Bentonite modified by surface active agent and preparation method of bentonite
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ANHUI PUYUAN SEPARATION MACHINERY MFG CO LTD
- Publication Date
- 2014-10-29
Abstract
Description
technical field
[0001] The invention relates to the field of industrial fillers, in particular to a surfactant-modified bentonite and a preparation method thereof. Background technique
[0002] Bentonite is a clay mineral mainly composed of montmorillonite. It is a type of 2:1 natural layered silicate mineral. Its structural units are Si-O tetrahedrons arranged in two dimensions and Al (or Mg)-O-OH octahedral sheets. In my country, bentonite mineral resources are very rich and widely distributed, and its reserves rank among the top in the world. Due to the presence of Si-OH on the surface of montmorillonite, heavy metal ions can be fixed between the montmorillonite layers through coordination or co-precipitation. Therefore, as an adsorbent, natural montmorillonite itself has a certain adsorption capacity for heavy metal ions, but the adsorption performance is poor. Therefore, the study on the modification of bentonite is an important work. Contents of the invention [0...