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A kind of sludge curing agent using aluminum slag

A curing agent and sludge technology, which is applied in the direction of sludge treatment, solid waste management, chemical instruments and methods, etc., can solve the problems that restrict the development of soft soil foundation reinforcement technology, the effect of tidal flat reinforcement is not obvious, and the cost of curing agent is high, so as to achieve protection The effects of marine ecological environment, good water stability, and strong frost resistance

Active Publication Date: 2017-12-15
宁波高新区围海工程技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the existing curing agent has a certain remarkable effect on the curing of soft ground with low water content, but the single curing agent component has no obvious effect on the reinforcement of tidal flats with high water content and complex mud composition, and the reinforced mud is not only Low strength, poor durability, high cost of curing agent, complex process, to a large extent restrict the development of soft soil foundation reinforcement technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of sludge curing agent using aluminum slag, its components and the mass fraction ratio of each component are: 15% aluminum slag powder, 15% lime powder, 45% microsilica powder, 20% gypsum, 2% Acidic activator, 2% basic activator, 0.5% thickener and 0.5% chloride salt, in the present embodiment, described acidic activator is sodium dihydrogen phosphate, and described basic activator is Sodium bicarbonate, the thickener is polyacrylamide, and the chloride salt is sodium chloride. Fully mix the curing agent with the above ratio with a mixer. The compressive strength of the curing agent is 12.1MPa at 3 days, and the compressive strength at 28 days is 34.5MPa; the flexural strength at 3 days is 3.9MPa, and the flexural strength at 28 days is 6.3MPa ; The initial setting time is 50 minutes, and the final setting time is 100 minutes.

[0019] The alkali slag solidifying agent can solidify marine beach mud, specifically, after fully mixing the solidifying agent in the a...

Embodiment 2

[0021] A kind of sludge curing agent using aluminum slag, its components and the mass fraction ratio of each component are: 25% aluminum slag powder, 25% lime powder, 30% microsilica powder, 11% gypsum, 3% Acidic activator, 3% basic activator, 1% thickener and 2% chloride salt, in the present embodiment, described acidic activator is calcium dihydrogen phosphate, and described basic activator is Hexamethylenetetramine, the thickener is polyaluminum chloride, and the chloride salt is potassium chloride. Fully mix the curing agent with the above ratio with a mixer. The 3-day compressive strength of the curing agent is 12.3MPa, and the 28-day compressive strength is 35.1MPa; the 3-day flexural strength is 4MPa, and the 28-day flexural strength is 6.9MPa; The initial setting time is 84min, and the final setting time is 150min.

[0022] The alkali slag solidifying agent can solidify marine beach mud, specifically, after fully mixing the solidifying agent in the above ratio, mix 8%...

Embodiment 3

[0024] A kind of sludge curing agent using aluminum slag, its components and the mass fraction ratio of each component are: 20% aluminum slag powder, 18% lime powder, 45% microsilica powder, 10% gypsum, 2% Acidic activator, 2% basic activator, 1% thickener and 2% chloride salt, in the present embodiment, described acidic activator is ammonium dihydrogen phosphate, and described basic activator is Calcium hydroxide, the thickener is polyacrylamide, and the chloride salt is aluminum chloride. Fully mix the curing agent with the above ratio with a mixer. The compressive strength of the curing agent is 13MPa at 3 days, and the compressive strength at 28 days is 36.2MPa; the flexural strength at 3 days is 4.3MPa, and the flexural strength at 28 days is 7.5MPa; The initial setting time is 95min, and the final setting time is 160min.

[0025] The aluminum slag solidifying agent can solidify the marine tidal flat mud. Specifically, after fully mixing the solidifying agent in the abov...

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Abstract

The invention provides a silt curing agent capable of utilizing aluminum slag, which is composed of the following components in percentage by mass: 15-25% of aluminum slag powder, 15-25% of lime powder, 30-45% of silicon micropowder, 10-30% of gypsum, 2-3% of acidic activator, 2-3% of alkaline activator, 0.5-1% of thickener and 0.5-2% of chloride, totaling 100%. By using the aluminum slag as the curing agent raw material, the curing agent is low in cost and suitable for reinforcing soft soil. The cured silt has the advantages of high strength, high water stability, favorable durability and high compression strength, and can implement rational utilization on natural silt and industrial waste.

Description

technical field [0001] The invention relates to a curing agent, in particular to a sludge curing agent using aluminum slag. Background technique [0002] China's aluminum profile processing industry is in a stage of rapid development and has become a major producer of aluminum profiles in the world. According to statistics, aluminum profile enterprises with an annual output of 100,000 tons discharge 5,000 tons of aluminum-containing waste slag every year, and there are about 200,000 to 300,000 tons of waste slag in the country every year. The comprehensive treatment and normal production of aluminum profile waste liquid occupy a large amount of land and cause secondary pollution. If we do not find an economical, effective and environmentally friendly method to treat it, it will pose a serious threat to the ecological environment. [0003] In addition, with the increasing scarcity of land, how to rationally develop and utilize the abundant marine tidal flat resources and all...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/14C02F11/00C04B28/00C04B28/14C04B18/14C04B22/06C04B22/12C04B103/44
CPCC02F11/14C04B28/14C04B18/144C04B22/064C04B18/146C04B22/12C04B2103/0068C04B2103/44C04B22/124C04B22/16C04B22/10C04B24/2652C04B24/121Y02W30/91
Inventor 俞元洪陈富强郑敬云余朝伟干焕军郑恩喜杨娜张威周龙王参苏梦旭
Owner 宁波高新区围海工程技术开发有限公司
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