Mineral concentration new technique for weak-magnetic iron ore

An iron ore and weak magnetic technology, applied in the field of iron ore beneficiation, can solve the problems of weak magnetic iron ore not being able to be utilized, poor benefit, high investment, etc., achieve good economic value and practicability, good energy saving effect, Good effect

Inactive Publication Date: 2007-10-31
张颖智
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Problems solved by technology

[0002] The existing iron ore beneficiation process is for magnetite ore with strong magnetism, not suitable for weak magnetic iron ore. There has been no good method for beneficiation of weak magnetic iron ore with less iron content, resulting in A large amount of weakly magnetic iron ore cannot be used, and some areas even abuse it as industrial stone at a low price, causing a great waste of resources
In the 1980s and 1990s, smelting and roasting techniques were used in an attempt to reduce the weakly magnetic iron ore containing ferric oxide to magnetic iron ore of ferric oxide, but due to high energy consumption, Due to high investment, low yield, poor benefit and lack of practicability, this process cannot be popularized and used, so it is forced to stop

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  • Mineral concentration new technique for weak-magnetic iron ore
  • Mineral concentration new technique for weak-magnetic iron ore

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Embodiment Construction

[0019] Fig. 1 is the new beneficiation process of a kind of weak magnetic iron ore of the present invention, and its concrete steps have been described in the summary of the invention, Fig. 2 is embodiment 1 of the present invention, in order to increase benefit, make the fine iron ore product When the iron content reaches ≥55%, the medium ore powder obtained in the beneficiation can be increased and sent back to the additional step of the wet ball mill, so that it can be ground, screened and beneficiated again.

[0020] According to new technology of the present invention, the inventor has carried out industrial test in the hematite producing area of ​​Hebei Province, China, and obtained good effect, and its specific implementation scheme is:

[0021] 1. First use the jaw crusher to crush the raw ore until the particles are less than 20mm, and then enter the impact hammer crusher for crushing, and crush the iron ore particles into particles and powders less than 8mm;

[0022]...

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Abstract

The weak magnetic iron ore selection process starts with the crushing of iron ore with iron content less than 35%, selecting high ladder magnetic strong interference selecting the grains, removing large quantity of adjacent formation, dike rock, grinding the iron grain and powder using ball grinder to original mineral serum, through wet strong magnetic machine for selection and accumulation and fine selection with filtering of water. It is less in process energy consumption, good in energy reservation effect, good in production benefit, convenient, being a pioneering way for iron ore selection.

Description

Technical field: [0001] The invention is a new beneficiation process of weak magnetic iron ore, which relates to the technical field of iron ore beneficiation process. Background technique: [0002] The existing iron ore beneficiation process is for magnetite ore with strong magnetism, not suitable for weak magnetic iron ore. There has been no good method for beneficiation of weak magnetic iron ore with less iron content, resulting in A large amount of weakly magnetic iron ore cannot be utilized, and even in some areas, it is abused as industrial stone at a low price, which causes a great waste of resources. In the 1980s and 1990s, smelting and roasting techniques were used in an attempt to reduce the weakly magnetic iron ore containing ferric oxide to magnetic iron ore of ferric oxide, but due to high energy consumption, Due to high investment, low yield, poor benefit and lack of practicability, this process cannot be promoted and used, and it is forced to stop. With the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B15/00B03C1/30
Inventor 张颖智郑荣岁张福东
Owner 张颖智
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