Learn about high-frequency melting sample development
1. Develop samples with melting method
In the current two methods of sample development—sheeting method
and melting method, the melting method is a widely recognized most
advanced sample development method in the world.
Sheeting method: analysis can be carried out after the sample is
crashed and pressed into round sheet; analysis report comes out in
5 minutes; but the analysis accuracy is lower because of the
granularity effect, matrix effect and mineral effect.
Melting method: mix the sample and boride flux, make them carry out
chemical reaction under high temperature and heating to transform
into borate, and then get even, neat, smooth and transparent glass
sheet; granularity effect, matrix effect and mineral effect can be
reduced to achieve high analyzing accuracy.
2. High-frequency melting sample development
High-frequency melting sample development is to carry out melting
sample using high-frequency induction heating method; compared to
the traditional melting method, it is energy saving, convenient,
environment friendly and can achieve high-standard melting sample.
3. Basic process for high-frequency melting sample development
. Pre-treatment of the sample
A. The grind size should be no more than 200 mesh.
B. Igloss it under 600-700℃, deposit it into desiccator
ii. Weighing sample
Weighing accuracy should reach 0.01 milligram
iii. Prescription
Different samples should adopt different prescription proportion, for example:
Iron ore: core sample/flux=1/20
Alumyte: core sample/flux=1/5
iv. Mixing
It is necessary to use a glass rod to make it fully mixed; then immediately deposit it into a desiccator.
v. Melting the sample
According to different core sample, set correspondingly the temperature (accuracy2℃) and the time (accuracy0.001s)
vi. Select the sheet
Do not touch the testing side; deposit it into dried vessel for further use.
4. High-frequency melting sample is applicable to the following industry:
. Mining industry: ore, ore concentrate, powder, metal oxide film, slag, etc.
ii. Ceramics: cement, limestone, dolomite, glass, quartz, clay, corhart, etc.
iii. Steel industry: iron ore, coal, converter, blast furnace, electric furnace slag, etc.
iv. Non-ferrous metal industry: alumina, alumyte, copper ore, etc.
v. Chemical industry: catalyst, polymer, etc.
vi. Geology soil: rock, soil.
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