Two-section series high-pressure roller milling-stirring milling short-process grinding system and method

A high-pressure roller mill and high-pressure roller mill technology, which is applied in the field of mineral processing, can solve the problems of unstable pulverized product indicators and complex processes, and achieve the effects of reducing grinding energy consumption and medium consumption, high energy consumption, and sufficient development.

Pending Publication Date: 2021-07-13
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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  • Two-section series high-pressure roller milling-stirring milling short-process grinding system and method
  • Two-section series high-pressure roller milling-stirring milling short-process grinding system and method

Examples

Experimental program
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Effect test

Example Embodiment

[0034] Example 1

[0035] Two-segment high pressure roller mill - stirring grinding short flow ground mill, showing the structure figure 1, Includes a high pressure roller mill 1, a segment vibrating screen 2, two high pressure roller mill 3, two-stage vibrating screen 4, stirring milling 5, and a hierarchical device 6 (the hierarchical device of this embodiment is a hydrover), a section The material outlet of the high pressure roller mill 1 and a vibrating screen 2 are in communication, and the material outlet on the screen of the vibrating screen 2 and the screen of the material inlet in a segment of the high pressure roller 1, and the material outlet and segment of the screen of the vibrating screen 2 The material of the high pressure roller mill 3 is in communication, the material outlet and the segment of the two high pressure roller mills communicate, and the screen of the segment of the segment of the vibrating screen 4 is applied to the screen of the two high pressure roll...

Example Embodiment

[0041] Example 2

[0042] Two-segment high pressure roller milling of Example 1 was carried out, two sections of series high pressure roller mills were carried out, and the mixing and grinding process was subjected to the embodiment, and the difference is:

[0043] (1) The particle size of the fine mineral is a -12mm copper ore sample; a vibrating screen is 5mm, the mass concentration of stirring grinding is 60%, the stirred mill is filled with 70%, the material ball ratio is 0.7, ceramics The ball diameter is 6mm and the mill is 3 min.

[0044] (2) After stirring the grinding ore product, after the hydraulic cyclone, the concentration of mineral mass in the overflow product is 35%, and the percentage concentration of mineral mass in the sand is 65%. The sandstone product is again delivered to the stirring grind to carry out the milling operation, the mineral content of -0.074 mm in the overflow product accounts for 85% of total mineral mass, and the relative abrasion of minerals ...

Example Embodiment

[0045] Example 3

[0046] Two-segment high pressure roller milling of Example 1 was carried out, two sections of series high pressure roller mills were carried out, and the mixing and grinding process was subjected to the embodiment, and the difference is:

[0047] (1) The particle size of the fine minerals is a gold ore sample; a section of the vibrating screen is 4mm, the mass concentration of the stirring grinding murder is 70%, the stirred mill is filled with 75%, and the ram ratio is 0.85, ceramic ball. The diameter is 10 mm, and the mill is 4.5 min.

[0048] (2) After stirring and grinding the ore product, after the hydraulic cyclone, the concentration of mineral mass concentration in the overflow product is 38%, and the percentage concentration of mineral mass in the sand is 62%. The sand product is again delivered to the stirring grind to carry out the milling operation, and the mineral content of -0.045mm in the overflow product accounts for 80% of the total mineral mass....

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Abstract

The invention discloses a two-section series high-pressure roller milling-stirring milling short-process grinding system and method, and belongs to the field of mineral processing. According to the two-section series high-pressure roller milling-stirring milling short-process grinding system, a first-section high-pressure roller mill is communicated with a first-section vibrating screen, an undersize material outlet of the first-section vibrating screen is communicated with a second-section high-pressure roller mill, the second-section high-pressure roller mill is communicated with a second-section vibrating screen, and an undersize material outlet of the second-section vibrating screen is communicated with a stirring mill; and the stirring mill is connected with a grading device. According to the method, materials crushed and screened by the first-section high-pressure roller mill are crushed by the second-section high-pressure roller mill, and then ore grinding operation is conducted through the stirring mill, so that ball milling operation with high energy consumption and low ore grinding efficiency in a traditional process is omitted, and the energy-saving advantages of the high-pressure roller mill and the stirring mill are fully exerted. The grinding process can be simplified, and meanwhile the grinding efficiency and the treatment capacity can be greatly improved, the ore grinding dissociation effect of the stirring mill is enhanced, the economic benefits of enterprises can be improved, and large-scale industrial operation of the high-pressure roller mill is facilitated.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a two-stage high-pressure roller mill-stirring mill short-process crushing system and a method thereof. Background technique [0002] The crushing and grinding operation is the preparatory operation before sorting. Its task is to provide the selected materials with qualified particle size for the mineral processing operation. The standard for judging the qualified particle size of the selected materials is that the useful minerals in the ore must achieve sufficient monomer dissociation, and after crushing, they must As slight as possible to facilitate subsequent sorting operations. Ore crushing and grinding is the operation with the highest energy consumption in the process of mineral resources processing and utilization, especially when performing ultra-fine grinding operations, the energy consumption of traditional horizontal ball mills increases exponent...

Claims

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Application Information

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IPC IPC(8): B02C21/00B02C23/14
CPCB02C21/005B02C23/14
Inventor 韩跃新李艳军秦永红高鹏余建文
Owner NORTHEASTERN UNIV
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