02-18 | 武汉钢铁(集团)公司 | Pouring material for manufacturing pellet ore rotary kiln and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101367668A (en) * | 2008-09-25 | 2009-02-18 | 武汉钢铁(集团)公司 | Pouring material for manufacturing pellet ore rotary kiln and manufacturing method thereof |
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