How is low cost manganese manganese sulfate formulated?

It is only known that potassium permanganate can be prepared by reducing it under acidic conditions, such as ethylene + sulfuric acid + potassium permanganate, etc.

By: dasyou - Magician Level 4 7-25 12:24

Study on the optimal process conditions for the preparation of manganese sulfate.

the optimum technology of preparing manganese sulfate

Yang Xinke Abstract: The direct leaching of pyromanganese, pyrite and sulfuric acid to prepare manganese sulfate was experimentally studied, and the optimal process conditions were obtained. When the leaching conditions are pyrolite, pyrite, sulfuric acid is 1, the leaching temperature is 96, the leaching time is 7h, and the solid-liquid ratio is 1 5, the leaching rate of manganese can reach The process has less energy consumption and low production cost.

The advantages of high rate of manganese.

CLC Number: Document Identification Code: A

**Project: Shaanxi Provincial Education Commission Natural Science ** Funded Project (

About author:YANG Xinke (1950-), male, from Fufeng, Shaanxi, associate professor.

Author Affilications:YANG Xinke (Department of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721007, Shaanxi).

2 Ning Xiaosheng. Purification electrowinning of manganese oxide direct reduction leaching solution[J].China Manganese Industry,1996,14(3):32-34

Received: April 28, 2001.

Publication date: 28 August 2001.

Laboratory Method:

Method 1: Put the excess black manganese dioxide solid into a quantitative sulfuric acid solution, and the black solid will immediately dissolve and produce a red aqueous solution, which is manganese(II) sulfate solution. The solution contains black impurities (carbon or manganese dioxide), which can be filtered to obtain a pure manganese(II) sulfate solution.

The relative atomic mass of manganese.

is 55 and the molecular weight of manganese sulfate is 151.

Calculated as 1 L solution.

That is, milligrams of manganese sulfate are required.

Accurately weigh manganese sulfate solids, add an appropriate amount of water to dissolve thoroughly, and transfer to a milliliter volumetric flask.

Shabu wash beaker. The liquid continues to be transferred to a volumetric flask, diluted to the scale, and shaken well for later use.

moles per liter (1 5 potassium permanganate).

c(kmno4)=

mol l is taken.

KMNO4 (mass), dissolve in a beaker and transfer to a 1 L volumetric flask.

The same goes for moles per liter (1 2 sodium oxalate).

n(c2h2o4)=

Same as above.

Preparation and calibration of KMNO4 solution.

1. Prepared KMNO4 solution 300ml

Weigh accurately. KMno4 is dissolved in 300ml of deionized water, boiled for 30 minutes, cooled and transferred to a dry brown reagent bottle, left for a week, filtered and set aside.

2. Calibration of KMno4 solution.

Na2C2O4 is commonly used for calibration of KMno4 solution, which is easy to purify and stable in nature. In a hot, acidic medium, KMno4 reacts with Na2C2O4 as follows:

2mno4-

5c2o42-

16h+=2mn2+

10co28h2o

The indicator during calibration is the KMno4 solution itself, and when the KMNO4 solution to be calibrated is titrated until the solution is pink, and the color does not fade within 30 seconds, it is the end point.

Summary. How potassium permanganate is formulated into potassium permanganate.

Hello <>

This is a dilution issue<>

You tell me how to dilute it.

How much? What was the original volume.

Oooh, okay.

Whether it's milliliters or liters.

mol l is not, I asked the volume unit at the beginning.

It should be milliliters.

ml column equations according to the amount of the substance is constant.

You can find the volume of water<>

Potassium permanganate plus 770ml of water?

Without a given basic unit, assuming c(kmNO4) = , titration analysis requires the consumption of a standard solution volume in the range of 20-40 ml to titrate the reaction

5na2c2o4

2kmno4

16h+2mn^2+

10co28h2o

m m = In the same way, when v = 40ml, m =

When consuming a standard solution in the range of 20-40 ml, weigh the sample range in grams.

Add potassium permanganate in a 1L volumetric flask, and then fill it up to the scale with water, that is, you want a macro solution, if you don't have equipment, you can only estimate, the error is relatively large. For example, if you want to make your own little to disinfect, you can take potassium permanganate, which is about the size of a soybean grain, and then about 500ml of water at home (you should have some kind of cup Qiye or something at home, right?). This should be about the same, and the solution that covers the child's eyes is light purple after preparation.

Hypothesis. kmno4. Formula.

is m (kmno4), then assuming that the volume of my solution is 1L, then the mass of the solute that should be applied to Yu Jian is grams, and it is enough to dissolve these things into 1L of water.

1 5 The molar mass of potassium permanganate is that if you want to configure 1 liter, you need to weigh x grams of potassium permanganate x =

Weigh grams of potassium permanganate and dissolve them in water, dilute to 1 liter and shake well.