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A kind of coal slime drying and dehydrating device and drying and dehydrating method

A dehydration device and coal slime technology, applied in the direction of drying gas arrangement, drying chamber/container, drying solid materials, etc., can solve the problems that the surface of coal slime particles cannot be overheated and decomposed, coal slime particles are fully dried, etc., and achieve simple structure, High drying efficiency and easy operation

Active Publication Date: 2021-09-21
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above analysis, the present invention aims to provide a coal slime drying and dehydrating device, which solves the problem in the prior art that the coal slime particles cannot be fully dried on the basis of ensuring that the surface of the coal slime particles is not overheated and decomposed

Method used

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  • A kind of coal slime drying and dehydrating device and drying and dehydrating method
  • A kind of coal slime drying and dehydrating device and drying and dehydrating method
  • A kind of coal slime drying and dehydrating device and drying and dehydrating method

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Embodiment 1

[0061] This embodiment provides a coal slime drying and dehydrating device, see Figure 1 to Figure 4 , including a strip making unit, a drying and crushing unit and a coal slime collection unit connected in sequence, wherein the coal slime drying and crushing unit includes a drying cylinder 13 and a primary drying mesh belt 14, a crusher and a secondary drying mesh arranged in the drying cylinder 13 Belt 15, drying gas is passed into the drying cylinder 13, the outlet of the strip making unit is located above one end of the primary drying mesh belt 14, the other end of the primary drying mesh belt 14 is connected with the feed port of the crusher, and the outlet of the crusher is The feed port is located above one end of the secondary drying mesh belt 15, and the other end of the secondary drying mesh belt 15 is connected with the coal slime collection unit.

[0062] It should be noted that the coal slime drying and crushing device provided in this embodiment is suitable for ...

Embodiment 2

[0088] This embodiment provides a method for drying and dehydrating coal slime, comprising the following steps:

[0089] Step 1: Transport the slime filter cake to the strip making unit for strip making to obtain slime strips;

[0090] Step 2: The slime strips are transported to the drying and crushing unit, and are dried once on the primary drying mesh belt 14;

[0091] Step 3: Transport the once-dried slime strips to a crusher, and the crusher crushes the slime strips to obtain slime particles;

[0092] Step 4: The coal slime particles are subjected to secondary drying on the secondary drying mesh belt 15 to complete the drying and dehydration of the coal slime.

[0093] Compared with the prior art, the beneficial effects of the coal slime drying and dehydrating method provided in this embodiment are basically the same as those of the coal slime drying and dehydrating device provided in Embodiment 1, and will not be repeated here.

[0094] The sliver making unit includes a...

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Abstract

The invention discloses a coal slime drying and dehydrating device and a drying and dehydrating method, belonging to the technical field of coal slime drying, and solves the problem in the prior art that the coal slime particles cannot be fully dried on the basis of ensuring that the surface of the coal slime particles is not overheated and decomposed . The device includes a sliver making unit, a coal slime collection unit, a drying cylinder, a primary drying mesh belt, a crusher and a secondary drying mesh belt. The outlet of the sliver making unit is located above one end of the primary drying mesh belt, and the The other end is connected to the feed port of the crusher, the discharge port of the crusher is located above one end of the secondary drying mesh belt, and the other end of the secondary drying mesh belt is connected to the slime collection unit. The method comprises the steps of making the coal slime filter cake into strips; transporting the coal slime strips to a drying and crushing unit for primary drying; transporting the primary dried coal slime strips to a crusher for crushing; and performing secondary drying of the coal slime particles. The device and method of the invention can be used for drying and dehydrating coal slime.

Description

technical field [0001] The invention belongs to the technical field of coal slime drying, and in particular relates to a coal slime drying and dehydrating device and a drying and dehydrating method. Background technique [0002] Coal slime refers to a by-product produced in the process of washing coal, which is essentially a semi-solid formed of coal powder and water. Coal slime has low economic benefits due to its high water content and low calorific value. Therefore, the coal industry tries to use various methods to reduce the water content of coal slime and increase its calorific value. [0003] In the prior art, when using conventional drying technology to dry coal slime particles, in order to avoid overheating and decomposition of the surface of coal slime particles, the drying time is usually shortened, but the short drying time will cause the internal temperature of the coal slime particles to be low, which cannot Realize the full drying of the slime. Contents of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B5/14F26B17/00F26B21/00F26B25/00F26B25/04F26B25/16F26B25/18F26B1/00B28B3/24B02C13/13B02C13/06
CPCB02C13/06B02C13/13B28B3/24F26B1/005F26B5/14F26B17/006F26B21/001F26B25/002F26B25/04F26B25/16F26B25/18
Inventor 万克记贺琼琼刘炯天苗真勇许恩乐高明强李欣源
Owner CHINA UNIV OF MINING & TECH
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