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Method for preparing open-cell foam material by using coal water slurry gasification slag as single raw material
The invention discloses a coal water slurry gasified slag-based open-cell foam material which is prepared by mixing high-ash gasified slag with different size fractions according to different mass ratios and then firing in air. The preparation method comprises the following steps: firstly, drying, screening and reselecting the coal water slurry gasification coarse slag to obtain large/medium/small-particle-grade high-ash gasification slag, then uniformly mixing the large/medium/small-particle-grade high-ash gasification slag according to different mass ratios, paving the mixture on a self-made firing mold, firing the mixture in a muffle furnace at 800-850 DEG C for 30 minutes, and finally naturally cooling and molding. The high-ash particles are enriched through screening and reselection, the adverse effect of residual carbon combustion on foaming particle bonding is reduced, the characteristics that the high-ash components are rich in glass phase and high-temperature thermal expansion bonding are fully played, and preparation of the formed open-cell foaming material without preforming or additives such as a fluxing agent, a foaming agent and a bonding agent is achieved. The volume density of the material is lower than 0.50 g/cm < 3 >, the compressive strength is up to 2.25 Mpa, the porosity is high, and the material has good filtering performance, is non-toxic and harmless, and can provide a new thought for high-value utilization of coal water slurry gasification slag.
本发明公开的水煤浆气化渣基开孔泡沫材料，由不同粒级高灰气化渣按不同质量比混合后在空气中烧制而成。其制备方法是：首先将水煤浆气化粗渣干燥、筛分和重选，获得大/中/小粒级高灰气化渣，然后将它们按不同质量比混匀铺平在自制烧制模具，再放入马弗炉中在800～850℃下烧制30min，最后自然冷却成型。本发明通过筛分和重选富集了高灰颗粒，降低了残碳燃烧对发泡颗粒粘结的不利影响，充分发挥了高灰组分富含玻璃相和高温热胀粘结的特性，实现无需预成型或助熔剂、发泡剂、粘结剂等外加剂的成型开孔发泡材料制备。该材料体积密度低于0.50g/cm3、抗压强度高达2.25Mpa，孔隙率高，具有良好的过滤性能，且无毒无害，可为水煤浆气化渣的高值化利用提供新思路。
Method for preparing open-cell foam material by using coal water slurry gasification slag as single raw material
The invention discloses a coal water slurry gasified slag-based open-cell foam material which is prepared by mixing high-ash gasified slag with different size fractions according to different mass ratios and then firing in air. The preparation method comprises the following steps: firstly, drying, screening and reselecting the coal water slurry gasification coarse slag to obtain large/medium/small-particle-grade high-ash gasification slag, then uniformly mixing the large/medium/small-particle-grade high-ash gasification slag according to different mass ratios, paving the mixture on a self-made firing mold, firing the mixture in a muffle furnace at 800-850 DEG C for 30 minutes, and finally naturally cooling and molding. The high-ash particles are enriched through screening and reselection, the adverse effect of residual carbon combustion on foaming particle bonding is reduced, the characteristics that the high-ash components are rich in glass phase and high-temperature thermal expansion bonding are fully played, and preparation of the formed open-cell foaming material without preforming or additives such as a fluxing agent, a foaming agent and a bonding agent is achieved. The volume density of the material is lower than 0.50 g/cm < 3 >, the compressive strength is up to 2.25 Mpa, the porosity is high, and the material has good filtering performance, is non-toxic and harmless, and can provide a new thought for high-value utilization of coal water slurry gasification slag.
本发明公开的水煤浆气化渣基开孔泡沫材料，由不同粒级高灰气化渣按不同质量比混合后在空气中烧制而成。其制备方法是：首先将水煤浆气化粗渣干燥、筛分和重选，获得大/中/小粒级高灰气化渣，然后将它们按不同质量比混匀铺平在自制烧制模具，再放入马弗炉中在800～850℃下烧制30min，最后自然冷却成型。本发明通过筛分和重选富集了高灰颗粒，降低了残碳燃烧对发泡颗粒粘结的不利影响，充分发挥了高灰组分富含玻璃相和高温热胀粘结的特性，实现无需预成型或助熔剂、发泡剂、粘结剂等外加剂的成型开孔发泡材料制备。该材料体积密度低于0.50g/cm3、抗压强度高达2.25Mpa，孔隙率高，具有良好的过滤性能，且无毒无害，可为水煤浆气化渣的高值化利用提供新思路。
Method for preparing open-cell foam material by using coal water slurry gasification slag as single raw material
一种以水煤浆气化渣为单一原料制备开孔泡沫材料的方法
HATSUMA (author) / LYU FEIYONG (author)
2024-10-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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