Carboxymethyl starch inhibitor for reverse flotation of hematite

Abstract

The invention provides a carboxymethyl starch inhibitor for reverse flotation of hematite. The carboxymethyl starch inhibitor is characterized in that water with the weight being 8 times to 10 times the weight of carboxymethyl starch and the carboxymethyl starch are sequentially added to a dispensing barrel at a room temperature, the water and the carboxymethyl starch are stirred for one hour, then, water is added for preparing a solution which is composed of, by weight, 1.5% to 3.0% of the carboxymethyl starch, and the carboxymethyl starch inhibitor is obtained. Compared with a frequently-used corn starch inhibitor, the carboxymethyl starch inhibitor has the advantages that the consumption of the carboxymethyl starch inhibitor is lowered by 44% to 50%, when the carboxymethyl starch inhibitor is prepared at the room temperature, the preparation process is simple, the energy consumption is reduced, the inhibiting effect is good, and the screening index is beneficially improved, and the carboxymethyl starch inhibitor is easy to store and not prone to deterioration when used at the room temperature.

Description

technical field [0001] The invention relates to a carboxymethyl starch inhibitor used for reverse flotation of hematite. Background technique [0002] Flotation is an important method of mineral separation. Generally, it is necessary to grind the minerals and add mineral dressing agents for separation. In the reverse flotation process of hematite, corn starch is generally used as an inhibitor of iron minerals. However, in the process of use, the preparation of cornstarch is more complicated, and it needs to add sodium hydroxide, add water and heat to causticize. The preparation process of starch solution is a waste of energy, and the properties of the prepared starch solution are not very stable, especially in summer high temperature season, the storage time should not be too long, otherwise it is easy to rot, lose the proper inhibitory effect, and affect the selection index. [0003] Carboxymethyl starch is an important modified starch, which is widely used in oil drillin...

AI Technical Summary

Problems solved by technology

However, in the process of use, the preparation of cornstarch is more complicated, and it is necessary to add sodium hydroxide, add water and heat to causticize

The preparation process of starch solution is a waste of energy, and the properties of the prepared starch solution are not very stable, especially in the summer high temperature season, the storage time should not be too long, otherwise it is easy to spoil, lose the proper inhibitory effect, and affect the selection index

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