Method for measuring content of silicon dioxide in gold ore

A technology of silica and gold mines, applied in the field of analytical chemistry, can solve the problems of no test analysis method, a blank, etc., and achieve the effects of short measurement period, good precision and accuracy, and simple operation

Inactive Publication Date: 2017-11-28
CHANGCHUN GOLD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Usually the content of silicon dioxide in gold ore is relatively high, but there is no test and analysis method for the determination of silicon dioxide in gold ore, so the determination and analysis of silicon dioxide in gold ore is still a blank

Method used

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  • Method for measuring content of silicon dioxide in gold ore
  • Method for measuring content of silicon dioxide in gold ore
  • Method for measuring content of silicon dioxide in gold ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1. After pulverizing and drying the gold ore, accurately weigh 0.2000g sample and put it into a nickel crucible, then add 3g potassium hydroxide and 0.3g potassium nitrate;

[0031] Step 2: Heating the nickel crucible to 300°C in a muffle furnace at a low temperature, keeping the temperature constant for 20 minutes, and then heating up to 550°C for 15 minutes to melt;

[0032] Step 3. Take out the nickel crucible from the muffle furnace, place it for 10 minutes, put the whole nickel crucible into a 400ml plastic cup, add 10mL of boiling water to the nickel crucible, cover the plastic cup with a watch glass, and wait for the nickel crucible to leaching After the reaction is complete, flush all the contents in the nickel crucible with water into a plastic cup, and take out the nickel crucible;

[0033] Step 4: Add 15 mL of nitric acid with a concentration of 1.42 g / mL into the plastic cup, mix well and cool to room temperature;

[0034] Step 5. Add 5mL of potassium ...

Embodiment 2

[0058] A kind of method specific steps of measuring silicon dioxide content in gold ore are as follows:

[0059] Step 1, after pulverizing and drying the gold ore, accurately weigh 0.3000g sample and put it into a nickel crucible, then add 5g potassium hydroxide and 0.5g potassium nitrate;

[0060] Step 2: Heat the nickel crucible to 300°C in a muffle furnace at low temperature, keep the temperature constant for 30 minutes, and then heat up to 650°C for 30 minutes to melt;

[0061] Step 3. Take out the nickel crucible from the muffle furnace, place it for 10 minutes, put the whole nickel crucible into a 400ml plastic cup, add 15mL boiling water to the nickel crucible, cover the plastic cup with a watch glass, and wait for the nickel crucible to leaching After the reaction is complete, flush all the contents in the nickel crucible with water into a plastic cup, and take out the nickel crucible;

[0062]Step 4: Add 20 mL of nitric acid with a concentration of 1.42 g / mL into the...

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Abstract

The invention provides a method for measuring content of silicon dioxide in gold ore and belongs to the field of analytical chemistry. The method comprises steps as follows: after a sample is subjected to alkali fusion, leaching and acidification, potassium chloride and potassium fluoride are added to form potassium fluosilicate precipitates with silicon ions, potassium fluosilicate is hydrolyzed in hot water, hydrofluoric acid with isoequivalent weight is separated out, and content of silicon dioxide is measured by adopting phenolphthalein as an indicator and a sodium hydroxide standard solution for titration. The method for rapidly and accurately measuring the content of silicon dioxide in gold ore is established, the measuring period is short, the operation is simple, degree of precision and degree of accuracy are high, and the blank in the field of analysis for silicon dioxide in gold ore is filled up.

Description

technical field [0001] The invention belongs to the technical field of analytical chemistry, and in particular relates to a method for measuring the silicon dioxide content in gold ore. Background technique [0002] Silicon, as an important part of the earth's crust, exists in all rocks and minerals, especially for some special minerals, the level of silicon content directly affects the quality of minerals, so the content of silicon dioxide plays an important role in the comprehensive evaluation of ores Significance; the census report of geological projects also needs the full analysis data of silicate as an important support, so for geological laboratories, the determination of silica has a large proportion, and whether the appropriate method can be selected directly affects the test time and the accuracy of the results. Usually the content of silicon dioxide in gold ore is relatively high, but there is no test and analysis method for the determination of silicon dioxide i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/16
CPCG01N31/16
Inventor 苏广东刘正红陈永红孟宪伟洪博
Owner CHANGCHUN GOLD RES INST
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