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A dry quality upgrading system and method for dry sorting minerals

A sorting and drying technology, applied in the direction of drying solid materials, drying gas arrangement, drying, etc., can solve the problems of small processing capacity, high energy consumption, poor continuity, etc., and achieve the effect of ensuring stability and continuity

Active Publication Date: 2020-03-17
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the embodiment of the present invention aims to provide a dry upgrading system and upgrading method for dry sorting minerals, which are used to solve the common problem of low processing capacity and high performance in existing dry sorting devices for wet minerals. Technical problems such as high power consumption and poor continuity

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  • A dry quality upgrading system and method for dry sorting minerals
  • A dry quality upgrading system and method for dry sorting minerals
  • A dry quality upgrading system and method for dry sorting minerals

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Embodiment 1

[0036] In one aspect, the invention discloses a dry upgrading system for dry sorting minerals, such as Figure 1 to Figure 5 As shown, the dry upgrading system includes a pre-drying unit and a drying and sorting unit, the pre-drying unit is arranged above the drying and sorting unit; the pre-drying unit includes a first air distribution chamber 7 and a first air distribution chamber 7 provided with a plurality of first holes. An air distribution cylinder 8; the first air distribution cylinder 8 is provided with a stirring device 15; the drying and sorting unit comprises a drum 19, a second air distribution cylinder 11, a second air distribution chamber 10 and a mandrel 18, and the drum 19 and The area between the second air distribution cylinder 11 is an interlayer area 20 , and a plurality of second holes are provided on the rotating drum 19 and the second air distribution cylinder 11 .

[0037] Specifically, such as figure 1 As shown, the pre-drying unit is a pre-drying sti...

Embodiment 2

[0069] The present invention also provides a dry upgrading method for dry sorting minerals, which specifically includes the following steps:

[0070] S1. Start the blower 1 to store gas in the air bag 2. The gas from the air outlet of the air bag 2 generates high-temperature hot air through the air heater 3. By controlling the first flow meter and the first regulating valve 4 and the second flow meter and the second flow meter Two regulating valves 5, and then control the air volume of hot air supplied to the first air distribution chamber 7 and the second air distribution chamber 10 by the first annular air supply pipe 6 and the second annular air supply pipe 9; wherein, the first air distribution chamber The hot air in the chamber 7 enters the first air distribution cylinder 8 through the first hole; the hot air in the second air distribution chamber 10 enters the drum 19 through the second air distribution cylinder 11 and the interlayer area 20. At this time, the first The ...

Embodiment 3

[0074] This example is dry sorting of fine-grained lignite, using the dry upgrading system for dry sorting minerals provided in Example 1 and the dry upgrading method for dry sorting minerals provided in Example 2 , and its specific implementation process is as follows:

[0075] Lignite with a particle size of 1-6mm, a moisture content of 38.6%, and an ash content of 31.29% is selected for dry separation. Expected requirements for dry separation: the ash content of clean coal is less than 15%, the yield is higher than 70%, and the moisture is less than 10%.

[0076] Turn on the blower 1 and blow a large amount of wind into the air bag 2. After the pressure gauge value reaches 0.4MPa, turn off the blower 1, open the air outlet of the air bag 2, and the air enters the air heater 3. Set the heating temperature to 110°C. Control the first flow meter and the first regulating valve 4 and the second flow meter and the second regulating valve 5, so that the hot air enters the first a...

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Abstract

The invention relates to a dry method upgrading system and an upgrading method for dry separation of minerals, belongs to the technical field of mineral drying and sorting devices, and solves the technical problems of small processing capacity, high energy consumption, poor continuity and the like of a wet mineral drying separation device in the prior art. The dry upgrading system comprises a pre-drying unit and a drying sorting unit, wherein the pre-drying unit is arranged at the upper portion of the drying sorting unit; the pre-drying unit comprises a first air distribution chamber and a first air distribution cylinder provided with a plurality of first holes; a stirring device is arranged in the first air distribution cylinder; the drying sorting unit comprises a rotary drum, a second air distribution cylinder, a second air distribution chamber and a mandrel;an area between the rotary drum and the second air distribution cylinder is a sandwich area; and the rotary drum and the second air distribution cylinder are provided with a plurality of second holes. According to the dry upgrading system, by adopting the series design of a stirring fluidized bed and a centrifugal fluidizedbed, the mineralsare pre-dried and then is subjected to subsequent drying separation, so that the aim of dry dehydration and upgrading of the mineral is achieved.

Description

technical field [0001] The invention relates to the technical field of mineral drying and sorting devices, in particular to a dry upgrading system and method for dry sorting minerals. Background technique [0002] my country is rich in mineral resources, but the per capita possession is small. The shortage of mineral resources is one of the important factors restricting my country's economic development. The efficient development, processing and utilization of mineral resources can alleviate the shortage of mineral resources to a certain extent, and is conducive to promoting economic development. The development and utilization of mineral resources will cause environmental pollution to a certain extent. With the continuous mining of mineral resources and the strong promotion of environmental protection by national policies, water spraying is required to reduce dust during the mineral mining process to reduce dust hazards and dust pollution, which will increase the moisture ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B04B3/00B04B5/10B04B7/12F26B21/00F26B25/04F26B25/00
CPCB04B3/00B04B5/10B04B7/12F26B21/00F26B25/007F26B25/04
Inventor 贺靖峰白强朱凌涛
Owner CHINA UNIV OF MINING & TECH
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