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A mineral dry vibration separation device and method

A sorting device and vibration direction technology, which is used in chemical instruments and methods, solid separation, and separation of solids from solids by air flow, etc. High sorting accuracy, shortened sorting time, and increased motion displacement difference

Active Publication Date: 2019-03-15
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above analysis, the present invention aims to provide a mineral dry vibration separation device and method, in order to solve the existing mineral dry separation device and method for fine coal dry separation, fine metal ore pre-selection and Difficult removal of gangue in non-metallic mines, low precision and poor stability

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  • A mineral dry vibration separation device and method

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Embodiment 1

[0027] This embodiment provides a mineral dry vibration separation device, the device includes a separation chamber 8, such as figure 1 As shown, a sorting weight 9 is arranged in the sorting chamber 8; an air distribution chamber is arranged at the bottom of the sorting chamber 8, and the air distribution chamber has an air inlet 1, and compressed air enters the air distribution chamber from the air inlet 1, and the The air flow is evenly distributed, and then enters the sorting chamber 8, where the air flow and the sorting weight 9 are evenly mixed in the sorting chamber 8 to form a fluidized environment. Vibrating the sorting chamber 8, in the fluidized environment of the sorting chamber 8, layered separation is carried out according to the density difference, the particles with higher density sink to the bottom of the sorting chamber 8, and the particles with lower density float on the bottom of the sorting chamber 8 The upper part, so as to achieve the sorting of minerals...

Embodiment 2

[0033] This embodiment provides a dry vibration separation method for minerals, using the above separation device, taking the separation of 1-3mm fine-grained low-grade hematite ore as an example.

[0034] According to the separation density requirements of 1-3mm fine-grained low-grade hematite ore, the particle size range is 75-150μm, and the true density is 7.8g / cm 3 The gas-atomized iron powder is used as the leading weight, and the zircon sand of 150-250 μm is used as the auxiliary weight. After the two are mixed, they are placed in the sorting chamber 8 as the sorting weight 9, wherein the addition of the zircon sand cannot More than 20% of the whole sorting weight quality; according to the selected sorting weight type, particle size range and density and the sorted mineral type, particle size range and density, etc., the addition of sorting weight 9 is preferably formed The height of the static bed layer is 1 / 3~1 / 2 of the height of the sorting chamber; then, fine-grained...

Embodiment 3

[0036] Taking the separation of 1-6mm fine-grained coal as an example, according to the separation density requirements, magnetite powder is used as the main weighting material, and coal powder with a particle size of less than 1mm is the auxiliary weighting material, and the auxiliary weighting matter of coal powder can be added in advance Magnetite dominates the weight, and secondary coal powder less than 1mm can also be used as auxiliary weight in the separation process, and the amount of auxiliary weight coal powder added cannot exceed 15% of the entire separation weight; the magnetic The iron ore powder is 0.074-0.3mm wide-grained magnetite powder, of which the 0.15-0.3mm particle size accounts for 50%, and the true density is 4.5g / cm 3 , the bulk density is 2.65g / cm 3 , the height of the static bed formed after adding the sorting weight is 1 / 3 of the height of the sorting chamber. The fine-grained medium adopts fine-grained magnetite powder, and the filling volume is 50...

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Abstract

The invention relates to a mineral dry method vibration sorting device and method. The device comprises a sorting chamber (8) and a wind distribution chamber. The sorting chamber (8) is filled with a sorting dense medium. The device further comprises a vibration excitation unit (14). Both the sorting chamber (8) and the wind distribution chamber are controlled by the vibration excitation unit (14) to vibrate. The wind distribution chamber is located on the lower portion of the sorting chamber (8). An inclined micropore baffle (6) with the adjustable inclination angle is arranged between the sorting chamber (8) and the wind distribution chamber. The device is adopted by the method for sorting. The device is simple in structure and ingenious in design, and the method is easy to control, high in sorting precision and wide in application range, and has important theoretical value and practical significance for the application field for expanding the dry method fluidization sorting technology.

Description

technical field [0001] The invention relates to the technical field of mineral dry separation, in particular to a mineral dry vibration separation device and method. Background technique [0002] my country's coal resources are mainly distributed in arid and water-deficient areas such as Shanxi, Shaanxi, Inner Mongolia, and Xinjiang. It is very difficult to adopt wet coal preparation technology. Therefore, it is imminent to develop and promote high-efficiency dry coal preparation technology. In the field of dry separation, air-dense medium fluidized bed dry separation technology is widely used for its advantages of high separation efficiency and low environmental pollution. However, the traditional air-dense medium fluidized bed separation technology is mainly suitable for the separation of lump coal above 6mm, and has poor adaptability to the separation of fine-grained minerals below 6mm. At present, for the dry separation of fine-grained minerals, researchers have propose...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07B9/00
CPCB07B9/00
Inventor 贺靖峰段晨龙谭明兵蒋勇周恩会江海深刘成果
Owner CHINA UNIV OF MINING & TECH
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