Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for accurately and efficiently testing lead content in ore

A determination method and technology for lead content, which are applied in chemical analysis, measuring device, color/spectral property measurement by titration method, etc., can solve the problems of unsuitability for mass production, complex method, low determination result, etc., and achieve the reduction of steps. , the effect of simplifying the experimental procedure and convenient operation

Inactive Publication Date: 2018-09-07
CHANGCHUN GOLD RES INST
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides an accurate and efficient method for determining the lead content in ore, so as to solve the existing problems of complicated methods, unsuitable for mass production and low measurement results

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for accurately and efficiently testing lead content in ore
  • Method for accurately and efficiently testing lead content in ore
  • Method for accurately and efficiently testing lead content in ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Include the following steps:

[0038] (1) Accurately weigh 0.28g sample, record it as m, place it in a 400mL beaker, add 20mL saturated nitric acid-potassium chlorate solution, cover with a watch glass, and heat on an electric furnace until the sample is completely digested;

[0039] (2) Take off the beaker to cool, add 8mL of concentrated sulfuric acid to the beaker, continue to heat on the electric stove until thick white smoke is emitted for 2 minutes, take off the beaker to cool, slowly add water to 80mL, and heat on the electric stove to slightly boil for 8min;

[0040] (3) Take off the beaker, cool for 10 minutes, add 5mL of absolute ethanol, shake well, and let stand for 1 hour;

[0041] (4), use double-layer filter paper to filter the precipitation, accept the filtrate with a cleaned beaker, after the transfer is complete, wash the beaker and the precipitation with sulfuric acid lotion for several times, place the filtrate on the electric furnace and evaporate i...

Embodiment 2

[0067] Include the following steps:

[0068] (1) Accurately weigh 0.29g sample, record it as m, place it in a 400mL beaker, add 22.5mL saturated nitric acid-potassium chlorate solution, cover with a watch glass, and heat it on an electric furnace until the sample is completely digested;

[0069] (2) Take off the beaker to cool, add 9mL of concentrated sulfuric acid to the beaker, continue to heat on the electric stove until thick white smoke is emitted for 2.5 minutes, take off the beaker to cool, slowly add water to 85mL, and heat on the electric stove to slightly boil for 9min;

[0070] (3) Remove the beaker, cool for 15 minutes, add 5.5mL of absolute ethanol, shake well, and let it stand for 1.25 hours;

[0071] (4), use double-layer filter paper to filter the precipitation, accept the filtrate with a cleaned beaker, after the transfer is complete, wash the beaker and the precipitation with sulfuric acid lotion for several times, place the filtrate on the electric furnace a...

Embodiment 3

[0097] Include the following steps:

[0098] (1) Accurately weigh 0.30 g of sample, record it as m, place it in a 400 mL beaker, add 25 mL of saturated nitric acid-potassium chlorate solution, cover with a watch glass, and heat it on an electric furnace until the sample is completely digested;

[0099] (2) Take off the beaker to cool, add 10mL of concentrated sulfuric acid to the beaker, continue to heat on the electric furnace until thick white smoke is emitted for 3 minutes, remove the beaker to cool, slowly add water to 90mL, and heat on the electric furnace to slightly boil for 10min;

[0100] (3) Remove the beaker, cool for 20 minutes, add 6mL of absolute ethanol, shake well, and let it stand for 1.5 hours;

[0101] (4), use double-layer filter paper to filter the precipitation, accept the filtrate with a cleaned beaker, after the transfer is complete, wash the beaker and the precipitation with sulfuric acid lotion for several times, place the filtrate on the electric fur...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for accurately and efficiently testing the lead content in ore, and belongs to a method of measuring the lead content in the ore. A nitric acid-potassium chlorate saturated solution is used for dissolving a sample; lead in the solution is enabled to form lead sulfate precipitates by using concentrated sulfuric acid; after the filtering, lead is separated out; xylenol orange is used as an indicating agent; an EDTA standard solution is used for titration, so that the main quantity lead content can be obtained; lead sulfate is slight soluble; a small amount of lead is contained in filter liquid; the recovery is needed for lead content determination; meanwhile, filtered and separated precipitates also contain a small amount of parts insoluble to the lead acetate; the part also contains a small amount of lead; basic solvents are used for dissolving lead in undissolved substances; two lead-containing systems in filter liquid and filter slag are merged; an atomic absorption instrument is used for measuring the total lead content in the two parts; the lead content is added to the main quantity lead content; the total lead content in the sample can be obtained. The unnecessary steps can be reduced; the experiment accuracy is improved; the experiment procedure is simplified; the operation is convenient; the batch operation of samples can be realized; thework efficiency is effectively improved.

Description

technical field [0001] The invention relates to a method for determining lead content in ores, in particular to a method for determining lead content in gold concentrates and lead concentrates with a lead content greater than 50%. Background technique [0002] In the national standard, the determination range of lead content in gold concentrate is less than 50%. The statistical analysis of big data shows that the result of using this method is obviously low when the lead content is higher than 50%. Although the measurement range of lead content in lead concentrate includes 50% Above, but the analysis steps are more complex and lengthy, not suitable for mass production. Contents of the invention [0003] The invention provides an accurate and efficient method for determining the lead content in ore, so as to solve the existing problems that the method is complicated, not suitable for mass production, and the measurement result is relatively low. [0004] The technical sche...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N31/16G01N21/31
CPCG01N21/3103G01N31/16
Inventor 高振广刘正红颜凯
Owner CHANGCHUN GOLD RES INST