CN1458123A - Refractory material for circular fluidized bed boiler - Google Patents
Refractory material for circular fluidized bed boiler Download PDFInfo
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- CN1458123A CN1458123A CN 03131557 CN03131557A CN1458123A CN 1458123 A CN1458123 A CN 1458123A CN 03131557 CN03131557 CN 03131557 CN 03131557 A CN03131557 A CN 03131557A CN 1458123 A CN1458123 A CN 1458123A
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Abstract
The present invention relates to refractory material for circular fluidized bed boiler, and is especially a kind of refractory material for circular fluidized bed boiler made with cheap raw material. The raw material includes baked alumina 55-80 wt%, silicon carbide or brown corundum 10-25 wt%, silica and/or alumina micro powder 5-10 wt% and binding agent 5-10 wt%. The refractory material has high grain binding strength, low porosity and excellent wear resistance, is suitable for use in large fluidized bed boiler over 440 ton, and has relatively low cost.
Description
Technical field
The present invention relates to a kind of refractory material for circulating fluidized bed boiler, especially a kind of refractory material for circulating fluidized bed boiler based on cheap raw material.
Background technology
Circular fluid bed, a large amount of 1-10mm granule materials is in fluidisation and boiling state fully in the burner hearth in service, especially the fine particle of upper furnace 0-2mm, carried secretly by flue gas and to enter cyclonic separator, after flue gas and its recycle stock of carrying secretly enter cyclonic separator with the flow velocity up to about 18m/s, be tilted to down helicoidal flow, speed is far above the movement velocity in burner hearth.And the fine particle that is separated, get back to burner hearth again through material returning device, in the circulation loop of this sealing, a large amount of fluidisations material do not stop to be in during high temperature circulation flows, make inner lining refractory very easily be worn, and the boiler tonnage is big more, the fluidisation material is many more, erosive wear to refractory materials is terrible more, and general refractory materials used only 5-6 month.
Chinese patent 00111214 discloses a kind of refractory materials that is exclusively used in circular fluid bed, but it is the high-grade refractory materials of corundum, silicon carbide synthetic that has adopted relatively large price relatively costly, thereby make that the refractory product price is higher, practical application is difficult to bear, thereby is difficult to obtain the large-scale popularization application; Secondly, the moulding of the more employing vibrating casting of this refractory product, production efficiency is lower, is not suitable for producing in enormous quantities; Even mechanical pressing goods (example 4), it also is a kind of not burned product with the phosphoric acid wedding agent, yet not burned product in use the phosphoric acid wedding agent can produce decomposition, can cause goods to peel off, eliminated by present large circulating fluidized bed boiler, in design, do not adopted not burned product of this phosphoric acid wedding agent.Therefore seek a kind of both economicly, wear-resisting again, and over-all properties can satisfy the harsh working conditions of circular fluid bed again, and the refractory materials of especially large-scale (more than 440T/H) circular fluid bed is the actual solution that presses for.
Goal of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, it is major ingredient with low-cost raw material that a kind of employing is provided, and price is low, and wear resistance is good, and over-all properties is excellent, can satisfy circulation fluidized bed pot refractory materials fully.
The object of the invention realizes, the main improvement is to adopt cost of material more cheap, the fine and close relative burning alumina big than the conventional aluminium alumina with hardness and volume density is major ingredient, suitably mix a certain amount of silicon carbide or brown corundum, and in the matrix material, introduce micro mist, especially can react the silicon, the aluminium micro mist that generate mullite, to guarantee that higher physical strength and wear resistance are arranged, thereby make the refractory materials of mainly forming by low-grade raw material, can guarantee to satisfy circular fluid bed, the especially over-all properties of large circulating fluidized bed boiler service requirements.Specifically, refractory material for circulating fluidized bed boiler of the present invention is characterized in that consisting of the burning alumina of 55-80% (weight, down with), the silicon carbide of 10-25% or brown corundum, 5-10% silicon, aluminium micro mist or silicon powder, the wedding agent of 5-10%.
Refractory materials of the present invention according to the different positions of using of circular fluid bed, can be made as the refractory brick sintered article; Also can be to combine the on-the-spot mould material of using.Burn alumina and make the goods material, adopt 60-80%, make mould material, adopt 60-70%.Synthetic material silicon carbide, brown corundum when making the sintered article raw material, add with coarse grained skeleton material form, and preferentially select silicon carbide for use, keep wear resistance constant substantially, can improve the thermal shock resistance of sintered article; When making the mould material raw material, then add, can both add simultaneously, but the present invention preferentially selects the lower brown corundum of price for use, can fall cost with matrix fine powder material form.Wedding agent according to the refractory materials composition form, is made wedding agent by common form sintered article with clay, and mould material is made wedding agent with refractory cements.The burning alumina that consists of 60-70% that the present invention is comparatively suitable, the silicon carbide of 15-20% or brown corundum, 5-10% silicon, aluminium micro mist or silicon powder, the wedding agent of 5-10%.
Refractory materials of the present invention is formed mode by common refractory materials, is made up of macrobead skeleton material and small-particle matrix material, and goods adopt three grades of gratings, and mould material adopts the level Four grating, to guarantee that bigger tap density is arranged.Skeleton material and matrix material particle size range are pressed the common grain composition collocation of refractory materials, have no special requirements.Burn alumina (rotary kiln is fired) among the present invention, make the skeleton material with 50-85% especially, it is comparatively suitable that the 15-50% fine powder is made the matrix material; By common refractory materials form, make mould material and use the weight ratio that should suitably improve the skeleton material.
According to above-mentioned design, refractory brick of the present invention burns the alumina aggregate by 35-65%, the 10-25% carborundum aggregate, and 10-35% burns alumina fine powder matrix material, 5-10% silicon, aluminium micro mist (as＜5 microns), 4-8% clay wedding agent is formed.Silicon powder and aluminium micro mist in the refractory brick of the present invention make both react in sintering process and generate mullite, thereby strengthened intergranular bonding strength, help improving goods bulk strength and wear resistance.Described silicon powder makes it just can generate mullite with the reaction of aluminium micro mist at a lower temperature especially to adopt active micro silicon powder (iron alloy byproduct) better, so also helps reducing the goods sintering temperature.Preferentially select for use silicon carbide to make aggregate in the refractory brick of the present invention, it is good mainly to be based on the more brown relatively corundum of silicon carbide thermal shock resistance, the good thermal shock stability of sintered article can remedy the relatively poor relatively deficiency of sintered article thermal shock resistance, and wear resistance does not reduce yet like this.For further improving sintered article intensity, the present invention also can add the aluminum phosphate wedding agent of the lower 3-6% of price again, forms inorganic and organic combined binder, simultaneously Al in the aluminum phosphate
2O
3Can with free SiO in the clay wedding agent
2Reaction generates mullite in sintering process, helps the abundant sintering of goods, is favourable to improving the goods sintering strength also.
Mould material of the present invention is burnt the alumina aggregate by 45-70%, 10-25% palm fibre corundum fine powder matrix material, and 10-25% burns alumina fine powder matrix material, the 5-10% silicon powder, the 4-8% pure calcium aluminate cement is formed.Adding partial crystallization densification in the matrix material of mould material of the present invention, the synthetic fine powder material of top grade that hardness is big, its effect is intensity and the wear resistance that improves matrix, makes matrix and skeleton that similar or synchronous wear resistance be arranged, and guarantees mould material bulk strength and wear resistance.Because the mould material thermal shock resistance is good than sintered article relatively, thereby mould material can adopt the low relatively brown corundum fine powder of price, and not necessarily adopts the high silicon carbide of valency.Mould material of the present invention is because of containing Al in the wedding agent cement
2O
3Therefore can add the aluminium micro mist no longer separately, and it is just passable only need to add silicon powder, space between the silicon powder filler particles, in use Yin Jiawen at first melts the parcel macrobead, strengthen sintering strength, reduce void content, improve intensity and wear-resistant, silicon powder and pure calcium aluminate cement are along with the raising of hydration process and curing temperature simultaneously, can obtain higher medium temperature intensity, and in high temperature barbecue, silicon powder can also with the Al in the cement
2O
3Reaction generates network-like mullite, and the stability that particle is interconnected strengthens greatly, has reduced the form of pore quantity and existence; In addition, silicon powder can also make mould material obtain construction flowability preferably.Silicon powder in the mould material of the present invention is excellent with active micro silicon powder equally, can be at a lower temperature just with cement in Al
2O
3Generate mullite, this is favourable to improving early strength, makes mould material that higher intensity (baked strength can reach 106Mpa) just can be arranged when the low temperature baker, can satisfy low temperature and test wear-resisting requirement as the reinforced fluidisation of 450 ℃ of baker cold conditions.Can also add in the mould material of the present invention on a small quantity as 0.1-0.4% by water reducer and dispersion agent such as tripoly phosphate sodium STPP compound additive, not only can reduce the amount of water in the construction process, void content is reduced, densification is improved, thereby also increased the intensity and the wear resistance of mould material, and can keep good mobility in the construction process again.In addition, the present invention also can add the 1-3% steel fiber, helps improving the globality of mould material, thereby improves casting material strength and wear resistance.For preventing that effectively mould material is when toasting, water evaporates expands and causes the explosion slump, also can add the organic fibre such as the styroflex of the burnt mistake of 0.01-0.05% in the mould material of the present invention, make low temperature as less than 200 ℃ when baking fiber burn and lose, form countless fine strip passages, discharge in order to the internal moisture evaporation.
Refractory materials of the present invention, owing to adopt relatively large (60-80%) relative low price, and the fine and close relative revolution klining alumina big than the conventional aluminium alumina with hardness and volume density, being aided with the high-grade material of an amount of silicon carbide or brown corundum synthetic (is high fever alumina amount, low synthetic material), and introducing silicon, the aluminium micro mist, generation is in conjunction with the mullite phase, better solved the low and big deficiency of voidage of bonding strength between fire resisting material particle, coordination has solved to improving the refractory materials wear resistance, feed particles hardness, relations such as intergranular bonding strength and space, make refractory materials of the present invention have higher-strength and good resistance to abrasion, may instead be fully and obtain high strength and excellent wear, the essential more expensive synthetic material of relatively large price that adopts, thereby refractory materials cost of the present invention is reduced greatly, about 20-40% can reduce cost, and performance such as normal temperature compressive strength, wear resistance, thermal shock resistance, can satisfy circular fluid bed fully, especially the harsh wear-resisting service requirements of large circulating fluidized bed boiler, the experience wear washout test, refractory materials of the present invention can adapt to the above large-scale fluidized bed boiler of 440 tons/h, the requirement of overhaul in 2 years fully.Refractory brick of the present invention can improve intensity, wear resistance and the thermal shock resistance of sintered article simultaneously by introducing silicon, aluminium micro mist and a spot of silicon carbide, and suitable mechanical pressing, industrialized mass, production efficiency height; Mould material of the present invention is by adding silicon powder and brown corundum fine powder, can make mould material early strength and burning back intensity all big, coarse aggregate and matrix grinding abrasion are synchronous, abrasion resistance is good, at low temperature as 450 ℃ of baker stages, what can obtain is higher as 106Mpa intensity, can satisfy fluidized-bed combustion boiler low temperature baker and ventilation extra bed materials flow test to the wear resistance requirement, has adapted to the needs that the boiler engineering construction hockets; Add organic fibre and steel fiber, crack when not only effectively having prevented the mould material baking, but also can strengthen bulk strength.Refractory brick of the present invention and mould material technical indicator can reach respectively:
Refractory brick
Volume density (g/cm
3)-------------------------2.61
Apparent porosity (%)----------------------------16
Cold crushing strength (Mpa)-----------------------120
Reheating linear change rate on reheating (%) [1000 ℃ * 3h]-----------+0.0
Wear resistance (cm
3) [1000 ℃ * 3h]-----------------5.5
Thermal shock resistance (inferior) [1000 ℃ of water-cooleds]--------------＞20
Mould material
Oven dry apparent porosity (%) [110 ℃ * 24h]------------16.36
Oven dry volume density (g/cm
3) [110 ℃ * 24h]---------2.68
Oven dry compressive strength (Mpa) [110 ℃ * 24h]-----------106
Burn back compressive strength (Mpa) [1000 ℃ * 3h]-----------140
Oven dry folding strength (Mpa) [110 ℃ * 24h]-----------14
Burn back folding strength (Mpa) [1000 ℃ * 3h]-----------25
Burn line velocity of variation (%) [1000 ℃ * 3h]------------0.1, back
Wear resistance (cm
3) [1000 ℃ * 3h]-----------------4.28
Refractory materials of the present invention, overcome that common alumine density is poor, hardness is low, do not reach the deficiency of service requirements, and the high-grade refractory materials of employing more amount, cause cost to increase, the defective that is difficult to promote is a circular fluid bed, particularly the above large-scale fluidized bed boiler ideal refractory materials of 440 tons/h.
Below in conjunction with several specific embodiments, further specify the present invention.
Embodiment
Embodiment: referring to the subordinate list Example formulations.
Refractory brick, proportioning is fully mixed with each refractory raw material and wedding agent by implementing, and through 300 tons of press-moldings, burns till under 1350 ℃.
Mould material, proportioning is fully mixed with each refractory raw material and wedding agent by implementing, and site operation adds water stirring, casting.
Embodiment result shows, serves as main antiwear refractory brick of preparing burden, the cold crushing strength of abrasion-proof and refractory pouring material to burn alumina, wear resistance, and several important performance indexes of thermal shock resistance all meet or exceed the similar products at home and abroad index request.
Refractory brick Example formulations table of the present invention
| Refractory brick embodiment example | ????1 | ????2 | ????3 |
| Burn alumina 3～1mm | ????15％ | ????25％ | ????35％ |
| Burn alumina 1～0mm | ????20％ | ????25％ | ????25％ |
| Silicon carbide 3～1mm | ????25％ | ????15％ | ????10％ |
| Burn the alumina fine powder | ????28％ | ????22％ | ????17％ |
| Silicon, aluminium micro mist | ????7％ | ????8％ | ????5％ |
| Well as clay fines | ????5％ | ????5％ | ????8％ |
| Aluminum phosphate (adding) | ????5％ | ????5％ | ????5％ |
Antiwear refractory brick of the present invention and similar products at home and abroad index are relatively
| Manufacturer | U.S. company | ※ China metallurgy industry standard | Embodiment | ||||
| Project | The key position brick | Wash away the district and use brick | ??NMZ ??-I | ??NMZ ??-II | ??1 | ??2 | ??3 |
| Volume density (g/cm 3) | 2.16～2.32 | ????2.82～2.96 | ??＞2.6 | ??＞2.7 | ??2.61 | ??2.60 | ??2.63 |
| Reheating linear change rate on reheating (after 1093 ℃ of burnings) | ±0.05 | ????±0.05 | ??±0.2 | ??0.2 | ??+0.01 | ??-0.03 | ??+0.02 |
| Apparent porosity (%) | ＜12 | ????＜12 | ??＜20 | ??＜19 | ??15.68 | ??15.83 | ??16.32 |
| Thermal expansivity * 10 6/℃ -1 | 4.5 | ????4.5 | |||||
| Cold crushing strength (Mpa) | ＞49 | ????＞105 | ??＞90 | ??＞100 | ??115 | ??127 | ??135 |
| Abrasion loss (cm 3) | ＜12.0 | ????＜6.0 | ??＜9 | ??＜7 | ??5.4 | ??5.3 | ??5.7 |
| 1000 ℃ of water-cooleds of thermal shock resistance (inferior) | ????≥18 | ??＞20 | ??＞20 | ??＞20 | |||
Annotate: ※ is ferrous metallurgy industry exposure draft " circular fluid bed antiwear refractory brick standard " in 1999
Refractory castable Example formulations table of the present invention
| Refractory castable embodiment | ????1# | ????2# | ????3# |
| Burn alumina 8～1mm | ????26％ | ????30％ | ????35％ |
| Burn alumina 1～0mm | ????20％ | ????20％ | ????25％ |
| Burn alumina fine powder 3～1mm | ????15％ | ????20％ | ????15％ |
| The palm fibre corundum fine powder | ????25％ | ????15％ | ????10％ |
| Silicon powder | ????8％ | ????8％ | ????7％ |
| Pure calcium aluminate cement | ????6％ | ????7％ | ????8％ |
| Steel fiber (adding) | ????2％ | ????2％ | ????2％ |
| Recombiner (adding) | ????0.2％ | ????0.3％ | ????0.3％ |
| Burn and lose fiber (adding) | ????0.02％ | ????0.01％ | ????0.02％ |
Recombiner: form by water reducer and dispersion agent such as tripoly phosphate sodium STPP.
Refractory castable of the present invention and similar products at home and abroad index are relatively
| Manufacturer | U.S. A company | U.S. B company | ※ China metallurgy industry standard | The present invention | |||||
| Project | Low-cement refractory pouring material | Low-cement refractory pouring material | Refractory castable | Refractory castable | NMJ-II | ??NMJ- ??III | ??1# | ??2# | ??3# |
| After 100 ℃ of back 1100 ℃ of burnings of burning of compressive strength (Mpa) | ? ? ? ＞64 | ? ? ? ??＞84 | ? ? ? 70 | ? ? ? 80 | ? ? ＞65 ＞80 | ? ? ??70 ??＞85 | ? ? ??103 ??138 | ? ? ??110 ??145 | ? ? ??117 ??137 |
| After 100 ℃ of back 1100 ℃ of burnings of burning of anti-folding (MPa) | ＞8 ＞10 | ??＞9 ??＞10 | ??14 ??24 | ??15 ??27 | ??13 ??24 | ||||
| Burn back line velocity of variation (%) | ＞-0.3 | ??＞-0.3 | ＜±1 | ??＜±1 | ??-0.2 | ??-0.2 | ??+0.1 | ||
| 1000 ℃ of water-cooleds (inferior) are stablized in thermal shock | ＞20 | ??＞20 | |||||||
| Abrasion loss (cm 3) | 10.0 | ??＜7.0 | ＜10.0 | ??＜8.0 | ??4.27 | ??4.26 | ??4.31 | ||
| Apparent porosity (%) | ??16.32 | ??15.91 | ??16.14 | ||||||
| Volume density (g/cm 3) | ??2.8 | ＞2.6 | ??＞2.7 | ??2.65 | ??2.70 | ??2.69 | |||
Annotate: ※ is ferrous metallurgy industry exposure draft " circular fluid bed antiwear refractory brick standard " in 1999
Claims (12)
1, refractory material for circulating fluidized bed boiler is characterized in that consisting of the burning alumina of 55-80% (weight, down with), the silicon carbide of 10-25% or brown corundum, 5-10% silicon, aluminium micro mist or silicon powder, the wedding agent of 5-10%.
2,, it is characterized in that consisting of the burning alumina of 60-70%, the silicon carbide of 15-20% or brown corundum, 5-10% silicon, aluminium micro mist or silicon powder, the wedding agent of 5-10% according to the described refractory material for circulating fluidized bed boiler of claim 1.
3, according to the described refractory material for circulating fluidized bed boiler of claim 1, it is characterized in that burning alumina in the sintered article is 60-80%, burning alumina in the mould material is 60-70%.
4, according to the described refractory material for circulating fluidized bed boiler of claim 1, it is characterized in that the 50-85% of said burning alumina makes the skeleton material, 15-50% makes fine powder matrix material.
5, according to claim 1,2,3 or 4 described refractory material for circulating fluidized bed boiler, it is characterized in that said fire-resistant sintered article burns the alumina aggregate by 35-65%, the 10-25% carborundum aggregate, 10-35% burns alumina fine powder matrix material, 5-10% silicon, aluminium micro mist, 4-8% clay wedding agent is formed.
6,, it is characterized in that said silicon powder is an active micro silicon powder according to the described refractory material for circulating fluidized bed boiler of claim 5.
7,, it is characterized in that the outer aluminum phosphate wedding agent that is added with 3-6% according to the described refractory material for circulating fluidized bed boiler of claim 5.
8, according to claim 1,2,3 or 4 described refractory material for circulating fluidized bed boiler, it is characterized in that said refractory castable burns the alumina aggregate by 45-70%, 10-25% palm fibre corundum fine powder matrix material, 10-25% burns alumina fine powder matrix material, the 5-10% silicon powder, 4-8% pure calcium aluminate cement wedding agent is formed.
9, described according to Claim 8 refractory material for circulating fluidized bed boiler is characterized in that said silicon powder is an active micro silicon powder.
10, described according to Claim 8 refractory material for circulating fluidized bed boiler is characterized in that adding the compound additive of being made up of water reducer and dispersion agent of 0.1-0.4%.
11, described according to Claim 8 refractory material for circulating fluidized bed boiler is characterized in that also adding the 1-3% steel fiber.
12, described according to Claim 8 refractory material for circulating fluidized bed boiler, it is characterized in that also adding 0.01-0.05% has machine burning to lose fiber.
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|---|---|---|---|
| CN 03131557 CN1458123A (en) | 2003-05-21 | 2003-05-21 | Refractory material for circular fluidized bed boiler |
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|---|---|---|---|
| CN 03131557 CN1458123A (en) | 2003-05-21 | 2003-05-21 | Refractory material for circular fluidized bed boiler |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805198A (en) * | 2010-04-29 | 2010-08-18 | 巩义市科恒耐火材料有限公司 | Mullite steel fiber castable |
| CN102464495A (en) * | 2010-11-04 | 2012-05-23 | 宜兴市中环耐火材料有限公司 | Antiseptic refractory material for furnace wall pin protective sleeve and production method thereof |
| CN103951444A (en) * | 2014-04-15 | 2014-07-30 | 邹平耀华特耐科技有限公司 | High-thermal-shock-resistance coating for wind chamber of circulating fluidized bed boiler (CFBB) and production process of coating |
| CN106380213A (en) * | 2016-08-31 | 2017-02-08 | 浙江盛旺耐火材料股份有限公司 | Circulation boiler dedicated castable material |
| CN107010932A (en) * | 2017-05-09 | 2017-08-04 | 郑州耐都热陶瓷有限公司 | High temperature liner body skin patching material |
| CN107010972A (en) * | 2017-05-09 | 2017-08-04 | 郑州耐都热陶瓷有限公司 | High-temperature wearable mud |
| CN107140955A (en) * | 2017-05-22 | 2017-09-08 | 攀钢冶金材料有限责任公司 | A kind of refractory brick and preparation method thereof |
| CN108439963A (en) * | 2018-05-24 | 2018-08-24 | 武汉科技大学 | A kind of circulating fluidized bed boiler water-cooling wall castable and preparation method thereof |
| CN108531199A (en) * | 2018-03-27 | 2018-09-14 | 五冶集团上海有限公司 | A kind of lining plate structure of coke tank straight tube root and burnt tank lower cone coke discharging mouth |
| CN109534833A (en) * | 2018-12-28 | 2019-03-29 | 瑞泰科技股份有限公司 | A kind of transition band of cement kiln and clinkering zone engaging portion mullite corundum silicon carbide brick |
| CN111763091A (en) * | 2020-06-17 | 2020-10-13 | 林国强 | High-thermal-shock wear-resistant coating and preparation method thereof |
| CN112624689A (en) * | 2020-12-17 | 2021-04-09 | 长兴南冶冶金材料有限公司 | Blast furnace ore tank wear-resistant material and manufacturing method thereof |
| CN115724651A (en) * | 2022-11-23 | 2023-03-03 | 贵州炜达新材料有限公司 | Preparation method of high-temperature-resistant and high-strength kiln wall |
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2003
- 2003-05-21 CN CN 03131557 patent/CN1458123A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805198A (en) * | 2010-04-29 | 2010-08-18 | 巩义市科恒耐火材料有限公司 | Mullite steel fiber castable |
| CN101805198B (en) * | 2010-04-29 | 2011-07-06 | 巩义市科恒耐火材料有限公司 | Mullite steel fiber castable |
| CN102464495A (en) * | 2010-11-04 | 2012-05-23 | 宜兴市中环耐火材料有限公司 | Antiseptic refractory material for furnace wall pin protective sleeve and production method thereof |
| CN103951444A (en) * | 2014-04-15 | 2014-07-30 | 邹平耀华特耐科技有限公司 | High-thermal-shock-resistance coating for wind chamber of circulating fluidized bed boiler (CFBB) and production process of coating |
| CN103951444B (en) * | 2014-04-15 | 2015-09-23 | 邹平耀华特耐科技有限公司 | CFB Boiler room high-heat resistance shock resistant coating and production technique thereof |
| CN106380213A (en) * | 2016-08-31 | 2017-02-08 | 浙江盛旺耐火材料股份有限公司 | Circulation boiler dedicated castable material |
| CN107010932A (en) * | 2017-05-09 | 2017-08-04 | 郑州耐都热陶瓷有限公司 | High temperature liner body skin patching material |
| CN107010972A (en) * | 2017-05-09 | 2017-08-04 | 郑州耐都热陶瓷有限公司 | High-temperature wearable mud |
| CN107140955A (en) * | 2017-05-22 | 2017-09-08 | 攀钢冶金材料有限责任公司 | A kind of refractory brick and preparation method thereof |
| CN108531199A (en) * | 2018-03-27 | 2018-09-14 | 五冶集团上海有限公司 | A kind of lining plate structure of coke tank straight tube root and burnt tank lower cone coke discharging mouth |
| CN108531199B (en) * | 2018-03-27 | 2020-09-11 | 五冶集团上海有限公司 | Lining plate structure for coke discharge port of coke pot straight cylinder root and coke pot lower cone |
| CN108439963A (en) * | 2018-05-24 | 2018-08-24 | 武汉科技大学 | A kind of circulating fluidized bed boiler water-cooling wall castable and preparation method thereof |
| CN108439963B (en) * | 2018-05-24 | 2020-10-13 | 武汉科技大学 | Circulating fluidized bed boiler water-cooled wall castable and preparation method thereof |
| CN109534833A (en) * | 2018-12-28 | 2019-03-29 | 瑞泰科技股份有限公司 | A kind of transition band of cement kiln and clinkering zone engaging portion mullite corundum silicon carbide brick |
| CN111763091A (en) * | 2020-06-17 | 2020-10-13 | 林国强 | High-thermal-shock wear-resistant coating and preparation method thereof |
| CN112624689A (en) * | 2020-12-17 | 2021-04-09 | 长兴南冶冶金材料有限公司 | Blast furnace ore tank wear-resistant material and manufacturing method thereof |
| CN115724651A (en) * | 2022-11-23 | 2023-03-03 | 贵州炜达新材料有限公司 | Preparation method of high-temperature-resistant and high-strength kiln wall |
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