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Method for determining content of large flaky graphite in flaky graphite ore

A technology of flake graphite and large flakes, which is applied in measuring devices, preparation and sampling of samples for testing, etc., can solve problems such as damage of graphite flakes, and achieve the effect of high purity

Inactive Publication Date: 2016-08-03
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main difficulty in directly measuring the large scale graphite content in ore is the crushing of the ore. It is necessary to crush the ore to a finer particle size to facilitate the separation and measurement of graphite and gangue minerals, and not to damage the graphite scales. Currently, there are Conventional methods are difficult to solve this problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Flake graphite ore, graphite grade 18.76%, main gangue minerals are quartz, feldspar, muscovite, biotite, diopside, tremolite, calcite, pyrite and so on. Select a total of 167.09 grams of 40mm~100mm graphite ore, dry it in an oven at 105°C, put it in a high-temperature furnace, heat it to 600°C with carbon dioxide gas, keep it warm for 7 minutes, take it out, quickly put it in water, take it out The cooled ore block shall be manually crushed to less than 3mm, dried in an oven, put into a 1000ml polytetrafluoroethylene beaker, add 400ml of mixed acid (hydrofluoric acid: hydrochloric acid: nitric acid = 4:3:1), and place in a ventilated In the cupboard, heat and stir with a magnetic heating stirrer for 3 hours, let it stand for 20 minutes, pour out the supernatant; then add 300ml of mixed acid, digest for 4 hours, pour out the supernatant after standing still; add 100ml of mixed acid, After digestion for 2 hours, filter and wash together with the supernatant poured out be...

Embodiment 2

[0020] Flake graphite ore, graphite grade 12.53%, main gangue minerals are quartz, feldspar, hornblende, biotite, chlorite, limonite, garnet, etc. Select a total of 255.21 grams of 40mm~100mm graphite ore, dry it in an oven at 105°C, put it in a high-temperature furnace, heat it to 650°C with carbon dioxide gas, keep it warm for 6 minutes, take it out, put it in water quickly, and take it out The cooled ore blocks are manually crushed to less than 3mm, dried in an oven, put into a 1000ml polytetrafluoroethylene beaker, add 600ml of mixed acid (hydrofluoric acid: hydrochloric acid: nitric acid = 4:3:1), and place in a ventilated In the cupboard, heat and stir with a magnetic heating stirrer for 4 hours, let it stand for 20 minutes, pour out the supernatant; then add 500ml of mixed acid, digest for 4 hours, pour out the supernatant after standing still; add 150ml of mixed acid, After digesting for 2 hours, filter and wash together with the supernatant poured out before, and dry ...

Embodiment 3

[0022] Flake graphite ore, graphite grade 10.84%, gangue minerals are mainly quartz, microplagioclase, plagioclase, tremolite, mica, zoisite, gypsum, limonite, pyrite and so on. Select a total of 267.72 grams of 40mm~100mm graphite ore blocks, dry them in an oven at 105°C, put them in a high-temperature furnace and heat them to 700°C with carbon dioxide gas, keep them warm for 5 minutes, take them out, put them into water quickly, and take them out The cooled ore block shall be manually crushed to less than 3mm, dried in an oven, put into a 1000ml polytetrafluoroethylene beaker, add 700ml of mixed acid (hydrofluoric acid: hydrochloric acid: nitric acid = 4:3:1), and place in a ventilated In the cupboard, heat and stir with a magnetic heating stirrer for 4 hours, let stand for 20 minutes, pour out the supernatant; then add 600ml of mixed acid, digest for 4 hours, pour out the supernatant after standing still; then add 200ml of mixed acid, After digesting for 2 hours, filter and...

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PUM

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Abstract

The invention discloses a method for determining the content of large flaky graphite in a flaky graphite ore. The method comprises the following steps: crushing the ore without destroying graphite flakes through using heat cracking fragmentation to realize dissociation of graphite and gangue mineral, and dissolving the gangue mineral in a mixed acid. Finally obtained graphite has high purity, and basically keeps the original occurrence granularity of the raw ore. The method can be used for determining the content and the granularity distribution of the large graphite flakes, and can accurately reflect the granularity characteristic of graphite in the graphite raw ore, and a determination result is helpful for accurately assessing the values of the graphite ore.

Description

technical field [0001] The invention relates to a method for measuring mineral content, in particular to a method for measuring the content of large flake graphite in flake graphite ore, and belongs to the technical field of mineral processing. Background technique [0002] Graphite is a very important industrial raw material and one of the emerging non-metallic materials that are indispensable for the development of high-tech today, and its application fields are very wide. Industrially, natural graphite is divided into three types: dense crystalline graphite, flake graphite, and aphanitic graphite according to different crystal forms. Among them, the floatability, lubricity and plasticity of flake graphite are superior to other types of graphite, so its industrial value is the largest. The large flake graphite has more important application value. [0003] Generally, large flake graphite refers to +100 mesh flake graphite. Compared with -100 mesh small flake graphite, la...

Claims

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Application Information

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IPC IPC(8): G01N15/02G01N1/28G01N1/44
CPCG01N1/286G01N1/44G01N15/0272
Inventor 董风芝刘凤春姜春志
Owner SHANDONG UNIV OF TECH
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