Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Sludge steel slag ultra light ceramsite and method for preparing same

A technology of ultra-light pottery and steel slag, applied in the field of environmental science, to achieve the effects of sustainable economic development, low water absorption, and large specific surface area

Inactive Publication Date: 2011-09-28
SHANDONG UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no public report on the use of urban sewage plant sludge and converter steel slag to mix and fire ultra-light ceramsite

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sludge steel slag ultra light ceramsite and method for preparing same
  • Sludge steel slag ultra light ceramsite and method for preparing same
  • Sludge steel slag ultra light ceramsite and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) After the dewatered sludge is dried, the steel slag and clay are dried, the three raw materials are crushed, and sieved with a 100-mesh sieve (particle diameter ≤ 0.15mm);

[0033] (2) Weighing 10wt%, 80wt%, and 10wt% of the dried and pulverized sludge, clay, and converter steel slag, and mixing them evenly, adding an appropriate amount of water and stirring until it is sticky, and then making raw meal balls by conventional methods;

[0034] (3) Dry the raw meal balls at room temperature for 15 hours;

[0035] (4) Put the raw material balls into a 350°C box-type resistance furnace, preheat for 20 minutes; quickly transfer to a 1100°C tube-type resistance furnace and bake for 8 minutes; naturally cool to room temperature to obtain ultra-light ceramsite.

[0036] The appearance of the prepared ultra-light ceramsite is dark brown or bright black spherical solid with rough surface, and the bulk density is 421kg / m 3 , the particle density is 760kg / m 3 , can float in wa...

Embodiment 2

[0040] (1) the processing of three kinds of raw materials is with embodiment 1;

[0041] (2) Weigh and mix 20wt% of dried and pulverized sludge, 65wt% of clay and 15wt% of converter steel slag, stir evenly, then add water and stir until viscous, and make raw meal balls by conventional methods;

[0042] (3) Place the raw meal balls at room temperature and dry for 10 hours;

[0043] (4) Put the raw material balls into a 370°C box-type resistance furnace, preheat for 15 minutes; quickly transfer to a 1080°C tube-type resistance furnace and bake for 10 minutes; naturally cool to room temperature to obtain ultra-light ceramsite.

[0044] The appearance of the prepared ultra-light ceramsite is dark brown or dark brown spherical solid with rough surface. The bulk density is 454kg / m 3 , the particle density is 886kg / m 3 , can float in water, the water absorption rate is 5.5wt%, and the expansion rate is 27%.

Embodiment 3

[0048] (1) After the dewatered sludge is dried, the steel slag and clay are dried, the three raw materials are crushed, and sieved with a 100-mesh sieve, the particle diameter is ≤0.15mm;

[0049] (2) Weigh and mix 30wt% of dried and pulverized sludge, 45wt% of clay and 25wt% of converter steel slag, mix well, then add water and stir until viscous, and then make raw meal balls by conventional methods;

[0050] (3) Dry the raw meal balls at room temperature for 20 hours;

[0051] (4) Put the raw material balls into a 380°C box-type resistance furnace, preheat for 20 minutes; transfer to a 1050°C tube-type resistance furnace and bake for 15 minutes; naturally cool to room temperature to obtain ultra-light ceramsite.

[0052] The appearance of the prepared ultra-light ceramsite is dark brown or bright black spherical solid with rough surface, and the bulk density is 487kg / m 3 , the particle density is 925kg / m 3 , can float in water, the water absorption rate is 6.0wt%, and the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Bulk densityaaaaaaaaaa
Densityaaaaaaaaaa
Sintering temperatureaaaaaaaaaa
Login to View More

Abstract

The invention relates to a sludge steel slag ultra light ceramsite and a method for preparing the same. The ultra light ceramsite comprises the following raw material components by weight portion: 10 to 35 portions of dewatered sludge, 10 to 25 portions of revolving furnace steel slag, and 30 to 80 portions of clay. The method comprises the following steps that: the dewatered sludge, revolving furnace steel slag and clay which are dried and crushed are weighed up according to the proportion and mixed with water; and the mixture is stirred to prepare a raw meal ball, and the raw meal ball is dried at the normal temperature and then sintered in a resistance furnace. The method and the ceramsite have the advantages that: the process is simple; the prepared ceramsite is a spherical solid withdeep brown or black brown rough surface; the bulk density is 400 to 500 kg / m<3>, and the grain density is 760 to 925 kg / m<3>; the ceramsite can float in water; the water absorption rate is 4.0 to 6.0percent, and the expansion rate is 17 to 30 percent; moreover, the ceramsite also has the characteristics of light weight, high strength, small water absorption rate, big specific surface area, and the like.

Description

technical field [0001] The invention relates to an ultra-light ceramsite from sludge steel slag and a method for firing the ultra-light ceramsite by using dewatered sludge from an urban sewage plant and converter steel slag, belonging to the field of environmental science and technology. Background technique [0002] Dewatered sludge is composed of metabolized microbial corpses and adsorbents. When discharged, the water content is above 99%. After mechanical dehydration, it is muddy, and the water content still reaches about 80%. Because most of the existing urban drainage systems have industrial wastewater discharged into them, the harmful substances in the dewatered sludge increase, and the accumulation of harmful substances in the soil and virus pollution make the treatment of dewatered sludge increasingly difficult. Some developed countries and regions abroad are currently using incineration to treat dewatered sludge, which can avoid a series of problems such as accumula...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C04B33/13C04B33/00
Inventor 岳钦艳齐元峰高宝玉文毅章吴苏清于慧岳敏
Owner SHANDONG UNIV
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com