The application of zinc sulphate heptahydrate in mining

Zinc sulfate is a widely applied chemical in floatation minerals separation, which is generally to separate copper. It’s well known to us that zinc sulfate includes zinc sulfate monohydrate and zinc sulfate heptahydrate, which both can be used in mineral separation. In worldwide scale, the customers who have mineral separation inquiry to us usually choose zinc sulfate heptahydrate instead of zinc sulfate monohydrate. Why is that?

There are two reasons: 1. the price of zinc sulfate heptahydrate is much lower than that of zinc sulfate monohydrate, which could greatly reduce cost; 2. as a kind of mineral flotation reagent, zinc sulfate heptahydrate is easier soluble in water than zinc sulfate monohydrate.

Product Specification of zinc sulfate heptahydrate are as follows:

Molecular Formula: ZnSO4.7H2O

EINECS NO.: 231-793-3

CAS No.: 7446-20-0

HS Code :  28332930

Appearance:  White Crystalline powder or Granular

Grade:  fertilizer grade   industry grade.

SPECIFICATION

Purity: 97%min

Zinc: 21.5%min

Packing:  25kgs/bag or 1000-1350kgs in bulk bag

Container Load: 25-27MT/FCL

Manufacture: RECH CHEMICAL CO. LTD

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The difference between zinc sulphate monohydrate and zinc sulphate heptahydrate

Zinc sulphate monohydrate and zinc sulphte heptahydrate are belongs to the zinc compound. What the difference between them? Rech Chemical co. ltd would like to share the following information for you.

First, appearance difference: zinc sulphate monohydrate is a white fluency powder; zinc sulphate heptahydrate is white crystalline powder. As for zinc sulphate granular, monohydrate or hetpahydrate cannot tell the difference from appearance, only by test the zinc content know the difference.

Second, zinc content difference: zinc content in zinc sulphate monohydrate powder is 35%min, while zinc content for heptahydrate powder is 21.5%min. As for zinc sulphate granular: zinc content for monohydrate is 33%min, for heptahydrate granular is 21%min. zinc granular is made by zinc powder through Pan Granulation, therefire, zinc content in granular is lower than powder.

Third, Water solubility difference: In general, zinc sulphate heptahydrate is easier to soluble in water because of contains seven water moistures. But from the inner control of production, the water insoluble matter of monohydrate and heptahydrate is both below than 0.05%. Both zinc sulphate monohydrate and heptahydrate can be used as a water-soluble fertilizer, depending on the method you are using.

Forth, the price difference: generally, the price of zinc sulphate powder is based on the zinc content of the product. The higher of zinc content, the higher of the price. So the monohydrate powder is much more expensive than heptahydrate. While the price of granular is higher than powder because Pan Granulation.

Rech Chemical Co. LTD is manufacturer of zinc sulfate.

Website: http://www.rqsulfates.com