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

Red-mud-based sintered light aggregate and preparation method thereof

The technology of light aggregate and red mud is applied in the field of red mud-based sintered light aggregate and its preparation. Simple, cost-effective effect

Active Publication Date: 2016-02-03
江西林宇建设工程有限公司
View PDF3 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the research on the comprehensive utilization of red mud mainly focuses on the extraction of valuable metals, the use of environmental restoration materials, engineering plastic fillers, and the production of sintered bricks. Restoration will cause secondary pollution, pan-alkali phenomenon in the production of fired bricks, etc.

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
  • Red-mud-based sintered light aggregate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A red mud-based sintered light aggregate, which is composed of the following raw materials: weigh 40 parts of red mud, 30 parts of fly ash, 20 parts of coal gangue, and 10 parts of silica fume by weight on a dry basis; sodium lauryl sulfate 10 parts, 30 parts of sodium nitrate, 60 parts of pulverized coal of 500 orders of fineness, 20 parts of granulated binder, wherein, granulated binder is the mixed solution of water and water glass, and its mass ratio is 75:25, and wherein, water The glass modulus is 2.0~3.2.

[0018] The preparation method of the above-mentioned red mud-based sintered light aggregate comprises the following steps:

[0019] (1) Raw material treatment: Weigh red mud, fly ash, coal gangue and silica fume in parts by weight on a dry basis, and mix them evenly in a mixer;

[0020] (2) Preparation of composite performance modifier: Weigh sodium lauryl sulfate, sodium nitrate, coal powder with a fineness of 500 mesh, mix well, and then stand at 50°C for 2...

Embodiment 2

[0025] A red mud-based sintered light aggregate, which is composed of the following raw materials: weigh 60 parts of red mud, 20 parts of fly ash, 15 parts of coal gangue, and 5 parts of silica fume by weight on a dry basis; sodium lauryl sulfate 20 parts, 20 parts of potassium nitrate, 55 parts of pulverized coal of 500 orders of fineness, 10 parts of granulated binder, wherein, granulated binder is the mixed solution of water and water glass, and its mass ratio is 85:15, and wherein, water The glass modulus is 2.0~3.2.

[0026] The preparation method of the above-mentioned red mud-based sintered light aggregate comprises the following steps:

[0027] (1) Raw material treatment: Weigh red mud, fly ash, coal gangue and silica fume in parts by weight on a dry basis, and mix them evenly in a mixer;

[0028] (2) Preparation of composite performance regulator: weigh sodium lauryl sulfate, potassium nitrate, and coal powder with a fineness of 500 mesh, mix well, and then stand at ...

Embodiment 3

[0033] A red mud-based sintered light aggregate, which is composed of the following raw materials: weigh 80 parts of red mud, 10 parts of fly ash, 5 parts of coal gangue, and 5 parts of silica fume by weight on a dry basis; sodium lauryl sulfate 20 parts, 5 parts of sodium nitrate, 30 parts of pulverized coal of fineness 500 orders, 30 parts of granulated binder, wherein, granulated binder is the mixed solution of water and water glass, and its mass ratio is 90:10, and wherein, water The glass modulus is 2.0~3.2.

[0034] The preparation method of the above-mentioned red mud-based sintered light aggregate comprises the following steps:

[0035] (1) Raw material treatment: Weigh red mud, fly ash, coal gangue and silica fume in parts by weight on a dry basis, and mix them evenly in a mixer;

[0036] (2) Preparation of composite performance modifier: Weigh sodium dodecylsulfonate, sodium nitrate, coal powder with a fineness of 500 mesh, mix well, and then stand at 80°C for 2 day...

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
particle diameteraaaaaaaaaa
densityaaaaaaaaaa
cylinder compressive strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses red-mud-based sintered light aggregate and a preparation method thereof and belongs to the technical field of industrial solid waste comprehensive utilization and novel ecological building materials. The red-mud-based sintered light aggregate is prepared from, by weight, 40-80 parts of red mud, 10-30 parts of coal ash, 5-30 parts of coal gangue, 0-20 parts of silica fume, 10-20 parts of alkylating agent, 5-30 parts of nitration agent, 30-60 parts of carbonaceous pore forming material and 10-30 parts of pelletization adhesive. The red mud is on the basis of the weight of a dry base. The red mud, the coal ash, the coal gangue, ganister sand and other industrial solid waste are adopted in the main raw materials, and eco-environment friendliness is achieved. A compound performance modifier formed by the alkylating agent and the nitration agent can be matched with a proper baking process, the radioactivity of the red mud can be effectively restrained, and the solid caustic soda effect is achieved. The overall preparation process is simple, existing equipment can be utilized for production, cost is effectively reduced, and large-scale consumption of the red mud is achieved.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of industrial solid waste and new ecological building materials, and in particular relates to a red mud-based sintered light aggregate and a preparation method thereof. Background technique [0002] The red mud stockpile is large and the utilization rate is low. In 2005, the production of red mud in my country was 10 million tons, and in 2010, it was 30 million tons. It is estimated that the production will reach 35 million tons in 2015, and the cumulative stockpiles will reach more than 300 million tons. The rapid development of electrolytic aluminum, alumina and other related industries has led to a continuous increase in the accumulation of red mud, causing serious ecological problems such as groundwater, soil pollution, smog, and radioactivity exceeding the standard. Regrettably, the comprehensive utilization rate of red mud in 2010 was only 4% of the output in that year, and the util...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B18/04
CPCY02W30/91
Inventor 徐开东王继娜牛季收杨欢马先伟朱凯
Owner 江西林宇建设工程有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com