Method for separating fine powder from limestone

A separation method and limestone technology, applied in the direction of the swirling axial reversible device, swirling device, etc., can solve the problem that the ultrafine powder of limestone cannot be effectively separated, and achieve the improvement of dust removal effect, easy operation, and service cycle. long effect

Inactive Publication Date: 2013-03-27
SHANGHAI GUANGFA ENVIRONMENTALLY FRIENDLY MATERIAL CO LTD
View PDF7 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the limestone ultrafine powder produced by the current rotary milling machine cannot be effectively separated, the present invention provides a limestone fine powder separation method, which successfully solves this technical problem, and the separation of fine powder above 325 mesh reaches more than 90%. Whether it is output or quality, it can meet the needs of thermal power plants for limestone fine powder desulfurization

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for separating fine powder from limestone
  • Method for separating fine powder from limestone
  • Method for separating fine powder from limestone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] refer to Figure 1~Figure 3 , the limestone crushing equipment adopts the ZYF600 type punching powder mill 12, the limestone raw material 11 is sent to the powder mill 12, and the limestone particles are crushed into 5-400 mesh particles, and the crushed materials are sent tangentially from the entrance 1 through the centrifugal fan. In the cyclone separator 13.

[0030] The material moves spirally along the inner wall in the cyclone separator, and the particles with a fineness less than 325 mesh fall into the bottom of the conical cylinder 5 under the action of gravity, and are discharged through the ash discharge port (lower outlet).

[0031] The remaining materials in the cyclone separator 13 pass through the filter device 4 along with the air flow, and are sent to the air outlet 3 (upper outlet) of the cyclone separator by the central exhaust pipe 2. The large bottom surface of the filter device 4 is located on the upper edge of the cone, and the small bottom surfac...

Embodiment 2

[0035] Referring to Example 1, the limestone crushing equipment adopts the ZYF600 rotary pulverizer 12 to crush the limestone particles into 5-400 mesh particles, and the crushed materials are sent tangentially from the inlet 1 to the cyclone separator 13 by a centrifugal fan.

[0036] The materials do spiral movement in the cyclone separator, and the particles with a fineness of less than 325 mesh fall into the bottom of the conical cylinder 5 under the action of gravity, and are discharged through the ash discharge port; the remaining materials are filtered by the hollow filter device 4 with the air flow, and then exhausted from the center The pipe 2 is sent to the air outlet 3 of the cyclone separator. The large bottom surface of the filter device 4 is at the top and the small bottom surface is at the bottom. The filter device 4 has a diameter of 600mm at the bottom, a diameter of 350mm at the bottom, a height of 1.6m, and a filter aperture of 45μm, which can further prevent...

Embodiment 3

[0040] Referring to Example 1, the limestone crushing equipment adopts the ZYF600 rotary pulverizer 12 to crush the limestone particles into 5-400 mesh particles, and the crushed materials are sent tangentially from the inlet 1 to the cyclone separator 13 through a centrifugal fan.

[0041] The material does spiral movement in the cyclone separator 13, and the particles with a fineness of less than 325 mesh fall into the bottom of the conical cylinder 5 under the action of gravity, and are discharged through the ash discharge port. Powder particles (the size of the mesh can be adjusted according to needs to determine the particle size of cooking) are stored in the transition chamber 18, and then the medium powder particles 30 are released, packaged and transported to be used as hearth desulfurized limestone particles; the remaining coarse particles are sent back to the pulverizer 12 To crush.

[0042] The remaining materials in the cyclone separator 13 are filtered by the holl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
heightaaaaaaaaaa
Login to view more

Abstract

The invention provides a method for separating fine powder from limestone. The method comprises the following steps: separating coarse particles through allowing crushed limestone particles to go through a cyclone separator, filtering the fine powder, and collecting. The method for separating the fine powder from limestone can successfully separate particles with the fineness of above 325 meshes, and the separation degree can reach above 90%.

Description

technical field [0001] The invention relates to a method for separating solid fine powder, in particular to a method for separating limestone fine powder produced by a rotary mill. Background technique [0002] Limestone is rich in sources, cheap, and highly reliable in operation. At present, sulfur dioxide produced by coal-fired power plants in my country mainly relies on limestone absorption for desulfurization. Limestone powders with different finenesses have different desulfurization methods, and flue desulfurization is used for fineness above 300 mesh. (flue gas desulfurization), 10~300 mesh adopts furnace type desulfurization. The limestone powder used in furnace desulfurization contains a large amount of limestone fine powder of more than 300 mesh due to incomplete separation. This part of the fine powder is blown away by the wind before it can chemically react with sulfur dioxide, resulting in great waste. [0003] Different types of milling equipment are required to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B04C5/00
Inventor 李伟
Owner SHANGHAI GUANGFA ENVIRONMENTALLY FRIENDLY MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap