CN104649599A - Early-strength filling gel material prepared by using solid wastes - Google Patents
Early-strength filling gel material prepared by using solid wastes Download PDFInfo
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Abstract
本发明公开了一种利用固体废弃物制备的早强充填凝胶材料，该充填凝胶材料的成分以重量百分比计包括：电石渣4％—6％、脱硫石膏16％—18％、工业芒硝2%—3%、五水亚硫酸钠1%—2%、粉煤灰5%—15%和矿渣微粉62％—72％。本发明所制备的充填凝胶材料的原材料主要为废弃的电石渣、脱硫石膏、水淬渣和粉煤灰，含量为95%以上，材料来源广，易粉磨，制备凝胶材料的成本低、工艺简单。此外，固体废弃物的有效利用科减少固体废弃物的对方，提高其利用率，节能环保。The invention discloses an early-strength filling gel material prepared by using solid waste. The composition of the filling gel material includes 4%-6% of calcium carbide slag, 16%-18% of desulfurized gypsum, and industrial mirabilite 2%-3%, sodium sulfite pentahydrate 1%-2%, fly ash 5%-15% and slag powder 62%-72%. The raw materials of the filling gel material prepared by the present invention are mainly discarded calcium carbide slag, desulfurized gypsum, water quenching slag and fly ash, with a content of more than 95%, wide sources of materials, easy grinding, and low cost of preparing the gel material ,Simple process. In addition, the effective utilization of solid waste reduces the amount of solid waste, improves its utilization rate, saves energy and protects the environment.
Description
技术领域 technical field
本发明涉及一种采矿用早强充填凝胶材料，具体涉及一种利用固体废弃物制备的早强充填凝胶材料。 The invention relates to an early-strength filling gel material for mining, in particular to an early-strength filling gel material prepared from solid waste.
背景技术 Background technique
资源开采与冶金工业生产过程中会排放出大量的矿渣、脱硫石膏、脱硫灰渣、电石渣和粉煤灰等固体废弃物。一方面，废弃物堆放占用了大量土地，污染环境；另一方面，工业废弃物可作为二次资源，不加以利用的大量堆放必然造成资源浪费。因此，利用固体废弃物制备矿山所需要的充填凝胶材料，不仅可以实现固体废弃物的资源化利用，减少废弃物堆放占用土地，而且还能够降低充填采矿成本，提高采矿经济效益。 A large amount of solid waste such as slag, desulfurized gypsum, desulfurized ash, carbide slag and fly ash will be discharged in the process of resource mining and metallurgical industry production. On the one hand, the stacking of waste occupies a large amount of land and pollutes the environment; on the other hand, industrial waste can be used as secondary resources, and a large amount of stacking without utilization will inevitably lead to waste of resources. Therefore, the use of solid waste to prepare the filling gel material required for mines can not only realize the resource utilization of solid waste, reduce the land occupied by waste stacking, but also reduce the cost of filling mining and improve the economic benefits of mining.
对于矿渣、脱硫石膏、粉煤灰等固体废弃物的资源化利用，目前大多仍局限于水泥掺合料，成本高，固废的资源利用附加值低。充填矿山对充填凝胶材料的需求量大，水泥添加的充填凝胶材料已不能满足使用需求。 For the resource utilization of solid waste such as slag, desulfurized gypsum, and fly ash, most of them are still limited to cement admixtures at present, with high cost and low added value of solid waste resource utilization. Filling mines have a large demand for filling gel materials, and the filling gel materials added by cement can no longer meet the needs of use.
发明内容 Contents of the invention
针对上述问题，本发明提供了一种用固体废弃物制备的早强充填凝胶材料，该凝胶材料采用电石渣和脱硫石膏作为主要复合激发剂，对具有潜在活性的矿渣微粉和粉煤灰混合料进行高效激发，通过少量外加剂来提高充填凝胶材料的早期强度，用于下向分层胶结充填法采矿。 In view of the above problems, the present invention provides a kind of early-strength filling gel material prepared from solid waste. The gel material adopts calcium carbide slag and desulfurized gypsum as the main composite activator, and is effective for potential active slag powder and fly ash. The mixture is efficiently stimulated, and the early strength of the filling gel material is improved by a small amount of admixture, which is used for mining in the downward layered cemented filling method.
上述目的是通过下述方案实现的。 Above-mentioned purpose is realized by following scheme.
一种利用固体废弃物制备的早强充填凝胶材料，其特征在于，该充填凝胶材料的成分以重量百分比计包括：电石渣4％—6％、脱硫石膏16％—18％、工业芒硝2%—3%、五水亚硫酸钠1%—2%、粉煤灰5%—15%和矿渣微粉62％—72％。 An early-strength filling gel material prepared by using solid waste, characterized in that the composition of the filling gel material includes, by weight percentage: 4%-6% of carbide slag, 16%-18% of desulfurized gypsum, industrial Glauber's salt 2%-3%, sodium sulfite pentahydrate 1%-2%, fly ash 5%-15% and slag powder 62%-72%.
根据上述的利用固体废弃物制备的早强充填凝胶材料，其特征在于，所述电石渣的化学成分以重量百分比计包括：65％—68%CaO，2%—3%Al2O3，4%—5%SiO2，SO3 <0.15%，FeO<0.5%，烧失量<26%，余量为杂质。 According to the above-mentioned early-strength filling gel material prepared by using solid waste, it is characterized in that the chemical composition of the calcium carbide slag includes: 65%-68% CaO, 2%-3% Al 2 O 3 , 4%—5% SiO 2 , SO 3 <0.15%, FeO<0.5%, loss on ignition <26%, and the balance is impurities.
根据上述的利用固体废弃物制备的早强充填凝胶材料，其特征在于，所述脱硫石膏化学成分以重量百分比计包括：32％—34%CaO，1%—2%Al2O3，7%—8%MgO，3%—4%SiO2，45%—47%SO3，FeO<0.1%，烧失量<10%，余量为杂质。 According to the above-mentioned early-strength filling gel material prepared by using solid waste, it is characterized in that the chemical components of the desulfurized gypsum include: 32%-34% CaO, 1%-2%Al 2 O 3 ,7 %—8%MgO, 3%—4%SiO 2 , 45%—47%SO 3 , FeO<0.1%, loss on ignition<10%, and the balance is impurities.
根据上述的利用固体废弃物制备的早强充填凝胶材料，其特征在于，所述粉煤灰化学成分以重量百分比计包括：37％—39%CaO，15%—16%Al2O3，10%—11%MgO，31%—33%SiO2，SO3 <0.1%，FeO<0.1%，Mn2O3<0.5%，余量为杂质。 According to the above-mentioned early-strength filling gel material prepared by using solid waste, it is characterized in that the chemical composition of the fly ash includes: 37%-39% CaO, 15%-16% Al 2 O 3 , 10%—11% MgO, 31%—33% SiO 2 , SO 3 <0.1%, FeO<0.1%, Mn 2 O 3 <0.5%, and the balance is impurities.
根据上述的利用固体废弃物制备的早强充填凝胶材料，其特征在于，所述矿渣微粉的化学成分以重量百分比计包括：37％—39%CaO，15%—16%Al2O3，10%—11%MgO，31%—33%SiO2，SO3 <0.1%，FeO<0.1%，Mn2O3<0.5%，余量为杂质。 According to the above-mentioned early-strength filling gel material prepared by using solid waste, it is characterized in that the chemical composition of the slag fine powder includes: 37%-39% CaO, 15%-16% Al 2 O 3 , 10%—11% MgO, 31%—33% SiO 2 , SO 3 <0.1%, FeO<0.1%, Mn 2 O 3 <0.5%, and the balance is impurities.
根据上述的利用固体废弃物制备的早强充填凝胶材料，其特征在于，所述充填凝胶材料为粉体，粉体的粒度分布为：d10＝4.0—5.0μm、d50＝10.0—12.0μm、d90＝42.0—44.0μm，dav＝17.0—19.0μm，粉体的比表面积为410—430m2/kg。 According to the aforementioned early-strength filling gel material prepared from solid waste, it is characterized in that the filling gel material is a powder, and the particle size distribution of the powder is: d 10 =4.0-5.0 μm, d 50 =10.0- 12.0μm, d 90 =42.0-44.0μm, d av =17.0-19.0μm, the specific surface area of the powder is 410-430m 2 /kg.
本发明的有益效果： Beneficial effects of the present invention:
本发明以电石渣和脱硫石膏作为复合激发剂，采用芒硝和亚硫酸钠作为早强外加剂，对具有潜在活性的水淬渣粉和粉煤灰进行高效激发，从而产生水化凝胶作用，在水化反映过程中结石硬化，形成具有强度较高的胶结充填体。本发明所制备的充填凝胶材料的原材料主要为废弃的电石渣、脱硫石膏、水淬渣和粉煤灰，含量为95%以上，材料来源广，易粉磨，制备凝胶材料的成本低、工艺简单。此外，固体废弃物的有效利用科减少固体废弃物的对方，提高其利用率，节能环保。 The present invention uses calcium carbide slag and desulfurized gypsum as composite activators, uses mirabilite and sodium sulfite as early-strength admixtures, and efficiently excites potentially active water-quenched slag powder and fly ash, thereby producing hydration gelation. During the chemical reaction process, the stones harden to form a cemented filling body with high strength. The raw materials of the filling gel material prepared by the present invention are mainly discarded calcium carbide slag, desulfurized gypsum, water quenching slag and fly ash, with a content of more than 95%, wide sources of materials, easy grinding, and low cost of preparing the gel material ,Simple process. In addition, the effective utilization of solid waste reduces the amount of solid waste, improves its utilization rate, saves energy and protects the environment.
具体实施方式 detailed description
本发明的充填凝胶材料适用于棒磨砂充填骨料，其粒度分布为：d10＝0.14—0.16mm、d50＝0.75—0.95mm、d60＝1.25—1.43mm、d90＝3.1—3.3mm，dav＝0.55—0.75mm。 The filling gel material of the present invention is suitable for rod frosting filling aggregate, and its particle size distribution is: d 10 =0.14-0.16mm, d 50 =0.75-0.95mm, d 60 =1.25-1.43mm, d 90 =3.1-3.3 mm, d av =0.55—0.75mm.
本发明的利用固体废弃物制备的早强充填凝胶材料为粉体，粉体的粒度分布为：d10＝4.0—5.0μm、d50＝10.0—12.0μm、d90＝42.0—44.0μm，dav＝17.0—19.0μm，粉体的比表面积为410—430m2/kg。充填凝胶材料的成分按重量百分比计包括：电石渣4％—6％、脱硫石膏16％—18％、工业芒硝2%—3%、五水亚硫酸钠1%—2%、粉煤灰5%—15%和矿渣微粉62％—72％。其中电石渣的化学成分以重量百分比计包括：65％—68%CaO，2%—3%Al2O3，4%—5%SiO2，SO3 <0.15%，FeO<0.5%，烧失量<26%，余量为杂质；脱硫石膏化学成分以重量百分比计包括：32％—34%CaO，1%—2%Al2O3，7%—8%MgO，3%—4%SiO2，45%—47%SO3，FeO<0.1%，烧失量<10%，余量为杂质；粉煤灰化学成分以重量百分比计包括：1％—2%CaO、12%—14%Al2O3、2%—4%MgO、30%—34%SiO2，其他46%—55%；矿渣微粉的化学成分以重量百分比计包括：37％—39%CaO，15%—16%Al2O3，10%—11%MgO，31%—33%SiO2，SO3 <0.1%，FeO<0.1%，Mn2O3<0.5%，余量为杂质。 The early-strength filling gel material prepared by using solid waste of the present invention is a powder, and the particle size distribution of the powder is: d 10 =4.0-5.0 μm, d 50 =10.0-12.0 μm, d 90 =42.0-44.0 μm, d av =17.0-19.0μm, the specific surface area of the powder is 410-430m 2 /kg. The composition of the filling gel material includes by weight percentage: 4%-6% of calcium carbide slag, 16%-18% of desulfurized gypsum, 2%-3% of industrial mirabilite, 1%-2% of sodium sulfite pentahydrate, and 5% of fly ash -15% and slag powder 62% -72%. Among them, the chemical composition of calcium carbide slag includes: 65%-68%CaO, 2%-3%Al 2 O 3 , 4%-5%SiO 2 , SO 3 <0.15%, FeO<0.5%, loss on ignition content <26%, and the rest is impurities; the chemical composition of desulfurized gypsum includes: 32%-34%CaO, 1%-2%Al 2 O 3 , 7%-8%MgO, 3%-4%SiO 2 , 45%-47%SO 3 , FeO<0.1%, loss on ignition<10%, and the rest is impurities; the chemical composition of fly ash includes: 1%-2%CaO, 12%-14% Al 2 O 3 , 2%—4% MgO, 30%—34% SiO 2 , others 46%—55%; the chemical composition of slag fine powder includes: 37%—39% CaO, 15%—16% Al 2 O 3 , 10%—11% MgO, 31%—33% SiO 2 , SO 3 <0.1%, FeO<0.1%, Mn 2 O 3 <0.5%, and the balance is impurities.
下面用具体实施例对本发明进行进一步的说明。 The present invention will be further described below with specific examples.
实施例1 Example 1
充填胶凝材料的化学成分按重量百分比计包括：电石渣4％、脱硫石膏16％、工业芒硝2%、五水亚硫酸钠1%、粉煤灰5%和矿渣微粉72％。混合后，用球磨机将原材料研磨成粉体，粉体的粒度分布为：d10＝4.0μm、d50＝10.0μm、d90＝42.0μm，dav＝17.0μm，粉体的比表面积为430m2/kg。 The chemical composition of the filling cementitious material includes, by weight percentage: 4% calcium carbide slag, 16% desulfurized gypsum, 2% industrial Glauber's salt, 1% sodium sulfite pentahydrate, 5% fly ash and 72% slag powder. After mixing, use a ball mill to grind the raw materials into powder. The particle size distribution of the powder is: d 10 =4.0μm, d 50 =10.0μm, d 90 =42.0μm, d av =17.0μm, and the specific surface area of the powder is 430m 2 /kg.
其中，电石渣的化学成分以重量百分比计包括：65％CaO，3%Al2O3，5%SiO2，SO3 <0.15%，FeO<0.5%，烧失量25%，余量为杂质；脱硫石膏化学成分以重量百分比计包括：32％CaO，2%Al2O3，8%MgO，4%SiO2，47%SO3，FeO<0.1%，烧失量6%，余量为杂质；粉煤灰化学成分以重量百分比计包括：1％CaO、12%Al2O3、2%MgO、30%SiO2，其他55%；矿渣微粉的化学成分以重量百分比计包括：37％CaO，15%Al2O3，10%MgO，31%SiO2，SO3 <0.1%，FeO<0.1%，Mn2O3<0.5%，余量为杂质。 Among them, the chemical composition of calcium carbide slag includes: 65% CaO, 3% Al 2 O 3 , 5% SiO 2 , SO 3 <0.15%, FeO<0.5%, loss on ignition 25%, and the balance is impurities ; The chemical composition of desulfurized gypsum includes: 32% CaO, 2% Al 2 O 3 , 8% MgO, 4% SiO 2 , 47% SO 3 , FeO<0.1%, loss on ignition 6%, the balance is Impurities; the chemical composition of fly ash includes: 1% CaO, 12% Al 2 O 3 , 2% MgO, 30% SiO 2 , and 55% by weight; the chemical composition of slag fine powder includes: 37% by weight CaO, 15%Al 2 O 3 , 10%MgO, 31%SiO 2 , SO 3 <0.1%, FeO<0.1%, Mn 2 O 3 <0.5%, and the balance is impurities.
以棒磨砂作为充填料，粒度分布为：d10＝0.15mm、d50＝0.85mm、d60＝1.34mm、d90＝3.2mm，dav＝0.65mm。 Rod sand is used as filling material, and the particle size distribution is: d 10 =0.15mm, d 50 =0.85mm, d 60 =1.34mm, d 90 =3.2mm, d av =0.65mm.
本凝胶材料胶砂强度试验：根据GB-T 17671-1999《水泥胶砂强度检验方法》检测本凝胶材料的胶砂强度。试验采用胶砂比为1:4，料浆质量浓度为78%。 The cement mortar strength test of this gel material: according to GB-T 17671-1999 "Cement Mortar Strength Test Method", the mortar strength of this gel material is tested. The test uses a mortar ratio of 1:4 and a slurry mass concentration of 78%.
由此获得的3d和7d的充填体强度分别为2.14MPa和4.51MPa。 The resulting filling body strengths of 3d and 7d are 2.14MPa and 4.51MPa, respectively.
实施例2 Example 2
充填胶凝材料的化学成分按重量百分比计包括：电石渣6％、脱硫石膏18％、工业芒硝3%、五水亚硫酸钠2%、粉煤灰9%和矿渣微粉62％。混合后，用球磨机将原材料研磨成粉体，粉体的粒度分布为：d10＝5.0μm、d50＝12.0μm、d90＝44.0μm，dav＝19.0μm，粉体的比表面积为410m2/kg。 The chemical composition of the filling cementitious material includes 6% of calcium carbide slag, 18% of desulfurized gypsum, 3% of industrial mirabilite, 2% of sodium sulfite pentahydrate, 9% of fly ash and 62% of slag micropowder by weight percentage. After mixing, use a ball mill to grind the raw materials into powder. The particle size distribution of the powder is: d 10 =5.0 μm, d 50 =12.0 μm, d 90 =44.0 μm, d av =19.0 μm, and the specific surface area of the powder is 410m 2 /kg.
其中电石渣的化学成分以重量百分比计包括：68%CaO，2%Al2O3，4%SiO2，SO3 <0.15%，FeO<0.5%，烧失量24%，余量为杂质；脱硫石膏化学成分以重量百分比计包括：34%CaO，1%Al2O3，7%MgO，3%SiO2，45%SO3，FeO<0.1%，烧失量8%，余量为杂质；粉煤灰化学成分以重量百分比计包括：2%CaO、14%Al2O3、4%MgO、34%SiO2，其他46%；矿渣微粉的化学成分以重量百分比计包括：39%CaO，16%Al2O3，11%MgO，33%SiO2，SO3 <0.1%，FeO<0.1%，Mn2O3<0.5%，余量为杂质。 Among them, the chemical composition of calcium carbide slag includes: 68% CaO, 2% Al 2 O 3 , 4% SiO 2 , SO 3 <0.15%, FeO<0.5%, loss on ignition 24%, and the balance is impurities; The chemical composition of desulfurized gypsum includes by weight percentage: 34% CaO, 1% Al 2 O 3 , 7% MgO, 3% SiO 2 , 45% SO 3 , FeO<0.1%, loss on ignition 8%, and the balance is impurities ; The chemical composition of fly ash includes: 2% CaO, 14% Al 2 O 3 , 4% MgO, 34% SiO 2 , and other 46% by weight percentage; the chemical composition of slag fine powder includes: 39% CaO by weight percentage , 16%Al 2 O 3 , 11%MgO, 33%SiO 2 , SO 3 <0.1%, FeO<0.1%, Mn 2 O 3 <0.5%, and the balance is impurities.
以棒磨砂作为充填料，粒度分布为：d10＝0.16mm、d50＝0.95mm、d60＝1.43mm、d90＝3.3mm，dav＝0.75mm。 Rod sand is used as the filler, and the particle size distribution is: d 10 =0.16mm, d 50 =0.95mm, d 60 =1.43mm, d 90 =3.3mm, d av =0.75mm.
本凝胶材料胶砂强度试验：根据GB-T 17671-1999《水泥胶砂强度检验方法》检测本凝胶材料的胶砂强度。试验采用胶砂比为1:4，料浆质量浓度为78%。 The cement mortar strength test of this gel material: according to GB-T 17671-1999 "Cement Mortar Strength Test Method", the mortar strength of this gel material is tested. The test uses a mortar ratio of 1:4 and a slurry mass concentration of 78%.
由此获得的3d和7d的充填体强度分别为2.75MPa和5.39MPa。 The resulting filling body strengths of 3d and 7d are 2.75MPa and 5.39MPa, respectively.
实施例3 Example 3
充填胶凝材料的化学成分按重量百分比计包括：电石渣4％、脱硫石膏16％、工业芒硝2%、五水亚硫酸钠1%、粉煤灰15%和矿渣微粉62％。混合后，用球磨机将原材料研磨成粉体，粉体的粒度分布为：d10＝4.48μm、d50＝12.13μm、d90＝61.68μm，dav＝24.31μm。 The chemical composition of the filling cementitious material includes, by weight percentage: 4% calcium carbide slag, 16% desulfurized gypsum, 2% industrial mirabilite, 1% sodium sulfite pentahydrate, 15% fly ash and 62% slag powder. After mixing, use a ball mill to grind the raw materials into powder. The particle size distribution of the powder is: d 10 =4.48 μm, d 50 =12.13 μm, d 90 =61.68 μm, d av =24.31 μm.
其中电石渣的化学成分以重量百分比计包括：67%CaO，2.5%Al2O3，4.5SiO2，SO3 <0.15%，FeO<0.5%，烧失量24%，余量为杂质；脱硫石膏化学成分以重量百分比计包括：33%CaO，2%Al2O3，8%MgO，4%SiO2，47%SO3，FeO<0.1%，烧失量4%，余量为杂质；粉煤灰化学成分以重量百分比计包括：2%CaO、13%Al2O3、3%MgO、32%SiO2，其他50%；矿渣微粉的化学成分以重量百分比计包括：38%CaO，15.5%Al2O3，10.5%MgO，32%SiO2，SO3 <0.1%，FeO<0.1%，Mn2O3<0.5%，余量为杂质。 Among them, the chemical composition of calcium carbide slag includes: 67%CaO, 2.5%Al 2 O 3 , 4.5SiO 2 , SO 3 <0.15%, FeO<0.5%, loss on ignition 24%, and the balance is impurities; desulfurization The chemical composition of gypsum includes: 33% CaO, 2% Al 2 O 3 , 8% MgO, 4% SiO 2 , 47% SO 3 , FeO<0.1%, loss on ignition 4%, and impurities in the balance; The chemical composition of fly ash includes: 2 %CaO, 13% Al2O3 , 3%MgO, 32% SiO2 , and other 50% by weight percentage; the chemical composition of slag fine powder includes: 38%CaO, 15.5%Al 2 O 3 , 10.5%MgO, 32%SiO 2 , SO 3 <0.1%, FeO<0.1%, Mn 2 O 3 <0.5%, and the balance is impurities.
以棒磨砂作为充填料，粒度分布为：d10＝0.14mm、d50＝0.75mm、d60＝1.25mm、d90＝3.1mm，dav＝0.75mm。 Rod sand is used as the filler, and the particle size distribution is: d 10 =0.14mm, d 50 =0.75mm, d 60 =1.25mm, d 90 =3.1mm, d av =0.75mm.
本凝胶材料胶砂强度试验：根据GB-T 17671-1999《水泥胶砂强度检验方法》检测本凝胶材料的胶砂强度。试验采用胶砂比为1:4，料浆质量浓度为78%。 The cement mortar strength test of this gel material: According to GB-T 17671-1999 "Cement Mortar Strength Test Method", the mortar strength of this gel material is tested. The test uses a mortar ratio of 1:4 and a slurry mass concentration of 78%.
由此获得的3d和7d的充填体强度分别为1.79MPa和3.81MPa。 The resulting filling body strengths of 3d and 7d are 1.79MPa and 3.81MPa, respectively.
采用32.5#普通硅酸盐水泥在与本凝胶材料相同灰砂比和料浆浓度的条件下，胶结充填体的3d和7d强度分别为1.68MPa和3.96MPa。由此可见，本发明制备的凝胶材料的早期强度均优于32.5#水泥，而材料成本仅为32.5#水泥80%—85%。 Using 32.5# ordinary Portland cement under the same lime-sand ratio and slurry concentration as the gel material, the 3d and 7d strengths of the cemented filling body are 1.68MPa and 3.96MPa, respectively. It can be seen that the early strength of the gel material prepared by the present invention is better than 32.5# cement, and the material cost is only 80%-85% of 32.5# cement.
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| CN106145806A (en) * | 2016-07-01 | 2016-11-23 | 山东安实绿色开采技术发展有限公司 | The strongest a kind of environmental protection cracking resistance adhesive mortar and preparation method thereof |
| CN106698984A (en) * | 2017-02-07 | 2017-05-24 | 山东科技大学 | Application of carbide slag solid wastes as raw materials for preparing mineral filling gel material, filling gel material and filling material |
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| CN109503015A (en) * | 2018-12-25 | 2019-03-22 | 赤峰市森元新型材料有限公司 | A kind of high activity construction material auxiliary material and preparation method thereof |
| CN112374849A (en) * | 2020-10-27 | 2021-02-19 | 西北矿冶研究院 | Filling material suitable for metal underground mine and use method thereof |
| CN112851162A (en) * | 2021-01-27 | 2021-05-28 | 广东能源集团科学技术研究院有限公司 | Cementing material and preparation method thereof |
| CN112939524A (en) * | 2021-04-16 | 2021-06-11 | 石河子大学 | Preparation method of carbide slag and geopolymer building block excited by mirabilite |
| CN115490447A (en) * | 2022-10-09 | 2022-12-20 | 碳达(深圳)新材料技术有限责任公司 | Full-solid waste alkali-activated cementing material and preparation method thereof |
| CN115490447B (en) * | 2022-10-09 | 2023-04-25 | 碳达(深圳)新材料技术有限责任公司 | Full solid waste alkali-activated cementing material and preparation method thereof |
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