A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Production process of environment-friendly magnesium oxysulfate material and magnesium oxysulfate board
The invention discloses a production process of an environment-friendly magnesium oxysulfate material and a magnesium oxysulfate board. The invention relates to a production process of an environment-friendly magnesium oxysulfate material. The production process comprises the following steps: preparing light calcined magnesium oxide with the active magnesium oxide content of 60-80wt%; adding sulfuric acid into the black liquor obtained by the sulfate pulping method to adjust the pH value until the pH value is less than or equal to 3, and adding light calcined magnesia to prepare a magnesium sulfate solution; when the magnesium sulfate solution is adjusted to a proper concentration, adding the light calcined magnesia and the modifier again to prepare magnesium oxysulfate slurry; wherein the modifying agent comprises a water reducing agent, chelating resin taking nitrogen as a coordination atom, a dispersing agent and a waterproof agent, and the prepared magnesium oxysulfate material has excellent water resistance and mechanical properties by adjusting the material ratio of the light calcined magnesia, the modifying agent and the magnesium sulfate solution which are fed twice.
本申请公开了一种环保型硫氧镁材料生产工艺及硫氧镁板。环保型硫氧镁材料生产工艺，包括如下步骤：制备活性氧化镁含量在60～80wt%的轻烧氧化镁；硫酸盐制浆法所得的黑液中加入硫酸调节pH值，至pH值≤3后，加入轻烧氧化镁制备硫酸镁溶液；硫酸镁溶液调节至合适浓度时，再次加入轻烧氧化镁和改性剂，制成硫氧镁浆料；其中，改性剂包括减水剂、以氮为配位原子的螯合树脂、分散剂、防水剂，通过调整二次投入的轻烧氧化镁、改性剂和硫酸镁溶液的物料比，使得制得的硫氧镁材料具有优异的耐水性和力学性能。
Production process of environment-friendly magnesium oxysulfate material and magnesium oxysulfate board
The invention discloses a production process of an environment-friendly magnesium oxysulfate material and a magnesium oxysulfate board. The invention relates to a production process of an environment-friendly magnesium oxysulfate material. The production process comprises the following steps: preparing light calcined magnesium oxide with the active magnesium oxide content of 60-80wt%; adding sulfuric acid into the black liquor obtained by the sulfate pulping method to adjust the pH value until the pH value is less than or equal to 3, and adding light calcined magnesia to prepare a magnesium sulfate solution; when the magnesium sulfate solution is adjusted to a proper concentration, adding the light calcined magnesia and the modifier again to prepare magnesium oxysulfate slurry; wherein the modifying agent comprises a water reducing agent, chelating resin taking nitrogen as a coordination atom, a dispersing agent and a waterproof agent, and the prepared magnesium oxysulfate material has excellent water resistance and mechanical properties by adjusting the material ratio of the light calcined magnesia, the modifying agent and the magnesium sulfate solution which are fed twice.
本申请公开了一种环保型硫氧镁材料生产工艺及硫氧镁板。环保型硫氧镁材料生产工艺，包括如下步骤：制备活性氧化镁含量在60～80wt%的轻烧氧化镁；硫酸盐制浆法所得的黑液中加入硫酸调节pH值，至pH值≤3后，加入轻烧氧化镁制备硫酸镁溶液；硫酸镁溶液调节至合适浓度时，再次加入轻烧氧化镁和改性剂，制成硫氧镁浆料；其中，改性剂包括减水剂、以氮为配位原子的螯合树脂、分散剂、防水剂，通过调整二次投入的轻烧氧化镁、改性剂和硫酸镁溶液的物料比，使得制得的硫氧镁材料具有优异的耐水性和力学性能。
Production process of environment-friendly magnesium oxysulfate material and magnesium oxysulfate board
环保型硫氧镁材料生产工艺及硫氧镁板
LU YING (author) / LIU LIXIN (author) / ZHOU DAWEI (author) / WANG XIAOLIANG (author) / BIAN SICONG (author)
2022-06-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Environment-friendly preparation process of light magnesium oxysulfate wall material
| European Patent Office | 2021
Magnesium Oxysulfate Fibercement
| Tema Archive | 2014
Magnesium Oxysulfate Fibercement
| British Library Online Contents | 2014