Process for separating magnesium sulfate monohydrate from magnesium-containing solution and equipment thereof

Abstract

A process and equipment for separating magnesium sulfate monohydrate in magnesium-containing solution, it relates to a chemical separation and extraction of magnesium sulfate monohydrate equipment and process, in particular to a process for separating magnesium sulfate monohydrate in magnesium-containing solution and its equipment. The feed port of the high-temperature and low-pressure crystallization tank is connected to the discharge port of the filter, and the filter is provided with a compressed air inlet. It is connected with heat conduction oil filter and heat conduction oil circulation pump, and the precipitation outlet of the filter is connected to the rotary drying furnace through an automatic centrifuge. The present invention is a method for separating zinc and magnesium based on the different solubility of zinc sulfate and magnesium sulfate in zinc sulfate solution at different temperatures and pressures. The solubility of zinc sulfate changes when the temperature and pressure change. Not much, and magnesium sulfate has a high solubility at low temperature and normal pressure, so this special property of magnesium sulfate is used. The invention makes it possible to apply the magnesium-containing solution in the industries of electrolytic zinc, zinc sulfate, zinc carbonate, active zinc oxide, sodium sulfate, etc., and accurately and efficiently separate the magnesium sulfate monohydrate.

Description

technical field [0001] The invention relates to a device and a process for chemically separating and extracting magnesium sulfate monohydrate, in particular to a process and equipment for separating magnesium sulfate monohydrate from a solution containing magnesium. Background technique [0002] At present, in the electrolytic zinc, zinc sulfate, zinc carbonate, active zinc oxide, sodium sulfate and other industries, the quality of the main product is generally affected by the existence of magnesium sulfate, and the production process is deteriorated due to the accumulation of magnesium ions in the production process. , As a result, production cannot be carried out normally, which seriously restricts the development of this industry. However, there is currently no particularly effective method for the separation of magnesium ions, especially the separation of magnesium ions in zinc sulfate solution is more difficult. Contents of the invention [0003] The object of the pr...

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Problems solved by technology

[0002] At present, in the electrolytic zinc, zinc sulfate, zinc carbonate, active zinc oxide, sodium sulfate and other industries, the quality of the main product is generally affected by the existence of magnesium sulfate, and the production process is deteriorated due to the accumulation of magnesium ions in the production process. , resulting in production can not be carried out normally, seriously restricting the development of this industry

However, there is currently no particularly effective method for the separation of magnesium ions, especially it is more difficult to separate magnesium ions in zinc sulfate solution.

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