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Method for extracting magnetic materials and carbon from pulverized coal ash

A technology for magnetic materials and fly ash, applied in chemical instruments and methods, waste fuel, titanium oxide/hydroxide, etc., can solve the problems of reduced active components of fly ash, waste of energy, poor stability, etc. Selecting efficiency and purity, reducing dust pollution, and significant economic benefits

Inactive Publication Date: 2012-05-09
巨锋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The presence of char in fly ash not only wastes energy, but also seriously affects the quality of fly ash
The composition of organic carbon has poor stability and has always been considered as a harmful substance to concrete. Due to the increase of inert carbon, the active components of fly ash will decrease. Carbon can increase the water demand of concrete, reduce the compactness, and also affect the water reducing agent. The amount of admixtures and the color and uniformity of the appearance of the concrete

Method used

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  • Method for extracting magnetic materials and carbon from pulverized coal ash
  • Method for extracting magnetic materials and carbon from pulverized coal ash
  • Method for extracting magnetic materials and carbon from pulverized coal ash

Examples

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Embodiment 1

[0058] Such as figure 1 As shown, the fly ash material is fed to the vibrating dust collection type disintegrator 1 by a forklift or other machinery, and the machine 1 separates the fly ash material into large pieces of non-ash and dispersed fly ash, large A piece of non-ash matter is placed to be processed; after being dispersed, the fly ash is led to the dryer 3 through the feeder 2, and during the drying process of the dryer 3, light matter (lighter matter is produced with dust) gases) and heavy substances (heavier substances) are treated separately; among them,

[0059] The light matter is led to the dust collector 10 to be discharged after dust removal treatment;

[0060] The heavy objects are introduced into the collector 4 and sent to the dust-collecting vibrating screen 6 through the feeder 5. During the working process of the dust-collecting vibrating screen 6, the vibrating screen produces light and heavy objects during the working process. Among them,

[0061] Th...

Embodiment 2

[0086] This embodiment 1 is a simplification of embodiment 2, wherein the materials described in embodiment 1 are less than or equal to 20 mesh, greater than or equal to 80 mesh materials, and less than 80 mesh materials; combined into less than or equal to 20 mesh materials, according to Materials less than or equal to 20 mesh and greater than or equal to 80 mesh are processed (different types of fly ash are screened and classified with different particle sizes).

[0087] The structure of the vibrating dust collecting formula breaker described in the present embodiment 1 is as follows:

[0088] Such as figure 2 As shown, the vibrating dust collection type dispersing machine is mainly suitable for various powder materials or granular materials that are agglomerated due to moisture, and need to be broken up and loosened to remove large debris.

[0089] There is a feeding port 1 on the upper part of the frame, which is used to use some kind of feeding equipment to feed the mac...

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Abstract

A method for extracting magnetic materials and coal from pulverized coal ash relates to the technical field of pulverized coal ash separation and sequentially comprises the steps of: separating an ash material into a big non-ash material block and scattered pulverized coal ash; drying the scattered pulverized coal ash and then sending the dried ash to a dust collecting type vibrating screen; sending materials which are bigger than a certain reference material to a material loosening machine and sending the materials back to the dust collecting type vibrating screen after the material loosening process; and sending materials which are not bigger than the certain reference material to a magnetic separator to be divided into magnetism-free material ash and miscellaneous magnetic materials, wherein the magnetism-free material ash is subjected to one electric separation, the product thereof is divided into miscellaneous coals and ash, and the miscellaneous coals are subjected to a second electric separation to form coal and ash; the miscellaneous magnetic materials are sent to the magnetic separator to be magnetically separated into magnetism-free material ash and relatively pure magnetic materials; the relatively pure magnetic materials are collected; and the magnetism-free material ash and the magnetism-free materials are combined for a treatment. The invention has the advantages that magnetic materials and coal can be extracted from the pulverized coal ash, various materials contained in the pulverized coal ash are used comprehensively and additional values of the pulverized coal ash are improved.

Description

technical field [0001] The invention relates to the technical field of fly ash separation, and further relates to a method for extracting magnetic substances and carbon from fly ash. Background technique [0002] After detection and analysis, various material components and contents in the fly ash formed by the prior art: the main component is silicon dioxide (SiO 2 ), aluminum oxide (Al 2 o 3 ), ferric oxide (Fe 2 o 3 ), calcium oxide (CaO), unburned carbon (loss on ignition), and a small amount of magnesium (Mg), titanium (Ti), potassium (K), phosphorus (P), sulfur (S) and other oxides. Oxides such as silicon oxide, aluminum oxide, and titanium oxide come from sand, clay, shale, and slate, and iron oxide mainly comes from pyrite (FeS 2 ) Limonite ((FeO), hematite (Fe 2 o 3 ) and magnetite (Fe 3 o 4 ). Calcium oxide, magnesium oxide, etc. come from carbonates and sulfates in minerals. The percentages of various material components are as follows: SiO 2 Contains ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/02C01G23/047C10L5/48B07B1/28B03B1/02
CPCY02E50/30
Inventor 巨锋
Owner 巨锋
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