Sludge curing agent and method for preparing solidified product using same
A technology of sludge curing agent and cement binder, which is applied in chemical instruments and methods, sludge treatment, recycling technology, etc., can solve the problems of high cost, lack of economy, high raw material price, etc., and achieve reduction of moisture content, Effect of reducing water content and excellent cohesion
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[0064] The above-mentioned cement binder can be prepared from waste concrete by means of the preparation method described later.
[0065] In general, although the incineration residue of waste concrete can be recycled as a concrete mixture material, it is difficult to use it as a concrete because of its characteristics of being absorbed by calcium oxide contained in the above-mentioned waste concrete incineration residue, heat generation, and expansion. Problems with mixing materials. Therefore, the present invention can provide a sludge solidifying agent that improves deodorization and water content reduction effects while improving economic advantages by separating and using cement binder that cannot be used as a concrete mixture material from waste concrete.
[0066] Specifically, the above-mentioned cement binder can be produced by wet processing as shown in the production method described later. In the past, cement binders were used in which only the cement component was...
Embodiment 1
[0147] To the quicklime of 100 weight parts, the sodium alum of 200 weight parts, the cement of 100 weight parts, the cement binder of 400 weight parts (density is 2.0g / cm 3 , porosity 50%), 200 parts by weight of papermaking combustion materials, 400 parts by weight of woody biomass combustion materials (specific surface area is 5000cm 2 / g) and 100 parts by weight of bituminous coal combustion materials were uniformly mixed to prepare a sludge solidification agent. In this case, as the above-mentioned biomass burning material, a mixed burning material containing a palm shell burning material, a coconut shell burning material, and a sawdust burning material in a weight ratio of 1:3:4 was used. And, by crushing waste concrete into 3500cm 2 After that, the powder was washed with a sprinkler sieve, heat-treated at 600° C. until the moisture content reached 70%, dried and separated with a dust collector to prepare the cement binder.
[0148]After mixing 20 parts by weight of th...
Embodiment 2
[0150] A cured product was prepared in the same manner as in Example 1 above except that 500 parts by weight of a cement binder was used.
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