Preparation method of fibrous inorganic mineral gel

Abstract

The invention discloses a preparation method of fibrous inorganic mineral gel. The method is characterized by comprising the following steps: fibrous clay mineral is ground to 120-200 meshes, isopropanol is added, and the mixture is soaked for 4-6 h, wherein isopropanol accounts for 1.5-2 times of the weight of clay; wet grinding or counter roller extruding is performed for 3-5 times, and clay-contained isopropanol suspension with the concentration of 10-50wt% is prepared through stirring; lower-layer non-clay impurities are removed, a lithiation agent is added, stirring is performed for 30-60 min at the stirring speed of 5,000-10,000 rpm, the lithiation agent adopts one of lithium chloride, lithium nitrate and lithium hydroxide, and the adding amount accounts for 2%-10% of the weight of dry clay; and pulp is dried centrifugally, and the fibrous inorganic mineral gel is obtained. The preparation method of the fibrous inorganic mineral gel is simple and safe, the process is easy to control, a product has high purity, high brightness and viscosity and is easy to disperse, raw materials are easy to obtain, the added dispersing agent and lithiation agent are non-toxic and harmless, and mass production is facilitated.

Description

technical field [0001] The invention relates to a preparation method of fiber-type clay gel, which belongs to the technical field of clay deep processing. Background technique [0002] At present, mineral inorganic gel is mainly prepared by deep processing of high-purity bentonite, and is widely used in daily chemical industry, papermaking, medicine and other fields. [0003] Fibrous clay minerals such as attapulgite clay and sepiolite can be dispersed in water to form a three-dimensional network structure similar to a "wood pile", so they have strong gel-forming properties. Compared with bentonite, this type of mineral has better salt resistance and has obvious advantages. [0004] Natural inorganic mineral gels are often prepared with water as a solvent through purification, modification and gelation. Slurry with water, due to viscosity constraints, the slurry concentration is small, the production energy consumption is high and the efficiency is low, and subsequent dehy...

AI Technical Summary

Problems solved by technology

Slurry is made with water, the concentration of the slurry is low due to the restriction of the viscosity, the production energy consumption is high and the efficiency is low, and the subsequent dehydration and drying lead to severe hard agglomeration, which greatly reduces the effect of nano-sizing in the early stage, and the quality of the obtained gel product is significantly reduced