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Mineral pre-enrichment method based on solid microwaves

A pre-enrichment and mineral technology, applied in grain processing, etc., can solve the problems of large waste generation, high energy consumption and high cost of beneficiation, and achieve the effects of short detection time, broad application prospects and high accuracy

Active Publication Date: 2022-01-21
CENT SOUTH UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, with the continuous consumption of mineral resources, the ore grade is decreasing on the whole. Therefore, the waste rock entering the beneficiation process is also increasing, resulting in high energy consumption, low efficiency, large waste generation and high cost of beneficiation. Therefore, there is an urgent need for a mineral pre-enrichment method based on solid-state microwaves, which has become a hot issue concerned by those skilled in the art.

Method used

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  • Mineral pre-enrichment method based on solid microwaves
  • Mineral pre-enrichment method based on solid microwaves
  • Mineral pre-enrichment method based on solid microwaves

Examples

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Effect test

Embodiment 1

[0050] The mineralization of a copper deposit is mainly composed of plagioclase and orthoclase, and a small amount of hornblende, quartz and other minerals. The main sulfide minerals are bornite, chalcopyrite and pyrite.

[0051] see figure 2 , a process flow chart of an ore pre-enrichment method based on solid-state microwave.

[0052] Ore pre-enrichment method based on magnetic resonance technology, including:

[0053] Step 1: Selected raw ore. The selected raw ore comes from the ore extracted from the stope or the raw ore warehouse.

[0054] Step 2: The raw ore is broken. The raw ore from the stope or the raw ore bin is coarsely crushed by the crusher.

[0055] Step 3: Sieve the bulk. The coarsely crushed raw ore is screened by a 50mm×50mm vibrating screen to remove large ore in the raw ore, and the large ore is discharged into the crusher for further crushing.

[0056] Step 4: Solid state microwave pre-enrichment. Different picture data of bornite, chalcopyrite and...

Embodiment 2

[0058] see image 3 , a flow chart of an ore pre-enrichment method based on solid-state microwave technology. The difference between Embodiment 2 and Embodiment 1 is that the crushing in step 2 and the vibration screening in step 3 are not required. For the selected raw ore without large pieces, the ore pre-enrichment can be directly carried out through the solid-state microwave pre-enrichment system in step 4 without crushing.

Embodiment 3

[0060] see Figure 4 , a process flow chart of an ore pre-concentration method based on solid-state microwave technology. The difference between embodiment three and embodiment one is that step 4 in embodiment three can control the concentration of certain minerals in the solid-state microwave pre-concentration system. In the case of fixed microwave frequency and fixed microwave heating time, according to the temperature rise and temperature field difference of mixed minerals, the raw ore can be pre-enriched into three types: waste rock, low-grade ore and high-grade ore.

[0061] The invention uses microwave technology to heat minerals at a set frequency, measures mineral-related parameters, and uses infrared sensors to collect mineral temperature field pictures. On this basis, it develops a microwave intelligent sorting algorithm based on computer vision and deep learning, combined with Intelligent sorting of ore materials can be realized by other means such as manipulator te...

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Abstract

The invention relates to a mineral pre-enrichment method based on solid microwaves, which comprises the following steps: selecting pre-enriched raw ores as selected raw ores, carrying out coarse crushing on the selected raw ores, screening to obtain screened ores, and carrying out microwave heating on the screened ores; acquiring temperature field pictures obtained after screening and microwave heating, making minerals and barren rocks in the pictures, on the basis of a large number of experiments, constructing an intelligent mineral recognition training model based on deep learning, recognizing and positioning the minerals and the barren rocks, and obtaining spatial three-dimensional coordinates of grabbing points; and constructing an automatic mineral sorting system, achieving separation of the ores and the barren rocks based on the spatial three-dimensional coordinates of the grabbing points, and completing pre-enrichment of the minerals. The method can be used for directly detecting whether the target mineral exists in a certain volume of mineral or not, can be used for quantitatively detecting the content of the mineral in the ore, and has a relatively high resolution ratio.

Description

technical field [0001] The invention relates to the field of ore pre-enrichment, in particular to a solid-state microwave-based mineral pre-enrichment method. Background technique [0002] Ore pre-enrichment is a key link in the mineral processing process. In the past, manual sorting was mainly used to remove waste rocks. Workers can distinguish the waste rocks in the raw materials with the naked eye, and then remove the waste rocks. This pre-enrichment method Not only is the work efficiency low and the labor intensity is high, it also requires a lot of manpower and the cost of pre-enrichment is high. In the prior art, an ore sorting process based on image recognition is proposed. This method relies on taking pictures of ore and identifying the color pre-enrichment of the image. In actual production, it is almost impossible to distinguish minerals by pictures. At present, there are also pre-enrichment methods such as XRF, laser, and X-ray transmission technologies on the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00
CPCB02C21/00Y02P10/20
Inventor 周科平张永玺
Owner CENT SOUTH UNIV
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