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Silt curing agent and preparation method thereof

A technology for curing agent and sludge is applied in the field of preparation of sludge curing agent and curing agent for curing sludge.

Inactive Publication Date: 2011-05-18
GUANGZHOU WATER CONSERVANCY & HYDROPOWER STATION CONSTR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its disadvantage is that it needs to use cement clinker as the raw material of the curing agent, which is easy to cause pollution and is uneconomical.

Method used

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  • Silt curing agent and preparation method thereof
  • Silt curing agent and preparation method thereof
  • Silt curing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Place the FGDS and EFSS materials in a microwave oven at 105°C for one night and grind them with alumina in a ceramic ball mill to make the surface area reach 350M 2 / KG, grind samples such as cement slag, lime, slag powder, blast furnace slag and put the additives required for the reaction into the ball mill to make the final product. It varies according to the composition, and its composition is shown in Table 1.

Embodiment 2

[0029] The components were added and mixed as described in Table 1, and the rest were the same as in Example 1.

Embodiment 3

[0031] The components were added and mixed as described in Table 1, and the rest were the same as in Example 1.

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Abstract

The invention discloses a silt curing agent and a preparation method thereof. The using amount of the curing agent can be saved and continuous operation is realized simultaneously. The silt curing agent comprises the following components of: 5 to 15 percent of electric furnace steel slag (EFSS), 5 to 15 percent of blast furnace cinder (OPCC), 20 to 45 percent of granulated blast furnace slag (GBFS), 20 to 45 percent of flue gas desulfurization slag (FGDS) and 4 to 16 percent of activator. The preparation method comprises the following steps of: (1) mixing the components and drying in a heating furnace for 3 to 6 hours; and (2) grinding in a grinder in which a backmixing device is arranged, and feeding partial curing agent into a feeding port and mixing with newly added components through the backmixing device. The curing agent can be used for building road base soil or curing silt produced by dredging rivers, lakes, dredged canals to prepare civil materials. The invention has the advantages that: the curing agent is good in curing effect and favorable for environment friendliness, the using amount is saved and the continuous operation can be realized.

Description

technical field [0001] The present invention relates to a curing agent, particularly a curing agent that can be used to solidify sludge; the present invention also relates to a preparation method of a sludge curing agent. Background technique [0002] Silt is an alluvial land resource composed of very fine particles, including fine sand particles, silt particles and clay particles not exceeding 10% by weight. Due to the weak viscosity and low activity of silt particles, it is usually not suitable for construction of highways. Therefore, to stabilize this sludge, sand additives must be added. Cement, lime, dust, organic polymers and mixtures have been widely used as stabilizers. When adding stabilizer into sand, a series of chemical reactions such as pozzolanic reaction, ion exchange, flocculation, carbonation, crystallization and splitting reaction will occur. These reactions enhance the bonding force between particles and fill the voids between particles, which can impro...

Claims

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Application Information

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IPC IPC(8): C02F11/14C04B28/08
Inventor 谢国华杜河清闫晓满冯少龙
Owner GUANGZHOU WATER CONSERVANCY & HYDROPOWER STATION CONSTR ENG
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