Organic modified bentonite and preparation method thereof

Abstract

The invention discloses an organic modified bentonite and a preparation method thereof, and relates to an organic mineral and a preparation method thereof. 8-hydroxyquinoline is used as a modifying agent to modify calcium-based bentonite so as to prepare the modified bentonite-8-hydroxyquinoline modified bentonite. The preparation method for the 8- hydroxyquinoline modified bentonite comprises the following steps: firstly, processing raw soil; then, preparing solution of 8-hydroxyquinoline sodium hydroxide; and finally preparing the 8-hydroxyquinoline modified bentonite. The preparation method for the 8-hydroxyquinoline modified soil particularly comprises the following steps: adding distilled water into a certain amount of the bentonite, and stirring the mixture to prepare 15 percent soil suspension; adding 0.2 to 0.3 g / L solution of 8-hydroxyquinoline sodium hydroxide into the suspension for uniform mixing,; and stirring and heating for 60 minutes in a water bath, filtering, drying, grinding, and sifting through a 0.096 mm sieve to prepare the 8-hydroxyquinoline modified soil. The organic modified bentonite serving as an adhesive, a thickener, a purification decolorant, a catalyst and the like has quite wide application prospect in the fields of metallurgy, mechanical foundry, drilling, petrochemical engineering, agriculture, forestry, animal husbandry and the like.

Description

technical field [0001] The invention relates to an organic mineral and a preparation method thereof, in particular to an organic modified bentonite and a preparation method thereof. Background technique [0002] Bentonite is a clay mineral widely distributed in nature and belongs to non-metallic minerals. China's bentonite mineral resources are very rich, the reserves rank first in the world, accounting for 60% of the world's total, the estimated resources are more than 7 billion tons, and it is characterized by wide distribution, shallow burial, easy mining and complete varieties. Bentonite and its purified and modified products have some superior characteristics to varying degrees. These characteristics mainly include swelling, hydrophilicity (or lipophilicity, such as organic bentonite), adsorption, cation exchange, catalytic activity, dispersibility, Suspension, adhesion, thixotropy, stability, non-toxic. With the development of science and technology, people have grad...

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Problems solved by technology

However, in natural bentonite, due to the extremely strong hydrophilicity of the surface silicon-oxygen structure and the hydrolysis of a large number of exchangeable cations between the layers, there is usually a thin water film on the surface, which limits its application in aqueous solutions; in addition, The solid-liquid separation speed of bentonite is slow, and the dehydration effect of flocs is poor, which also affects its practical application.

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