Rapid test method for clay content of attapulgite in different batches from the same ore source

Abstract

The invention discloses a method for rapidly examining the content of attapulgite clay in different batches of a same mineral source. The method comprises the following steps: crushing a sample, and milling to prepare a raw mineral sample, fully dispersing and purifying the milled raw mineral sample by using a dilute sodium hexametaphosphate solution to obtain a purified sample, respectively titrating by using a methylene blue standard solution with filter paper as an external indicator to measure the methylene blue consumption volumes of the raw attapulgite sample and the purified attapulgite sample, and calculating by converting according to a formula and qualified mineral sample data in order to obtain the content of attapulgite in the raw sample. The method is convenient for examining whether adulteration exists or not, does not need special expensive examination apparatuses, and saves much cost.

Description

technical field [0001] The invention relates to a method for analyzing the content of silicate clay minerals, in particular to a rapid test method for the content of attapulgite clay in different batches of the same ore source. Background technique [0002] Attapulgite clay refers to a kind of clay mine with attapulgite as the main component. It is mainly produced in Xuyi, Liuhe, Jiangsu and Jiashan, Anhui. A number of ore deposits (points) have been discovered in other places. Attapulgite, also known as palygorskite or palygorskite, is a layered chain structure of hydrous magnesium-aluminosilicate clay minerals. Its ideal molecular formula is: (Mg, Al, Fe) 5 Si 8 o 20 (HO) 2 (OH 2 ) 4 4H 2 O, the theoretical chemical composition is: SiO 2 56.96%; (Mg, Al, Fe)O23.83%; H 2 O19.21%. Due to the porous interior of attapulgite and the large specific surface, most of the cations, water molecules and organic molecules of a certain size can be directly adsorbed into the po...

AI Technical Summary

Problems solved by technology

[0004] The main mineral components of attapulgite clay are attapulgite, montmorillonite, dolomite, hydromica, opal, quartz, etc. Although X-ray diffraction and infrared absorption spectroscopy can distinguish attapulgite from other minerals according to the characteristic signs Carry out qualitative and quantitative analysis of attapulgite minerals, but using this method for each detection requires the use of expensive professional precision instruments, which are difficult for processing and using companies to purchase, use and maintain; in addition, X-ray diffraction and infrared absorption spectroscopy The process of the method is cumbersome and requires professional analysts, which is not conducive to routine batch inspection and analysis of attapulgite ore processing enterprises or users who use attapulgite as a constant, and is also not conducive to rapid judgment and analysis of attapulgite and attapulgite. It is used when the content