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Preparation method of mud pottery sand inorganic thermal insulation mortar

A technology of inorganic thermal insulation mortar and ceramic sand, which is applied in the production and application of clay products and ceramic materials, and can solve the problems of polluting the marine environment, occupying farmland, and easily polluting the surrounding environment, so as to avoid secondary pollution and make good use of it. Effect

Inactive Publication Date: 2017-06-13
SHANGHAI ERSHIYE CONSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ocean dumping method will pollute the marine environment and is increasingly restricted by various aspects; landfilling sludge will occupy farmland and easily pollute the surrounding environment, resulting in deterioration of the ecological environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of silt pottery sand inorganic thermal insulation mortar, which comprises the following steps:

[0027] (a) Dry the sludge: the drying method is to place the sludge in a dry place, dry it in the sun or dry it in a dry, cool and ventilated place

[0028] (b) Sludge roasting: roasting the sludge at high temperature, the roasting time is not less than 30min, and the roasting temperature is not lower than 1000°C;

[0029] (c) After roasting, crush and sieve the residue to obtain pottery sand with a particle size below 2mm;

[0030] (d) Preparation of cement slurry: mix cement slurry according to a certain water-cement ratio;

[0031] (e) Mortar preparation: the pottery sand obtained in step (c) is used instead of fine sand to be mixed into cement slurry, and the pottery sand inorganic thermal insulation mortar is prepared after stirring evenly.

[0032] In the step (b), the calcination time is 30 minutes to 60 minutes, and the calcination temperature ...

Embodiment 2

[0036] Take pond silt and dredging silt to prepare silt ceramic sand inorganic thermal insulation mortar as an example:

[0037] 1. Expose pond silt, dredging silt, etc. in the sun;

[0038] 2. Transport the sun-dried sludge to the rotary kiln, and roast in the rotary kiln at 1100°C for 60 minutes;

[0039] 3. After roasting, crush and sieve the residue, and take pottery sand with a particle size below 2mm;

[0040] 4. According to the construction conditions and design requirements, mix cement slurry and add water reducing agent;

[0041] 5. Mix the clay sand into the cement slurry and stir evenly;

[0042] 6. Add polypropylene thermal insulation fiber to ceramic sand thermal insulation mortar and stir evenly.

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Abstract

The invention relates to a preparation method of mud pottery sand inorganic thermal insulation mortar. The method comprises the steps of (a) carrying out drying treatment on mud; (b) carrying out mud sintering, and roasting the mud at high temperature, wherein the roasting time is not less than 30min and the roasting temperature is not lower than 1,000 DEG C; (c) after roasting, crushing and sieving residues and taking pottery sand of which the particle sizes are smaller than 2mm; (d) preparing cement paste, stirring the cement paste at a certain water cement ratio; and (e) preparing the mortar, doping the pottery sand obtained in the step (c) into the cement paste instead of fine sand, stirring evenly and then preparing the mud pottery sand inorganic thermal insulation mortar. The mortar is mixed by using proper pottery sand instead of the fine sand according to the actual requirements of thermal insulation mortar preparation and the method provided by the invention; and the pottery sand inorganic thermal insulation mortar is nontoxic, tasteless, free of radioactive contamination and free of harm to a human body, and no harmful gas is discharged even if in a high-temperature environment generated by long-term direct irradiation of the sunlight.

Description

technical field [0001] The invention belongs to the technical field of mortar preparation, in particular to a preparation method of silt pottery sand inorganic thermal insulation mortar. Background technique [0002] A large amount of silt will be produced in port projects, reclamation projects, and river and lake dredging projects. In addition, in vast rural areas, a large amount of silt is also produced in old wells, ponds, and river courses. How to deal with these sludges is an urgent problem to be solved. The current disposal methods for these silts are mainly ocean dumping (coastal areas) and landfilling (inland areas). The ocean dumping method will pollute the marine environment and is increasingly restricted by various aspects; landfilling sludge will occupy farmland and easily pollute the surrounding environment, resulting in deterioration of the ecological environment. [0003] Compared with traditional cement mortar, ceramic sand insulation mortar only needs to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/02C04B33/132
CPCC04B18/023C04B28/00C04B33/1321C04B2235/95C04B2103/302C04B16/0633Y02P40/60
Inventor 梁宏文宋文智张志勇李长君谭辉
Owner SHANGHAI ERSHIYE CONSTR CO LTD
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