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Silt curing agent using furnace slags

A curing agent and slag technology, which is applied in solid waste management, dewatering/drying/concentrating sludge treatment, sustainable waste treatment, etc., can solve the problems of poor treatment effect, high treatment cost, low sludge strength, etc. The effect of good stability, protection of ecological environment and rational utilization

Active Publication Date: 2016-06-01
温岭市众城环保科技发展有限公司
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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 soil with low moisture content, but for the treatment of marine sludge with high moisture content, the treatment effect is not good, not only the treatment cost is high, the process is complicated, but also after curing The silt has low strength and poor durability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A sludge curing agent using slag, the components and the mass fraction ratio of each component are: 30% slag, 30% cement, 37% waste gypsum, 0.1% ethyl cellulose, 0.1% poly Vinyl alcohol, 0.2% potassium sodium tartrate, 0.5% α-octadecylamine, 0.1% foaming agent, 1% dispersant and 1% superplasticizer, the foaming agent described in this example It is rosin soap, the dispersant is sodium citrate, and the superplasticizer is a naphthalene-based water reducer. Mix the curing agent with the above ratio thoroughly with a mixer. The curing agent has a 3-day compressive strength of 4.6MPa, a 28-day compressive strength of 32MPa, a 3-day flexural strength of 1.7MPa, and a 28-day flexural strength of 4.8MPa; Initial setting time is 110min, final setting time is 200min.

[0019] The alkali residue curing agent can solidify ocean tidal flat sludge, specifically, after the curing agent in the above ratio is fully mixed uniformly, 8% of the curing agent is mixed into the sludge with a m...

Embodiment 2

[0021] A sludge curing agent using slag, its components and the weight ratio of each component are: 40% slag, 30% cement, 23% waste gypsum, 1% ethyl cellulose, 0.8% polyethylene Alcohol, 0.2% potassium sodium tartrate, 1% α-octadecylamine, 0.5% foaming agent, 0.5% dispersant and 3% superplasticizer. The foaming agent in this example is Rosin thermal polymer, the dispersant is butyl stearate, and the superplasticizer is a melamine-based water reducer. Mix the curing agent of the above ratio with a mixer thoroughly. The curing agent has a 3-day compressive strength of 6.6MPa, a 28-day compressive strength of 33.6MPa, a 3-day flexural strength of 2.1MPa, and a 28-day flexural strength of 5.6MPa. ; Initial setting time is 95min, final setting time is 180min.

[0022] The alkali residue curing agent can solidify ocean tidal flat sludge, specifically, after the curing agent in the above ratio is fully mixed uniformly, 8% of the curing agent is mixed into the sludge with a moisture con...

Embodiment 3

[0024] A sludge curing agent using slag, its components and the weight ratio of each component are: 50% slag, 20% cement, 24% waste gypsum, 1% ethyl cellulose, 0.8% polyethylene Alcohol, 0.5% potassium sodium tartrate, 0.5% α-octadecylamine, 0.2% foaming agent, 1% dispersant and 2% superplasticizer. The foaming agent in this example is For rosin soap, the dispersant is butyl stearate, and the superplasticizer is a naphthalene-based water reducer. Mix the curing agent of the above ratio with a mixer. The curing agent has a 3-day compressive strength of 8.6MPa, a 28-day compressive strength of 32.9MPa, a 3-day flexural strength of 1.9MPa, and a 28-day flexural strength of 5.2MPa. ; Initial setting time 85min, final setting time 165min.

[0025] The alkali residue curing agent can solidify ocean tidal flat sludge, specifically, after the curing agent in the above ratio is fully mixed uniformly, 8% of the curing agent is mixed into the sludge with a moisture content of 60% and stirr...

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Abstract

The invention provides a silt curing agent using furnace slags. The silt curing agent is characterized by being prepared from the following components in percentage by mass: 30 to 50 percent of furnace slags, 20 to 30 percent of cement, 20 to 40 percent of waste gypsum, 0.1 to 1 percent of ethyl cellulose, 0.1 to 0.8 percent of polyvinyl alcohol, 0.2 to 0.5 percent of sodium potassium tartrate, 0.5 to 0.1 percent of alpha-octadecylamine, 0.1 to 0.5 percent of foaming agent, 0.5 to 1 percent of dispersing agent and 1 to 3 percent of high-efficiency slushing agent. The silt curing agent provided by the invention has the advantages of low cost, high curing strength, good water stability, good insulating performance, good sound insulation effect and suitability for reinforcing silt; reasonable utilization of natural silt and industrial wastes is realized.

Description

Technical field [0001] The invention relates to a curing agent, in particular to a sludge curing agent using slag. Background technique [0002] The amount of slag produced in the smelting process is very large. For example, the production of 1 ton of pig iron produces about 0.3 to 1 ton of blast furnace slag. The slag that does not return to the basic smelting process is often regarded as waste and accumulated on the beach in the form of dams. This is unreasonable Treatment methods not only cannibalize tidal flat resources, but also seriously endanger the ecological environment. [0003] In addition, with the rapid increase in the demand for construction land, there is a shortage of sand and stone required for the backfill area of ​​reclamation projects. How to rationally develop and utilize abundant marine tidal flat resources and alleviate land pressure has become an urgent problem for construction land. Therefore, there is an urgent need Develop a curing agent that uses slag t...

Claims

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Application Information

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IPC IPC(8): C04B28/04C02F11/14C04B18/14C04B22/14C04B24/06C04B24/08C04B24/12C04B24/26C04B24/34C04B24/38C04B103/30C04B103/40
CPCC02F11/14C04B28/04C04B2103/302C04B2103/408C04B2111/00767C04B18/142C04B22/146C04B24/383C04B24/2623C04B24/06C04B24/121C04B24/34C04B24/085C04B24/128Y02W30/91
Inventor 俞元洪陈富强余朝伟郑恩喜张威干焕军杨娜周龙王参苏梦旭
Owner 温岭市众城环保科技发展有限公司
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