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Super-light ceramicite and its preparing method

A preparation method and technology of ultra-light ceramics, applied in the field of artificial lightweight aggregates, can solve problems such as loss of land resources and inconsistency with ecology, and achieve the effects of protecting land resources, preventing re-pollution, and saving the cost of dredging and discharging sewage.

Inactive Publication Date: 2007-07-04
NINGBO PINGHAI BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many invention patented technologies (products) occupy different proportions of clay as raw materials or additives, losing valuable land resources, which is not in line with ecology and the sustainable development direction of the building materials industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Raw materials: river silt in Ningbo area, auxiliary materials shale from a certain origin.

[0028] 2. Chemical composition of raw materials and auxiliary materials:

[0029] Composition % SiO 2 、Al 2 o 3 , Fe 2 o 3 , CaO, MgO, Na 2 O, K 2 O, loss on ignition

[0030] Silted sludge 48.87 15.99 8.03 4.14 1.11 0.42 1.46 19.29

[0031] Shale 58.1 15.71 7.82 6.36 3.10 0.92 1.53 5.84%

[0032] 3. Ratio of raw materials and auxiliary materials (weight ratio)

[0033] Raw material 60%, auxiliary material 40%

[0034] 4. Chemical composition of batch materials:

[0035] Composition % SiO 2 、Al 2 o 3 , Fe 2 o 3 , CaO, MgO, Na 2 O, K 2 O, loss on ignition

[0036] Batch 52.56 15.88 7.94 4.93 1.90 0.62 1.49 13.91

[0037] 5. Batch moisture: 26%

[0038] 6. Process conditions

[0039] (1) The decarburization temperature (the wet ball is put into the kiln for preheating and drying) is 400°C, and the decarburization time is 25 minutes.

[0040] (2) Inflammat...

Embodiment 2

[0043] 1. Raw materials: Sludge collected in Dongqian Lake, a scenic spot in Ningbo, supplemented with shale from a certain origin.

[0044] 2. Chemical composition of raw materials and excipients

[0045] Composition % SiO 2 , Al2O 3 , Fe 2 o 3 , CaO, MgO, Na 2 O, K 2 O, loss on ignition

[0046] Silted sludge 47.42 16.27 7.64 2.98 0.97 0.73 2.01 21.50%

[0047] Shale 58.10 15.71 7.82 6.36 3.1 0.92 1.53 6.24%

[0048] 3. Ratio of raw materials and auxiliary materials (weight ratio)

[0049] Raw materials 70% accessories 30%

[0050] 4. Chemical composition of batch materials:

[0051] Composition % SiO 2 、Al 2 o 3 , Fe 2 o 3 , CaO, MgO, Na 2 O, K 2 O, loss on ignition

[0052] Batch 53.80 16.10 7.69 3.99 1.61 0.79 1.86 14.01%

[0053] 5. Batch moisture: 27.5%

[0054] 6. Process conditions

[0055] (1) The decarburization temperature (the wet ball is put into the kiln for preheating and drying) is 300°C, and the decarburization time is 30 minutes.

[0056]...

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Abstract

The invention relates to a super-light ceramic granule, belonging to construction material preparation field, about artificial light material preparation. It takes sludge from river, lake and reservation as raw material and takes shale as auxiliary material. It makes use of the heat from fusible organic component during baking and thus shortens the baking time and saves energy consumption. It controls process of de-carbonization and sintering and expanding to produce super-light ceramic granule. The product is mainly used as bone material for concrete temperature insulation, super-light wall material, block super-light material, temperature insulation material and packing material for wastewater biological treatment.

Description

technical field [0001] The invention belongs to building materials, and relates to artificial lightweight aggregates for civil and construction engineering thermal insulation or structural thermal insulation concrete, and provides an ultra-light ceramsite and a preparation method thereof. Background technique [0002] Since the advent of artificial light aggregate shale ceramsite in the United States in 1913, the method of replacing ordinary centimeter sandstone aggregate with light aggregate to reduce the self-weight of ordinary concrete and improve a series of properties has attracted widespread attention from all over the world. [0003] As we all know: light aggregates can be divided into: natural light aggregates, industrial waste light aggregates and artificial light aggregates. Man-made lightweight aggregates are light-weight high-strength ceramsites made of clay, shale, etc. as the main raw materials. It has always been paid attention to by people, and the developme...

Claims

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Application Information

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IPC IPC(8): C04B35/00C04B35/622
Inventor 朱平儿钱自勇胡涌虞克夫
Owner NINGBO PINGHAI BUILDING MATERIALS
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