Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing porous ceramic water permeable brick from river bottom sludge and industrial waste salt
The invention discloses a method for preparing a porous ceramic water permeable brick from river bottom sludge and industrial waste salt. Urban river bottom sludge is used as a main raw material, a foaming pore-forming agent is used as a primary pore-forming agent, industrial waste salt with sodium chloride as a main component is used as a secondary pore-forming agent, a closed-cell foam structure with high porosity and fine and uniform pores is directly formed in the material in a sintering process by adopting a foaming method, and then the sodium chloride is removed in a water washing manner; therefore, the original closed-cell foam structure forms an internal communication state due to the loss of sodium chloride, and finally the porous ceramic water permeable brick is obtained. On one hand, urban river bottom sludge and industrial waste salt are harmlessly treated through a high-temperature means and are recycled, and on the other hand, the problem that closed pores are formed in the preparation process of the porous water permeable brick is solved through secondary pore forming. The preparation process is simple in operation process, low in cost, good in water permeability of the product and suitable for industrial large-scale production, and has obvious economic benefits and environmental protection benefits.
本发明公开了一种利用河底淤泥与工业废盐制备多孔陶瓷透水砖的方法。利用城市河底淤泥作为主要原料，以发泡造孔剂作为一级造孔剂，主成分为氯化钠的工业废盐作为二次造孔剂，先采用发泡法直接在烧结过程中于材料内部形成孔隙率高且孔隙细腻均匀的闭孔泡沫结构随后通过水洗的方式除掉氯化钠，从而原来的闭孔泡沫结构因为氯化钠的流失而形成内部连通状态最终得到多孔陶瓷透水砖。本发明一方面通过高温的手段无害化处理了城市河底淤泥及工业废盐并将之资源化利用，另一方面通过二次造孔解决了多孔透水砖制备过程中形成闭孔的问题。本发明制备工艺操作过程简单，成本低廉，产品透水性能好，适于工业化大规模生产，具有明显的经济效益和环保效益。
Method for preparing porous ceramic water permeable brick from river bottom sludge and industrial waste salt
The invention discloses a method for preparing a porous ceramic water permeable brick from river bottom sludge and industrial waste salt. Urban river bottom sludge is used as a main raw material, a foaming pore-forming agent is used as a primary pore-forming agent, industrial waste salt with sodium chloride as a main component is used as a secondary pore-forming agent, a closed-cell foam structure with high porosity and fine and uniform pores is directly formed in the material in a sintering process by adopting a foaming method, and then the sodium chloride is removed in a water washing manner; therefore, the original closed-cell foam structure forms an internal communication state due to the loss of sodium chloride, and finally the porous ceramic water permeable brick is obtained. On one hand, urban river bottom sludge and industrial waste salt are harmlessly treated through a high-temperature means and are recycled, and on the other hand, the problem that closed pores are formed in the preparation process of the porous water permeable brick is solved through secondary pore forming. The preparation process is simple in operation process, low in cost, good in water permeability of the product and suitable for industrial large-scale production, and has obvious economic benefits and environmental protection benefits.
本发明公开了一种利用河底淤泥与工业废盐制备多孔陶瓷透水砖的方法。利用城市河底淤泥作为主要原料，以发泡造孔剂作为一级造孔剂，主成分为氯化钠的工业废盐作为二次造孔剂，先采用发泡法直接在烧结过程中于材料内部形成孔隙率高且孔隙细腻均匀的闭孔泡沫结构随后通过水洗的方式除掉氯化钠，从而原来的闭孔泡沫结构因为氯化钠的流失而形成内部连通状态最终得到多孔陶瓷透水砖。本发明一方面通过高温的手段无害化处理了城市河底淤泥及工业废盐并将之资源化利用，另一方面通过二次造孔解决了多孔透水砖制备过程中形成闭孔的问题。本发明制备工艺操作过程简单，成本低廉，产品透水性能好，适于工业化大规模生产，具有明显的经济效益和环保效益。
Method for preparing porous ceramic water permeable brick from river bottom sludge and industrial waste salt
一种利用河底淤泥与工业废盐制备多孔陶瓷透水砖的方法
CHANG YING (Autor:in) / HE XING (Autor:in) / WANG LI (Autor:in) / HUANG HAISHENG (Autor:in) / NIE ZEXIN (Autor:in) / QIN JI (Autor:in) / JIANG JIAYI (Autor:in) / XIE HONGXIN (Autor:in) / HU YUE (Autor:in)
25.05.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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