Method for treating waste manganese mud generated during production of hydroquinone by aniline process

Abstract

The invention relates to a method for treating waste manganese mud generated during production of hydroquinone by aniline process, wherein the manganese mud contains manganese salt, magnesium salt, iron, silica and a little organic matter; manganese chloride, iron chloride and silica can be extracted from the waste material after treatment; and the waste material and waste residue subjected to the treatment can be used as building materials after being roasted. According to the invention, substances extracted with the method provided by the invention have high purity; the steps are simple; the treated waste materials have no pollution; therefore, the method conforms to the requirements on environmental friendliness.

Description

technical field

[0001] The invention relates to a method for processing waste manganese mud, in particular to a method for processing waste manganese and niobium produced by aniline method to produce hydroquinone. Background technique

[0002] In the process of producing hydroquinone by the aniline method, in order to ensure the yield of hydroquinone, excessive manganese ore powder is used. In the waste manganese mud obtained after the reaction, in addition to part of the manganese ore powder that did not participate in the reaction, there is also Contains magnesium salts, iron powder, silicon dioxide, and a small amount of organic matter.

[0003] The present common method of processing this waste manganese mud is to landfill it, and the landfill processing method has the following deficiencies:

[0004] 1. Valuable elements in manganese mud have not been fully recovered, wasting resources;

[0005] 2. Stacking and storing manganese mud takes up a lot of land resources; ...