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Method for preparing magnesium silicate cementing material by taking solid waste boric sludge as raw material
The invention discloses a method for preparing a magnesium silicate cementing material by taking solid waste boric sludge as a raw material, and belongs to a comprehensive utilization technology of industrial solid waste, the method comprises the following steps: drying boric sludge, adding a certain mass of carbon nanotubes, carrying out ball milling and sieving to obtain fine powder, carrying out carbonization in a reaction kettle for a period of time, carrying out magnetic separation to remove iron, and drying to obtain the magnesium silicate cementing material. Adding light calcined magnesia or active SiO2 until the mass ratio of MgO to SiO2 in the filter residues is (1: 1)-(4: 1), adding deionized water accounting for 50% of the mass of the filter residues, and stirring for 1-2 hours to obtain slurry; and pouring the slurry into a mold for rapid molding, demolding, and maintaining. The invention provides the method for directly obtaining the magnesium silicate cementing material by taking the solid waste boric sludge as a main raw material through a certain treatment process, the process flow is simple, the energy consumption is lower, solid, liquid and gas wastes are not discharged, 100% reutilization of the boric sludge solid waste is realized, and meanwhile, the obtained magnesium silicate cementing material is stable in performance, has better bending strength and is suitable for industrial production. The cement can partially replace calcium silicate cement and has certain economic value and environmental protection value.
本发明公开了一种以固废硼泥为原料制备硅酸镁胶凝材料的方法，属于工业固体废弃物的综合利用技术，该方法包括如下步骤：烘干硼泥后加入一定质量的碳纳米管，球磨过筛成细粉，反应釜碳化一段时间后磁选除铁，添加轻烧氧化镁或活性SiO2，使得滤渣中MgO：SiO2质量比为1:1~4:1，加入滤渣质量50%的去离子水，搅拌1~2h获得浆液；将浆液倒入模具中快速成型，经脱模、养护即可获得。本发明提供了一种由固废硼泥为主要原料经过一定处理工艺直接获得硅酸镁胶凝材料的方法，工艺流程简单，能耗较低，没有固、液、气废弃物的排放，实现对硼泥固废的100%再利用，同时获得的硅酸镁胶凝材料性能稳定，有较好的抗弯强度，可部分取代硅酸钙水泥，具有一定的经济价值与环保价值。
Method for preparing magnesium silicate cementing material by taking solid waste boric sludge as raw material
The invention discloses a method for preparing a magnesium silicate cementing material by taking solid waste boric sludge as a raw material, and belongs to a comprehensive utilization technology of industrial solid waste, the method comprises the following steps: drying boric sludge, adding a certain mass of carbon nanotubes, carrying out ball milling and sieving to obtain fine powder, carrying out carbonization in a reaction kettle for a period of time, carrying out magnetic separation to remove iron, and drying to obtain the magnesium silicate cementing material. Adding light calcined magnesia or active SiO2 until the mass ratio of MgO to SiO2 in the filter residues is (1: 1)-(4: 1), adding deionized water accounting for 50% of the mass of the filter residues, and stirring for 1-2 hours to obtain slurry; and pouring the slurry into a mold for rapid molding, demolding, and maintaining. The invention provides the method for directly obtaining the magnesium silicate cementing material by taking the solid waste boric sludge as a main raw material through a certain treatment process, the process flow is simple, the energy consumption is lower, solid, liquid and gas wastes are not discharged, 100% reutilization of the boric sludge solid waste is realized, and meanwhile, the obtained magnesium silicate cementing material is stable in performance, has better bending strength and is suitable for industrial production. The cement can partially replace calcium silicate cement and has certain economic value and environmental protection value.
本发明公开了一种以固废硼泥为原料制备硅酸镁胶凝材料的方法，属于工业固体废弃物的综合利用技术，该方法包括如下步骤：烘干硼泥后加入一定质量的碳纳米管，球磨过筛成细粉，反应釜碳化一段时间后磁选除铁，添加轻烧氧化镁或活性SiO2，使得滤渣中MgO：SiO2质量比为1:1~4:1，加入滤渣质量50%的去离子水，搅拌1~2h获得浆液；将浆液倒入模具中快速成型，经脱模、养护即可获得。本发明提供了一种由固废硼泥为主要原料经过一定处理工艺直接获得硅酸镁胶凝材料的方法，工艺流程简单，能耗较低，没有固、液、气废弃物的排放，实现对硼泥固废的100%再利用，同时获得的硅酸镁胶凝材料性能稳定，有较好的抗弯强度，可部分取代硅酸钙水泥，具有一定的经济价值与环保价值。
Method for preparing magnesium silicate cementing material by taking solid waste boric sludge as raw material
一种以固废硼泥为原料制备硅酸镁胶凝材料的方法
SONG FENGDAN (Autor:in)
22.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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