Preparation method and process of Oxalic Acid Dihydrate

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Oxalic Acid Dihydrate is a chemical feedstock that is widely used in ceramics, stripping, photography, pharmaceuticals and other fields. It is stable at room temperature and pressure, easy to preserve, and can be easily converted to ferrous oxide for further utilization under accessible co

Oxalic Acid Dihydrate Background Technology:

Oxalic Acid Dihydrate is a chemical feedstock that is widely used in ceramics, stripping, photography, pharmaceuticals and other fields. It is stable at room temperature and pressure, easy to preserve, and can be easily converted to ferrous oxide for further utilization under accessible conditions.

 

Most of the available ferrous oxalate is ferrous sulfate or ferrous chloride, which are easily oxidized and relatively expensive, leading to the high production cost of Oxalic Acid Dihydrate.

 

Preparation method of Oxalic Acid Dihydrate Technical implementation elements:

The purpose of the invention is to provide a preparation method for Oxalic Acid Dihydrate. The preparation method uses magnetite concentrate as the main raw material and ascorbic Acid as the reducing agent, which reduces the production cost of Oxalic Acid Dihydrate and has the advantages of simple preparation process.

In order to realize the purpose of the invention, the invention provides the following technical scheme:

The invention provides a preparation method for Oxalic Acid Dihydrate, including the following steps:

After acid leaching of magnetite concentrate in concentrated hydrochloric acid, acid leaching solution was obtained by solid-liquid separation. The acid leaching process maintains the reaction liquid in a boiling state;

The acid leaching solution is mixed with ascorbic acid for reduction reaction to obtain ferrous ion aqueous solution;

The ferrous ion aqueous solution is mixed with a compound containing oxalate and precipitation reaction is performed to obtain Oxalic Acid Dihydrate crude product.

The crude Oxalic Acid Dihydrate is washed and dried successively to obtain Oxalic Acid Dihydrate.

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