WO2015007090A1 - 浅埋煤层矿区地表堵漏的无机固化泡沫材料及制备方法 - Google Patents

浅埋煤层矿区地表堵漏的无机固化泡沫材料及制备方法 Download PDF

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WO2015007090A1
WO2015007090A1 PCT/CN2014/072169 CN2014072169W WO2015007090A1 WO 2015007090 A1 WO2015007090 A1 WO 2015007090A1 CN 2014072169 W CN2014072169 W CN 2014072169W WO 2015007090 A1 WO2015007090 A1 WO 2015007090A1
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parts
inorganic
slurry
powder
rpm
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PCT/CN2014/072169
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English (en)
French (fr)
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秦波涛
鲁义
张雷林
贾玉威
李磊
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中国矿业大学
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Priority to AU2014253466A priority Critical patent/AU2014253466B2/en
Priority to RU2014143659/03A priority patent/RU2592912C2/ru
Priority to ZA2014/07486A priority patent/ZA201407486B/en
Publication of WO2015007090A1 publication Critical patent/WO2015007090A1/zh

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    • 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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
    • C04B28/342—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders the phosphate binder being present in the starting composition as a mixture of free acid and one or more reactive oxides
    • 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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the invention relates to an inorganic solidified foam material and a preparation method thereof, in particular to an inorganic solidified foam material for surface plugging in a shallow buried coal seam mining area and a preparation method thereof.
  • Coal spontaneous combustion is one of the most important disasters faced by coal mine safety production in China, which seriously threatens the safety of underground workers and the normal mining of the working face, resulting in significant economic losses.
  • the focus of China's energy strategy has shifted westward, while the coal seams in the shallow buried mining areas in the west are prone to spontaneous combustion and shallow burial (the buried depth is generally 30 ⁇ 250m), and the surface fissures are severely leaked.
  • the resulting coal spontaneous combustion is more and more frequent, in order to be efficient.
  • crack sealing is carried out, and the contact between oxygen and coal in the goaf becomes one of the most effective means to prevent mine fire.
  • the purpose of the invention is to provide a foaming ratio of 7 to 10 times, which can quickly penetrate into small cracks, and the effect of blocking air leakage is obvious. Adjustable time, high compressive strength after curing, high temperature resistance, good heat insulation performance, inorganic solidified foam material for surface plugging of shallow buried coal seam mining area with pure inorganic and non-polluting substrate and preparation method.
  • the technical solution of the present invention comprises an inorganic curable foam material and a preparation method thereof;
  • the inorganic curable foam material comprises the following components and parts by weight: 40-60 parts of water, 100 parts of fly ash, 5 parts of slaked lime, 20 parts of cement , horn powder 0.15-0.3 parts, aluminum powder 4 parts, copper oxide 1-3.5 parts, polyphosphoric acid 0.4-1.4 parts, aluminum hydroxide 0.04-0.1 parts, hydroxypropyl methyl cellulose 0.8-1.2 parts, steel fiber 3 parts; the copper oxide is 300 mesh.
  • the mucus formed by the horn powder can reduce the surface tension of the slurry, so that the solid particles in the slurry are dispersed and the stability of the foam is improved; the aluminum powder and the slaked lime react chemically to generate gas, which together constitute the slurry.
  • Step 1 Add 35-55 parts of water, 100 parts of fly ash, 20 parts of cement, 0.8-1.2 parts of hydroxypropyl methylcellulose, 3 parts of steel fiber, 5 parts of slaked lime to the special mixing container A, and stirrer Rotating at 5000 ⁇ 200 rpm, stirring time is 2 min, forming a slurry of fly ash substrate;
  • Step 2 Add 5 parts of water and 0.15-0.3 parts of horn powder in the special mixing container B, and rotate the mixer at a speed of 10000 ⁇ 500 rpm, and stir for 3 minutes to form a mucus;
  • Step 3 Add the horn powder in the special mixing container B to the fly ash substrate slurry in the special mixing container A.
  • the special mixing container A stirrer rotates at 12000 ⁇ 500 rpm, and the stirring time is 3 min.
  • Step 4 Add a mixture of 1-3.5 parts of copper oxide, 0.4-1.4 parts of polyphosphoric acid and 0.04-0.1 parts of aluminum hydroxide to the mixture, and the stirrer rotates at 5000 ⁇ 200 rpm, stirring. The time is 5 min, forming a mixed glue solution;
  • Step 5 4 parts of aluminum powder is added to the mixed glue liquid, the stirrer is rotated at 12000 ⁇ 500 rpm, and the stirring time is 3 min, and the inorganic solidified foam fluid material for crack sealing of coal mine surface is prepared.
  • the utility model has the advantages that the mucus formed by the horn powder and the water of the invention can make the solid phase particles of the fly ash base material be uniformly dispersed, which contributes to the stability of the cells and can improve the foaming efficiency of the hydrogen gas; Copper oxide, polyphosphoric acid, and aluminum hydroxide react as an inorganic adhesive system. By changing the ratio between the three, 15 mit can be achieved at room temperature! The solidification time of the solution is adjustable between ⁇ 2h; finally, the aluminum powder and the hydrated lime (calcium hydroxide) aqueous solution react to form hydrogen as a self-reactive air entraining agent for the slurry.
  • Hydroxypropyl methylcellulose can thicken the slurry in the early stage, which helps the foam fluid to seep in the fine cracks. After curing, it can increase the toughness of the solidified foam.
  • the steel fibers are dispersed on the cell walls. After solidification, as the skeleton of the cell wall, the foam is connected to improve the compressive performance of the solidified foam; the cement promotes the hydration reaction of the fly ash, and acts as an activator to rapidly solidify the fly ash.
  • the inorganic solidified foam fluid material of the invention does not need an external gas source, and only relies on the chemical reaction of aluminum powder and slaked lime in the slurry system to generate gas as a gas source, and the process flow is simple; the foam fluid has good permeation performance, and the solidification time is adjustable, and the plugging is blocked. The wind effect is remarkable; the foaming ratio is high, the compressive strength is high, the high temperature resistance and the heat insulation performance are good, and the price is cheap; and the utility model has wide applicability in the field of surface crack sealing in coal mine and coal field fire area.
  • Example 1 First, 35 parts by weight of water, 100 parts by weight of fly ash, 20 parts by weight of cement, 0.8 parts by weight of hydroxypropylmethylcellulose, 3 parts by weight of steel fiber, and 5 parts by weight of slaked lime were added to the dedicated mixing vessel A.
  • the stirrer is rotated at 5000 ⁇ 200 rpm, and the stirring time is 2 min to form a slurry of fly ash base material; then, 5 parts of water, 0.15 parts by weight of horn powder, and 10000 ⁇ 500 are added to the special mixing container B.
  • the rotation speed of the revolution/minute is rotated for 3 minutes to form a mucus; then, the horn powder in the special mixing container B is added to the slurry of the fly ash substrate in the special mixing container A, and the special mixing container A stirrer is 12000 ⁇ Rotating at 500 rpm, stirring for 3 min, forming a mixed solution; then, adding 1 part by weight of copper oxide, 0.4 parts by weight of polyphosphoric acid, and 0.04 parts by weight of aluminum hydroxide to the mixture.
  • the copper oxide is 300 mesh, the stirrer rotates at 5000 ⁇ 200 rpm, and the stirring time is 5 min to form a mixed glue; finally, 4 parts of aluminum powder is added to the mixed glue.
  • Example 2 First, 50 parts by weight of water, 100 parts by weight of fly ash, 20 parts by weight of cement, 1.0 part by weight of hydroxypropylmethylcellulose, 3 parts by weight of steel fiber, and 5 parts by weight of slaked lime were added to the dedicated mixing vessel A.
  • the stirrer is rotated at 5000 ⁇ 200 rpm, and the stirring time is 2 min to form a slurry of fly ash substrate; then 5 parts of water, 0.25 parts by weight of horn powder, and 10000 ⁇ 500 of agitator are added to the special mixing container B.
  • the rotation speed of the revolution/minute is rotated for 3 minutes to form a mucus; then, the horn powder in the special mixing container B is added to the slurry of the fly ash substrate in the special mixing container A, and the special mixing container A stirrer is 12000 ⁇ Rotating at 500 rpm, stirring time is 3 min, forming a mixed solution; then, adding 2 parts by weight of copper oxide, 0.8 parts by weight of polyphosphoric acid, and 0.08 parts by weight of aluminum hydroxide to the mixture, The copper oxide is 300 mesh, the stirrer is rotated at 5000 ⁇ 200 rpm, and the stirring time is 5 min to form a mixed glue; finally, 4 parts of the aluminum powder is added to the mixed glue.
  • the 2MPa ground moving grouting pump is used to inject the prepared inorganic solidified foam fluid into the surface crack of the coalfield fire area where the wind leakage is required through the conveying pipeline, thereby reducing and controlling the air leakage, thereby preventing coal spontaneous combustion.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Sealing Material Composition (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

一种浅埋煤层矿区地表堵漏的无机固化泡沫材料及制备方法。所述堵漏固化泡沫包括：水、粉煤灰、熟石灰、水泥、牛角粉、铝粉、氧化铜、多聚磷酸、氢氧化铝、羟丙基甲基纤维素、钢纤维。所述制备方法包括：在水中加入粉煤灰、水泥、羟丙基甲基纤维素、钢纤维、熟石灰形成粉煤灰基材浆液；在少量水中加入牛角粉搅拌形成预制粘液，将粉煤灰基材浆液与预制粘液充分搅拌形成混合液；在混合液中添加无机胶粘体系并充分搅拌，形成混合胶粘液；加入铝粉充分搅拌均匀，利用无机自发泡体系对浆液进行发泡，制备成用于浅埋煤层矿区地表堵漏的无机固化泡沫材料。

Description

浅埋煤层矿区地表堵漏的无机固化泡沫材料及制备方法
技术领域
本发明涉及一种无机固化泡沫材料及制备方法， 特别是一种浅埋煤层矿区地表堵漏 的无机固化泡沫材料及制备方法。
背景技术
煤炭自燃是我国煤矿安全生产面临的最主要灾害之一， 严重威胁着井下工作人员的 安全以及工作面的正常回采， 导致重大的经济损失。 近年来， 我国能源战略重心西移， 而西部浅埋藏矿区煤层易自燃、 埋藏浅 （埋深一般在 30〜250m)， 地表裂隙漏风严重， 由此引发的煤炭自燃发火越来越频繁， 为了高效防治地表裂隙漏风， 在得到裂隙漏风规 律的基础上， 开展裂隙封堵， 隔绝氧气与采空区遗煤的接触就成为最有效预防矿井火灾 的手段之一。 为了有效防治由于地表裂隙漏风而导致的煤炭自燃， 国内常采用大面积地 表回填、 注浆、 注凝胶、 聚氨脂泡沫、 轻质膏体材料、 高水封堵材料等。 但这些技术都 存在一些不足： 大面积地表回填只能初步填平明显的大裂隙， 耗费大量人力物力； 注浆 过程中浆液顺着裂隙漏到井下工作面、 巷道、 效果差； 铵盐凝胶在常温下就会分解产生 氨气而严重污染矿区环境； 高分子凝胶成本高且容易龟裂； 聚氨脂泡沫在高温下容易燃 烧且成本高； 轻质膏体材料抗压强度一般， 容易产生细小裂缝； 高水封堵材料具有较好 的渗透性， 能够深入到煤体间隙， 但抗压强度不高， 有机成分热稳定差。
发明内容
针对已有的浅埋煤层矿区地表裂隙漏风封堵技术存在很多不足， 本发明的目的是要 提供一种发泡倍数为 7〜10倍，能迅速渗透至细小裂隙，堵漏风效果明显，固化时间可调， 固化后抗压强度大， 耐高温、 隔热性能好， 基材纯无机无污染的浅埋煤层矿区地表堵漏 的无机固化泡沫材料及制备方法。
本发明的技术方案包括无机固化泡沫材料及制备方法； 所述的无机固化泡沫材料包 括以下各组分及重量份数： 水 40-60份、 粉煤灰 100份、 熟石灰 5份、 水泥 20份、 牛角 粉 0.15-0.3份、 铝粉 4份、 氧化铜 1-3.5份、 多聚磷酸 0.4-1.4份、 氢氧化铝 0.04-0.1份、 羟丙基甲基纤维素 0.8-1.2份、 钢纤维 3份； 所述的氧化铜为 300目。
所述的牛角粉形成的粘液，能降低浆液的表面张力，使浆液中的固体颗粒均勾分散， 提高泡沫的稳定性； 所述的铝粉和熟石灰发生化学反应产生气体， 共同组成浆液的自产 气体系； 所述的氧化铜、 多聚磷酸、 氢氧化铝组成无机胶粘体系， 通过调整三者之间的 配比实现固化时间可调； 其制作过程是：
步骤一： 在专用混合容器 A中加入水 35-55份、 粉煤灰 100份、 水泥 20份、 羟丙 基甲基纤维素 0.8-1.2份、 钢纤维 3份、 熟石灰 5份， 搅拌器以 5000 ± 200转 /分钟转速 转动， 搅拌时间为 2min， 形成粉煤灰基材浆液；
步骤二： 在专用混合容器 B中加入水 5份、 牛角粉 0.15-0.3份， 搅拌器以 10000士 500转 /分钟转速转动， 搅拌时间为 3min， 形成粘液； 步骤三： 将专用混合容器 B中的牛角粉粘液加入专用混合容器 A中的粉煤灰基材 浆液中， 专用混合容器 A搅拌器以 12000 ± 500转 /分钟转速转动， 搅拌时间为 3min， 形 成混合液；
步骤四： 将按比例调制的氧化铜 1-3.5份、 多聚磷酸 0.4-1.4份、 氢氧化铝 0.04-0.1 份的混合物加入混合液中， 搅拌器以 5000 ± 200转 /分钟转速转动， 搅拌时间为 5min， 形成混合胶粘液；
步骤五：将铝粉 4份添加至混合胶粘液中，搅拌器以 12000 ± 500转 /分钟转速转动， 搅拌时间为 3min， 制备成用于煤矿地表裂隙封堵的无机固化泡沫流体材料。
有益效果， 由于采用了上述方案， 本发明的牛角粉和水形成的粘液能够使得粉煤灰基 材浆液固相颗粒均勾分散， 有助于泡孔的稳定， 能够提高氢气的产泡效率； 氧化铜、 多 聚磷酸、 氢氧化铝反应， 作为无机胶粘体系， 通过改变三者之间的配比能够实现在室温 条件下 15mit！〜 2h之间溶液的凝固时间可调； 最后铝粉和熟石灰 （氢氧化钙） 水溶液反 应生成氢气， 作为浆液的自反应引气剂。 羟丙基甲基纤维素前期能稠化浆液， 有助于泡 沫流体在细小裂隙中渗流， 固化后能够增加固化泡沫的韧性； 钢纤维在固化泡沫形成后 均勾的分散在泡孔壁上， 固化后作为泡孔壁的骨架， 将泡沫连接起来， 提高固化泡沫的 抗压性能； 水泥促进粉煤灰的水化反应， 作为激活剂使得粉煤灰快速固化。 本发明的无 机固化泡沫流体材料不需要外加气源， 仅依靠浆液体系中铝粉和熟石灰发生化学反应产 生气体为气源， 工艺流程简单； 泡沫流体渗透性能好， 且凝固时间可调， 堵漏风效果显 著； 发泡倍数高、 抗压强度大、 耐高温与隔热性能好、 价格便宜； 在煤矿及煤田火区地 表裂隙封堵领域具有广泛的适用性。
具体实施方式
实施例 1 : 首先在专用混合容器 A中加入水 35重量份、粉煤灰 100重量份、水泥 20 重量份、 羟丙基甲基纤维素 0.8重量份、 钢纤维 3重量份、 熟石灰 5重量份， 搅拌器以 5000 ± 200转 /分钟转速转动， 搅拌时间为 2min， 形成粉煤灰基材浆液； 接着在专用混合 容器 B中加入水 5份、 牛角粉 0.15重量份， 搅拌器以 10000 ± 500转 /分钟转速转动， 搅 拌时间为 3min， 形成粘液； 然后， 将专用混合容器 B中的牛角粉粘液加入专用混合容器 A中的粉煤灰基材浆液中， 专用混合容器 A搅拌器以 12000 ± 500转 /分钟转速转动， 搅 拌时间为 3min， 形成混合液； 然后， 将按比例调制的氧化铜 1重量份、 多聚磷酸 0.4重 量份、 氢氧化铝 0.04重量份的混合物加入混合液中， 所述的氧化铜为 300目， 搅拌器以 5000 ± 200转 /分钟转速转动， 搅拌时间为 5min， 形成混合胶粘液； 最后， 将铝粉 4份添 加至混合胶粘液中， 搅拌器以 12000 ± 500转 /分钟转速转动， 搅拌时间为 3min， 制备成 用于煤矿地表裂隙封堵的无机固化泡沫流体材料。 用 2MPa的地面移动式注浆泵将配制 好的无机固化泡沫流体通过输送管路注入到需要堵漏风的地表裂隙， 起到减少和控制漏 风的作用， 从而预防煤炭自燃。 实施例 2 : 首先在专用混合容器 A中加入水 50重量份、 粉煤灰 100重量份、 水泥 20重量份、 羟丙基甲基纤维素 1.0重量份、 钢纤维 3重量份、 熟石灰 5重量份， 搅拌器 以 5000 ± 200转 /分钟转速转动， 搅拌时间为 2min， 形成粉煤灰基材浆液； 接着在专用 混合容器 B中加入水 5份、牛角粉 0.25重量份，搅拌器以 10000 ± 500转 /分钟转速转动， 搅拌时间为 3min， 形成粘液； 然后， 将专用混合容器 B中的牛角粉粘液加入专用混合容 器 A中的粉煤灰基材浆液中， 专用混合容器 A搅拌器以 12000 ± 500转 /分钟转速转动， 搅拌时间为 3min， 形成混合液； 然后， 将按比例调制的氧化铜 2重量份、 多聚磷酸 0.8 重量份、 氢氧化铝 0.08重量份的混合物加入混合液中， 所述的氧化铜为 300目， 搅拌器 以 5000 ± 200转 /分钟转速转动， 搅拌时间为 5min， 形成混合胶粘液； 最后， 将铝粉 4 份添加至混合胶粘液中， 搅拌器以 12000 ± 500转 /分钟转速转动， 搅拌时间为 3min， 制 备成用于煤矿地表裂隙封堵的无机固化泡沫流体材料。 用 2MPa的地面移动式注浆泵将 配制好的无机固化泡沫流体通过输送管路注入到需要堵漏风的煤田火区地表裂隙， 起到 减少和控制漏风的作用， 从而预防煤炭自燃。

Claims

权利要求书
1、 一种浅埋煤层矿区地表堵漏的无机固化泡沫材料， 其特征在于， 无机固化泡沫材 料包括以下各组分及重量份数： 水 40-60份、 粉煤灰 100份、 熟石灰 5份、 水泥 20份、 牛角粉 0.15-0.3 份、 铝粉 4 份、 氧化铜 1-3.5 份、 多聚磷酸 0.4-1.4 份、 氢氧化铝 0.04-0.1份、 羟丙基甲基纤维素 0.8-1.2份、 钢纤维 3份； 所述的氧化铜为 300目。
2 、 一种如权利要求 1 所述浅埋煤层矿区地表堵漏的无机固化泡沫材料的制备方 法， 其特征在于： 所述的牛角粉形成的粘液， 能降低浆液的表面张力， 使浆液中的固体 颗粒均匀分散， 提高泡沫的稳定性； 所述的铝粉和熟石灰发生化学反应产生气体， 共同 组成浆液的自产气体系； 所述的氧化铜、 多聚磷酸、 氢氧化铝组成无机胶粘体系， 通过 调整三者之间的配比实现固化时间可调； 其制作过程是：
步骤一： 在专用混合容器 A中加入水 35-55份、 粉煤灰 100份、 水泥 20份、 羟丙基 甲基纤维素 0.8-1.2份、 钢纤维 3份、 熟石灰 5份， 搅拌器以 5000 ±200转 /分钟转速转 动， 搅拌时间为 2min， 形成粉煤灰基材浆液；
步骤二： 在专用混合容器 B中加入水 5份、 牛角粉 0.15-0.3份， 搅拌器以 10000士 500转 /分钟转速转动， 搅拌时间为 3min， 形成粘液；
步骤三： 将专用混合容器 B中的牛角粉粘液加入专用混合容器 A中的粉煤灰基材浆 液中， 专用混合容器 A搅拌器以 12000±500转 /分钟转速转动， 搅拌时间为 3min， 形成 混合液；
步骤四： 将按比例调制的氧化铜 1-3.5份、 多聚磷酸 0.4-1.4份、 氢氧化铝 0.04- 0.1 份的混合物加入混合液中， 搅拌器以 5000±200 转 /分钟转速转动， 搅拌时间为 5min, 形成混合胶粘液；
步骤五： 将铝粉 4 份添加至混合胶粘液中， 搅拌器以 12000±500 转 /分钟转速转 动， 搅拌时间为 3min， 制备成用于煤矿地表裂隙封堵的无机固化泡沫流体材料。
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