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Method for preparing road material from high-water-content sludge/engineering residue soil

A technology for engineering dregs and silt, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of high cost, low production efficiency, complicated operation, etc., achieve high added value and reduce treatment costs , The effect of simple dehydration process

Active Publication Date: 2022-04-15
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems of complex operation, low production efficiency and high cost in the resource utilization process of existing high water content sludge and dregs, and provides a method for preparing road materials from high water content sludge / engineering dregs, which can use high water content sludge , and dregs are prepared into higher value-added materials for road subgrades, bases, and sub-bases

Method used

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  • Method for preparing road material from high-water-content sludge/engineering residue soil
  • Method for preparing road material from high-water-content sludge/engineering residue soil
  • Method for preparing road material from high-water-content sludge/engineering residue soil

Examples

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Effect test

Embodiment 1

[0054] A method for preparing road materials from high water content silt and dregs, comprising the steps of:

[0055] (1) Mix 10kg of silt and construction dregs with a mass ratio of 1:1, 200g of quicklime, 5kg of graded crushed stone, 3g of potassium persulfate, and 50g of lignosulfonate. The moisture content of silt / engineering dregs is reduced below the optimum moisture content.

[0056] (2) Dilute 1g of C.S.S. Technology, Inc.'s EN-1 curing agent with 305g of water, add the dehydrated raw materials, stir well, and simmer overnight for later use.

[0057] (3) Use a two-stage non-sieve bottom wet material crusher to crush the raw materials after stewing until the particle size is less than 2cm, and transport them to the mixing equipment. 300g of domestic waste pyrolysis furnace slag, 200g of lithium slag powder, 300g of fly ash, 50g of calcium sulfate, 50g of sodium hydroxide, 100g of magnesium oxide, 1g of magnesium acetate, and 750g of ordinary portland cement are evenly...

Embodiment 2

[0062] A method for preparing road materials from high water content silt and dregs, comprising the steps of:

[0063] (1) Mix 10kg of silt and construction dregs with a mass ratio of 1:3, 100g of quicklime, 3kg of graded crushed stone, 5g of potassium persulfate, and 80g of naphthalenesulfonate, turn over and throw 3 times, and dry to the sludge / The water content of engineering dregs is reduced to below the optimum water content.

[0064] (2) Dilute 2g of Yifusen soil curing agent of Zhongke Shenglian with 260g of water, add the dehydrated raw materials, stir well and stew for 24 hours for later use.

[0065] (3) Use a two-stage wet material crusher without a sieve bottom to crush the raw materials after stewing until the particle size is less than 2cm, and transport them to the mixing equipment. 500g of domestic waste pyrolysis furnace slag, 500g of lithium slag powder, 1000g of fly ash, 100g of calcium sulfate, 50g of sodium hydroxide, 300g of magnesium oxide, 3g of magn...

Embodiment 3

[0069] A method for preparing road materials from high water content silt and dregs, comprising the steps of:

[0070] (1) Mix 10kg of silt and construction dregs with a mass ratio of 2:1, 300g of quicklime, 30kg of graded crushed stone, 10g of potassium persulfate, and 200g of sulfonated melamine-formaldehyde resin, turn over 3 times, and dry to The moisture content of silt / engineering dregs is reduced below the optimal moisture content.

[0071] (2) Dilute 5g of C.S.S. Technology, Inc.'s EN-1 curing agent with 500g of water, add the dehydrated raw materials, stir well, and stew overnight for later use.

[0072] (3) Use a two-stage wet material crusher without a sieve bottom to crush the raw materials after stewing until the particle size is less than 2cm, and transport them to the mixing equipment. 100g of domestic waste pyrolysis furnace slag, 100g of lithium slag powder, 300g of fly ash, Add 20g of calcium sulfate, 20g of sodium hydroxide, 100g of magnesium oxide, 1g of m...

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Abstract

The invention relates to a method for preparing a road material from high-water-content sludge / engineering muck. The method comprises the following steps: fully mixing the sludge / engineering muck with quick lime, graded broken stone, potassium persulfate and a surfactant, and turning until the water content is reduced to be below the optimal water content to obtain a first mixture; diluting a soil stabilizer with a proper amount of water, adding the diluted soil stabilizer into the first mixture, uniformly stirring, and braising for later use; crushing the raw materials, conveying the crushed raw materials to stirring equipment, uniformly adding the furnace slag, the lithium slag powder, the fly ash, the calcium sulfate, the sodium hydroxide, the magnesium oxide, the magnesium acetate and the ordinary Portland cement into the stirring equipment, supplementing water to the optimal water content according to conditions, and fully stirring to obtain a second mixture; according to the method, high-water-content sludge / engineering muck can be treated, the dehydration process is simple, and a road base or a subbase with a high additional value can be prepared; most raw materials are solid wastes which are cheap and easily available, so that the treatment cost is greatly reduced, and the environment-friendly benefit is high; the obtained road material is high in stability and good in water resistance.

Description

technical field [0001] The invention belongs to the field of solid waste recycling, in particular to a method for preparing road materials from high water content sludge / engineering dregs. Background technique [0002] A large amount of construction waste is generated in the process of urban construction and maintenance. According to the "Technical Standards for Construction Waste Treatment" (CJJ / T134-2019), construction waste includes solid waste such as demolition waste, engineering dregs, engineering mud, and decoration. At present, the amount of construction waste in my country is increasing geometrically. In the practice of construction waste treatment, the demolition waste mainly composed of concrete and bricks and tiles can be better disposed of after sorting and crushing because it can replace sand and gravel, while the sorted waste from engineering dregs, engineering mud and demolition waste About 30% of the silt is mainly filled with pits. With the increasingly t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B20/02
CPCY02W30/91
Inventor 张志远张付申
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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