Preparation method of normal-temperature iron oxide desulfurizing agent based on manganese metal liquid preparation

Abstract

The invention discloses a preparation method of a normal-temperature iron oxide desulfurizing agent based on manganese metal liquid preparation, and relates to the technical field of industrial wastetreatment. According to the technical scheme, the preparation method is characterized by comprising the following steps that S1, manganese carbonate ore is crushed and then put into a chemical combination reactor for a chemical combination reaction, and ore pulp is prepared; S2, solid-liquid separation is conducted on the ore pulp; S3, filtrate obtained after solid-liquid separation is purified; S4, a purified solution is subjected to solid-liquid separation, and a separated iron-containing filter cake and alkaline substances are mixed and then crushed and stirred; S5, powerful stirring and mixing are conducted, and a mixed material is obtained; S6, closed aging is conducted; S7, a granulator is adopted for granulation; and S8, natural airing or low-temperature drying is conducted, and thenormal-temperature iron oxide desulfurizing agent is prepared. The production cost of the iron oxide desulfurizing agent can be greatly reduced, the production process is simple, the produced and prepared desulfurizing agent is high in effective component content and good in activity, and the preparation method can be applied to comprehensive utilization of iron removal slag in other hydrometallurgy industries.

Description

technical field [0001] The invention relates to the technical field of industrial waste treatment, more specifically, it relates to a preparation method of a normal temperature iron oxide desulfurizer based on metal manganese liquid. Background technique [0002] The production of electrolytic manganese metal is a typical hydrometallurgy process. Since manganese ore is often associated with iron compounds, in the leaching stage, the manganese ore reacts with sulfuric acid, and the manganese in the ore enters the solution in the form of manganese sulfate, and the iron in the ore also varies. In order to obtain high-quality electrolytic manganese metal products and high current efficiency, iron ions must be removed from the leaching solution before entering the electrolysis. Generally, TFe≤0.5mg / l is required. [0003] In 1849, the British Laming and Hills proposed to use hydrated iron oxide as a desulfurizer to remove H from gas. 2 S, In the middle of the 19th century, the B...

AI Technical Summary

Problems solved by technology

[0004] At present, the production process of electrolytic manganese metal in China is to complete the processes of acid leaching of manganese ore, neutralization of residual acid, oxidation of ferrous ions, and hydrolysis and precipitation of ferric ions in the same compound reactor, followed by solid-liquid separation and hydrolysis and precipitation of ferric ions. Produced Fe(OH) 3 The precipitation is mixed with a large amount of acid leaching manganese slag, which not only increases the amount of slag, but also is not conducive to the comprehensive utilization of useful components of electrolytic manganese slag

Images