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Method for preparing ceramsite by water supply sludge and sewage sludge

A technology for sewage sludge and water supply sludge, which is applied in the production of clay products, ceramic materials, and other household appliances, etc., can solve the problems of water sludge and sewage sludge affecting the environment and hazards.

Inactive Publication Date: 2012-10-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem that the existing water supply sludge and sewage sludge affect the environment and cause harm; and proposes a method for preparing ceramsite from water supply sludge and sewage sludge

Method used

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  • Method for preparing ceramsite by water supply sludge and sewage sludge
  • Method for preparing ceramsite by water supply sludge and sewage sludge
  • Method for preparing ceramsite by water supply sludge and sewage sludge

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specific Embodiment approach 1

[0015] Specific embodiment 1: In this embodiment, a method for preparing building ceramsite by using water supply sludge and sewage sludge is carried out according to the following steps: press water supply sludge and sewage sludge by (7 / 3~1.5): 1 The mass ratio is mixed to obtain a mixture, and then silicate substances are added, and the amount of the silicate substances is 8% to 15% of the mixture mass, mixed evenly, and then placed in a granulator for extrusion molding, and naturally dried Dry, heat up at a rate of 8-10 ℃ / min, then keep warm at 950-1000 ℃ for 25-35 minutes, and cool with the furnace; the building ceramsite is obtained.

[0016] After testing, the loose bulk density of building ceramsite is 550~750 kg / m 3 , the particle apparent density is 1050~1400 kg / m 3 , the porosity is 41%-53%, the water absorption is within 15%, the cylinder compressive strength is 8-17 MPa, and the mud content is 0.3%-0.5%.

[0017] In order to investigate whether it is possible to ...

specific Embodiment approach 2

[0025] Embodiment 2: This embodiment differs from Embodiment 1 in that: feedwater sludge and sewage sludge are mixed at a mass ratio of (3~2):2; %~15%. Incubate at 1000°C for 30 minutes. Other steps and parameters are the same as those in the first to third specific embodiments.

specific Embodiment approach 3

[0026] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the silicate substance is sodium silicate. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a method for preparing ceramsite by water supply sludge and sewage sludge, which relates to the method for preparing ceramsite for buildings. The invention is to solve the problem that current water supply sludge and sewage sludge influence the environment and cause damage. The method comprises the steps of: mixing the water supply sludge with the sewage sludge; then adding silicate substances and mixing; and finally placing the mixture in a comminutor to extrude and form, naturally drying, sintering and performing furnace cooling to obtain the ceramsite for buildings. The method for preparing ceramsite by water supply sludge and sewage sludge is used for building materials.

Description

Technical field [0001] The present invention involves pottery preparation methods; it is specifically to prepare pottery grains for water sludge and sewage sludge. Background technique [0002] The sludge is composed of a filter rinse and drainage, or a solid substance in the sedimentation tank or a clarified tank. The total solid content is generally between 0.1%and 2%.The filter punching sludge is mainly composed of suspended substances, clay, organic matter and chemicals. The sludge of the sedimentation tank can be divided into two types: lime softened sludge and chemical flocculation and sedimentary sludge.Softening process, the main components are calcium carbonate, magnesium hydroxide, organic matter and excess softening reagents; chemical flocculation and precipitating sludge consist of suspension, colloidal, organic substances, microorganisms and water purifications and trace heavy metal elements in raw waterEssence [0003] The main ingredients of inorganic ingredients a...

Claims

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Application Information

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IPC IPC(8): C04B33/132C04B33/22C04B14/04
CPCY02P40/60
Inventor 许国仁李圭白邹金龙
Owner HARBIN INST OF TECH
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