Preparative technique for bentonite particles

Abstract

The invention discloses a preparative technique for bentonite particles. Powdery sodium bentonite is used as raw materials, appropriate sludge is added, after being mixed evenly, the raw materials and the sludge are added with water, stirred to an appropriate viscosity and squeezed into small particles, and the small particles are roasted in a high temperature after being dried. Due to the facts that crystal water in the particles is lost during the roasting process and organics of the sludge are burned, a mass of micro pores are formed, so that multi-hole sludge bentonite particles are prepared, the aim of granulation of the bentonite is achieved, the application fields of the bentonite in water treatment are greatly broadened, meanwhile, the pollution problem caused by the sludge is solved, and resource utilization of the sludge is achieved.

Description

technical field [0001] The invention belongs to the field of environmental protection, and more specifically relates to a technology for preparing bentonite particles. Background technique [0002] Bentonite is a clay mineral with montmorillonite as the main mineral component. It not only has good adsorption and ion exchange performance, but also has abundant resources and low price. Compared with other adsorbents with high cost and energy consumption such as activated carbon, but Powdered bentonite has good suspension and dispersibility, has swelling property, and forms mud when it meets water, with high turbidity and poor permeability. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art, and provide a new adsorbent product and preparation method. The bentonite particles produced by the technical proposal not only have good decolorization performance. And it has better mechanical strength and more particle p...

AI Technical Summary

Problems solved by technology

During the roasting process, due to the loss of crystallization water inside the particles and the combustion of organic matter in the sludge itself, a large number of micropores are formed, thereby making porous sludge bentonite particles, whic...