Mineral intelligent sorting system and method

Abstract

The invention relates to an intelligent sorting system and method based on on-line coal quality detection technology, visual identification and positioning technology to detect the properties and positions of minerals, and to sort minerals according to categories of minerals with water jet. The intelligent sorting system and method are a fine process of identifying and sorting each material one byone, and are particularly suitable for sorting materials into a plurality of categories of products, and greatly improves the sorting accuracy. The sorting system of the present invention uses waterjet technology. Compared with a dry sorting injection technology in the prior art, the energy carried by the water jet is larger and more concentrated, and large materials which are difficult to be sorted in the technology in the prior art can be sorted. Compared with the dry sorting injection technology, water jet shooting target materials takes shorter time and achieves higher efficiency. The defects of interference of airflow on the running track of non-target materials caused by injecting materials with high-pressure gas in the current dry sorting technology and even inaccurate injection are avoided, and the sorting accuracy is improved. There is no coal dust caused by injecting materials by the dry sorting technology in the prior art, and there is no need for matched dust removal equipment.

Description

technical field [0001] The invention belongs to the technical field of mineral separation, and specifically relates to a separation technology applied to coal mining. Based on online mineral detection technology, visual recognition, and positioning technology, the properties and positions of minerals are detected, and coal and gangue are separated by water jets. A mineral intelligent sorting system and method for sorting according to mineral categories. Background technique [0002] Coal separation is mainly divided into two directions: water washing and dry separation. Water washing basically adopts jigging, dense medium, flotation and other processes. The advantages are mature process, high sorting precision, and large processing capacity; the disadvantages are large construction investment, high production cost, and large water resource consumption. Low-quality by-products such as slime. Dry separation is a coal preparation technology that has been researched and develo...

AI Technical Summary

Problems solved by technology

Water washing basically adopts jigging, dense medium, flotation and other processes. The advantages are mature process, high sorting precision, and large processing capacity; the disadvantages are large construction investment, high production cost, and large water resource consumption. Low-quality by-products such as slime

Dry separation is a coal preparation technology that has been researched and developed slowly in recent years. The core is a sorting technology that uses high-pressure gas to blow minerals. It has the advantages of simple process, less investment and low production cost; The technology has never solved the defects of poor sorting accuracy, small capacity and high requirements for coal types

Therefore, the injection dry separation process has not been widely promoted. Most of the newly built coal preparation plants in recent years have adopted relatively mature water washing processes, and only a few of them have adopted dry separation. After completion, most of them have poor separation accuracy was left idle or demolished

[0003] Existing jet dry separation technology can easily cause the air nozzle to hit the minerals inaccurately, which affects the separation effect; moreover, when jetting gangue, the air volume is too large to bring out the non-target minerals nearby, which also causes serious waste of air volume , long-term operation is not energy-saving; moreover, due to the limitation of the energy carried by the high-pressure wind, the quality and volume range of the separated minerals is narrow

[0004] The actual production situation shows that the accuracy of the existing injection dry separation technology is not high. The characteristics of drying and separation itself lead to a large amount of coal dust in the work, and special dust removal devices need to be arranged around. Therefore, it is difficult to be widely used and promoted.

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