Sodium silicate inorganic dedusting ash recycling method and application thereof

A recycling method and technology of water glass, applied in casting molding equipment, molds, cores, etc., can solve the problem of no specific standard method for water glass dust removal, insufficient use of effective components of dust removal, long recovery time, etc. problems, to achieve the effects of reducing economic costs, short recovery process time, and simple preparation methods

Inactive Publication Date: 2019-08-16
南阳仁创砂业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Landfill treatment is to treat dust removal ash as solid waste, but landfill treatment as solid waste will cause serious pollution to the soil
However, as a cement filler, the effective components in the dust removal ash are not fully utilized.
In addition, there is no specific and standardized method for the recovery of water glass dust removal ash, and the recovery rate is low and the recovery time is long.

Method used

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  • Sodium silicate inorganic dedusting ash recycling method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The water glass inorganic dedusting ash recovery method of the present embodiment may further comprise the steps:

[0031] (1) Sieve the inorganic dust removal dust of water glass, recycle the dust removal dust greater than 200 mesh as sand particles, and collect the dust removal dust not greater than 200 mesh;

[0032] (2) adding quartz powder to the collected dedusting ash of no more than 200 meshes, the quality of the quartz powder accounts for 8% of the mass of the dedusting ash no more than 200 meshes, and stir evenly to obtain the dedusting ash after treatment;

[0033] (3) Put the processed dedusting ash into a roasting furnace for roasting, the roasting temperature is 1600°C, and the roasting is stirred while roasting, the roasting time is 22min, and then cooled to normal temperature;

[0034] (4) The cooled dedusting ash is pulverized, and the pulverized particle size is less than 200 mesh, and dried to obtain the dedusting ash powder.

[0035] The inorganic w...

Embodiment 2

[0038] The water glass inorganic dedusting ash recovery method of the present embodiment may further comprise the steps:

[0039] (1) Sieve the inorganic dust removal dust of water glass, recycle the dust removal dust greater than 200 mesh as sand particles, and collect the dust removal dust not greater than 200 mesh;

[0040] (2) adding quartz powder to the collected dedusting ash of no more than 200 mesh, the quality of the quartz powder accounts for 10% of the quality of the dedusting ash no more than 200 mesh, and stir evenly to obtain the dedusting ash after treatment;

[0041] (3) Put the processed dedusting ash into a roasting furnace for roasting, the roasting temperature is 1700°C, and the roasting is stirred while roasting, the roasting time is 20min, and then cooled to normal temperature;

[0042] (4) The cooled dedusting ash is pulverized, and the pulverized particle size is less than 200 mesh, and dried to obtain the dedusting ash powder.

[0043] The inorganic w...

Embodiment 3

[0046] The water glass inorganic dedusting ash recovery method of the present embodiment may further comprise the steps:

[0047] (1) Sieve the inorganic dust removal dust of water glass, recycle the dust removal dust greater than 200 mesh as sand particles, and collect the dust removal dust not greater than 200 mesh;

[0048] (2) adding quartz powder to the collected dedusting ash of no more than 200 meshes, the quality of the quartz powder accounts for 12% of the quality of the dedusting ash no more than 200 meshes, and stir evenly to obtain the dedusting ash after treatment;

[0049] (3) Put the processed dedusting ash into a roasting furnace for roasting, the roasting temperature is 1800°C, and the roasting is stirred while roasting, the roasting time is 18min, and then cooled to normal temperature;

[0050] (4) The cooled dedusting ash is pulverized, and the pulverized particle size is less than 200 mesh, and dried to obtain the dedusting ash powder.

[0051] The inorgan...

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Abstract

The invention discloses a sodium silicate inorganic dedusting ash recycling method. The method comprises the following steps that sodium silicate inorganic dedusting ash is screened, dedusting ash larger than 200 meshes is used as sand grains for recycling, dedusting ash not larger than 200 meshes is collected; quartz powder is added into the collected dedusting ash not larger than 200 meshes, andthe mixture is stirred to be uniform to obtain the treated dedusting ash; the treated dedusted ash is placed into a roasting furnace for roasting, stirring is carried out while roasting, and coolingtreatment is carried out; and the cooled dedusting ash is smashed and dried to obtain dedusting ash powder. The dedusting ash recycling method is simple, no other waste is generated in the recycling process, the recycling rate is high, the whole recycling process is short in time, energy is saved, the fire resistance of coated sand can be enhanced when the dedusting ash is used as an additive in the coated sand, and the strength and the fire resistance of the coated sand can be enhanced by silicate.

Description

technical field [0001] The invention belongs to the technical field of recovery and utilization of dedusting ash, and in particular relates to a recovery method of water glass inorganic dedusting ash and its application. Background technique [0002] Inorganic water glass binder is regarded as the most environmentally friendly casting material because its main component is inorganic salt and no harmful gas is released during the casting process. It is the most economical and convenient way to regenerate inorganic water glass sand through mechanical methods, but regeneration During the process, about 10% of the dust removal dust will be produced. There are a large amount of inorganic salts and related alkaline oxides in the dust removal dust, and the treatment of the dust removal dust has encountered difficulties. [0003] The existing disposal method of dedusting ash is landfill disposal, or it is added as a filler for preparing cement. Landfill treatment is to treat dust r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/00
CPCB22C1/00
Inventor 冯俊龙尹海军包羽冲李卓情刘承翔
Owner 南阳仁创砂业科技有限公司
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