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Yingkou Hongwei Agricultural Technology Developmen

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Address: Nanlou Economic Development Zone, Dashiqiao, Yingkou, Liaoning Province

How to improve the purity of magnesium sulfate monohydrate


In the production of magnesium sulfate monohydrate, everyone is more concerned about its purity. Generally, it is necessary to take some professional operation methods to produce chemicals with better purity. The influence of purity is often caused by foreign invasive impurities. So, what everyone needs to do is to purify and remove impurities. Here's how to teach everyone.

1. First, the purity of the magnesium sulfate monohydrate raw material must be improved, and high purity raw materials must be purchased or prepared. If the purity of the raw materials is not high or even contains impurities, then the quality of the finished product can be imagined that the purity will not be high.



2. Secondly, do not mix other substances, including gases, in the reaction process to prevent the gases from oxidizing the substances in the reaction process and even causing other reactions.

3. There is filtration, purification and other operations after the reaction as needed. Take magnesium sulfate monohydrate as an example, add it to a hot distilled water tank containing 80 ° C to 90 ° C, stir while heating, dissolve it to a mass concentration of 1.21 g / cm3, remove impurities such as arsenic and heavy metals with alkali, and decolorize it with activated carbon after filtering. , Concentrated to a mass concentration of 1.370g / cm3 ~ 1.384g / cm3, cooled and crystallized, separated and washed when the temperature reaches 25 ° C ~ 15 ° C, dried in a vibrating fluidized bed at 50 ° C ~ 55 ° C, based on water quality, impurity removal, Different levels of discoloration and washing result in different grades.


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