CN100351209C - Refractory pouring material used for melten iron desulfur agitator - Google Patents

Refractory pouring material used for melten iron desulfur agitator Download PDF

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CN100351209C
CN100351209C CN 200510019721 CN200510019721A CN100351209C CN 100351209 C CN100351209 C CN 100351209C CN 200510019721 CN200510019721 CN 200510019721 CN 200510019721 A CN200510019721 A CN 200510019721A CN 100351209 C CN100351209 C CN 100351209C
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castable
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refractory
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CN1785908A (en
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欧阳德刚
胡清明
罗安智
李具中
胡铁山
刘守堂
陈双全
张爱平
王海青
周明石
朱善合
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武汉钢铁(集团)公司
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Abstract

本发明公开了一种铁水脱硫搅拌器用耐火浇注料,它由浇注料基料和适量的添加剂混合而成。 The present invention discloses a hot metal desulfurization stirrer castable refractory, castable it by mixing binder and the amount of additive is made. 浇注料基料按重量配比由55~65%的普通电熔莫来石、3~10%的焦宝石、3~7%的蓝晶石、7~15%的特级高铝、3~6%的硅微粉、5~10%的α-Al Castable binder ratio by weight mullite, from 55 to 65% of normal fused, 3 to 10% flint, 3 to 7% kyanite, 7 to 15% of alumina grade 3-6 % silica powder, 5 to 10% α-Al

Description

铁水脱硫搅拌器用耐火浇注料 Desulphurization with a stirrer castable

技术领域 FIELD

本发明属于转炉炼钢前铁水脱硫预处理用耐火材料领域,具体地说涉及一种铁水脱硫搅拌器用耐火浇注料。 The present invention is in the steelmaking art prior to hot metal desulfurization pretreatment refractories, particularly to a desulphurization with a stirrer refractory castable.

背景技术 Background technique

目前,国内外冶金企业在转炉炼钢前进行铁水炉外搅拌脱硫时,所使用的脱硫搅拌器主要是由内部金属芯杆和外部耐火材料衬体构成的,其中搅拌器衬体所用耐火材料大多是高纯莫来石质耐火浇注料。 At present, domestic and international metallurgical enterprises while stirring the furnace hot metal desulfurization, the desulfurization stirrer was used mainly by the inner metallic core rod and an outer body made of refractory lining before the converter steelmaking, wherein the agitator body is lined with refractory material mostly high-purity mullite refractory castable.

以武汉钢铁(集团)公司第二炼钢厂所使用的KR铁水脱硫搅拌器为例,从该搅拌器的制作规程可知其所选用耐火浇注料的主要原料为高纯电熔莫来石,其主要成份按重量百分比Al2O3≥60%、SiO2约为30~35%。 KR blender with hot metal desulfurization Wuhan Iron and Steel (Group) Company second steel mill used, for example, can be seen from the production procedure of the agitator their choice refractory castable main raw material for high purity fused mullite, its The main ingredient in weight percent Al2O3≥60%, SiO2 of about 30-35%. 其理化性能:抗压强度(110℃×24h)≥24Mpa,抗压强度(1500℃×3h)≥60Mpa;体积密度(110℃×24h)≥2.6g/cm3,体积密度(1500℃×3h)≥2.5g/cm3;烧后线变化(1500℃×3h)为±0.5%。 Its physical and chemical properties: compressive strength (110 ℃ × 24h) ≥24Mpa, compressive strength (1500 ℃ × 3h) ≥60Mpa; bulk density (110 ℃ × 24h) ≥2.6g / cm3, a bulk density (1500 ℃ × 3h) ≥2.5g / cm3; Linear change (1500 ℃ × 3h) was ± 0.5%.

通过对上述KR铁水搅拌脱硫过程的现场调研和该搅拌器耐火材料衬体破损状况的考察,发现该搅拌器破损的主要形式是冲蚀、开裂、热震裂纹和热剥落等,一方面说明现有高纯电熔莫来石耐火浇注料在搅拌器实际使用温度条件下不能进行良好的烧结,致使衬体组织疏松、结合强度偏低、熔渣渗透引起结构剥落。 By examining the above-described process KR desulfurizing molten iron was stirred for site survey and condition of the damaged refractory lining agitator body, the agitator was found primarily in the form of a broken erosion, cracking, thermal shock cracking and spalling heat, will now be explained on the one hand It is of high purity fused mullite refractory castable can not be actually used in a stirrer good sintering temperature condition, resulting in loose tissue lining of the body, low binding strength, slag penetration cause structural spalling. 另一方面高纯电熔莫来石浇注料的热震稳定性较差,烧后线变化性能不尽合理,也会导致搅拌器的耐火材料衬体热剥落、以及衬体和搅拌器金属芯之间结合不紧密等毁损现象,从而大幅缩短了铁水脱硫搅拌器的使用寿命。 Poor hand high purity fused mullite castable thermal shock resistance properties Linear change is not reasonable, the refractory lining of the body will lead to peeling a hot stirrer, and the filling body and the metal core stirrer not close bond between the phenomenon and other damage to significantly shorten the life of hot metal desulphurization stirrer. 统计数据表明:武汉钢铁(集团)公司第二炼钢厂KR脱硫搅拌器目前的平均使用寿命仅为350~450次,最高的使用寿命为505次;上海钢铁三厂KR脱硫搅拌器的平均使用寿命小于200次;川威钢铁厂KR脱硫搅拌器的平均使用寿命仅为350次左右。 Statistics show: Wuhan Iron and Steel (Group) Company second steel plant desulfurization KR blender current average life of only 350 to 450 times the maximum service life is 505 times; use an average of Shanghai Steel Factory KR desulfurization stirrer life of less than 200; the average life Chuanwei steel plant desulfurization KR blender is only about 350 times.

同时,高纯电熔莫来石原材料的采用,还大大增加了铁水脱硫搅拌器用耐火浇注料的制作成本。 At the same time, high purity fused mullite raw materials employed, the production cost is also greatly increased the desulphurization of castable refractory with a stirrer. 与铁水喷吹脱硫枪相比,铁水脱硫搅拌器的使用寿命远高于铁水喷吹脱硫枪的使用寿命,但搅拌脱硫在国内的推广应用程度远不及喷吹脱硫,其制作成本和使用成本太高也是一个重要的原因。 Compared with the blowing of hot metal desulphurization gun, the service life of hot metal desulphurization agitator is much higher than blowing hot metal desulphurization gun life, but stirring desulfurization in the country to promote the application degree far and blowing desulfurization, its production costs and cost too It is also an important reason for the high. 这些不利因素导致国内铁水脱硫搅拌器用耐火浇注料的研究工作未得到应有的重视,从而限制了其使用寿命的进一步提高。 These negative factors cause domestic hot metal desulphurization stirrer refractory castable research work has not been given due attention, thus limiting further improve its service life.

发明内容 SUMMARY

本发明的目的在于改进现有技术中的不足,提供一种原材料来源广泛、成本低廉、性能优良的铁水脱硫搅拌器用耐火浇注料,该耐火浇注料在不改变搅拌器结构与使用状况的条件下,可使KR脱硫搅拌器的平均使用寿命提高100次以上。 The object of the present invention to improve the disadvantages of the prior art, to provide a wide variety of sources of raw materials, low cost, high performance stirrer desulphurization castable refractory, the refractory castable without changing the agitator and usage conditions enables KR desulfurization stirrer average service life increased by more than 100 times.

为达到上述目的,本发明根据铁水KR搅拌脱硫预处理的工艺过程和搅拌器的结构特点,设计了一种铁水脱硫搅拌器用耐火浇注料,它由浇注料基料和适量的添加剂混合而成。 To achieve the above object, according to the present invention, molten iron was stirred KR desulfurization process and the structural characteristics of pre-stirrer, a stirrer designed a desulphurization castable refractory, castable it by mixing binder and the amount of additive is made. 所述浇注料基料按重量配比由55~65%的普通电熔莫来石、3~10%的焦宝石、3~7%的蓝晶石、7~15%的特级高铝、3~6%的硅微粉、5~10%的α-Al2O3微粉、3~10%的纯铝酸钙水泥、1.5~2.5%的致密刚玉细粉构成。 The castable binder ratio by weight from 55 to 65% of normal fused mullite, 3 to 10% flint, 3 to 7% kyanite, 7 to 15% of grade alumina, 3 to 6% of silica powder, 5 to 10% α-Al2O3 powder, 3 to 10% calcium aluminate cement, 1.5 to 2.5% of fine powder constituting the dense corundum. 所述添加剂以所述浇注料基料的总重量为计量基准,由1.5~2.5%的耐热钢纤维、≤0.5%的乳酸铝和/或≤0.5%金属铝粉、≤0.3%的三聚磷酸钠和/或≤0.5%的三聚氰胺构成。 The additive of the total weight of the base material is castable baseline measurement, from 1.5 to 2.5% of heat-resistant steel fibers, ≤0.5% of aluminum lactate and / or ≤0.5% aluminum metal powder, ≤0.3% of the trimer sodium and / or ≤0.5% melamine configuration. 上述所有的组份均为市面上可以购买获得的原材料。 All of the above components are commercially available raw materials can be purchased.

上述浇注料基料较佳的重量配比为:56~60%的普通电熔莫来石、5~8%的焦宝石、4~6%的蓝晶石、9~13%的特级高铝、4~5%的硅微粉、6~8%的α-Al2O3微粉、5~8%的纯铝酸钙水泥、2~2.5%的致密刚玉细粉。 Above castable binder weight ratio is preferred: 56 to 60% of normal fused mullite, 5 to 8% flint, 4 to 6% kyanite, 9 to 13% of grade alumina , 4-5% microsilica, 6-8% of α-Al2O3 powder, 5 to 8% of calcium aluminate cement, 2 to 2.5% of dense corundum powder. 上述添加剂以上述浇注料基料的总重量为计量基准,其较佳的重量配比为:2~2.5%的耐热钢纤维、≤0.5%的乳酸铝和/或≤0.5%金属铝粉、≤0.15%的三聚磷酸钠和/或≤0.5%的三聚氰胺。 In the above-described additives castable total weight of said base material is a baseline measurement, which is preferred weight ratio: 2 to 2.5% of heat-resistant steel fibers, ≤0.5% of aluminum lactate and / or ≤0.5% aluminum metal powder, ≤0.15% of sodium tripolyphosphate and / or ≤0.5% of melamine.

进一步地,上述浇注料基料优选的粒度级配为:普通电熔莫来石的粒度为0.1~8毫米,焦宝石的粒度为0.1~1毫米,蓝晶石的粒度为150目,特级高铝是粒度为180目和325目的两种颗粒的混合物,致密刚玉细粉的粒度为325目。 Further, the binder preferably castable particle classification as: Common fused mullite particle size of 0.1 to 8 mm, flint size is 0.1 to 1 mm, a particle size of 150 mesh kyanite, super high aluminum is a mixture of a particle size of 180 and 325 mesh particles of two kinds, dense corundum powder particle size of 325 mesh.

更进一步地,上述粒度为0.1~8毫米的普通电熔莫来石中,粒度在8~5毫米范围内的占38~42%、粒度在5~3毫米范围内的占36~40%、粒度在3~1毫米范围内的占5~8%、粒度在1~0.1毫米范围内的占12~17%。 Still further, the above-described particle size of 0.1 to 8 mm fused mullite general, the particle size accounts for 38 to 42% in the range of 8 to 5 mm particle size accounts for 36% to 40% in 5 to 3 millimeters, particle size from 5 to 8% in the range of 3 to 1 mm particle size accounts for 12% to 17% in the range of 1 to 0.1 mm. 上述特级高铝中,粒度为180目的颗粒占40~60%,粒度为325目的颗粒占60~40%。 Above grade alumina, the particle size of 40 to 180 mesh particle 60% particle size of 325 mesh particles comprise from 60 to 40%.

本发明从改善铁水脱硫搅拌器使用温度条件下耐火浇注料的烧结状况、热震稳定性、施工性能、使用性能、以及调整耐火浇注料烧后线变化率等角度出发,并充分考虑原料的来源与性价比,选择普通电熔莫来石、焦宝石为耐火浇注料的骨料原料,不仅改善了脱硫搅拌器浇注料的烧结状况,而且可以将其作为脱硫喷枪浇注料,改善其在喷吹脱硫条件下的烧结状况,同时有效降低了耐火浇注料的制作成本。 Availability of the present invention is sintered at a temperature of from refractory castable improve desulphurization stirrer, thermal shock resistance, workability, performance, and adjusting castable Linear change rate perspective, with due consideration of the source of raw materials and price, select normal fused mullite, flint castable refractory aggregate material, not only to improve the sintering conditions desulfurization stirrer castable castable and can be used as desulfurization lance, which improve injection desulfurization sintering condition under conditions while effectively reducing the manufacturing cost of the refractory castable. 为了进一步完善耐火浇注料的施工性能与使用性能,在浇注料基料中另外增加适量的添加剂,包括有增强剂、膨胀剂、减水剂和防爆剂,具体地设计耐热钢纤维为浇注料基料的增强剂,蓝晶石为膨胀剂,三聚磷酸钠和/或三聚氰胺为减水剂,金属铝粉和/或乳酸铝为防爆剂。 In order to further improve the performance and application properties of the refractory castable, an additional amount of castable binder additives, including reinforcing agents, bulking agents, water reducing agents and explosion protection, specifically designed for the heat-resisting steel fiber castable enhancers binder, kyanite as bulking agents, sodium tripolyphosphate and / or melamine as the reducing agent, aluminum metal powder and / or aluminum lactate as explosion protection. 根据耐火浇注料原料致密堆积的原则,结合具体实验,探索出了耐火浇注料的最佳骨料颗粒级配与粉料级配。 The principle refractory castable material is densely packed, the specific binding experiments explored the best refractory castable powder aggregate particle size distribution and gradation.

归纳起来,本发明的铁水脱硫搅拌器用耐火浇注料具有如下优点:其一,本发明的耐火浇注料根据铁水搅拌脱硫的工艺过程和搅拌器本身的结构特点,选择价格低廉、来源广泛的普通电熔莫来石与焦宝石为主要原料,且本发明所用原材料均为市售商品,大幅度降低了耐火浇注料的生产成本。 To sum up, the present invention is a stirrer hot metal desulfurization refractory castable having the following advantages: First, the refractory castable according to the present invention the structural characteristics according to general electric stirring desulfurization of molten iron and a stirrer process itself choose inexpensive, widely available in fused mullite and flint clay as raw materials, and the present invention are commercially available raw materials, a significant reduction in the production cost refractory castable.

其二,本发明的耐火浇注料在铁水搅拌脱硫的使用条件下烧结状况优良,结合强度高。 Second, castable refractory of the present invention is excellent in sintering condition under stirring hot metal desulfurization conditions of use, a high bonding strength. 本发明通过选择烧结温度较低的普通电熔莫来石与焦宝石为骨料,有效改善了骨料与粉料之间的烧结状况,提高了使用条件下搅拌器耐火材料衬体的密实度和抗熔渣渗透能力。 The present invention, by selecting a lower sintering temperature and ordinary fused mullite aggregate of flint, improve the sintering conditions between the powder and aggregate to improve density refractory lining body with a stirrer under the conditions of use and anti-slag penetration.

其三,本发明的耐火浇注料通过浇注料基料的合理选择和添加剂中增强剂、减水剂、防爆剂等的合理组配,使耐火浇注料具有良好的施工性能和优良的使用性能。 Third, the refractory castables according to the present invention by properly selecting the binder and the additive material in the casting enhancers, superplasticizer, explosion or the like group with reasonable, the refractory castable having good workability and excellent performance.

其四,采用本发明的耐火浇注料生产的KR脱硫搅拌器性能优良、成本低廉,试验证明在不调整搅拌器结构和其它生产与应用条件的情况下,其平均使用寿命可在原基础上提高100次以上。 Fourth, the use of the refractory material of the present invention produced excellent casting stirrer KR desulfurization performance, low cost, test proved without adjustment agitator and other production and application conditions, the average life can be increased based on the original 100 more times.

具体实施方式 Detailed ways

以下结合具体实施例对本发明的铁水脱硫搅拌器用耐火浇注料作进一步的详细描述:实施例1:制备103.15公斤本发明的铁水脱硫搅拌器用耐火浇注料,其中:浇注料基料总重量为100公斤,添加剂总重量为3.15公斤。 The following with reference to specific embodiments desulphurization agitator according to the present invention refractory castable will be further described in detail: Example 1: Preparation of 103.15 kg desulphurization of the present invention, a stirrer with refractory castable, wherein: the total weight of the castable base 100 kg additive total weight of 3.15 kg. 上述浇注料基料按重量配比由56公斤普通电熔莫来石、8.5公斤焦宝石、5公斤蓝晶石、10公斤特级高铝、4公斤硅微粉、8公斤α-Al2O3微粉、6公斤纯铝酸钙水泥、2.5公斤致密刚玉细粉构成。 Above castable binder ratio by weight of 56 kg ordinary fused mullite, flint 8.5 kg, kyanite 5 kg, 10 kg grade alumina, silica powder 4 kg, α-Al2O3 powder 8 kg, 6 kg pure calcium aluminate cement, 2.5 kg corundum powder compact configuration. 上述添加剂以100公斤浇注料基料为计量基准,由2公斤耐热钢纤维、0.5公斤乳酸铝、0.15公斤三聚磷酸钠、0.5公斤三聚氰胺构成。 Above 100 kg additives castable binder is a baseline measurement, the heat-resisting steel fiber 2 kg, 0.5 kg aluminum lactate, 0.15 kg sodium tripolyphosphate, 0.5 kg of melamine configuration. 上述56公斤普通电熔莫来石的粒度级配为0.1~8毫米,其中粒度在8~5毫米范围内的有22公斤、粒度在5~3毫米范围内的有22公斤、粒度在3~1毫米范围内的有4公斤、粒度在1~0.1毫米范围内的有8公斤。 Above 56 kg of common fused mullite with a particle size fraction of 0.1 to 8 mm, wherein the particle size of 22 kilograms of 8 mm to 5, with a particle size of 5 to 22 kg in the range of 3 mm, particle size 3 ~ there are four kilograms of 1 mm, with a particle size of 8 kg in the range of 1 to 0.1 mm. 上述焦宝石的粒度为0.1~1毫米。 Above flint particle size is 0.1 to 1 mm. 上述蓝晶石的粒度为150目。 Kyanite grain size is above 150 mesh. 上述10公斤特级高铝中,粒度为180目的颗粒有5公斤,325目的颗粒有5公斤。 Above 10 kg grade alumina, the particle size of 180 mesh particles have 5 kg, 325 mesh particles have 5 kg. 上述致密刚玉细粉的粒度为325目。 Dense corundum powder particle size is above 325 mesh. 将上述制备好的耐火浇注料按常规方法浇注成40mm×40mm×160mm的试验块,并与脱硫搅拌器常用浇注料进行热震稳定性对比实验,具体为1200℃水冷实验,结果表明,本发明的耐火浇注料的水冷次数比脱硫搅拌器常用浇注料高0.7~1倍,本发明的耐火浇注料成本下降约15%左右。 The above-prepared pouring castable refractory by a conventional method into test pieces of 40mm × 40mm × 160mm, and a stirrer conventional desulfurization castable thermal shock resistance comparative experiments, in particular water-cooled 1200 deg.] C experiment, the results show that the present invention the water-cooled refractory castable times than conventional castable high desulfurization stirrer 0.7 to 1 times the cost of castable refractory of the present invention decreases by about 15%.

实施例2:制备103.70公斤本发明的铁水脱硫搅拌器用耐火浇注料,其中:浇注料基料总重量为100公斤,添加剂总重量为3.70公斤。 Example 2: Preparation of 103.70 kg of the present invention desulphurization agitator refractory castable, wherein: the total weight of the castable base 100 kg, 3.70 kg of the total weight of the additive. 上述浇注料基料按重量配比由65公斤普通电熔莫来石、3公斤焦宝石、6公斤蓝晶石、12公斤特级高铝、3.5公斤硅微粉、5公斤α-Al2O3微粉、4公斤纯铝酸钙水泥、1.5公斤致密刚玉细粉构成。 Above castable binder ratio by weight of 65 kg ordinary fused mullite, flint 3 kg, 6 kg kyanite, aluminous premium 12 kg, 3.5 kg silica powder, α-Al2O3 powder 5 kg, 4 kg pure calcium aluminate cement, 1.5 kg corundum powder compact configuration. 上述添加剂100公斤浇注料基料为计量基准,由2.5公斤耐热钢纤维、0.3公斤乳酸铝、0.3公斤金属铝粉、0.2公斤三聚磷酸钠、0.4公斤三聚氰胺构成。 Above 100 kg Additives castable binder is a baseline measurement, the heat-resistant steel fibers 2.5 kg, 0.3 kg aluminum lactate, aluminum metal powder 0.3 kg, 0.2 kg of sodium tripolyphosphate, 0.4 kg of melamine configuration. 上述65公斤普通电熔莫来石的粒度级配为0.1~8毫米,其中粒度在8~5毫米范围内的有27公斤、粒度在5~3毫米范围内的有24公斤、粒度在3~1毫米范围内的有5公斤、粒度在1~0.1毫米范围内的有9公斤。 Above 65 kg of common fused mullite with a particle size fraction of 0.1 to 8 mm, wherein the particle size of 27 kilograms of 8 mm to 5, with a particle size of 5 to 24 kg in the range of 3 mm, particle size 3 ~ there are five kilograms of 1 mm, with a particle size of 9 kg in 1 to 0.1 millimeters. 上述焦宝石的粒度为0.1~1毫米。 Above flint particle size is 0.1 to 1 mm. 上述蓝晶石的粒度为150目。 Kyanite grain size is above 150 mesh. 上述12公斤特级高铝中,粒度为180目的颗粒有7.2公斤,325目的颗粒有4.8公斤。 Above 12 kg grade alumina, the particle size particle of 7.2 to 180 kg, 325 mesh particles 4.8 kg. 上述致密刚玉细粉的粒度为325目。 Dense corundum powder particle size is above 325 mesh. 将上述制备好的耐火浇注料按常规方法浇注成40mm×40mm×160mm的试验块,并与脱硫搅拌器常用浇注料进行热震稳定性对比实验,具体为1200℃水冷实验,结果与实施例1基本相同。 The above-prepared pouring castable refractory by a conventional method into test pieces of 40mm × 40mm × 160mm, and a stirrer conventional desulfurization castable thermal shock resistance comparative experiments, in particular water-cooled 1200 deg.] C experiment, the results of Example 1 basically the same.

实施例3:制备102.60公斤本发明的铁水脱硫搅拌器用耐火浇注料,其中:浇注料基料总重量为100公斤,添加剂总重量为2.60公斤。 Example 3: Preparation of 102.60 kg of the present invention desulphurization agitator refractory castable, wherein: the total weight of the castable base 100 kg, 2.60 kg of the total weight of the additive. 上述浇注料基料按重量配比由55公斤普通电熔莫来石、10公斤焦宝石、4公斤蓝晶石、8公斤特级高铝、6公斤硅微粉、7公斤α-Al2O3微粉、8公斤纯铝酸钙水泥、2公斤致密刚玉细粉构成。 Above castable binder ratio by weight of 55 kg ordinary fused mullite, flint 10 kg, 4 kg kyanite, aluminous super 8 kg, 6 kg silica powder, 7 kg α-Al2O3 powder, 8 kg pure calcium aluminate cement, 2 kg dense corundum powder constituted. 上述添加剂以100公斤浇注料基料为计量基准,由1.5公斤耐热钢纤维、0.4公斤乳酸铝、0.2公斤金属铝粉、0.5公斤三聚氰胺构成。 Above 100 kg additives castable binder is a baseline measurement, the heat resistant steel fibers 1.5 kg, 0.4 kg aluminum lactate, aluminum metal powder 0.2 kg, 0.5 kg of melamine configuration. 上述55公斤普通电熔莫来石的粒度级配为0.1~8毫米,其中粒度在8~5毫米范围内的有21公斤、粒度在5~3毫米范围内的有21公斤、粒度在3~1毫米范围内的有4公斤、粒度在1~0.1毫米范围内的有9公斤。 Above 55 kg of common fused mullite with a particle size fraction of 0.1 to 8 mm, wherein the particle size of 21 kilograms of 8 mm to 5, with a particle size of 5 to 21 kg in the range of 3 mm, particle size 3 ~ there are four kilograms of 1 mm, with a particle size of 9 kg in 1 to 0.1 millimeters. 上述焦宝石的粒度为0.1~1毫米。 Above flint particle size is 0.1 to 1 mm. 上述蓝晶石的粒度为150目。 Kyanite grain size is above 150 mesh. 上述8公斤特级高铝中,粒度为180目的颗粒有3.2公斤,325目的颗粒有4.8公斤。 Above 8 kg grade alumina, the particle size particle of 3.2 to 180 kg, 325 mesh particles 4.8 kg. 上述致密刚玉细粉的粒度为325目。 Dense corundum powder particle size is above 325 mesh. 将上述制备好的耐火浇注料按常规方法浇注成40mm×40mm×160mm的试验块,并与脱硫搅拌器常用浇注料进行热震稳定性对比实验,具体为1200℃水冷实验,结果与实施例1基本相同。 The above-prepared pouring castable refractory by a conventional method into test pieces of 40mm × 40mm × 160mm, and a stirrer conventional desulfurization castable thermal shock resistance comparative experiments, in particular water-cooled 1200 deg.] C experiment, the results of Example 1 basically the same.

实施例4:制备1031.5公斤本发明的铁水脱硫搅拌器用耐火浇注料,其中:浇注料基料总重量为1000公斤,添加剂总重量为31.5公斤。 Example 4: Preparation of 1031.5 kilograms invention desulphurization agitator refractory castable, wherein: the total weight of the castable binder is 1000 kg, the total weight of the additive was 31.5 kg. 上述浇注料基料按重量配比由600公斤普通电熔莫来石、50公斤焦宝石、50公斤蓝晶石、100公斤特级高铝、40公斤硅微粉、80公斤α-Al2O3微粉、60公斤纯铝酸钙水泥、20公斤致密刚玉细粉构成。 Above castable binder weight ratio of 600 kg of ordinary fused mullite, flint 50 kg, 50 kg kyanite, 100 kg grade alumina, silica fume 40 kg, 80 kg α-Al2O3 powder, 60 kg pure calcium aluminate cement, 20 kg of dense corundum powder composed. 上述添加剂以1000公斤浇注料基料为计量基准,由20公斤耐热钢纤维、5公斤金属铝粉、1.5公斤三聚磷酸钠、5公斤三聚氰胺构成。 Above 1000 kg additives castable binder is a baseline measurement, the heat-resistant steel fibers 20 kg, 5 kg aluminum metal powder, 1.5 kg of sodium tripolyphosphate, 5 kg of melamine configuration. 上述600公斤普通电熔莫来石的粒度级配为0.1~8毫米,其中粒度在8~5毫米范围内的有240公斤、粒度在5~3毫米范围内的有230公斤、粒度在3~1毫米范围内的有40公斤、粒度在1~0.1毫米范围内的有90公斤。 Above 600 kg of common fused mullite with a particle size fraction of 0.1 to 8 mm, with a particle size of 8 to 240 kg in the range of 5 mm, with a particle size of 5 to 230 kg in the range of 3 mm, particle size 3 ~ there 40 kg of 1 mm, with a particle size of 90 kg in the range of 1 to 0.1 mm. 上述焦宝石的粒度为0.1~1毫米。 Above flint particle size is 0.1 to 1 mm. 上述蓝晶石的粒度为150目。 Kyanite grain size is above 150 mesh. 上述100公斤特级高铝中,粒度为180目的颗粒有50公斤,325目的颗粒有50公斤。 Above 100 kg grade alumina, the particle size of 180 mesh particles 50 kilograms, 50 kilograms 325 mesh particles. 上述致密刚玉细粉的粒度为325目。 Dense corundum powder particle size is above 325 mesh. 按上述配比重复操作数次,获得足够制备多支脱硫搅拌器的耐火浇注料,将其送到武汉钢铁(集团)公司第二炼钢厂KR脱硫搅拌器制作现场,按照搅拌器制作工艺制度,完成了数支工业性试验用搅拌器的制作。 Ratio operation is repeated several times as described above, to obtain sufficient fire-resistant multi-branching prepared castable desulfurization stirrer, which was sent to the Wuhan Iron and Steel (Group) Company second steel mill production site KR desulfurizing a stirrer, a stirrer in accordance with the production process system , completed the production of industrial test count with a stirrer. 通过工业性试验,取得了搅拌器平均使用寿命为668次的优良效果,远高于同期实际生产用搅拌器平均400~450次的使用寿命。 By industrial test, the stirrer was made 668 times the average life of an excellent effect, much higher than the actual production period with a stirrer 400 to 450 times the average life.

本发明的耐火浇注料,非常适用于急冷急热工况条件下热工设备和热构件耐火工作衬的整体浇注,尤其适合于铁水预处理领域KR脱硫搅拌器耐火材料衬体以及喷吹脱硫、脱磷喷枪耐火材料枪衬的整体浇注。 Refractory castables according to the present invention is very suitable for the whole cast refractory and thermal devices working lining member under thermal shock thermal working conditions, especially suitable for hot metal desulfurization pretreatment art KR blender injection desulfurization and refractory lining member, dephosphorization whole cast refractories gun gun lining.

Claims (5)

1.一种铁水脱硫搅拌器用耐火浇注料,由浇注料基料和适量的添加剂混合而成,其特征在于:所述浇注料基料按重量配比由55~65%的普通电熔莫来石、3~10%的焦宝石、3~7%的蓝晶石、7~15%的特级高铝、3~6%的硅微粉、5~10%的α-Al2O3微粉、3~10%的纯铝酸钙水泥、1.5~2.5%的致密刚玉细粉构成;所述添加剂以所述浇注料基料的总重量为计量基准,由1.5~2.5%的耐热钢纤维、≤0.5%的乳酸铝和/或≤0.5%金属铝粉、≤0.3%的三聚磷酸钠和/或≤0.5%的三聚氰胺构成。 A desulphurization stirrer castable refractory, castable mixture of binder and the amount of additive is made, wherein: said castable binder ratio by weight from 55 to 65% of normal fused mullite stone, 3 to 10% flint, 3 to 7% kyanite, 7 to 15% of grade alumina, 3 to 6% of silica powder, 5 to 10% α-Al2O3 powder, 3 to 10% of pure calcium aluminate cement, 1.5 to 2.5% of fine powder constituting the dense corundum; the total weight of the additive material is a castable base baseline measurement, from 1.5 to 2.5% of heat-resistant steel fibers, ≤0.5% of the aluminum lactate and / or ≤0.5% aluminum metal powder, ≤0.3% of sodium tripolyphosphate and / or ≤0.5% melamine configuration.
2.根据权利要求1所述的铁水脱硫搅拌器用耐火浇注料,其特征在于:所说的浇注料基料按重量配比由56~60%的普通电熔莫来石、5~8%的焦宝石、4~6%的蓝晶石、9~13%的特级高铝、4~5%的硅微粉、6~8%的α-Al2O3微粉、5~8%的纯铝酸钙水泥、2~2.5%的致密刚玉细粉构成;所说的添加剂以所述浇注料基料的总重量为计量基准,由2~2.5%的耐热钢纤维、≤0.5%的乳酸铝和/或≤0.5%金属铝粉、≤0.15%的三聚磷酸钠和/或≤0.5%的三聚氰胺构成。 The desulphurization agitator according to claim 1 with a refractory castable, wherein: said castable binder ratio by weight mullite, from 56 to 60% of normal fused, 5 to 8% flint, 4 to 6% kyanite, 9 to 13% grade alumina, 4-5% microsilica, 6-8% of α-Al2O3 powder, 5 to 8% of calcium aluminate cement, 2 to 2.5% of fine powder composed of dense corundum; said additive to the total weight of said base material is castable baseline measurement, 2 to 2.5% of a heat-resistant steel fibers, ≤0.5% of the aluminum lactate and / or ≤ 0.5% aluminum metal powder, ≤0.15% of sodium tripolyphosphate and / or ≤0.5% melamine configuration.
3.根据权利要求1或2所述的铁水脱硫搅拌器用耐火浇注料,其特征在于:所说的浇注料基料中,普通电熔莫来石的粒度为0.1~8毫米,焦宝石的粒度为0.1~1毫米,蓝晶石的粒度为150目,特级高铝是粒度为180目和325目的两种颗粒的混合物,致密刚玉细粉的粒度为325目。 The desulphurization of the agitator 12 or claim refractory castable, wherein: said castable binder, Common fused mullite particle size of 0.1 to 8 mm, the coke size gem 0.1 to 1 mm particle size kyanite 150 mesh particle size grade alumina is a mixture of two granulates object 325 and 180 mesh, dense corundum powder particle size of 325 mesh.
4.根据权利要求3所述的铁水脱硫搅拌器用耐火浇注料,其特征在于:所说的粒度为0.1~8毫米的普通电熔莫来石中,粒度在8~5毫米范围内的占38~42%、粒度在5~3毫米范围内的占36~40%、粒度在3~1毫米范围内的占5~8%、粒度在1~0.1毫米范围内的占12~17%。 The desulphurization stirrer according to claim 3 with the refractory castable, wherein: said particle size of 0.1 to 8 mm fused mullite general, the particle size accounts for 38 to 5 8 millimeters to 42%, particle size accounts for 5 to 3 mm in the range 36 to 40%, from 5 to 8% of a particle size in the range of 3 to 1 mm particle size accounts for 12% to 17% in the range of 1 to 0.1 mm.
5.根据权利要求3所述的铁水脱硫搅拌器用耐火浇注料,其特征在于:所说的特级高铝中,粒度为180目的颗粒占40~60%,粒度为325目的颗粒占60~40%。 The desulphurization of the stirrer according to claim 3, with refractory castable, wherein: said grade alumina, the particle size of 40 to 180 mesh particle 60% particle size of 325 mesh particles comprise 60% to 40% .
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