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Method for preparing aerated brick from waste paper

A technology for aerated bricks and paper products, applied in solid waste management, climate sustainability, sustainable waste treatment, etc., can solve problems such as odor, pollution, consumption of dissolved oxygen, etc., achieve large dosage and alleviate environmental pollution effect of the problem

Inactive Publication Date: 2015-09-09
蚌埠营军新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Papermaking black liquor contains a large amount of suspended solids, organic pollutants and toxic substances, and direct discharge into water bodies will cause serious pollution
Its main hazards are: papermaking wastewater containing a large amount of fibers, pigments and inorganic salts will turn the water black and have a special stench; the biochemical oxygen demand (BOD) of papermaking black liquor containing high concentrations of organic pollutants can be as high as 5000~40000g / L, will consume a large amount of dissolved oxygen in water and affect water quality; a large amount of alkaline substances in black liquor will make the pH value of water body rise sharply, destroying the balance of water body environment

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0028] A method for preparing aerated bricks from waste paper products is carried out according to the following steps:

[0029] (1), take the following dry basis raw materials in parts by mass:

[0030] Quicklime 25 parts

[0031] 16 pieces of coal gangue

[0032] 13 parts of cement

[0033] Active waste residue 25 parts

[0034] Aluminum oxide 6 parts

[0035] Modified loess 5 parts

[0036] 4 parts of defoamer;

[0037] (2) First crush quicklime and active waste slag, grind them finely, and then carry out wheel milling with modified loess, alumina, coal gangue and appropriate amount of papermaking black liquor, and add defoamer to the wheel milling at the same time. 0.8-0.9Mpa steam room curing for 20-22h, and then sent to the carbonization room;

[0038] (3), the flue gas is transported to the carbonization chamber through the fan and the pipeline, and the carbonization chamber C0 2 The gas concentration is 7 ± 12%, the temper...

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Abstract

The invention discloses a method for preparing an aerated brick from waste paper, which comprises the following step: (1) taking the following raw materials on dry basis in parts by mass: 20-30 parts of quicklime, 15-18 parts of coal gangue, 12-14 parts of cement, 20-30 parts of active waste slag, 5-7 parts of aluminum oxide, 4-6 parts of modified loess and 2-5 parts of defoaming agent. The method has the advantages of high construction waste consumption, energy saving and environment friendliness, relieves the problem of environmental pollution caused by stacking of the construction waste, and provides a new raw material for hollow bricks.

Description

technical field [0001] The invention relates to the field of new building materials, in particular to a method for preparing aerated bricks from waste paper products. Background technique [0002] Papermaking black liquor contains a large amount of suspended solids, organic pollutants and toxic substances, which will cause serious pollution if discharged directly into water bodies. Its main hazards are: papermaking wastewater containing a large amount of fibers, pigments and inorganic salts will turn the water black and have a special stench; the biochemical oxygen demand (BOD) of papermaking black liquor containing high concentrations of organic pollutants can be as high as 5000~40000g / L, will consume a large amount of dissolved oxygen in water and affect water quality; a large amount of alkaline substances in black liquor will make the pH value of water body rise sharply and destroy the balance of water body environment. [0003] The combination of papermaking black liq...

Claims

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Application Information

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IPC IPC(8): C04B28/10C04B18/30
CPCY02W30/91
Inventor 朱春朱世军
Owner 蚌埠营军新材料科技有限公司
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